Drug & supplement interaction

Garlic + Alectinib Hydrochloride

Alectinib Hydrochloride brand name: Alecensa.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 13, 2026

The bottom line No known interaction

We found no known interaction between Garlic and Alectinib Hydrochloride in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Alectinib Hydrochloride states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Garlic and Alectinib Hydrochloride

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Alectinib Hydrochloride and Garlic in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Garlic safety at a glance

Garlic overall Use caution Generally safe as food, but supplements may cause stomach upset and increase bleeding risk.

Pregnancy Likely Safe When used orally in amounts commonly found in foods. Read the full pregnancy detail

Breastfeeding Likely Safe When used orally in amounts commonly found in foods. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Alectinib Hydrochloride and Garlic? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Alectinib Hydrochloride

Interactions in our licensed database are recorded against drug classes, not just single drug names. Alectinib Hydrochloride is filed under 3 classifications — photosensitizing drugs, hepatotoxic drugs, oral drugs. Garlic has documented interactions with 12 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate), antidiabetes drugs (moderate) and antihypertensive drugs (moderate) — and none of Alectinib Hydrochloride’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Garlic Does Interact With Other Medications

Garlic has 989 moderate known drug interactions in our database — Alectinib Hydrochloride isn’t one of them. If you take anything else, check it against the full list below.

Moderate 989 No known interaction 1,841 (incl. Alectinib Hydrochloride)

Taking anything else?

Check Another of Your Medications Against Garlic

Covers the 2,830 medications we’ve checked against Garlic. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Garlic and Alectinib Hydrochloride May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. 5 of them are worth acting on rather than waiting out — marked below.

Blood clots Worth acting on Additional detail
Garlic
“Oral use of dietary garlic or supplements containing garlic has caused platelet dysfunction, increased fibrinolytic activity, prolonged bleeding time, retrobulbar hemorrhage (bleeding behind the eye) postoperative bleeding, and spinal epidural hematoma. Also, a case of kidney hematoma following extracorporeal shock-wave lithotripsy (SWL) has been reported in a patient with nephrolithiasis who took aged garlic.”

Garlic · Natural Medicines adverse-effect record, reported in kidney stones (nephrolithiasis).
6 sources cited

586. Rose KD, Croissant PD, Parliament CF, Levin MB. Spontaneous spinal epidural hematoma with associated platelet dysfunction from excessive garlic ingestion: a case report. Neurosurg 1990;26:880-2. PubMed

587. Burnham BE. Garlic as a possible risk for postoperative bleeding. Plast Reconstr Surg 1995;95:213.

4801. Kiesewetter H, Jung F, Jung EM, et al. Effects of garlic coated tablets in peripheral arterial occlusive disease. Clin Investig 1993;71:383-6. PubMed

4802. Kiesewetter H, Jung F, Jung EM, et al. Effect of garlic on platelet aggregation in patients with increased risk of juvenile ischaemic attack. Eur J Clin Pharmacol 1993;45:333-6. PubMed

11325. Carden SM, Good WV, Carden PA, Good RM. Garlic and the strabismus surgeon. Clin Experiment Ophthalmol 2002;30:303-4. PubMed

51397. Gadkari JV, Joshi VD. Effect of ingestion of raw garlic on serum cholesterol level, clotting time and fibrinolytic activity in normal subjects. J Postgrad.Med 1991;37:128-131.
Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›
Shortness of breath / A higher chance of infection Worth acting on reported in 3.2% of FDA reports for Alectinib Hydrochloride Additional detail
Garlic
“Garlic exposure, most notably in occupational settings, may cause asthma and other symptoms such as sneezing, nasal obstruction, rhinorrhea, and sinusitis. A case of minor hemoptysis has been reported for one patient with cystic fibrosis following intake of garlic capsules orally once daily for 8 weeks. A 77-year-old female developed pneumonia related to the intake of one whole black garlic clove daily.”

Garlic · Natural Medicines adverse-effect record, reported in asthma.
4 sources cited

40661. van der Walt, A., Lopata, A. L., Nieuwenhuizen, N. E., and Jeebhay, M. F. Work-related allergy and asthma in spice mill workers - The impact of processing dried spices on IgE reactivity patterns. Int Arch.Allergy Immunol. 2010;152(3):271-278. PubMed

51218. Seuri, M., Taivanen, A., Ruoppi, P., and Tukiainen, H. Three cases of occupational asthma and rhinitis caused by garlic. Clin Exp.Allergy 1993;23(12):1011-1014. PubMed

51438. Smyth, A. R., Cifelli, P. M., Ortori, C. A., Righetti, K., Lewis, S., Erskine, P., Holland, E. D., Givskov, M., Williams, P., Camara, M., Barrett, D. A., and Knox, A. Garlic as an inhibitor of Pseudomonas aeruginosa quorum sensing in cystic fibrosis--a p

96011. Suzuki Y, Saito J, Misa K, Fukuhara N, Fukuhara A, Munakata M. A case of black garlic-induced pneumonia as an adverse reaction. Allergol Int. 2016;65(3):353-5. PubMed
Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›
Hives Worth acting on Additional detail
Garlic
“Orally, garlic may cause pruritus, flushing, and acne. Oral intake of a specific garlic product containing allicin (Allimax) has been associated with a case of pruritic rash. Enteric-coated garlic tablets standardized to 1.5% allicin have also been associated with a case of pruritus. Garlic has also been associated with a case of superficial pemphigus in a 49-year-old male with type 2 diabetes.”

Garlic · Natural Medicines adverse-effect record, reported in acne.
6 sources cited

51316. Tanamai, J., Veeramanomai, S., and Indrakosas, N. The efficacy of cholesterol-lowering action and side effects of garlic enteric coated tablets in man. J Med Assoc.Thai. 2004;87(10):1156-1161.

51474. Lissiman, E., Bhasale, A. L., and Cohen, M. Garlic for the common cold. Cochrane.Database.Syst.Rev. 2012;3:CD006206. PubMed

107239. Jafari F, Tabarrai M, Abbassian A, Jafari F, Ayati MH. Effect of Garlic (Allium sativum) Supplementation on Premenstrual Disorders: A Randomized, Double-Blind, Placebo-Controlled Trial. Evid Based Complement Alternat Med 2021;2021:9965064. PubMed

51564. Ruocco, V., Brenner, S., and Lombardi, M. L. A case of diet-related pemphigus. Dermatology 1996;192(4):373-374. PubMed

51467. Kianoush, S., Balali-Mood, M., Mousavi, S. R., Moradi, V., Sadeghi, M., Dadpour, B., Rajabi, O., and Shakeri, M. T. Comparison of therapeutic effects of garlic and d-Penicillamine in patients with chronic occupational lead poisoning. Basic Clin.Pharmacol

4833. Lee TY, Lam TH. Contact dermatitis due to topical treatment with garlic in Hong Kong. Contact Dermatitis 1991;24:193-6. PubMed
“Orally, dehydrated garlic preparations or raw garlic may cause malodorous breath, body odor, abdominal pain or fullness, anorexia, diarrhea, constipation, flatulence, belching, heartburn, nausea, unpleasant taste, reflux, and bowel obstruction.

Large quantities of garlic may damage the gastrointestinal tract.”

Garlic · Natural Medicines adverse-effect record, reported in anorexia.
6 sources cited

51438. Smyth, A. R., Cifelli, P. M., Ortori, C. A., Righetti, K., Lewis, S., Erskine, P., Holland, E. D., Givskov, M., Williams, P., Camara, M., Barrett, D. A., and Knox, A. Garlic as an inhibitor of Pseudomonas aeruginosa quorum sensing in cystic fibrosis--a p

51444. Hansanugrum, A. and Barringer, S. A. Effect of milk on the deodorization of malodorous breath after garlic ingestion. J.Food Sci. 8-1-2010;75(6):C549-C558. PubMed

732. Berthold HK, Sudhop T, von Bergmann K. Effect of a garlic oil preparation on serum lipoproteins and cholesterol metabolism. JAMA 1998;279:1900-2.

1873. Steiner M, Khan AH, Holbert D, Lin RI. A double-blind crossover study in moderately hypercholesterolemic men that compared the effect of aged garlic extract and placebo administration on blood lipids. Am J Clin Nutr 1996;64:866-70. PubMed

4784. Mader FH. Treatment of hyperlipidaemia with garlic-powder tablets. Evidence from the German Association of General Practitioners' multicentric placebo-controlled double-blind study. Arzneimittelforschung 1990;40:1111-6.

4793. Simons LA, Balasubramaniam S, von Konigsmark M, et al. On the effect of garlic on plasma lipids and lipoproteins in mild hypercholesterolaemia. Atherosclerosis 1995;113:219-25. PubMed
Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›
Bleeding or bruising Worth acting on Additional detail

Garlic

“Orally, garlic is generally well tolerated. Topically, garlic seems to be well tolerated. Intravenously, there is insufficient reliable information available about adverse effects.

Most Common Adverse Effects:

Orally: Abdominal pain, body odor, flatulence, malodorous breath, and nausea.”

Garlic · Natural Medicines adverse-effect record, reported in burns.

Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›
Acne / Mouth irritation or sores Additional detail

Garlic

Recorded for Garlic in the same Natural Medicines adverse-effect record shown under Hives above.

Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›
Back pain Additional detail
Garlic
“Orally, garlic has been associated with individual cases of gout and low back pain, but it is not clear if these adverse events can be attributed to garlic.”

Garlic · Natural Medicines adverse-effect record, reported in back pain.
2 sources cited

51474. Lissiman, E., Bhasale, A. L., and Cohen, M. Garlic for the common cold. Cochrane.Database.Syst.Rev. 2012;3:CD006206. PubMed

51467. Kianoush, S., Balali-Mood, M., Mousavi, S. R., Moradi, V., Sadeghi, M., Dadpour, B., Rajabi, O., and Shakeri, M. T. Comparison of therapeutic effects of garlic and d-Penicillamine in patients with chronic occupational lead poisoning. Basic Clin.Pharmacol
Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›
Constipation reported in 6.1% of FDA reports for Alectinib Hydrochloride Additional detail

Garlic

Recorded for Garlic in the same Natural Medicines adverse-effect record shown under Hives above.

Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›
Cough Additional detail

Garlic

Recorded for Garlic in the same Natural Medicines adverse-effect record shown under Shortness of breath / A higher chance of infection above.

Alectinib Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Alectinib Hydrochloride. Read the label on DailyMed ›

Showing the 10 most notable of 17 shared effects — ranked by how unusual each one is, not just whether both lists mention it.

Reported for Garlic but not commonly for Alectinib Hydrochloride: increased appetite, an allergic reaction, a bowel blockage and flushing.

Effects for Alectinib Hydrochloride come from the ADVERSE REACTIONS section of its FDA label; effects for Garlic come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 7,249 voluntary FDA FAERS reports for Alectinib Hydrochloride that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Garlic in Pregnancy & Breastfeeding

Pregnancy Likely Safe

When used orally in amounts commonly found in foods.

Pregnancy Possibly Unsafe

When used orally in medicinal amounts. Garlic is reported to have abortifacient activity. One study also suggests that garlic constituents are distributed to the amniotic fluid after a single dose of garlic. However, there are no published reports of garlic adversely affecting pregnancy. In clinical research, garlic 800 mg daily was used during the third trimester of pregnancy with no reported adverse outcomes. There is insufficient reliable information available about the safety of topical garlic during pregnancy.

Lactation Likely Safe

When used orally in amounts commonly found in foods.

Lactation Possibly Unsafe

When used orally in amounts greater than those found in foods. Several small studies suggest that garlic constituents are secreted in breast milk, and that nursing infants of mothers consuming garlic are prone to extended nursing. There is insufficient reliable information available about the safety of topical garlic during lactation.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Alectinib Hydrochloride Products Have a Food Rule — Garlic Should Not Break It

At least one FDA label for a product containing Alectinib Hydrochloride says to take it with food. If you take Garlic on an empty stomach out of habit, keep them separate — and take Alectinib Hydrochloride with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Alectinib Hydrochloride products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Administer ALECENSA with food.

From the Dosage and Administration section of the FDA label we read for Alectinib Hydrochloride — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

From our Q&A

Questions About Garlic or Alectinib Hydrochloride

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Garlic or Alectinib Hydrochloride, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Alectinib Hydrochloride

This page covers Garlic only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Alectinib Hydrochloride page lists 74 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Siberian Cocklebur (major), Wine (major) and Alfalfa (moderate).

By severity: 4 major · 60 moderate · 10 minor.

From our pharmacist’s overview on the Alectinib Hydrochloride page

“Alectinib (Alecensa) treats ALK-positive lung cancer, and because your liver already has to tolerate this drug, check this page before adding any supplement, not after. Of the 74 ingredients on file, 38 can add stress to the liver, and three of the four major-rated entries (beer, wine, and Siberian cocklebur) are the clearest examples…”

Reviewed by 2 · Jul 18, 2026

Open the Alectinib Hydrochloride interaction page

One more smart check

Taking Garlic as Part of a Dietary Supplement Product? Check It for Interactions

We hold 4,118 real supplement products containing Garlic, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Garlic. Even though Garlic itself has no known interaction with Alectinib Hydrochloride, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Garlic and Alectinib Hydrochloride Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Garlic

Top 5%

#58 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Alectinib Hydrochloride

Steady interest

#1,821 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?

Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Garlic reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Garlic and Alectinib Hydrochloride records this page draws on were last updated July 11, 2026.
What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Garlic

What is Garlic?

High blood pressure
High cholesterol
Heart health
Immune support and common cold
Antimicrobial uses

Garlic is a common food and supplement that may modestly help with blood pressure and cholesterol, though the evidence is mixed and effects are usually small. It is generally safe in food amounts, but concentrated supplements can cause stomach upset, breath and body odor, and a higher risk of bleeding. Talk with your pharmacist or doctor before taking garlic supplements, especially if you take other medicines.

Allium sativum · Amaryllidaceae · Bulb (cloves) · Fresh cloves, powder, capsules, tablets, softgels, aged garlic extract, garlic oil

An interaction check asks whether these two react with each other — it does not ask whether Garlic is a good idea for someone in your situation. Here is what our Garlic record says about it on its own.

Garlic: dosing

There is no single official dose for garlic supplements. Different forms, such as aged garlic extract, powdered tablets, and oil, are not interchangeable. Start low and watch how you respond.

From our Garlic monograph — the full record covers uses, side effects and every documented interaction.

Read the full Garlic monograph & all interactions

Medication

About Alectinib

What Is Alectinib Used For?

Brand name: Alecensa

Alecensa (alectinib) is used in adults with non-small cell lung cancer (NSCLC) whose tumors test positive for a gene change called ALK (anaplastic lymphoma kinase). Your tumor must be confirmed ALK-positive by an FDA-approved test before starting treatment.

Alecensa is approved for two situations: as adjuvant treatment (after surgery to remove the tumor, for tumors that are large enough or have spread to nearby lymph nodes) to help prevent the cancer from coming back, and for metastatic NSCLC (cancer that has already spread to other areas of the body).

Most-Reported Side Effects for Alectinib Hydrochloride

From FAERS, the FDA’s public side-effect reporting system (7,249 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 518 reports

Constipation 445 reports

Rash 257 reports

Dyspnea 234 reports

Disease progression 210 reports

See full Alectinib drug information

Keep checking

Other Drugs & Garlic

Browse every other medication we’ve checked against Garlic — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major

989Moderate

0Minor

1,840No known interaction

989 Moderate 1,840 No interaction

Moderate

989 interactions

Showing 60 of 989 moderate interactions — see all 989 on the Garlic page.

No interaction 1,840 drugs checked — show the list

We also checked Garlic against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 1,840 medications checked with no known interaction — see the full Garlic list.

See the full Garlic interactions page

See every supplement checked against Alectinib Hydrochloride, ranked by severity

Evidence & sources

Garlic References

The 154 references that drive our Garlic monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

Silagy CA, Neil HA. A meta-analysis of the effect of garlic on blood pressure. J Hypertens 1994;12:463-8. DOI
McMahon FG, Vargas R. Can garlic lower blood pressure? A pilot study. Pharmacotherapy 1993;13:406-7. DOI
Auer W, Eiber A, Hertkorn E, et al. Hypertension and hyperlipidaemia: garlic helps in mild cases. Br J Clin Pract Suppl 1990;69:3-6.
Garty BZ. Garlic burns. Pediatrics 1993;91:658-9.
Rose KD, Croissant PD, Parliament CF, Levin MB. Spontaneous spinal epidural hematoma with associated platelet dysfunction from excessive garlic ingestion: a case report. Neurosurg 1990;26:880-2. PubMed
Burnham BE. Garlic as a possible risk for postoperative bleeding. Plast Reconstr Surg 1995;95:213.
Sunter WH. Warfarin and garlic. Pharm J 1991;246:722.
Berthold HK, Sudhop T, von Bergmann K. Effect of a garlic oil preparation on serum lipoproteins and cholesterol metabolism. JAMA 1998;279:1900-2.
Steiner M, Khan AH, Holbert D, Lin RI. A double-blind crossover study in moderately hypercholesterolemic men that compared the effect of aged garlic extract and placebo administration on blood lipids. Am J Clin Nutr 1996;64:866-70. PubMed
Steiner M, Lin RS. Changes in platelet function and susceptibility of lipoproteins to oxidation associated with administration of aged garlic extract. J Cardiovasc Pharmacol 1998;31:904-8. PubMed
Gwilt PR, Lear CL, Tempero MA, et al. The effect of garlic extract on human metabolism of acetaminophen. Cancer Epidemiol Biomarkers Prev 1994;3:155-60.
Rahman K, Billington D. Dietary supplementation with aged garlic extract inhibits ADP-induced platelet aggregation in humans. J Nutr 2000;130:2662-5. PubMed
Bloch AS. Pushing the Envelope of Nutrition Support: Complementary Therapies. Nutrition 2000;16:236-9. PubMed
Steiner M, Li W. Aged garlic extract, a modulator of cardiovascular risk factors: a dose-finding study on the effects of AGE on platelet functions. J Nutr 2001;131:980S-4S. PubMed
Mader FH. Treatment of hyperlipidaemia with garlic-powder tablets. Evidence from the German Association of General Practitioners' multicentric placebo-controlled double-blind study. Arzneimittelforschung 1990;40:1111-6.
Vorberg G, Schneider B. Therapy with garlic: results of a placebo-controlled, double-blind study. Br J Clin Pract Symp Suppl 1990;69:7-11.
Simons LA, Balasubramaniam S, von Konigsmark M, et al. On the effect of garlic on plasma lipids and lipoproteins in mild hypercholesterolaemia. Atherosclerosis 1995;113:219-25. PubMed
Neil HA, Silagy CA, Lancaster T, et al. Garlic powder in the treatment of moderate hyperlipidaemia: a controlled trial and meta-analysis. J R Coll Physicians Lond 1996;30:329-34. DOI
Koscielny J, Klussendorf D, Latza R, et al. The antiatherosclerotic effect of Allium sativum. Atherosclerosis 1999;144:237-49. PubMed
Kiesewetter H, Jung F, Jung EM, et al. Effects of garlic coated tablets in peripheral arterial occlusive disease. Clin Investig 1993;71:383-6. PubMed
Kiesewetter H, Jung F, Jung EM, et al. Effect of garlic on platelet aggregation in patients with increased risk of juvenile ischaemic attack. Eur J Clin Pharmacol 1993;45:333-6. PubMed
Legnani C, Frascaro M, Guazzaloca G, et al. Effects of a dried garlic preparation on fibrinolysis and platelet aggregation in healthy subjects. Arzneimittelforschung 1993;43:119-22.
Mennella JA, Johnson A, Beauchamp GK. Garlic ingestion by pregnant women alters the odor of amniotic fluid. Chem Senses 1995;20:207-9. PubMed
Mennella JA, Beauchamp GK. Maternal diet alters the sensory qualities of human milk and the nursling's behavior. Pediatrics 1991;88:737-44. DOI
Mennella JA, Beauchamp GK. The effects of repeated exposure to garlic-flavored milk on the nursling's behavior. Pediatr Res 1993;34:805-8. PubMed
Cronin E. Dermatitis of the hands in caterers. Contact Dermatitis 1987;17:265-9. PubMed
Lee TY, Lam TH. Contact dermatitis due to topical treatment with garlic in Hong Kong. Contact Dermatitis 1991;24:193-6. PubMed
Bruynzeel DP. Bulb dermatitis. Dermatological problems in the flower bulb industries. Contact Dermatitis 1997;37:70-7.
Stevinson C, Pittler MH, Ernst E. Garlic for treating hypercholesterolemia: a meta-analysis of randomized clinical trials. Ann Intern Med 2000;133:420-9. PubMed
Ackermann RT, Mulrow CD, Ramirez G, et al. Garlic shows promise for improving some cardiovascular risk factors. Arch Intern Med 2001;161:813-24. PubMed
Piscitelli SC, Burstein AH, Welden N, et al. The effect of garlic supplements on the pharmacokinetics of saquinavir. Clin Infect Dis 2002;34:234-8. PubMed
Ziaei S, Hantoshzadeh S, Rezasoltani P, Lamyian M. The effect of garlic tablet on plasma lipids and platelet aggregation in nulliparous pregnants at high risk of preeclampsia. Eur J Obstet Gynecol Reprod Biol 2001;99:201-6.. PubMed
Markowitz JS, Devane CL, Chavin KD, et al. Effects of garlic (Allium sativum L.) supplementation on cytochrome P450 2D6 and 3A4 activity in healthy volunteers. Clin Pharmacol Ther 2003;74:170-7.. PubMed
Josling P. Preventing the common cold with a garlic supplement: a double-blind, placebo-controlled survey. Adv Ther 2001;18:189-93. PubMed
Gurley BJ, Gardner SF, Hubbard MA, et al. Cytochrome P450 phenotypic ratios for predicting herb-drug interactions in humans. Clin Pharmacol Ther 2002;72:276-87.. PubMed
Farnsworth N, Bingel A, Cordell G, et al. Potential value of plants as sources of new antifertility agents I. J Pharm Sci 1975;64:535-98. DOI
Carden SM, Good WV, Carden PA, Good RM. Garlic and the strabismus surgeon. Clin Experiment Ophthalmol 2002;30:303-4. PubMed
Kanerva L, Estlander T, Jolanki R. Occupational allergic contact dermatitis from spices. Contact Dermatitis 1996;35:157-62. PubMed
Dehghani F, Merat A, Panjehshahin MR, Handjani F. Healing effect of garlic extract on warts and corns. Int J Dermatol 2005;44:612-5. PubMed
Dhamija P, Malhotra S, Pandhi P. Effect of oral administration of crude aqueous extract of garlic on pharmacokinetic parameters of isoniazid and rifampicin in rabbits. Pharmacology 2006;77:100-4. PubMed
Macan H, Uykimpang R, Alconcel M, et al. Aged garlic extract may be safe for patients on warfarin therapy. J Nutr 2006;136(3 Suppl):793S-795S. PubMed
Hubbard VG, Goldsmith P. Garlic-fingered chefs. Contact Dermatitis 2005;52:165-6. PubMed
Mohammed Abdul MI, Jiang X, Williams KM, et al. Pharmacodynamic interaction of warfarin with cranberry but not with garlic in healthy subjects. Br J Pharmacol 2008;154:1691-700. PubMed
Ried K, Frank OR, Stocks NP, et al. Effect of garlic on blood pressure: A systematic review and meta-analysis. BMC Cardiovasc Disord 2008;8:13. PubMed
Cox MC, Low J, Lee J, et al. Influence of garlic (Allium sativum) on the pharmacokinetics of docetaxel. Clin Cancer Res 2006;12:4636-40.
van der Walt, A., Lopata, A. L., Nieuwenhuizen, N. E., and Jeebhay, M. F. Work-related allergy and asthma in spice mill workers - The impact of processing dried spices on IgE reactivity patterns. Int Arch.Allergy Immunol. 2010;152(3):271-278. PubMed
Huang, J., Frohlich, J., and Ignaszewski, A. P. The impact of dietary changes and dietary supplements on lipid profile. Can J Cardiol 2011;27(4):488-505. PubMed
Hasani-Ranjbar, S., Nayebi, N., Moradi, L., Mehri, A., Larijani, B., and Abdollahi, M. The efficacy and safety of herbal medicines used in the treatment of hyperlipidemia; a systematic review. Curr.Pharm.Des 2010;16(26):2935-2947. PubMed
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Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Garlic and Alectinib Hydrochloride Together: Common Questions

Is it safe to take Garlic with Alectinib Hydrochloride?

We do not list a known interaction between Garlic and Alectinib Hydrochloride. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.

Do Garlic and Alectinib Hydrochloride have any of the same side effects?

Yes — our sources link each of them separately to 10 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

Should I take Garlic and Alectinib Hydrochloride at the same time of day?

At least one FDA label for a product containing Alectinib Hydrochloride says to take it with food. If you take Garlic on an empty stomach out of habit, keep them separate and take Alectinib Hydrochloride with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Alectinib Hydrochloride products can differ — so check the directions on your own box. This is about absorption, not an interaction.

How was the Garlic and Alectinib Hydrochloride combination checked?

Interactions in our licensed database are recorded against drug classes. Alectinib Hydrochloride is filed under 3 classifications, and Garlic has documented interactions with 12 drug classes — none of Alectinib Hydrochloride's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.

Does Garlic interact with any other medications?

Yes. Garlic has 989 documented drug interactions in our database — Alectinib Hydrochloride is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

Does Alectinib Hydrochloride interact with any supplements?

Yes. Alectinib Hydrochloride has documented interactions with 74 supplements in our database — Garlic is not one of them. The Alectinib Hydrochloride interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.