Clonidine .17 mg Tablet, Extended Release, 30-count
Other active recalls for Clonidine (different manufacturers) — 3 · tap to view
🆔 Identity & classification
Where does this data come from?
🏷️ RxNorm drug class
This medicine belongs to the Central alpha-2 Adrenergic Agonist class.
Where does this data come from?
🏭 Manufacturer & labeler
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🩺 Clinical
Clonidine is used alone or in combination with other medications to treat high blood pressure. Clonidine is also used alone or in combination with other medications as part of a treatment program to control symptoms of attention deficit hyperactivity disorder (ADHD; more difficulty focusing, controlling actions, and remaining still or quiet than other people who are the same age) in children 6 years of age and older. Clonidine is in a class of medications called centrally acting alpha-agonist hypotensive agents. Clonidine treats high blood pressure by decreasing your heart rate and relaxing th...
Read the full MedlinePlus article ↗- You're right that it's used for several different conditions — that can be confusing. Depending on the product, clonidine is prescribed to lower high blood pressure in adults, to t...
- What exactly is clonidine used for — I've seen it mentioned for totally different things?
- Drowsiness is one of the most common side effects, especially when you first start or when your dose goes up. Many people find it eases a bit over time. Until you know how it affec...
- Will clonidine make me too sleepy to function?
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Clonidine — tap one for details:
Clonidine may be associated with lower levels of 1 nutrient — worth a chat with your pharmacist, not a cause for alarm.
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Ask a licensed pharmacist directly — free, answered by our team.
💊 What it looks like
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🧪 Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII OP1R32D61U
Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
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UNII 2S7830E561
Crospovidone is a synthetic polymer derived from povidone. It acts as a disintegrant, helping the tablet or capsule break apart quickly in the stomach so the active ingredient can be absorbed.
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UNII 3NXW29V3WO
Hypromellose is a plant-based thickener made from cellulose. It's used in medicines as a binder to hold ingredients together, a coating for tablets, and a thickener for liquids.
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UNII EWQ57Q8I5X
Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
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UNII 70097M6I30
Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
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UNII U076Q6Q621
Polyethylene glycol 1000 is a synthetic compound made from ethylene oxide. It serves as a solvent, lubricant, and humectant in medicines, helping dissolve active ingredients and improve how the product flows and feels.
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UNII FZ989GH94E
Povidone is a synthetic polymer made from a plastic-like material. It acts as a binder to hold tablet ingredients together and as a disintegrant to help the tablet break apart in your stomach so the medicine can be absorbed.
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UNII 1699G8679Z
A synthetic polymer that acts as a binder and helps hold tablet or capsule ingredients together. It may also be used to improve how the medicine dissolves or is absorbed in the digestive system.
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UNII IJF18F77L3
Sodium silicate is a glassy, water-soluble compound made from silica and sodium. In medicines, it acts as a binder to hold ingredients together, a disintegrant to help tablets break apart, and sometimes as an absorbent or anti-caking agent.
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UNII 15FIX9V2JP
Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.
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UNII XHX3C3X673
Triacetin is a clear, oily liquid made from glycerin and acetic acid. It works as a plasticizer and solvent in medicines, helping soften coatings and improve how liquids mix together in formulations.
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UNII L9MK238N77
Vinyl acetate is a synthetic polymer used primarily as a film-coating agent in tablets and capsules. It helps create a smooth, protective outer layer that controls how quickly the medicine dissolves and improves appearance.
12 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
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💲 Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Clonidine .17 mg 52817-0375-30 | TruPharma, | 30 tablets | $15.236 | — | Availability likely | — |
| Clonidine .17 mgthis 68134-0603-30 | PALMETTO | 30 tablets | — | — | FDA listed | — |
| Nexiclon XR .17 mg 71511-0503-30 | Rosemont | 30 tablets | — | — | FDA listed | — |
Where does this data come from?
⏳ Availability & generic status
FDA-approved generic versions are listed, and recent pricing/market data suggests they may be available — see Therapeutic equivalents.
Why the date isn’t exact: Generic timing can change because patents may be challenged, settled, licensed, added, removed, or worked around with a narrower label — and FDA approval does not always mean a pharmacy can get the generic today.
🛈 What do these terms mean?
- Patent
- Legal protection listed in the Orange Book that may delay generic approval or launch. Issued by the U.S. Patent & Trademark Office.
- Substance patent
- Covers the active drug molecule itself — the hardest to design around. A generic generally can’t launch until it expires.
- Formulation (product) patent
- Covers a specific formulation or dosage form. A generic can sometimes work around it with a different formulation.
- Method-of-use patent
- A patent covering one specific approved use of the drug — not necessarily the whole molecule. A generic can sometimes launch with a “skinny label” that carves out the protected use and keeps the others.
- Skinny label
- A generic label that omits a still-patented use when the FDA allows it — letting a generic reach the market for the unprotected uses.
- Exclusivity
- FDA-granted marketing protection, separate from patents — e.g. 5-yr new chemical entity, 7-yr orphan drug, or a +6-month pediatric extension.
- Paragraph IV
- A generic applicant’s formal challenge to a listed patent. It can potentially lead to earlier generic entry, but often involves litigation or a settlement.
- RLD / RS
- Reference Listed Drug — the brand product the FDA uses as the reference for generic applications. Reference Standard — the product the FDA expects generics to compare against in bioequivalence testing.
- TE / AB rating
- FDA therapeutic-equivalence rating. An AB rating generally means the FDA considers a generic therapeutically equivalent to — and substitutable for — the brand.
- LOE (loss of exclusivity)
- The latest patent or exclusivity currently listed — the loss-of-exclusivity / latest-listed-protection date shown on this page. Paragraph-IV challenges and settlements can move the real date earlier; FDA approval and a manufacturer’s decision to market can move it later.
Built from the FDA Orange Book. The bars above are scaled to each protection’s expiry; the red LOE marker is the last one to lapse.
| Patent | Type | Use code | Expires |
|---|---|---|---|
| US 8337890 ↗ | Drug product | — | Apr 17, 2027 |
| US 8623409 ↗ | Drug product | — | Sep 8, 2031 |
| US 8337890 ↗ | Drug product | — | Apr 17, 2027 |
| US 8623409 ↗ | Drug product | — | Sep 8, 2031 |
Is there a generic version of CLONIDINE HCL ER 0.17 MG TAB?
The FDA approved a generic — why can’t I get it at my pharmacy yet?
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Where does this data come from?
📊 Medicare Part D spend CMS · PART D · 2026 (Q1)
🔬 Reported adverse events (FAERS)
Top reported reactions
Age at onset
Reporter sex
Serious outcomes
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 68134-0603-30 You're viewing this | 30 TABLET, EXTENDED RELEASE in 1 BOTTLE, PLASTIC (68134-603-30) | 2022-03-01 | Active |
🧭 About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |
Questions about this listing
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE Clonidine extended-release tablets are indicated in the treatment of hypertension. Clonidine extended-release tablets may be employed alone or concomitantly with other antihypertensive agents. Clonidine extended-release tablets are a central alpha-adrenergic agonist indicated for: Treatment of hypertension ( 1 )
⏱️ Dosage and Administration ▾
2 DOSAGE AND ADMINISTRATION The dose of clonidine extended-release tablets must be adjusted according to the patient's individual blood pressure response. The following is a general guide to its administration in adults. Initial dose: 0.17 mg once daily.
Elderly patients may benefit from a lower initial dose. Initial dose is recommended to be administered at bedtime. ( 2.1 ) Maintenance dose: Further increments of 0.09 mg once daily may be made at weekly intervals if necessary until the desired response is achieved.
The therapeutic doses most commonly employed have ranged from 0.17 mg to 0.52 mg once daily. ( 2.2 ) Patients with renal impairment: Up-titrate slowly (2.4)
2.1Initial Dose Dosing with clonidine extended-release tablets should be initiated at 0.17 mg once daily. Elderly patients may benefit from a lower initial dose [ see Use in Specific Populations (8.4) ]. Initial dose is recommended to be administered at bedtime.
2.2Maintenance Dose Further increments of 0.09 mg once daily may be made at weekly intervals if necessary until the desired response is achieved. The therapeutic doses most commonly employed have ranged from 0.17 mg to 0.52 mg once daily. Clonidine extended-release tablets were studied at doses of 0.17 to 0.52 mg once daily. Doses higher than 0.52 mg per day were not evaluated and are not recommended.
2.3Patients Currently Using Clonidine Hydrochloride Immediate-Release Tablets The recommended dose of clonidine extended-release tablets for patients who are currently taking clonidine hydrochloride immediate-release tablets is provided in the table below. Clonidine Extended-Release Tablets Equivalent dose of Clonidine HCl Immediate-Release Tablets Initial Dose 0.17 mg once daily 0.1 mg twice daily Maintenance Dose Titration Increments 0.09 mg once daily 0.05 mg twice daily Common Doses Used for Blood Pressure Effect 0.17 mg once daily 0.1 mg twice daily 0.34 mg once daily 0.2 mg twice daily 0.52 mg once daily 0.3 mg twice daily
2.4Renal Impairment Adjust dosage according to the degree of impairment. In patients with end stage kidney disease on maintenance dialysis, start at 0.09 mg per day and up-titrate slowly to minimize dose related adverse events. Monitor patients carefully, especially for bradycardia, sedation and hypotension.
Only a minimal amount of clonidine is removed during routine hemodialysis. In patients with moderate to severe kidney impairment not undergoing dialysis, initiate clonidine at the same dose as for patients without renal impairment. Up-titrate slowly and monitor for dose-related adverse events.
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS 0.17 mg Extended-Release Tablets (clonidine base) 0.26 mg Extended-Release Tablets (clonidine base) Extended-Release Tablets: 0.17, 0.26 mg clonidine base
⛔ Contraindications ▾
4 CONTRAINDICATIONS Clonidine extended-release tablets should not be used in patients with known hypersensitivity to clonidine [ see Warnings and Precautions (5.2) ]. Known hypersensitivity to clonidine (rash, angioedema) (4)
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS Patients should not discontinue therapy without consulting a physician. Dose reduction should be performed gradually over a 2- to 4-day period to avoid withdrawal symptomatology. Rare instances of hypertensive encephalopathy, cerebrovascular accidents and death have been reported after clonidine withdrawal.
( 5.1 ) Monitor closely and up-titrate slowly in patients with severe coronary insufficiency, conduction disturbances, recent myocardial infarction, cerebrovascular disease, or chronic renal failure. ( 5.2 ) Patients who engage in potentially hazardous activities, such as operating machinery or driving, should be advised of a possible sedative effect of clonidine. ( 5.2 ) In perioperative use, clonidine extended-release tablets may be administered up to 28 hours prior to surgery and resumed the following day.
( 5.3 )
5.1Withdrawal Instruct patients not to discontinue therapy without consulting their physician. Sudden cessation of clonidine treatment has resulted in symptoms such as nervousness, agitation, headache, and tremor accompanied or followed by a rapid rise in blood pressure and elevated catecholamine concentrations in the plasma. The likelihood of such reactions to discontinuation of clonidine therapy appears to be greater after administration of higher doses or continuation of concomitant beta-blocker treatment and special caution is therefore advised in these situations.
Rare instances of hypertensive encephalopathy, cerebrovascular accidents and death have been reported after clonidine withdrawal. When discontinuing therapy with clonidine extended-release tablets, reduce the dose gradually over 2 to 4 days to avoid withdrawal symptoms. An excessive rise in blood pressure following discontinuation of clonidine extended-release tablets can be reversed by administration of oral clonidine hydrochloride or by intravenous phentolamine.
If therapy is to be discontinued in patients receiving a beta-blocker and clonidine concurrently, the beta-blocker should be withdrawn several days before the gradual discontinuation of clonidine extended-release tablets. Because children commonly have gastrointestinal illnesses that lead to vomiting, they may be particularly susceptible to hypertensive episodes resulting from abrupt inability to take medication.
5.2General Precautions In patients who have developed localized contact sensitization to a clonidine transdermal system, substitution of oral clonidine therapy may be associated with the development of a generalized skin rash. In patients who develop an allergic reaction to a clonidine transdermal system, substitution of oral clonidine may also elicit an allergic reaction (including generalized rash, urticaria, or angioedema). Monitor carefully and up-titrate slowly in patients with severe coronary insufficiency, conduction disturbances, recent myocardial infarction, cerebrovascular disease, or chronic renal failure.
Patients who engage in potentially hazardous activities, such as operating machinery or driving, should be advised of a possible sedative effect of clonidine. The sedative effect may be increased by concomitant use of alcohol, barbiturates, or other sedating drugs.
5.3Perioperative Use Clonidine extended-release tablets may be administered up to 28 hours prior to surgery and resumed the following day. Blood pressure should be carefully monitored during surgery and additional measures to control blood pressure should be available if required.
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following serious adverse reactions are discussed in detail elsewhere in the labeling: Withdrawal [ see Warnings and Precautions (5.1) ] Allergic reactions [ see Warnings and Precautions (5.2) ] There is very little experience with clonidine extended-release tablets in controlled trials. Based on this limited experience, the adverse event profile appears similar with the immediate-release clonidine formulation. The most commonly expected adverse reactions are dry mouth, drowsiness, and dizziness.
( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Palmetto Pharmaceuticals, Inc. at 1-844-627-7696 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .
6.1Clonidine Extended-Release Tablets Clinical Trial Experience There is very limited experience with clonidine extended-release tablets in controlled trials. Based on this limited experience, the adverse event profile appears similar with to the immediate-release clonidine formulation.
6.2Experience with Immediate-Release Clonidine Most adverse reactions are mild and tend to diminish with continued therapy. The most frequent (which also appear to be dose-related) are dry mouth (approximately 40%); drowsiness (approximately 33%); dizziness (approximately 16%); constipation and sedation (approximately 10% each). The following less frequent adverse reactions have also been reported in patients receiving immediate-release clonidine, but in many cases patients were receiving concomitant medication and a causal relationship has not been established.
Body as a Whole: Fatigue, fever, headache, pallor, weakness, and withdrawal syndrome. Also reported were a weakly positive Coombs’ test and increased sensitivity to alcohol. Cardiovascular: Bradycardia, congestive heart failure, electrocardiographic abnormalities (i.e., sinus node arrest, junctional bradycardia, high degree AV block and arrhythmias), orthostatic symptoms, palpitations, Raynaud’s phenomenon, syncope, and tachycardia.
Cases of sinus bradycardia and atrioventricular block have been reported, both with and without the use of concomitant digitalis. Central Nervous System (CNS): Agitation, anxiety, delirium, delusional perception, hallucinations (including visual and auditory), insomnia, mental depression, nervousness, other behavioral changes, paresthesia, restlessness, sleep disorder, and vivid dreams or nightmares. Dermatological: Alopecia, angioneurotic edema, hives, pruritus, rash, and urticaria.
Gastrointestinal: Abdominal pain, anorexia, constipation, hepatitis, malaise, mild transient abnormalities in liver function tests, nausea, parotitis, pseudo-obstruction (including colonic pseudo-obstruction), salivary gland pain, and vomiting. Genitourinary: Decreased sexual activity, difficulty in micturition, erectile dysfunction, loss of libido, nocturia, and urinary retention. Hematologic: Thrombocytopenia.
Metabolic: Gynecomastia, transient elevation of blood glucose or serum creatine phosphokinase, and weight gain. Musculoskeletal: Leg cramps and muscle or joint pain. Oro-otolaryngeal: Dryness of the nasal mucosa.
Ophthalmological: Accommodation disorder, blurred vision, burning of the eyes, decreased lacrimation, and dryness of eyes.
🔄 Drug Interactions ▾
7 DRUG INTERACTIONS No drug interaction studies have been conducted with clonidine extended-release tablets. The following have been reported with other oral formulations of clonidine. Clonidine may potentiate the CNS-depressive effects of alcohol, barbiturates or other sedating drugs.
If a patient receiving clonidine hydrochloride is also taking tricyclic antidepressants, the hypotensive effect of clonidine may be reduced, necessitating an increase in the clonidine dose. Monitor heart rate in patients receiving clonidine concomitantly with agents known to affect sinus node function or AV nodal conduction, e.g., digitalis, calcium channel blockers, and beta-blockers. Sinus bradycardia resulting in hospitalization and pacemaker insertion has been reported in association with the use of clonidine concomitantly with diltiazem or verapamil.
Amitriptyline in combination with clonidine enhances the manifestation of corneal lesions in rats [ see Nonclinical Toxicology (13.2) ]. Alcohol: Based on in vitro studies, high concentration of alcohol may increase the rate of release of clonidine extended-release tablets. Sedating drugs: Clonidine may potentiate the CNS-depressive effects of alcohol, barbiturates or other sedating drugs.
( 7 ) Tricyclic antidepressants: May reduce the hypotensive effect of clonidine, necessitating an increase in clonidine dose. ( 7 ) Drugs known to affect sinus node function or AV nodal conduction (e.g., digitalis, calcium channel blockers, beta-blockers): Additive effects such as bradycardia and AV block. ( 7 )
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS Pregnancy Category C ( 8.1 ) Clonidine is secreted in human milk. ( 8.2 ) Safety and effectiveness in children have not been established. ( 8.3 ) Renal impairment: Dose may need adjustment. ( 2.4 )
8.1Pregnancy Pregnancy Category C. Reproduction studies performed in rabbits at doses up to approximately 3 times the oral maximum recommended daily human dose (MRDHD) of clonidine hydrochloride produced no evidence of a teratogenic or embryotoxic potential in rabbits. In rats, however, doses as low as 1/3 the oral MRDHD (1/15 the MRDHD on a mg/m 2 basis) of clonidine were associated with increased resorptions in a study in which dams were treated continuously from 2 months prior to mating.
Increased resorptions were not associated with treatment at the same time or at higher dose levels (up to 3 times the oral MRDHD) when the dams were treated on gestation days 6 to 15. Increases in resorption were observed at much higher dose levels (40 times the oral MRDHD on a mg/kg basis; 4 to 8 times the MRDHD on a mg/m 2 basis) in mice and rats treated on gestation days 1 to 14 (lowest dose employed in the study was 500 mcg/kg). No adequate, well-controlled studies have been conducted in pregnant women.
Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.
8.2Nursing Mothers Clonidine is secreted in human milk.
8.3Pediatric Use Safety and effectiveness in pediatric patients have not been established.
8.4Geriatric Use Elderly patients may benefit from a lower initial dose [ see Dosage and Administration (2) ].
8.5Patients with Renal Impairment The initial dosage should be based on the degree of impairment. Monitor patients carefully for hypotension and bradycardia, and titrate to higher doses cautiously. Only a minimal amount of clonidine is removed during routine hemodialysis.
🆘 Overdosage ▾
10 OVERDOSAGE Hypertension may develop early and may be followed by hypotension, bradycardia, respiratory depression, hypothermia, drowsiness, decreased or absent reflexes, weakness, irritability and miosis. The frequency of CNS depression may be higher in children than adults. Large overdoses may result in reversible cardiac conduction defects or dysrhythmias, apnea, coma, and seizures.
Signs and symptoms of overdose generally occur within 30 minutes to two hours after exposure. As little as 0.1 mg of clonidine has produced signs of toxicity in children. There is no specific antidote for clonidine overdosage.
Clonidine overdosage may result in the rapid development of CNS depression; therefore, induction of vomiting with ipecac syrup is not recommended. Gastric lavage may be indicated following recent and/or large ingestions. Administration of activated charcoal and/or a cathartic may be beneficial.
Supportive care may include atropine sulfate for bradycardia, intravenous fluids and/or vasopressor agents for hypotension and vasodilators for hypertension. Naloxone may be a useful adjunct for the management of clonidine-induced respiratory depression, hypotension and/or coma; blood pressure should be monitored since the administration of naloxone has occasionally resulted in paradoxical hypertension. Tolazoline administration has yielded inconsistent results and is not recommended as first-line therapy.
Dialysis is not likely to significantly enhance the elimination of clonidine. The largest overdose reported to date involved a 28-year old male who ingested 100 mg of clonidine hydrochloride powder. This patient developed hypertension followed by hypotension, bradycardia, apnea, hallucinations, semicoma, and premature ventricular contractions.
The patient fully recovered after intensive treatment. Plasma clonidine levels were 60 ng/mL after 1 hour, 190 ng/mL after 1.5 hours, 370 ng/mL after 2 hours, and 120 ng/mL after 5.5 and 6.5 hours. In mice and rats, the oral LD 50 of clonidine is 206 and 465 mg/kg, respectively.
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action Clonidine stimulates alpha-adrenoreceptors in the brain stem. This action results in reduced sympathetic outflow from the central nervous system and in decreases in peripheral resistance, renal vascular resistance, heart rate, and blood pressure. The patient’s maximum blood pressure decrease occurred within 6 to 8 hours.
Renal blood flow and glomerular filtration rate remain essentially unchanged. Normal postural reflexes are intact; therefore, orthostatic symptoms are mild and infrequent.
12.2Pharmacodynamics Clonidine extended-release tablets were was studied in an open-label crossover, force titration, partially randomized trial in patients with mild and moderate essential hypertension who were on two or fewer antihypertensive medications. The trial was designed to compare steady-state exposures between the Clonidine extended-release tablets and clonidine immediate-release tablets. There were up- and down-titration phases.
There was no washout period between phases or treatments. Studies with immediate-release clonidine hydrochloride have demonstrated a moderate reduction (15% to 20%) in cardiac output in the supine position with no change in the peripheral resistance. At a 45° tilt, there is a smaller reduction in cardiac output and a decrease of peripheral resistance.
During long-term therapy, cardiac output tends to return to control values, while peripheral resistance remains decreased. Slowing of the pulse rate has been observed in most patients given clonidine, but the drug does not alter normal hemodynamic response to exercise. Tolerance to the antihypertensive effect may develop in some patients, necessitating a re-evaluation of therapy.
Other studies in patients have provided evidence of a reduction in plasma renin activity and in the excretion of aldosterone and catecholamines. The exact relationship of these pharmacologic actions to the antihypertensive effect of clonidine has not been fully elucidated. Clonidine acutely stimulates growth hormone release in both children and adults, but does not produce a chronic elevation of growth hormone with long-term use.
12.3Pharmacokinetics Following single doses of clonidine extended-release tablets 0.17 mg, clonidine mean (S.D.) peak plasma concentrations of 0.49 (±0.09) ng/mL occurred at 7.8 (±1.7) hours. The plasma half-life of clonidine was 13.7 (±3.0) hours. There was no effect of food on the pharmacokinetic parameters.
A = Clonidine Extended-Release Tablets (0.17 mg QD) Fasted B = Clonidine IR Tablet (0.1 mg clonidine hydrochloride Q12h) Fasted C = Clonidine Extended-Release Tablets (0.17 mg QD) Fed In the multi-dose study, mild to moderate hypertensive patients were randomized to ER and BID IR clonidine formulations. The following plot shows the sitting blood pressure values for each treatment group at Day 22. The half-life may increase up to 41 hours in patients with severe impairment of renal function.
Following oral administration of clonidine about 40 to 60% of the absorbed dose is recovered in the urine as unchanged drug in 24 hours. About 50% of the absorbed dose is metabolized in the liver. figure1 figure2
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING Clonidine Extended-Release Tablets are scored, splitable, capsule-shaped coated tablets that are supplied in bottles of 30. Strength Color Markings NDC 0.17 mg White NP 2 68134-603-30 Store at 20º to 25ºC (68º to 77ºF); excursions permitted to 15º to 30ºC (59º to 86ºF). [See USP Controlled Room Temperature.] Dispense in a tight, light-resistant container with a child-resistant closure.
📋 Description ▾
11 DESCRIPTION Clonidine extended-release tablets are available for oral administration in two dose strengths: 0.17 mg and 0.26 mg. The 0.17 mg and 0.26 mg tablets are equivalent to 0.2 mg and 0.3 mg of immediate-release clonidine hydrochloride, respectively. Clonidine hydrochloride, a centrally active alpha-adrenergic agonist, is an imidazoline derivative and exists as a mesomeric compound.
The chemical name is 2-(2.6-dichlorophenylamino)-2-imidazoline hydrochloride. The following is the structural formula: C 9 H 9 C l2 N 3 ·HCl Mol. Wt.
266.56 Clonidine hydrochloride is an odorless, bitter, white crystalline substance soluble in water and alcohol. The inactive ingredients are: crospovidone, dental-type silica, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyvinyl acetate, povidone, sodium polystyrene sulfonate, triacetin. The 0.17 mg tablet also contains hypromellose, polyethylene glycol, and titanium dioxide.
The 0.26 mg tablet also contains D&C yellow #10 aluminum lake, FD&C yellow #6 aluminum lake, fractionated coconut oil, maltodextrin, polydextrose, talc, and titanium dioxide. molecularstructure
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Caution patients against interruption of clonidine extended-release tablet therapy without their healthcare provider’s advice. Advise patients who engage in potentially hazardous activities, such as operating machinery or driving, of a possible sedative effect of clonidine. The sedative effect may be increased by concomitant use of alcohol, barbiturates, or other sedating drugs.