Doxazosin

Generic name: Pronounced as (dox ay' zoe sin)
Brand names
  • Cardura®
  • Cardura® XL
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Medical Content Reviewed By HelloPharmacist Staff

Last Revised - 11/15/2017

Doxazosin is used in men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia or BPH), which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency. It is also used alone or in combination with other medications to treat high blood pressure. Doxazosin is in a class of medications called alpha-blockers. It relieves the symptoms of BPH by relaxing the muscles of the bladder and prostate. It lowers blood pressure by relaxing the blood vessels so that blood can flow more easily through the body.

High blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys and other parts of the body. Damage to these organs may cause heart disease, a heart attack, heart failure, stroke, kidney failure, loss of vision, and other problems. In addition to taking medication, making lifestyle changes will also help to control your blood pressure. These changes include eating a diet that is low in fat and salt, maintaining a healthy weight, exercising at least 30 minutes most days, not smoking, and using alcohol in moderation.

Doxazosin comes as a tablet and an extended-release tablet to take by mouth. The doxazosin tablet is usually taken with or without food once a day in the morning or in the evening. Doxazosin extended-release tablet is usually taken once a day with breakfast. Take doxazosin around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take doxazosin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Swallow the extended-release tablets whole; do not split, chew, or crush them.

Your doctor will start you on a low dose of doxazosin and gradually increase your dose, not more than once every 1 to 2 weeks. If you stop taking doxazosin for a few days or longer, call your doctor. Your doctor will have to start you again on the lowest dose of doxazosin and gradually increase your dose.

Doxazosin controls high blood pressure and the symptoms of BPH but does not cure them. It may take a few weeks before you feel the full benefit of doxazosin. Continue to take doxazosin even if you feel well. Do not stop taking doxazosin without talking to your doctor.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

Before taking doxazosin,

  • tell your doctor and pharmacist if you are allergic to doxazosin, prazosin (Minipress), terazosin, any other medications, or any ingredients in doxazosin tablets or extended-release tablets. Ask your pharmacist for a list of the ingredients..

  • tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: antihistamines; clarithromycin (Biaxin, in Prevpac); ipratropium (Atrovent, in Combivent); itraconazole (Onmel, Sporanox); ketoconazole (Nizoral); medications for erectile dysfunction (ED) such as sildenafil (Revatio, Viagra), tadalafil (Adcirca, Cialis), or vardenafil (Levitra, Staxyn); medications for high blood pressure; medications for HIV/AIDS including atazanavir (Reyataz), indinavir (Crixivan), nelfinavir (Viracept), ritonavir (Norvir, in Kaletra), or saquinavir (Invirase); medications for irritable bowel disease, motion sickness, Parkinson's disease, ulcers, or urinary problems; nefazodone; telithromycin (Ketek); and voriconazole (Vfend). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

  • tell your doctor if you have angina (chest pain); low blood pressure; if you have ever had low blood pressure after taking a medication; or if you have or have ever had prostate cancer, or liver disease. If you are taking the extended-release tablet, tell you doctor if you have constipation, short bowel syndrome (a condition where more than half of the small intestine has been removed by surgery or damaged by disease), or narrowing or a blockage of the intestines.

  • tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking doxazosin, call your doctor.

  • talk to your doctor about the risks and benefits of taking doxazosin if you are 65 years of age or older. Older adults should not usually take doxazosin to treat high blood pressure, because it is not as safe as other medications that can be used to treat the same condition.

  • if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking doxazosin. If you need to have eye surgery at any time during or after your treatment, be sure to tell your doctor that you are taking or have taken doxazosin.

  • you should know that doxazosin may make you drowsy or dizzy. Do not drive a car, operate machinery, or perform dangerous tasks for 24 hours after the first time you take doxazosin or after your dose is increased.

  • you should know that doxazosin may cause dizziness, lightheadedness, and fainting when you get up too quickly from a lying position. This is more common when you first start taking doxazosin, when your dose is increased, or if your treatment has been stopped for more than a few days. To avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up. If you experience these symptoms, sit or lie down. If these symptoms do not improve, call your doctor.

Follow your doctor's directions for your meals, including advice for a reduced salt (sodium) diet.

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. Check with your doctor if you have missed two or more doses.

  • Doxazosin may cause side effects. Tell your doctor if any of these symptoms or those listed in the SPECIAL PRECAUTIONS section are severe or do not go away:

    • headache

    • tiredness

    • swelling of the hands, feet, ankles, or lower legs

    • shortness of breath

    • weight gain

    • muscle or joint pain or weakness

    • abnormal vision

    • runny nose

    • decreased sexual ability

  • Some side effects can be serious. If you experience any of these symptoms, call your doctor immediately or seek emergency medical treatment:

    • rapid, pounding, or irregular heartbeat

    • chest pain

    • shortness of breath

    • hives

    • painful erection of the penis that lasts for hours

  • Doxazosin may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.

Symptoms of overdose may include:

  • drowsiness

  • dizziness

  • lightheadedness

  • fainting

  • seizure

If you are taking doxazosin extended-release tablets, you may notice something that looks like a tablet in your stool. This is just the empty tablet shell, and this does not mean that you did not get your complete dose of medication.

Keep all appointments with your doctor. If you are taking doxazosin to control high blood pressure, your blood pressure should be checked regularly to determine your response to doxazosin.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

Drug Interaction
Montelukast Montelukast The metabolism of Doxazosin can be decreased when combined with Montelukast.
Leflunomide Leflunomide The metabolism of Doxazosin can be decreased when combined with Leflunomide.
Delavirdine Delavirdine The metabolism of Doxazosin can be decreased when combined with Delavirdine.
Nevirapine Nevirapine The metabolism of Doxazosin can be decreased when combined with Nevirapine.
Dolasetron Dolasetron The metabolism of Dolasetron can be decreased when combined with Doxazosin.
Aminophylline Aminophylline The metabolism of Aminophylline can be decreased when combined with Doxazosin.
Candesartan Candesartan Doxazosin may increase the hypotensive activities of Candesartan.
Cilostazol Cilostazol The metabolism of Cilostazol can be decreased when combined with Doxazosin.
Clopidogrel Clopidogrel The metabolism of Doxazosin can be decreased when combined with Clopidogrel.
Erythromycin and Sulfisoxazole Erythromycin and Sulfisoxazole The metabolism of Doxazosin can be decreased when combined with Erythromycin.
Fenofibrate Fenofibrate The metabolism of Doxazosin can be decreased when combined with Fenofibrate.
Guanfacine Guanfacine The therapeutic efficacy of Guanfacine can be decreased when used in combination with Doxazosin.
Methylergonovine Methylergonovine The metabolism of Doxazosin can be decreased when combined with Methylergometrine.
Naratriptan Naratriptan Naratriptan may decrease the antihypertensive activities of Doxazosin.
Olsalazine Olsalazine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Olsalazine.
Paregoric Paregoric The risk or severity of adverse effects can be increased when Morphine is combined with Doxazosin.
Penbutolol Penbutolol The metabolism of Doxazosin can be decreased when combined with Acebutolol.
Ranitidine Ranitidine The metabolism of Doxazosin can be decreased when combined with Ranitidine.
Reserpine Reserpine Reserpine may increase the hypotensive activities of Doxazosin.
Rizatriptan Rizatriptan Rizatriptan may decrease the antihypertensive activities of Doxazosin.
Sumatriptan Sumatriptan Sumatriptan may decrease the antihypertensive activities of Doxazosin.
Tacrolimus Tacrolimus The metabolism of Doxazosin can be decreased when combined with Tacrolimus.
Tizanidine Tizanidine The therapeutic efficacy of Tizanidine can be decreased when used in combination with Doxazosin.
Triamcinolone Triamcinolone The metabolism of Doxazosin can be increased when combined with Triamcinolone.
Zolmitriptan Zolmitriptan Zolmitriptan may decrease the antihypertensive activities of Doxazosin.
Doxycycline Injection Doxycycline Injection The metabolism of Doxazosin can be decreased when combined with Doxycycline.
Fluconazole Injection Fluconazole Injection The metabolism of Doxazosin can be decreased when combined with Fluconazole.
Hydromorphone Injection Hydromorphone Injection The metabolism of Doxazosin can be decreased when combined with Hydromorphone.
Meperidine Injection Meperidine Injection The metabolism of Doxazosin can be increased when combined with Meperidine.
Methylprednisolone Injection Methylprednisolone Injection The metabolism of Doxazosin can be increased when combined with Methylprednisolone.
Metoclopramide Injection Metoclopramide Injection The metabolism of Doxazosin can be decreased when combined with Metoclopramide.
Metronidazole Injection Metronidazole Injection The metabolism of Doxazosin can be decreased when combined with Metronidazole.
Morphine Injection Morphine Injection The risk or severity of adverse effects can be increased when Morphine is combined with Doxazosin.
Zidovudine Injection Zidovudine Injection The metabolism of Doxazosin can be decreased when combined with Zidovudine.
Altretamine Altretamine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Amphetamine.
Cyclosporine Cyclosporine The metabolism of Cyclosporine can be decreased when combined with Doxazosin.
Ondansetron Ondansetron The metabolism of Ondansetron can be decreased when combined with Doxazosin.
Torsemide Torsemide The metabolism of Doxazosin can be decreased when combined with Torasemide.
Olanzapine Olanzapine Olanzapine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Alosetron Alosetron The metabolism of Alosetron can be decreased when combined with Doxazosin.
Dofetilide Dofetilide The metabolism of Dofetilide can be decreased when combined with Doxazosin.
Entacapone Entacapone The metabolism of Doxazosin can be decreased when combined with Entacapone.
Eprosartan Eprosartan Doxazosin may increase the hypotensive activities of Eprosartan.
Hydroxychloroquine Hydroxychloroquine The metabolism of Doxazosin can be decreased when combined with Hydroxychloroquine.
Meloxicam Meloxicam The therapeutic efficacy of Doxazosin can be decreased when used in combination with Meloxicam.
Orlistat Orlistat The metabolism of Doxazosin can be increased when combined with Orlistat.
Oxcarbazepine Oxcarbazepine The metabolism of Doxazosin can be decreased when combined with Oxcarbazepine.
Pantoprazole Pantoprazole The metabolism of Doxazosin can be decreased when combined with Pantoprazole.
Telmisartan Telmisartan The metabolism of Doxazosin can be decreased when combined with Telmisartan.
Anakinra Anakinra The metabolism of Doxazosin can be increased when combined with Anakinra.
Linezolid Linezolid Linezolid may increase the hypotensive activities of Doxazosin.
Trimipramine Trimipramine Trimipramine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Etanercept Injection Etanercept Injection The metabolism of Doxazosin can be increased when combined with Etanercept.
Modafinil Modafinil The metabolism of Doxazosin can be decreased when combined with Modafinil.
Perindopril Perindopril Doxazosin may increase the hypotensive activities of Perindopril.
Tenofovir Tenofovir The metabolism of Tenofovir can be decreased when combined with Doxazosin.
Choline Magnesium Trisalicylate Choline Magnesium Trisalicylate The therapeutic efficacy of Doxazosin can be decreased when used in combination with Choline magnesium trisalicylate.
Sirolimus Sirolimus The metabolism of Sirolimus can be decreased when combined with Doxazosin.
Dutasteride Dutasteride Dutasteride may decrease the antihypertensive activities of Doxazosin.
Epinephrine Injection Epinephrine Injection The therapeutic efficacy of Epinephrine can be decreased when used in combination with Doxazosin.
Eplerenone Eplerenone Doxazosin may increase the hypotensive activities of Eplerenone.
Escitalopram Escitalopram The serum concentration of Escitalopram can be increased when it is combined with Doxazosin.
Olmesartan Olmesartan Olmesartan may increase the hypotensive activities of Doxazosin.
Zonisamide Zonisamide The risk or severity of hypotension can be increased when Doxazosin is combined with Zonisamide.
Adalimumab Injection Adalimumab Injection The metabolism of Doxazosin can be increased when combined with Adalimumab.
Aripiprazole Aripiprazole Aripiprazole may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Atomoxetine Atomoxetine The metabolism of Doxazosin can be decreased when combined with Atomoxetine.
Dexmethylphenidate Dexmethylphenidate Dexmethylphenidate may decrease the antihypertensive activities of Doxazosin.
Atazanavir Atazanavir The metabolism of Doxazosin can be decreased when combined with Atazanavir.
Almotriptan Almotriptan Almotriptan may decrease the antihypertensive activities of Doxazosin.
Eletriptan Eletriptan Eletriptan may decrease the antihypertensive activities of Doxazosin.
Mefloquine Mefloquine The metabolism of Doxazosin can be decreased when combined with Mefloquine.
Rosuvastatin Rosuvastatin The metabolism of Rosuvastatin can be decreased when combined with Doxazosin.
Vardenafil Vardenafil The risk or severity of hypotension can be increased when Vardenafil is combined with Doxazosin.
Alfuzosin Alfuzosin Alfuzosin may increase the hypotensive activities of Doxazosin.
Aprepitant Aprepitant The metabolism of Doxazosin can be decreased when combined with Aprepitant.
Memantine Memantine The metabolism of Doxazosin can be decreased when combined with Memantine.
Tegaserod Tegaserod The metabolism of Doxazosin can be decreased when combined with Tegaserod.
Tadalafil Tadalafil The risk or severity of hypotension can be increased when Tadalafil is combined with Doxazosin.
Frovatriptan Frovatriptan Frovatriptan may decrease the antihypertensive activities of Doxazosin.
Progesterone Progesterone The metabolism of Doxazosin can be increased when combined with Progesterone.
Apomorphine Injection Apomorphine Injection The risk or severity of adverse effects can be increased when Apomorphine is combined with Doxazosin.
Infliximab Injection Infliximab Injection The metabolism of Doxazosin can be increased when combined with Infliximab.
Oxandrolone Oxandrolone The metabolism of Doxazosin can be decreased when combined with Oxandrolone.
Protriptyline Protriptyline Protriptyline may decrease the antihypertensive activities of Doxazosin.
Rifaximin Rifaximin The metabolism of Doxazosin can be increased when combined with Rifaximin.
Duloxetine Duloxetine The risk or severity of orthostatic hypotension and syncope can be increased when Doxazosin is combined with Duloxetine.
Norethindrone Norethindrone The metabolism of Norethisterone can be decreased when combined with Doxazosin.
Trospium Trospium The metabolism of Doxazosin can be decreased when combined with Trospium.
Bosentan Bosentan The metabolism of Doxazosin can be increased when combined with Bosentan.
Cinacalcet Cinacalcet The metabolism of Doxazosin can be decreased when combined with Cinacalcet.
Erlotinib Erlotinib The metabolism of Doxazosin can be decreased when combined with Erlotinib.
Ganciclovir Ganciclovir The risk or severity of adverse effects can be increased when Doxazosin is combined with Ganciclovir.
Solifenacin Solifenacin Solifenacin may decrease the antihypertensive activities of Doxazosin.
Voriconazole Voriconazole The metabolism of Doxazosin can be decreased when combined with Voriconazole.
Dextroamphetamine Dextroamphetamine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Amphetamine.
Peginterferon Alfa-2b (PEG-Intron) Peginterferon Alfa-2b (PEG-Intron) The metabolism of Doxazosin can be increased when combined with Peginterferon alfa-2b.
Isocarboxazid Isocarboxazid Isocarboxazid may increase the hypotensive activities of Doxazosin.
Ramelteon Ramelteon The metabolism of Ramelteon can be decreased when combined with Doxazosin.
Darifenacin Darifenacin The metabolism of Darifenacin can be decreased when combined with Doxazosin.
Fentanyl Fentanyl Fentanyl may decrease the antihypertensive activities of Doxazosin.
Deferasirox Deferasirox The metabolism of Doxazosin can be increased when combined with Deferasirox.
Phenylephrine Phenylephrine The therapeutic efficacy of Phenylephrine can be decreased when used in combination with Doxazosin.
Tipranavir Tipranavir The metabolism of Tipranavir can be decreased when combined with Doxazosin.
Felbamate Felbamate The metabolism of Doxazosin can be decreased when combined with Felbamate.
Ranolazine Ranolazine The serum concentration of Doxazosin can be increased when it is combined with Ranolazine.
Abatacept Injection Abatacept Injection The metabolism of Doxazosin can be increased when combined with Abatacept.
Rasagiline Rasagiline Rasagiline may increase the hypotensive activities of Doxazosin.
Imatinib Imatinib The metabolism of Doxazosin can be decreased when combined with Imatinib.
Gefitinib Gefitinib The metabolism of Doxazosin can be decreased when combined with Gefitinib.
Albuterol Albuterol The therapeutic efficacy of Salbutamol can be decreased when used in combination with Doxazosin.
Paliperidone Paliperidone Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Paliperidone.
Bortezomib Bortezomib The metabolism of Doxazosin can be decreased when combined with Bortezomib.
Clofarabine Injection Clofarabine Injection The risk or severity of adverse effects can be increased when Clofarabine is combined with Doxazosin.
Posaconazole Posaconazole The metabolism of Doxazosin can be decreased when combined with Posaconazole.
Primaquine Primaquine The metabolism of Doxazosin can be decreased when combined with Primaquine.
Rituximab Injection Rituximab Injection Doxazosin may increase the hypotensive activities of Rituximab.
Aliskiren Aliskiren Doxazosin may increase the hypotensive activities of Aliskiren.
Darunavir Darunavir The metabolism of Darunavir can be decreased when combined with Doxazosin.
Lisdexamfetamine Lisdexamfetamine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Lisdexamfetamine.
Nabilone Nabilone The metabolism of Doxazosin can be decreased when combined with Nabilone.
Sorafenib Sorafenib The metabolism of Doxazosin can be decreased when combined with Sorafenib.
Sunitinib Sunitinib The metabolism of Doxazosin can be decreased when combined with Sunitinib.
Dronabinol Dronabinol The metabolism of Doxazosin can be decreased when combined with Dronabinol.
Lapatinib Lapatinib The metabolism of Lapatinib can be decreased when combined with Doxazosin.
Dasatinib Dasatinib The metabolism of Dasatinib can be decreased when combined with Doxazosin.
Mexiletine Mexiletine The metabolism of Doxazosin can be decreased when combined with Mexiletine.
Armodafinil Armodafinil The metabolism of Doxazosin can be decreased when combined with Armodafinil.
Ivermectin Ivermectin The metabolism of Doxazosin can be increased when combined with Ivermectin.
Temsirolimus Temsirolimus The metabolism of Temsirolimus can be decreased when combined with Doxazosin.
Nilotinib Nilotinib The metabolism of Doxazosin can be decreased when combined with Nilotinib.
Bexarotene Bexarotene The metabolism of Doxazosin can be increased when combined with Bexarotene.
Budesonide Budesonide The metabolism of Doxazosin can be increased when combined with Budesonide.
Chloramphenicol Injection Chloramphenicol Injection The metabolism of Doxazosin can be decreased when combined with Chloramphenicol.
Desmopressin Desmopressin Desmopressin may decrease the antihypertensive activities of Doxazosin.
Etravirine Etravirine The metabolism of Doxazosin can be increased when combined with Etravirine.
Arsenic Trioxide Injection Arsenic Trioxide Injection The risk or severity of adverse effects can be increased when Arsenic trioxide is combined with Doxazosin.
Mitoxantrone Injection Mitoxantrone Injection The metabolism of Doxazosin can be decreased when combined with Mitoxantrone.
Desvenlafaxine Desvenlafaxine The metabolism of Doxazosin can be decreased when combined with Desvenlafaxine.
Cevimeline Cevimeline The metabolism of Doxazosin can be decreased when combined with Cevimeline.
Nebivolol Nebivolol The therapeutic efficacy of Nebivolol can be decreased when used in combination with Doxazosin.
Tretinoin Tretinoin The risk or severity of adverse effects can be increased when Tretinoin is combined with Doxazosin.
Pilocarpine Pilocarpine The metabolism of Doxazosin can be decreased when combined with Pilocarpine.
Flecainide Flecainide The metabolism of Flecainide can be decreased when combined with Doxazosin.
Certolizumab Injection Certolizumab Injection The metabolism of Doxazosin can be increased when combined with Certolizumab pegol.
Ixabepilone Injection Ixabepilone Injection The metabolism of Ixabepilone can be decreased when combined with Doxazosin.
Irinotecan Injection Irinotecan Injection The metabolism of Irinotecan can be decreased when combined with Doxazosin.
Praziquantel Praziquantel The metabolism of Praziquantel can be decreased when combined with Doxazosin.
Mitotane Mitotane The metabolism of Doxazosin can be increased when combined with Mitotane.
Rufinamide Rufinamide The metabolism of Doxazosin can be increased when combined with Rufinamide.
Silodosin Silodosin Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Silodosin.
Midazolam Midazolam The metabolism of Doxazosin can be decreased when combined with Midazolam.
Milnacipran Milnacipran The metabolism of Doxazosin can be decreased when combined with Milnacipran.
Dexlansoprazole Dexlansoprazole The metabolism of Doxazosin can be decreased when combined with Dexlansoprazole.
Fesoterodine Fesoterodine The metabolism of Fesoterodine can be decreased when combined with Doxazosin.
Betaxolol Betaxolol Betaxolol may increase the orthostatic hypotensive activities of Doxazosin.
Iloperidone Iloperidone Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Iloperidone.
Prasugrel Prasugrel The metabolism of Prasugrel can be decreased when combined with Doxazosin.
Lacosamide Lacosamide The metabolism of Lacosamide can be decreased when combined with Doxazosin.
Everolimus Everolimus The metabolism of Everolimus can be decreased when combined with Doxazosin.
Tolvaptan (low blood sodium) Tolvaptan (low blood sodium) The metabolism of Tolvaptan can be decreased when combined with Doxazosin.
Dronedarone Dronedarone The metabolism of Dronedarone can be decreased when combined with Doxazosin.
Palonosetron Injection Palonosetron Injection The metabolism of Doxazosin can be decreased when combined with Palonosetron.
Romidepsin Injection Romidepsin Injection The metabolism of Romidepsin can be decreased when combined with Doxazosin.
Tapentadol Tapentadol The metabolism of Doxazosin can be decreased when combined with Tapentadol.
Topotecan Topotecan The metabolism of Doxazosin can be increased when combined with Topotecan.
Golimumab Injection Golimumab Injection The metabolism of Doxazosin can be increased when combined with Golimumab.
Pazopanib Pazopanib The metabolism of Doxazosin can be decreased when combined with Pazopanib.
Asenapine Asenapine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Asenapine.
Pitavastatin Pitavastatin The metabolism of Pitavastatin can be decreased when combined with Doxazosin.
Albendazole Albendazole The metabolism of Doxazosin can be decreased when combined with Albendazole.
Oxymorphone Oxymorphone The metabolism of Oxymorphone can be decreased when combined with Doxazosin.
Tocilizumab Injection Tocilizumab Injection The metabolism of Doxazosin can be increased when combined with Tocilizumab.
Cabazitaxel Injection Cabazitaxel Injection The metabolism of Cabazitaxel can be decreased when combined with Doxazosin.
Lurasidone Lurasidone Doxazosin may increase the hypotensive activities of Lurasidone.
Acetaminophen Injection Acetaminophen Injection The metabolism of Doxazosin can be increased when combined with Acetaminophen.
Vilazodone Vilazodone The metabolism of Doxazosin can be decreased when combined with Vilazodone.
Denileukin Diftitox Injection Denileukin Diftitox Injection The metabolism of Doxazosin can be decreased when combined with Aldesleukin.
Terbutaline Injection Terbutaline Injection The therapeutic efficacy of Terbutaline can be decreased when used in combination with Doxazosin.
Azilsartan Azilsartan The risk or severity of adverse effects can be increased when Azilsartan medoxomil is combined with Doxazosin.
Busulfan Injection Busulfan Injection The metabolism of Busulfan can be decreased when combined with Doxazosin.
Roflumilast Roflumilast The metabolism of Roflumilast can be decreased when combined with Doxazosin.
Linagliptin Linagliptin The metabolism of Doxazosin can be decreased when combined with Linagliptin.
Rilpivirine Rilpivirine The metabolism of Doxazosin can be decreased when combined with Rilpivirine.
Telaprevir Telaprevir The metabolism of Doxazosin can be decreased when combined with Glecaprevir.
Cyclophosphamide Injection Cyclophosphamide Injection The metabolism of Doxazosin can be decreased when combined with Cyclophosphamide.
Abiraterone Abiraterone The metabolism of Doxazosin can be decreased when combined with Abiraterone.
Ticagrelor Ticagrelor The metabolism of Doxazosin can be decreased when combined with Ticagrelor.
Brentuximab Vedotin Injection Brentuximab Vedotin Injection The metabolism of Doxazosin can be decreased when combined with Brentuximab vedotin.
Ruxolitinib Ruxolitinib The metabolism of Ruxolitinib can be decreased when combined with Doxazosin.
Vandetanib Vandetanib The metabolism of Vandetanib can be decreased when combined with Doxazosin.
Clobazam Clobazam The metabolism of Clobazam can be decreased when combined with Doxazosin.
Vemurafenib Vemurafenib The metabolism of Doxazosin can be decreased when combined with Vemurafenib.
Vismodegib Vismodegib The metabolism of Doxazosin can be decreased when combined with Vismodegib.
Ivacaftor Ivacaftor The metabolism of Ivacaftor can be decreased when combined with Doxazosin.
Axitinib Axitinib The metabolism of Axitinib can be decreased when combined with Doxazosin.
Crizotinib Crizotinib The metabolism of Doxazosin can be decreased when combined with Crizotinib.
Cabergoline Cabergoline The metabolism of Doxazosin can be decreased when combined with Cabergoline.
Naloxone Injection Naloxone Injection The metabolism of Doxazosin can be decreased when combined with Naloxone.
Ambrisentan Ambrisentan Doxazosin may increase the hypotensive activities of Ambrisentan.
Iloprost Iloprost Iloprost may increase the hypotensive activities of Doxazosin.
Enzalutamide Enzalutamide The metabolism of Doxazosin can be increased when combined with Enzalutamide.
Mirabegron Mirabegron The metabolism of Mirabegron can be decreased when combined with Doxazosin.
Regorafenib Regorafenib The metabolism of Doxazosin can be decreased when combined with Regorafenib.
Bosutinib Bosutinib The metabolism of Doxazosin can be decreased when combined with Bosutinib.
Corticotropin, Repository Injection Corticotropin, Repository Injection The metabolism of Doxazosin can be increased when combined with Corticotropin.
Cabozantinib (thyroid cancer) Cabozantinib (thyroid cancer) The metabolism of Cabozantinib can be decreased when combined with Doxazosin.
Alogliptin Alogliptin The metabolism of Alogliptin can be decreased when combined with Doxazosin.
Ponatinib Ponatinib The metabolism of Ponatinib can be decreased when combined with Doxazosin.
Pomalidomide Pomalidomide The metabolism of Pomalidomide can be decreased when combined with Doxazosin.
Ado-trastuzumab Emtansine Injection Ado-trastuzumab Emtansine Injection The metabolism of Doxazosin can be decreased when combined with Trastuzumab emtansine.
Apixaban Apixaban The metabolism of Apixaban can be decreased when combined with Doxazosin.
Canagliflozin Canagliflozin The risk or severity of adverse effects can be increased when Canagliflozin is combined with Doxazosin.
Methazolamide Methazolamide The risk or severity of adverse effects can be increased when Methazolamide is combined with Doxazosin.
Dabrafenib Dabrafenib The serum concentration of Doxazosin can be decreased when it is combined with Dabrafenib.
Ospemifene Ospemifene The metabolism of Ospemifene can be decreased when combined with Doxazosin.
Trametinib Trametinib The metabolism of Doxazosin can be increased when combined with Trametinib.
Levomilnacipran Levomilnacipran The metabolism of Levomilnacipran can be decreased when combined with Doxazosin.
Vortioxetine Vortioxetine The metabolism of Vortioxetine can be decreased when combined with Doxazosin.
Perampanel Perampanel The metabolism of Doxazosin can be increased when combined with Perampanel.
Ibrutinib Ibrutinib The metabolism of Ibrutinib can be decreased when combined with Doxazosin.
Lomitapide Lomitapide The metabolism of Doxazosin can be decreased when combined with Lomitapide.
Avanafil Avanafil The risk or severity of hypotension can be increased when Avanafil is combined with Doxazosin.
Ketorolac Injection Ketorolac Injection The therapeutic efficacy of Doxazosin can be decreased when used in combination with Ketorolac.
Obinutuzumab Injection Obinutuzumab Injection Doxazosin may increase the hypotensive activities of Obinutuzumab.
Simeprevir Simeprevir The metabolism of Doxazosin can be decreased when combined with Simeprevir.
Dapagliflozin Dapagliflozin The metabolism of Dapagliflozin can be decreased when combined with Doxazosin.
Apremilast Apremilast The metabolism of Doxazosin can be increased when combined with Apremilast.
Droxidopa Droxidopa The therapeutic efficacy of Droxidopa can be decreased when used in combination with Doxazosin.
Ceritinib Ceritinib The metabolism of Doxazosin can be decreased when combined with Ceritinib.
Siltuximab Injection Siltuximab Injection The metabolism of Doxazosin can be increased when combined with Siltuximab.
Eslicarbazepine Eslicarbazepine The metabolism of Doxazosin can be decreased when combined with Eslicarbazepine.
Idelalisib Idelalisib The metabolism of Idelalisib can be decreased when combined with Doxazosin.
Testosterone Injection Testosterone Injection The metabolism of Doxazosin can be increased when combined with Testosterone.
Oritavancin Injection Oritavancin Injection The metabolism of Doxazosin can be decreased when combined with Oritavancin.
Empagliflozin Empagliflozin The risk or severity of adverse effects can be increased when Empagliflozin is combined with Doxazosin.
Vorapaxar Vorapaxar The metabolism of Vorapaxar can be decreased when combined with Doxazosin.
Suvorexant Suvorexant The metabolism of Suvorexant can be decreased when combined with Doxazosin.
Olaparib Olaparib The metabolism of Doxazosin can be decreased when combined with Olaparib.
Methamphetamine Methamphetamine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Metamfetamine.
Tasimelteon Tasimelteon The metabolism of Tasimelteon can be decreased when combined with Doxazosin.
Riociguat Riociguat Doxazosin may increase the hypotensive activities of Riociguat.
Lanreotide Injection Lanreotide Injection The metabolism of Doxazosin can be decreased when combined with Lanreotide.
Nintedanib Nintedanib The metabolism of Nintedanib can be decreased when combined with Doxazosin.
Secukinumab Injection Secukinumab Injection The metabolism of Doxazosin can be increased when combined with Secukinumab.
Risperidone Injection Risperidone Injection Doxazosin may increase the hypotensive activities of Risperidone.
Palbociclib Palbociclib The metabolism of Doxazosin can be decreased when combined with Palbociclib.
Lenvatinib Lenvatinib The metabolism of Doxazosin can be increased when combined with Lenvatinib.
Naloxegol Naloxegol The metabolism of Doxazosin can be decreased when combined with Naloxegol.
Panobinostat Panobinostat The metabolism of Panobinostat can be decreased when combined with Doxazosin.
Dinutuximab Injection Dinutuximab Injection The risk or severity of adverse effects can be increased when Dinutuximab is combined with Doxazosin.
Haloperidol Injection Haloperidol Injection The serum concentration of Doxazosin can be increased when it is combined with Haloperidol.
Amiloride Amiloride The risk or severity of adverse effects can be increased when Amiloride is combined with Doxazosin.
Isavuconazonium Injection Isavuconazonium Injection The metabolism of Doxazosin can be increased when combined with Isavuconazonium.
Macitentan Macitentan Doxazosin may increase the hypotensive activities of Macitentan.
Sonidegib Sonidegib The metabolism of Sonidegib can be decreased when combined with Doxazosin.
Flibanserin Flibanserin Flibanserin may decrease the antihypertensive activities of Doxazosin.
Rolapitant Rolapitant The metabolism of Doxazosin can be decreased when combined with Rolapitant.
Prednisolone Prednisolone The metabolism of Doxazosin can be increased when combined with Prednisolone.
Brexpiprazole Brexpiprazole Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Brexpiprazole.
Ziprasidone Injection Ziprasidone Injection Ziprasidone may increase the antihypertensive activities of Doxazosin.
Cariprazine Cariprazine Cariprazine may decrease the antihypertensive activities of Doxazosin.
Cobimetinib Cobimetinib The metabolism of Cobimetinib can be decreased when combined with Doxazosin.
Trabectedin Injection Trabectedin Injection The metabolism of Trabectedin can be decreased when combined with Doxazosin.
Osimertinib Osimertinib The metabolism of Doxazosin can be decreased when combined with Osimertinib.
Alectinib Alectinib The metabolism of Alectinib can be decreased when combined with Doxazosin.
Ixazomib Ixazomib The metabolism of Ixazomib can be decreased when combined with Doxazosin.
Rifapentine Rifapentine The metabolism of Doxazosin can be increased when combined with Rifapentine.
Lesinurad Lesinurad The metabolism of Lesinurad can be increased when combined with Doxazosin.
Amphotericin B Liposomal Injection Amphotericin B Liposomal Injection The metabolism of Doxazosin can be decreased when combined with Amphotericin B.
Dexamethasone Injection Dexamethasone Injection The metabolism of Doxazosin can be increased when combined with Dexamethasone.
Brivaracetam Injection Brivaracetam Injection The metabolism of Brivaracetam can be decreased when combined with Doxazosin.
Venetoclax Venetoclax The metabolism of Doxazosin can be decreased when combined with Venetoclax.
Cobicistat Cobicistat The metabolism of Doxazosin can be decreased when combined with Cobicistat.
Midodrine Midodrine The therapeutic efficacy of Midodrine can be decreased when used in combination with Doxazosin.
Selexipag Selexipag Doxazosin may increase the hypotensive activities of Selexipag.
Diphenhydramine Injection Diphenhydramine Injection The metabolism of Doxazosin can be decreased when combined with Diphenhydramine.
Furosemide Injection Furosemide Injection Furosemide may increase the hypotensive activities of Doxazosin.
Rucaparib Rucaparib The metabolism of Rucaparib can be decreased when combined with Doxazosin.
Ribociclib Ribociclib The metabolism of Doxazosin can be decreased when combined with Ribociclib.
Brigatinib Brigatinib The metabolism of Doxazosin can be decreased when combined with Brigatinib.
Doxepin (Insomnia) Doxepin (Insomnia) Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxepin.
Deutetrabenazine Deutetrabenazine The metabolism of Deutetrabenazine can be decreased when combined with Doxazosin.
Valbenazine Valbenazine The metabolism of Valbenazine can be decreased when combined with Doxazosin.
Deflazacort Deflazacort The metabolism of Doxazosin can be increased when combined with Deflazacort.
Safinamide Safinamide Safinamide may increase the hypotensive activities of Doxazosin.
Sarilumab Injection Sarilumab Injection The metabolism of Doxazosin can be increased when combined with Sarilumab.
Midostaurin Midostaurin The metabolism of Doxazosin can be decreased when combined with Midostaurin.
Neratinib Neratinib The metabolism of Neratinib can be decreased when combined with Doxazosin.
Enasidenib Enasidenib The metabolism of Doxazosin can be decreased when combined with Enasidenib.
Aprepitant/Fosaprepitant Injection Aprepitant/Fosaprepitant Injection The metabolism of Doxazosin can be increased when combined with Fosaprepitant.
Copanlisib Injection Copanlisib Injection The metabolism of Copanlisib can be decreased when combined with Doxazosin.
Delafloxacin Delafloxacin The metabolism of Doxazosin can be increased when combined with Delafloxacin.
Abemaciclib Abemaciclib The metabolism of Abemaciclib can be decreased when combined with Doxazosin.
Acalabrutinib Acalabrutinib The metabolism of Doxazosin can be decreased when combined with Acalabrutinib.
Letermovir Letermovir The metabolism of Doxazosin can be decreased when combined with Letermovir.
Tetrabenazine Tetrabenazine The metabolism of Tetrabenazine can be decreased when combined with Doxazosin.
Buprenorphine Injection Buprenorphine Injection The metabolism of Doxazosin can be decreased when combined with Buprenorphine.
Apalutamide Apalutamide The serum concentration of Doxazosin can be increased when it is combined with Apalutamide.
Fostamatinib Fostamatinib The risk or severity of hypotension can be increased when Fostamatinib is combined with Doxazosin.
Avatrombopag Avatrombopag The metabolism of Doxazosin can be increased when combined with Avatrombopag.
Baricitinib Baricitinib The metabolism of Baricitinib can be decreased when combined with Doxazosin.
Lofexidine Lofexidine The therapeutic efficacy of Lofexidine can be decreased when used in combination with Doxazosin.
Eliglustat Eliglustat The metabolism of Doxazosin can be decreased when combined with Eliglustat.
Encorafenib Encorafenib The metabolism of Encorafenib can be decreased when combined with Doxazosin.
Ivosidenib Ivosidenib The metabolism of Doxazosin can be decreased when combined with Ivosidenib.
Elagolix Elagolix The metabolism of Elagolix can be decreased when combined with Doxazosin.
Tafenoquine Tafenoquine The metabolism of Tafenoquine can be decreased when combined with Doxazosin.
Cannabidiol Cannabidiol The metabolism of Cannabidiol can be decreased when combined with Doxazosin.
Dacomitinib Dacomitinib The metabolism of Doxazosin can be decreased when combined with Dacomitinib.
Duvelisib Duvelisib The metabolism of Duvelisib can be decreased when combined with Doxazosin.
Stiripentol Stiripentol The metabolism of Doxazosin can be decreased when combined with Stiripentol.
Gilteritinib Gilteritinib The metabolism of Gilteritinib can be decreased when combined with Doxazosin.
Lorlatinib Lorlatinib The metabolism of Lorlatinib can be decreased when combined with Doxazosin.
Paclitaxel (with albumin) Injection Paclitaxel (with albumin) Injection The metabolism of Doxazosin can be decreased when combined with Paclitaxel.
Rifamycin Rifamycin The metabolism of Doxazosin can be increased when combined with Rifamycin.
Prucalopride Prucalopride The metabolism of Prucalopride can be decreased when combined with Doxazosin.
Emapalumab-lzsg Injection Emapalumab-lzsg Injection The metabolism of Doxazosin can be increased when combined with Emapalumab.
Siponimod Siponimod The metabolism of Doxazosin can be decreased when combined with Siponimod.
Acyclovir Ophthalmic Acyclovir Ophthalmic The risk or severity of adverse effects can be increased when Doxazosin is combined with Acyclovir.
Erdafitinib Erdafitinib The metabolism of Erdafitinib can be decreased when combined with Doxazosin.
Esomeprazole Injection Esomeprazole Injection The metabolism of Doxazosin can be decreased when combined with Esomeprazole.
Alpelisib Alpelisib The serum concentration of Doxazosin can be decreased when it is combined with Alpelisib.
Solriamfetol Solriamfetol Solriamfetol may decrease the antihypertensive activities of Doxazosin.
Triclabendazole Triclabendazole The metabolism of Doxazosin can be decreased when combined with Triclabendazole.
Entrectinib Entrectinib The metabolism of Entrectinib can be decreased when combined with Doxazosin.
Pexidartinib Pexidartinib The metabolism of Pexidartinib can be decreased when combined with Doxazosin.
Istradefylline Istradefylline The metabolism of Istradefylline can be decreased when combined with Doxazosin.
Pitolisant Pitolisant The serum concentration of Doxazosin can be decreased when it is combined with Pitolisant.
Fedratinib Fedratinib The metabolism of Fedratinib can be decreased when combined with Doxazosin.
Lefamulin Lefamulin The metabolism of Lefamulin can be decreased when combined with Doxazosin.
Phenytoin Injection Phenytoin Injection The metabolism of Doxazosin can be increased when combined with Phenytoin.
Fosphenytoin Injection Fosphenytoin Injection The metabolism of Doxazosin can be increased when combined with Fosphenytoin.
Zanubrutinib Zanubrutinib The metabolism of Zanubrutinib can be decreased when combined with Doxazosin.
Voxelotor Voxelotor The metabolism of Voxelotor can be decreased when combined with Doxazosin.
Avapritinib Avapritinib The metabolism of Avapritinib can be decreased when combined with Doxazosin.
Tazemetostat Tazemetostat The metabolism of Tazemetostat can be decreased when combined with Doxazosin.
Cenobamate Cenobamate The serum concentration of Doxazosin can be decreased when it is combined with Cenobamate.
Selumetinib Selumetinib The metabolism of Selumetinib can be decreased when combined with Doxazosin.
Tucatinib Tucatinib The metabolism of Tucatinib can be decreased when combined with Doxazosin.
Selpercatinib Selpercatinib Selpercatinib may decrease the antihypertensive activities of Doxazosin.
Fenfluramine Fenfluramine The metabolism of Doxazosin can be decreased when combined with Fenfluramine.
Octreotide Octreotide The metabolism of Doxazosin can be decreased when combined with Octreotide.
Pralsetinib Pralsetinib The metabolism of Doxazosin can be increased when combined with Pralsetinib.
Satralizumab-mwge Injection Satralizumab-mwge Injection The serum concentration of Doxazosin can be decreased when it is combined with Satralizumab.
Naxitamab-gqgk Injection Naxitamab-gqgk Injection Naxitamab may decrease the antihypertensive activities of Doxazosin.
Progestin-Only (drospirenone) Oral Contraceptives Progestin-Only (drospirenone) Oral Contraceptives The metabolism of Drospirenone can be decreased when combined with Doxazosin.
Vitamin E (Alpha-Tocopherol) Vitamin E (Alpha-Tocopherol) The metabolism of Doxazosin can be increased when combined with Vitamin E.
Theophylline Theophylline The metabolism of Theophylline can be decreased when combined with Doxazosin.
Fenoprofen Fenoprofen The therapeutic efficacy of Doxazosin can be decreased when used in combination with Fenoprofen.
Indomethacin Indomethacin The metabolism of Doxazosin can be decreased when combined with Indomethacin.
Mefenamic Acid Mefenamic Acid The therapeutic efficacy of Doxazosin can be decreased when used in combination with Mefenamic acid.
Naproxen Naproxen The therapeutic efficacy of Doxazosin can be decreased when used in combination with Naproxen.
Tolmetin Tolmetin The therapeutic efficacy of Doxazosin can be decreased when used in combination with Tolmetin.
Sulindac Sulindac The therapeutic efficacy of Doxazosin can be decreased when used in combination with Sulindac.
Trazodone Trazodone Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Trazodone.
Hydroxyurea Hydroxyurea The metabolism of Doxazosin can be decreased when combined with Hydroxyurea.
Floxuridine Floxuridine The metabolism of Doxazosin can be decreased when combined with Floxuridine.
Phenobarbital Phenobarbital The metabolism of Phenobarbital can be decreased when combined with Doxazosin.
Methotrexate Injection Methotrexate Injection The metabolism of Methotrexate can be decreased when combined with Doxazosin.
Primidone Primidone The metabolism of Doxazosin can be increased when combined with Primidone.
Methsuximide Methsuximide The risk or severity of hypotension can be increased when Doxazosin is combined with Methsuximide.
Diethylpropion Diethylpropion The therapeutic efficacy of Doxazosin can be decreased when used in combination with Diethylpropion.
Chlorpromazine Chlorpromazine Chlorpromazine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Diazepam Diazepam The metabolism of Doxazosin can be decreased when combined with Diazepam.
Lorazepam Lorazepam The metabolism of Doxazosin can be decreased when combined with Lorazepam.
Phenoxybenzamine Phenoxybenzamine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Phenoxybenzamine.
Amantadine Amantadine The risk or severity of adverse effects can be increased when Doxazosin is combined with Amantadine.
Codeine Codeine The risk or severity of adverse effects can be increased when Doxazosin is combined with Codeine.
Bromocriptine Bromocriptine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Bromocriptine.
Metaproterenol Metaproterenol The therapeutic efficacy of Orciprenaline can be decreased when used in combination with Doxazosin.
Tranylcypromine Tranylcypromine The metabolism of Doxazosin can be decreased when combined with Tranylcypromine.
Phenelzine Phenelzine Phenelzine may increase the hypotensive activities of Doxazosin.
Procarbazine Procarbazine Procarbazine may increase the hypotensive activities of Doxazosin.
Ergoloid Mesylates Ergoloid Mesylates Ergoloid mesylate may decrease the antihypertensive activities of Doxazosin.
Tetracycline Tetracycline The metabolism of Doxazosin can be decreased when combined with Tetracycline.
Prochlorperazine Prochlorperazine The metabolism of Doxazosin can be decreased when combined with Prochlorperazine.
Thioridazine Thioridazine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Thioridazine.
Trifluoperazine Trifluoperazine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Trifluoperazine.
Dapsone Dapsone The metabolism of Doxazosin can be decreased when combined with Dapsone.
Sulfadiazine Sulfadiazine The metabolism of Doxazosin can be decreased when combined with Sulfadiazine.
Oxycodone Oxycodone The metabolism of Doxazosin can be decreased when combined with Oxycodone.
Methadone Methadone The metabolism of Doxazosin can be decreased when combined with Methadone.
Oxybutynin Oxybutynin The metabolism of Doxazosin can be decreased when combined with Oxybutynin.
Benztropine Benztropine The metabolism of Doxazosin can be decreased when combined with Benzatropine.
Maprotiline Maprotiline The metabolism of Maprotiline can be decreased when combined with Doxazosin.
Ibuprofen Ibuprofen The therapeutic efficacy of Ibuprofen can be decreased when used in combination with Doxazosin.
Orphenadrine Orphenadrine The metabolism of Doxazosin can be decreased when combined with Orphenadrine.
Perphenazine Perphenazine The metabolism of Doxazosin can be decreased when combined with Perphenazine.
Fluphenazine Fluphenazine The metabolism of Doxazosin can be decreased when combined with Fluphenazine.
Phentermine Phentermine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Phentermine.
Methylphenidate Methylphenidate Methylphenidate may decrease the antihypertensive activities of Doxazosin.
Amoxapine Amoxapine Amoxapine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Sulfasalazine Sulfasalazine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Sulfasalazine.
Hydrocortisone Hydrocortisone The metabolism of Doxazosin can be increased when combined with Hydrocortisone.
Doxorubicin Doxorubicin The metabolism of Doxazosin can be decreased when combined with Doxorubicin.
Cytarabine Cytarabine The risk or severity of adverse effects can be increased when Doxazosin is combined with Cytarabine.
Carbamazepine Carbamazepine The metabolism of Carbamazepine can be increased when combined with Doxazosin.
Methyldopa Methyldopa The therapeutic efficacy of Methyldopa can be decreased when used in combination with Doxazosin.
Clonidine Clonidine The risk or severity of hypotension can be increased when Clonidine is combined with Doxazosin.
Prazosin Prazosin The risk or severity of hypotension can be increased when Prazosin is combined with Doxazosin.
Hydralazine Hydralazine The metabolism of Doxazosin can be decreased when combined with Hydralazine.
Cimetidine Cimetidine The metabolism of Cimetidine can be decreased when combined with Doxazosin.
Warfarin Warfarin The metabolism of Warfarin can be decreased when combined with Doxazosin.
Loperamide Loperamide The metabolism of Doxazosin can be decreased when combined with Loperamide.
Promethazine Promethazine The metabolism of Doxazosin can be decreased when combined with Promethazine.
Meclofenamate Meclofenamate The therapeutic efficacy of Doxazosin can be decreased when used in combination with Meclofenamic acid.
Daunorubicin Daunorubicin The metabolism of Doxazosin can be decreased when combined with Daunorubicin.
Griseofulvin Griseofulvin The metabolism of Doxazosin can be increased when combined with Griseofulvin.
Chloroquine Chloroquine The metabolism of Chloroquine can be decreased when combined with Doxazosin.
Quinine Quinine The metabolism of Quinine can be decreased when combined with Doxazosin.
Ethosuximide Ethosuximide The risk or severity of hypotension can be increased when Doxazosin is combined with Ethosuximide.
Calcitriol Calcitriol The metabolism of Doxazosin can be increased when combined with Calcitriol.
Triamterene Triamterene The risk or severity of adverse effects can be increased when Triamterene is combined with Doxazosin.
Sulfinpyrazone Sulfinpyrazone The metabolism of Doxazosin can be increased when combined with Sulfinpyrazone.
Chlorothiazide Chlorothiazide The therapeutic efficacy of Chlorothiazide can be increased when used in combination with Doxazosin.
Chlorthalidone Chlorthalidone Chlorthalidone may increase the hypotensive activities of Doxazosin.
Metolazone Metolazone Metolazone may increase the hypotensive activities of Doxazosin.
Secobarbital Secobarbital Secobarbital may increase the hypotensive activities of Doxazosin.
Desipramine Desipramine The metabolism of Desipramine can be decreased when combined with Doxazosin.
Amitriptyline Amitriptyline Amitriptyline may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Imipramine Imipramine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Imipramine.
Probenecid Probenecid The metabolism of Doxazosin can be increased when combined with Probenecid.
Quinidine Quinidine Quinidine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Procainamide Procainamide The metabolism of Procainamide can be decreased when combined with Doxazosin.
Isoniazid Isoniazid The metabolism of Doxazosin can be decreased when combined with Isoniazid.
Rifampin Rifampin The metabolism of Doxazosin can be increased when combined with Rifampicin.
Valproic Acid Valproic Acid The metabolism of Doxazosin can be decreased when combined with Valproic acid.
Tamoxifen Tamoxifen The metabolism of Doxazosin can be decreased when combined with Tamoxifen.
Butabarbital Butabarbital Butabarbital may increase the hypotensive activities of Doxazosin.
Methimazole Methimazole The metabolism of Doxazosin can be decreased when combined with Methimazole.
Chlorpropamide Chlorpropamide The metabolism of Chlorpropamide can be decreased when combined with Doxazosin.
Tolbutamide Tolbutamide The metabolism of Tolbutamide can be decreased when combined with Doxazosin.
Tolazamide Tolazamide The metabolism of Tolazamide can be decreased when combined with Doxazosin.
Dextromethorphan Dextromethorphan The metabolism of Doxazosin can be decreased when combined with Dextromethorphan.
Niacin Niacin The metabolism of Doxazosin can be decreased when combined with Niacin.
Baclofen Baclofen The risk or severity of adverse effects can be increased when Baclofen is combined with Doxazosin.
Clemastine Clemastine The metabolism of Doxazosin can be decreased when combined with Clemastine.
Chlorpheniramine Chlorpheniramine The metabolism of Doxazosin can be decreased when combined with Chlorpheniramine.
Meclizine Meclizine The metabolism of Meclizine can be decreased when combined with Doxazosin.
Methyclothiazide Methyclothiazide The therapeutic efficacy of Doxazosin can be increased when used in combination with Methyclothiazide.
Hydrochlorothiazide Hydrochlorothiazide The therapeutic efficacy of Hydrochlorothiazide can be increased when used in combination with Doxazosin.
Chlorzoxazone Chlorzoxazone The metabolism of Doxazosin can be decreased when combined with Chlorzoxazone.
Carisoprodol Carisoprodol The metabolism of Doxazosin can be decreased when combined with Carisoprodol.
Danazol Danazol The metabolism of Doxazosin can be decreased when combined with Danazol.
Propranolol (Cardiovascular) Propranolol (Cardiovascular) Propranolol may increase the orthostatic hypotensive activities of Doxazosin.
Minoxidil Minoxidil Minoxidil may increase the hypotensive activities of Doxazosin.
Pseudoephedrine Pseudoephedrine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Pseudoephedrine.
Nortriptyline Nortriptyline Nortriptyline may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Spironolactone Spironolactone The risk or severity of adverse effects can be increased when Spironolactone is combined with Doxazosin.
Amphotericin B Injection Amphotericin B Injection The metabolism of Doxazosin can be decreased when combined with Amphotericin B.
Nadolol Nadolol Nadolol may increase the orthostatic hypotensive activities of Doxazosin.
Papaverine Papaverine The risk or severity of adverse effects can be increased when Papaverine is combined with Doxazosin.
Fluorouracil Injection Fluorouracil Injection The metabolism of Doxazosin can be decreased when combined with Fluorouracil.
Colchicine Colchicine The metabolism of Doxazosin can be increased when combined with Colchicine.
Cephalexin Cephalexin The metabolism of Doxazosin can be decreased when combined with Cephalexin.
Acetazolamide Acetazolamide The metabolism of Doxazosin can be decreased when combined with Acetazolamide.
Ketoconazole Ketoconazole The metabolism of Doxazosin can be decreased when combined with Ketoconazole.
Thiotepa Injection Thiotepa Injection The metabolism of Thiotepa can be decreased when combined with Doxazosin.
Vincristine Injection Vincristine Injection The metabolism of Vincristine can be decreased when combined with Doxazosin.
Captopril Captopril Doxazosin may increase the hypotensive activities of Captopril.
Dipyridamole Dipyridamole The risk or severity of hypotension can be increased when Dipyridamole is combined with Doxazosin.
Isoxsuprine Isoxsuprine The therapeutic efficacy of Isoxsuprine can be decreased when used in combination with Doxazosin.
Vinblastine Vinblastine The metabolism of Doxazosin can be decreased when combined with Vinblastine.
Ethacrynic Acid Ethacrynic Acid The risk or severity of adverse effects can be increased when Etacrynic acid is combined with Doxazosin.
Metoprolol Metoprolol The metabolism of Doxazosin can be decreased when combined with Metoprolol.
Hydroxyzine Hydroxyzine The metabolism of Doxazosin can be decreased when combined with Hydroxyzine.
Aspirin Aspirin The metabolism of Acetylsalicylic acid can be decreased when combined with Doxazosin.
Salsalate Salsalate The therapeutic efficacy of Doxazosin can be decreased when used in combination with Salsalate.
Trimethoprim Trimethoprim The metabolism of Doxazosin can be decreased when combined with Trimethoprim.
Diltiazem Diltiazem The risk or severity of hypotension can be increased when Doxazosin is combined with Diltiazem.
Nifedipine Nifedipine The serum concentration of Nifedipine can be decreased when it is combined with Doxazosin.
Timolol Timolol The metabolism of Doxazosin can be decreased when combined with Timolol.
Verapamil Verapamil Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Verapamil.
Atenolol Atenolol Atenolol may increase the orthostatic hypotensive activities of Doxazosin.
Pindolol Pindolol Pindolol may increase the orthostatic hypotensive activities of Doxazosin.
Cisplatin Injection Cisplatin Injection The metabolism of Doxazosin can be decreased when combined with Cisplatin.
Diflunisal Diflunisal The therapeutic efficacy of Doxazosin can be decreased when used in combination with Diflunisal.
Piroxicam Piroxicam The therapeutic efficacy of Doxazosin can be decreased when used in combination with Piroxicam.
Bumetanide Bumetanide The risk or severity of adverse effects can be increased when Bumetanide is combined with Doxazosin.
Etoposide Etoposide The metabolism of Doxazosin can be decreased when combined with Etoposide.
Glyburide Glyburide The metabolism of Doxazosin can be decreased when combined with Glyburide.
Glipizide Glipizide The metabolism of Glipizide can be decreased when combined with Doxazosin.
Indapamide Indapamide The therapeutic efficacy of Indapamide can be increased when used in combination with Doxazosin.
Dicloxacillin Dicloxacillin The metabolism of Doxazosin can be increased when combined with Dicloxacillin.
Nafcillin Injection Nafcillin Injection The metabolism of Doxazosin can be increased when combined with Nafcillin.
Pentoxifylline Pentoxifylline The risk or severity of hypotension can be increased when Pentoxifylline is combined with Doxazosin.
Pentamidine Injection Pentamidine Injection The metabolism of Pentamidine can be decreased when combined with Doxazosin.
Labetalol Labetalol Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Labetalol.
Gemfibrozil Gemfibrozil The metabolism of Doxazosin can be decreased when combined with Gemfibrozil.
Guanabenz Guanabenz The therapeutic efficacy of Guanabenz can be decreased when used in combination with Doxazosin.
Ketoprofen Ketoprofen The therapeutic efficacy of Doxazosin can be decreased when used in combination with Ketoprofen.
Pimozide Pimozide The metabolism of Pimozide can be decreased when combined with Doxazosin.
Enalapril Enalapril Enalapril may increase the hypotensive activities of Doxazosin.
Flurbiprofen Flurbiprofen The therapeutic efficacy of Doxazosin can be decreased when used in combination with Flurbiprofen.
Amiodarone Amiodarone The metabolism of Doxazosin can be decreased when combined with Amiodarone.
Buspirone Buspirone The metabolism of Doxazosin can be decreased when combined with Buspirone.
Lovastatin Lovastatin The metabolism of Doxazosin can be decreased when combined with Lovastatin.
Ciprofloxacin Ciprofloxacin The metabolism of Doxazosin can be decreased when combined with Ciprofloxacin.
Mesalamine Mesalamine The therapeutic efficacy of Doxazosin can be decreased when used in combination with Mesalazine.
Diclofenac Diclofenac The therapeutic efficacy of Doxazosin can be decreased when used in combination with Diclofenac.
Fluoxetine Fluoxetine The serum concentration of Doxazosin can be increased when it is combined with Fluoxetine.
Nimodipine Nimodipine The risk or severity of hypotension can be increased when Doxazosin is combined with Nimodipine.
Clozapine Clozapine Clozapine may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Doxazosin.
Idarubicin Idarubicin The metabolism of Idarubicin can be decreased when combined with Doxazosin.
Clarithromycin Clarithromycin The metabolism of Doxazosin can be decreased when combined with Clarithromycin.
Benazepril Benazepril Benazepril may increase the hypotensive activities of Doxazosin.
Etodolac Etodolac The therapeutic efficacy of Doxazosin can be decreased when used in combination with Etodolac.
Felodipine Felodipine The metabolism of Felodipine can be decreased when combined with Doxazosin.
Fosinopril Fosinopril Fosinopril may increase the hypotensive activities of Doxazosin.
Nabumetone Nabumetone The therapeutic efficacy of Doxazosin can be decreased when used in combination with Nabumetone.
Quinapril Quinapril Doxazosin may increase the hypotensive activities of Quinapril.
Ramipril Ramipril Ramipril may increase the hypotensive activities of Doxazosin.
Simvastatin Simvastatin The metabolism of Doxazosin can be decreased when combined with Simvastatin.
Amlodipine Amlodipine The risk or severity of hypotension can be increased when Doxazosin is combined with Amlodipine.
Teniposide Injection Teniposide Injection The metabolism of Doxazosin can be decreased when combined with Teniposide.
Itraconazole Itraconazole The metabolism of Doxazosin can be decreased when combined with Itraconazole.
Lisinopril Lisinopril Doxazosin may increase the hypotensive activities of Lisinopril.
Oxaprozin Oxaprozin The therapeutic efficacy of Doxazosin can be decreased when used in combination with Oxaprozin.
Atovaquone Atovaquone The metabolism of Doxazosin can be decreased when combined with Atovaquone.
Rifabutin Rifabutin The metabolism of Doxazosin can be increased when combined with Rifabutin.
Sotalol Sotalol The metabolism of Sotalol can be decreased when combined with Doxazosin.
Bisoprolol Bisoprolol Bisoprolol may increase the orthostatic hypotensive activities of Doxazosin.
Zolpidem Zolpidem The metabolism of Doxazosin can be decreased when combined with Zolpidem.
Terazosin Terazosin Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Terazosin.
Isradipine Isradipine The risk or severity of hypotension can be increased when Doxazosin is combined with Isradipine.
Omeprazole Omeprazole The metabolism of Doxazosin can be increased when combined with Omeprazole.
Cisapride Cisapride The metabolism of Cisapride can be decreased when combined with Doxazosin.
Fluvastatin Fluvastatin The metabolism of Doxazosin can be decreased when combined with Fluvastatin.
Venlafaxine Venlafaxine The metabolism of Venlafaxine can be decreased when combined with Doxazosin.
Famciclovir Famciclovir The metabolism of Doxazosin can be decreased when combined with Famciclovir.
Fluvoxamine Fluvoxamine The metabolism of Doxazosin can be decreased when combined with Fluvoxamine.
Nefazodone Nefazodone The metabolism of Doxazosin can be decreased when combined with Nefazodone.
Lamotrigine Lamotrigine The risk or severity of hypotension can be increased when Doxazosin is combined with Lamotrigine.
Losartan Losartan The metabolism of Doxazosin can be decreased when combined with Losartan.
Tramadol Tramadol The metabolism of Doxazosin can be decreased when combined with Tramadol.
Vinorelbine Injection Vinorelbine Injection The metabolism of Doxazosin can be decreased when combined with Vinorelbine.
Moexipril Moexipril Doxazosin may increase the hypotensive activities of Moexipril.
Lansoprazole Lansoprazole The metabolism of Doxazosin can be decreased when combined with Lansoprazole.
Ifosfamide Injection Ifosfamide Injection The metabolism of Doxazosin can be decreased when combined with Ifosfamide.
Nicardipine Nicardipine Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Nicardipine.
Bupropion Bupropion The metabolism of Doxazosin can be decreased when combined with Bupropion.
Ticlopidine Ticlopidine The metabolism of Doxazosin can be decreased when combined with Ticlopidine.
Saquinavir Saquinavir The metabolism of Saquinavir can be decreased when combined with Doxazosin.
Metformin Metformin The risk or severity of adverse effects can be increased when Doxazosin is combined with Metformin.
Nisoldipine Nisoldipine The risk or severity of hypotension can be increased when Nisoldipine is combined with Doxazosin.
Lamivudine Lamivudine The risk or severity of adverse effects can be increased when Doxazosin is combined with Lamivudine.
Amifostine Injection Amifostine Injection Doxazosin may increase the hypotensive activities of Amifostine.
Glimepiride Glimepiride The metabolism of Doxazosin can be decreased when combined with Glimepiride.
Ritonavir Ritonavir The metabolism of Doxazosin can be decreased when combined with Ritonavir.
Docetaxel Injection Docetaxel Injection The metabolism of Doxazosin can be decreased when combined with Docetaxel.
Clomipramine Clomipramine The metabolism of Doxazosin can be decreased when combined with Clomipramine.
Zafirlukast Zafirlukast The metabolism of Doxazosin can be decreased when combined with Zafirlukast.
Mirtazapine Mirtazapine The metabolism of Doxazosin can be decreased when combined with Mirtazapine.
Trandolapril Trandolapril Trandolapril may increase the hypotensive activities of Doxazosin.
Topiramate Topiramate The metabolism of Doxazosin can be increased when combined with Topiramate.
Zileuton Zileuton The metabolism of Zileuton can be decreased when combined with Doxazosin.
Valsartan Valsartan The metabolism of Doxazosin can be decreased when combined with Valsartan.
Pramipexole Pramipexole The risk or severity of adverse effects can be increased when Doxazosin is combined with Pramipexole.
Donepezil Donepezil The metabolism of Donepezil can be decreased when combined with Doxazosin.
Nelfinavir Nelfinavir The metabolism of Doxazosin can be decreased when combined with Nelfinavir.
Azithromycin Azithromycin The metabolism of Doxazosin can be decreased when combined with Azithromycin.
Carvedilol Carvedilol Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Carvedilol.
Nilutamide Nilutamide The metabolism of Doxazosin can be decreased when combined with Nilutamide.
Selegiline Selegiline Selegiline may increase the hypotensive activities of Doxazosin.
Bicalutamide Bicalutamide The metabolism of Doxazosin can be decreased when combined with Bicalutamide.
Sertraline Sertraline The metabolism of Doxazosin can be decreased when combined with Sertraline.
Propafenone Propafenone The metabolism of Doxazosin can be decreased when combined with Propafenone.
Letrozole Letrozole The metabolism of Doxazosin can be decreased when combined with Letrozole.
Raloxifene Raloxifene The metabolism of Doxazosin can be decreased when combined with Raloxifene.
Irbesartan Irbesartan The metabolism of Doxazosin can be decreased when combined with Irbesartan.
Tamsulosin Tamsulosin Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Tamsulosin.
Ropinirole Ropinirole The risk or severity of adverse effects can be increased when Ropinirole is combined with Doxazosin.
Finasteride Finasteride Finasteride may decrease the antihypertensive activities of Doxazosin.
Quetiapine Quetiapine Doxazosin may increase the hypotensive activities of Quetiapine.
Paroxetine Paroxetine The metabolism of Doxazosin can be decreased when combined with Paroxetine.
Tolcapone Tolcapone The metabolism of Doxazosin can be decreased when combined with Tolcapone.
Citalopram Citalopram The metabolism of Doxazosin can be decreased when combined with Citalopram.
Capecitabine Capecitabine The metabolism of Doxazosin can be decreased when combined with Capecitabine.
Efavirenz Efavirenz The metabolism of Doxazosin can be decreased when combined with Efavirenz.
Sildenafil Sildenafil The risk or severity of hypotension can be increased when Sildenafil is combined with Doxazosin.
Celecoxib Celecoxib The metabolism of Doxazosin can be decreased when combined with Celecoxib.
Rosiglitazone Rosiglitazone The metabolism of Doxazosin can be decreased when combined with Rosiglitazone.
Tolterodine Tolterodine The metabolism of Tolterodine can be decreased when combined with Doxazosin.
Thalidomide Thalidomide The metabolism of Doxazosin can be decreased when combined with Thalidomide.
Balsalazide Balsalazide The therapeutic efficacy of Doxazosin can be decreased when used in combination with Balsalazide.
Nateglinide Nateglinide The metabolism of Nateglinide can be decreased when combined with Doxazosin.
Galantamine Galantamine The metabolism of Galantamine can be decreased when combined with Doxazosin.
Rabeprazole Rabeprazole The metabolism of Doxazosin can be decreased when combined with Rabeprazole.
Terbinafine Terbinafine The metabolism of Doxazosin can be decreased when combined with Terbinafine.

Content provided by: AHFS® Patient Medication Information™. © Copyright, 2021. The American Society of Health-System Pharmacists