encouraged [12:<12 years: Syrup: Clemastine fumarate 1.34 mg (1 mg base) twice daily. Maximum daily dose: Clemastine fumarate 4.02 mg/ day (3 mg/ day base) Children 12 years and Adolescents: Syrup, tablets: Clemastine fumarate 2.68 mg (2 mg base) twice daily or a single 2.68 mg dose, repeat as needed up to a maximum of 2.68 mg 3 times a day. Maximum daily dose: Clemastine fumarate 8.04 mg/ day (6 mg/ day base) Dosing: Renal Impairment There are no dosage adjustments provided in the manufacturer's labeling. Dosing: Hepatic Impairment There are no dosage adjustments provided in the manufacturer's labeling. Storage Store at controlled room temperature, between 20 C and 25 C (68 F and 77 F). Drug Interactions AbobotulinumtoxinA: Anticholinergic Agents may enhance the anticholinergic effect of AbobotulinumtoxinA. Monitor therapy Acetylcholinesterase Inhibitors: May diminish the therapeutic effect of Anticholinergic Agents. Anticholinergic Agents may diminish the therapeutic effect of Acetylcholinesterase Inhibitors. Monitor therapy Aclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination Alcohol (Ethyl): CNS Depressants may enhance the CNS depressant effect of Alcohol (Ethyl). Monitor therapy Amantadine: May enhance the anticholinergic effect of Anticholinergic Agents. Monitor therapy Amifampridine: May diminish the anticholinergic effect of Anticholinergic Agents. Anticholinergic Agents may diminish the therapeutic effect of Amifampridine. Monitor therapy Amphetamines: May diminish the sedative effect of Antihistamines. Monitor therapy Anticholinergic Agents: May enhance the adverse/toxic effect of other Anticholinergic Agents. Monitor therapy Azelastine (Nasal): CNS Depressants may enhance the CNS depressant effect of Azelastine (Nasal). Avoid combination Benzylpenicilloyl Polylysine: Antihistamines may diminish the diagnostic effect of Benzylpenicilloyl Polylysine. Management: Suspend systemic H1 antagonists for benzylpenicilloyl-polylysine skin testing and delay testing until systemic antihistaminic effects have dissipated. A histamine skin test may be used to assess persistent antihistaminic effects. Consider therapy modification Betahistine: Antihistamines may diminish the therapeutic effect of Betahistine. Monitor therapy Blonanserin: CNS Depressants may enhance the CNS depressant effect of Blonanserin. Consider therapy modification Brimonidine (Topical): May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Buprenorphine: CNS Depressants may enhance the CNS depressant effect of Buprenorphine. Management: Consider reduced doses of other CNS depressants, and avoiding such drugs in patients at high risk of buprenorphine overuse/self-injection. Initiate buprenorphine patches (Butrans brand) at 5 mcg/hr in adults when used with other CNS depressants. Consider therapy modification Cannabis: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Chloral Betaine: May enhance the adverse/toxic effect of Anticholinergic Agents. Monitor therapy Chlormethiazole: May enhance the CNS depressant effect of CNS Depressants. Management: Monitor closely for evidence of excessive CNS depression. The chlormethiazole labeling states that an appropriately reduced dose should be used if such a combination must be used. Consider therapy modification Chlorphenesin Carbamate: May enhance the adverse/toxic effect of CNS Depressants. Monitor therapy Cimetropium: Anticholinergic Agents may enhance the anticholinergic effect of Cimetropium. Avoid combination CNS Depressants: May enhance the adverse/toxic effect of other CNS Depressants. Monitor therapy Dimethindene (Topical): May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Doxylamine: May enhance the CNS depressant effect of CNS Depressants. Management: The manufacturer of Diclegis (doxylamine/pyridoxine), intended for use in pregnancy, specifically states that use with other CNS depressants is not recommended. Monitor therapy Dronabinol: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Droperidol: May enhance the CNS depressant effect of CNS Depressants. Management: Consider dose reductions of droperidol or of other CNS agents (e.g., opioids, barbiturates) with concomitant use. Consider therapy modification Eluxadoline: Anticholinergic Agents may enhance the constipating effect of Eluxadoline. Avoid combination Flunitrazepam: CNS Depressants may enhance the CNS depressant effect of Flunitrazepam. Consider therapy modification Gastrointestinal Agents (Prokinetic): Anticholinergic Agents may diminish the therapeutic effect of Gastrointestinal Agents (Prokinetic). Monitor therapy Glucagon: Anticholinergic Agents may enhance the adverse/toxic effect of Glucagon. Specifically, the risk of gastrointestinal adverse effects may be increased. Monitor therapy Glycopyrrolate (Oral Inhalation): Anticholinergic Agents may enhance the anticholinergic effect of Glycopyrrolate (Oral Inhalation). Avoid combination Hyaluronidase: Antihistamines may diminish the therapeutic effect of Hyaluronidase. Management: Patients receiving antihistamines (particularly at larger doses) may not experience the desired clinical response to standard doses of hyaluronidase. Larger doses of hyaluronidase may be required. Consider therapy modification HYDROcodone: CNS Depressants may enhance the CNS depressant effect of HYDROcodone. Management: Avoid concomitant use of hydrocodone and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Consider therapy modification HydrOXYzine: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Ipratropium (Oral Inhalation): May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination Itopride: Anticholinergic Agents may diminish the therapeutic effect of Itopride. Monitor therapy Kava Kava: May enhance the adverse/toxic effect of CNS Depressants. Monitor therapy Levosulpiride: Anticholinergic Agents may diminish the therapeutic effect of Levosulpiride. Avoid combination Lofexidine: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Magnesium Sulfate: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Methotrimeprazine: CNS Depressants may enhance the CNS depressant effect of Methotrimeprazine. Methotrimeprazine may enhance the CNS depressant effect of CNS Depressants. Management: Reduce adult dose of CNS depressant agents by 50% with initiation of concomitant methotrimeprazine therapy. Further CNS depressant dosage adjustments should be initiated only after clinically effective methotrimeprazine dose is established. Consider therapy modification MetyroSINE: CNS Depressants may enhance the sedative effect of MetyroSINE. Monitor therapy Mianserin: May enhance the anticholinergic effect of Anticholinergic Agents. Monitor therapy Minocycline: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Mirabegron: Anticholinergic Agents may enhance the adverse/toxic effect of Mirabegron. Monitor therapy Mirtazapine: CNS Depressants may enhance the CNS depressant effect of Mirtazapine. Monitor therapy Monoamine Oxidase Inhibitors: May enhance the anticholinergic effect of Clemastine. Exceptions: Linezolid; Procarbazine; Rasagiline; Safinamide; Selegiline; Tedizolid. Monitor therapy Nabilone: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Nitroglycerin: Anticholinergic Agents may decrease the absorption of Nitroglycerin. Specifically, anticholinergic agents may decrease the dissolution of sublingual nitroglycerin tablets, possibly impairing or slowing nitroglycerin absorption. Monitor therapy OnabotulinumtoxinA: Anticholinergic Agents may enhance the anticholinergic effect of OnabotulinumtoxinA. Monitor therapy Opioid Analgesics: CNS Depressants may enhance the CNS depressant effect of Opioid Analgesics. Management: Avoid concomitant use of opioid analgesics and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Consider therapy modification Orphenadrine: CNS Depressants may enhance the CNS depressant effect of Orphenadrine. Avoid combination Oxatomide: May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination Oxomemazine: May enhance the CNS depressant effect of CNS Depressants. Avoid combination OxyCODONE: CNS Depressants may enhance the CNS depressant effect of OxyCODONE. Management: Avoid concomitant use of oxycodone and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Consider therapy modification Paraldehyde: CNS Depressants may enhance the CNS depressant effect of Paraldehyde. Avoid combination Perampanel: May enhance the CNS depressant effect of CNS Depressants. Management: Patients taking perampanel with any other drug that has CNS depressant activities should avoid complex and high-risk activities, particularly those such as driving that require alertness and coordination, until they have experience using the combination. Consider therapy modification Piribedil: CNS Depressants may enhance the CNS depressant effect of Piribedil. Monitor therapy Pitolisant: Antihistamines may diminish the therapeutic effect of Pitolisant. Monitor therapy Potassium Chloride: Anticholinergic Agents may enhance the ulcerogenic effect of Potassium Chloride. Management: Patients on drugs with substantial anticholinergic effects should avoid using any solid oral dosage form of potassium chloride. Avoid combination Potassium Citrate: Anticholinergic Agents may enhance the ulcerogenic effect of Potassium Citrate. Avoid combination Pramipexole: CNS Depressants may enhance the sedative effect of Pramipexole. Monitor therapy Pramlintide: May enhance the anticholinergic effect of Anticholinergic Agents. These effects are specific to the GI tract. Consider therapy modification Ramosetron: Anticholinergic Agents may enhance the constipating effect of Ramosetron. Monitor therapy RimabotulinumtoxinB: Anticholinergic Agents may enhance the anticholinergic effect of RimabotulinumtoxinB. Monitor therapy ROPINIRole: CNS Depressants may enhance the sedative effect of ROPINIRole. Monitor therapy Rotigotine: CNS Depressants may enhance the sedative effect of Rotigotine. Monitor therapy Rufinamide: May enhance the adverse/toxic effect of CNS Depressants. Specifically, sleepiness and dizziness may be enhanced. Monitor therapy Secretin: Anticholinergic Agents may diminish the therapeutic effect of Secretin. Management: Avoid concomitant use of anticholinergic agents and secretin. Discontinue anticholinergic agents at least 5 half-lives prior to administration of secretin. Consider therapy modification Selective Serotonin Reuptake Inhibitors: CNS Depressants may enhance the adverse/toxic effect of Selective Serotonin Reuptake Inhibitors. Specifically, the risk of psychomotor impairment may be enhanced. Monitor therapy Sodium Oxybate: May enhance the CNS depressant effect of CNS Depressants. Management: Consider alternatives to combined use. When combined use is needed, consider minimizing doses of one or more drugs. Use of sodium oxybate with alcohol or sedative hypnotics is contraindicated. Consider therapy modification Suvorexant: CNS Depressants may enhance the CNS depressant effect of Suvorexant. Management: Dose reduction of suvorexant and/or any other CNS depressant may be necessary. Use of suvorexant with alcohol is not recommended, and the use of suvorexant with any other drug to treat insomnia is not recommended. Consider therapy modification Tapentadol: May enhance the CNS depressant effect of CNS Depressants. Management: Avoid concomitant use of tapentadol and benzodiazepines or other CNS depressants when possible. These agents should only be combined if alternative treatment options are inadequate. If combined, limit the dosages and duration of each drug. Consider therapy modification Tetrahydrocannabinol: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Thalidomide: CNS Depressants may enhance the CNS depressant effect of Thalidomide. Avoid combination Thiazide and Thiazide-Like Diuretics: Anticholinergic Agents may increase the serum concentration of Thiazide and Thiazide-Like Diuretics. Monitor therapy Tiotropium: Anticholinergic Agents may enhance the anticholinergic effect of Tiotropium. Avoid combination Topiramate: Anticholinergic Agents may enhance the adverse/toxic effect of Topiramate. Monitor therapy Trimeprazine: May enhance the CNS depressant effect of CNS Depressants. Monitor therapy Umeclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination Zolpidem: CNS Depressants may enhance the CNS depressant effect of Zolpidem. Management: Reduce the Intermezzo brand sublingual zolpidem adult dose to 1.75 mg for men who are also receiving other CNS depressants. No such dose change is recommended for women. Avoid use with other CNS depressants at bedtime; avoid use with alcohol. Consider therapy modification Adverse Reactions Frequency not defined. Cardiovascular: Hypotension, palpitations, tachycardia Central nervous system: Ataxia, confusion, dizziness, drowsiness (slight to moderate), fatigue, headache, insomnia, irritability, nervousness, restlessness, sedation Dermatologic: Skin photosensitivity, skin rash Gastrointestinal: Constipation, diarrhea, epigastric distress, nausea, vomiting, xerostomia Genitourinary: Difficulty in micturition, urinary frequency, urinary retention Hematologic & oncologic: Agranulocytosis, hemolytic anemia, thrombocytopenia Hypersensitivity: Anaphylaxis Ophthalmic: Blurred vision Otic: Tinnitus Respiratory: Thickening of bronchial secretions Warnings/Precautions Concerns related to adverse effects: CNS depression: May cause CNS depression, which may impair physical or mental abilities; patients must be cautioned about performing tasks which require mental alertness (eg, operating machinery or driving). Disease-related concerns: Asthma: Use with caution in patients with a history of asthma. Antihistamines should not be used to treat lower respiratory symptoms (including asthma). Cardiovascular disease: Use with caution in patients with cardiovascular disease (including hypertension and ischemic heart disease). Increased intraocular pressure: Use with caution in patients with increased intraocular pressure or angle-closure (narrow angle) glaucoma. Prostatic hyperplasia/urinary obstruction: Use with caution in patients with prostatic hyperplasia, bladder neck obstruction, and/or GU obstruction. Pyloroduodenal obstruction: Use with caution in patients with pyloroduodenal obstruction (including stenotic peptic ulcer). Thyroid dysfunction: Use with caution in patients with thyroid dysfunction. Concurrent drug therapy issues: Drug-drug interactions: Potentially significant interactions may exist, requiring dose or frequency adjustment, additional monitoring, and/or selection of alternative therapy. Consult drug interactions database for more detailed information. Monitoring Parameters Monitor therapeutic response (eg, reduction of rhinitis, urticaria, eczema, pruritus, or other allergic symptoms) Pregnancy Risk Factor B Pregnancy Considerations Maternal clemastine use has generally not resulted in an increased risk of birth defects. Antihistamines are recommended for the treatment of rhinitis, urticaria, and pruritus with rash in pregnant women (although second generation antihistamines may be preferred). Antihistamines are not recommended for treatment of pruritus associated with intrahepatic cholestasis in pregnancy. Patient Education Discuss specific use of drug and side effects with patient as it relates to treatment. (HCAHPS: During this hospital stay, were you given any medicine that you had not taken before? Before giving you any new medicine, how often did hospital staff tell you what the medicine was for? How often did hospital staff describe possible side effects in a way you could understand?) Patient may experience fatigue, dizziness, or abdominal pain. Have patient report immediately to prescriber change in balance (HCAHPS). Educate patient about signs of a significant reaction (eg, wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat). Note: This is not a comprehensive list of all side effects. Patient should consult prescriber for additional questions. Intended Use and Disclaimer: Should not be printed and given to patients. This information is intended to serve as a concise initial reference for healthcare professionals to use when discussing medications with a patient. You must ultimately rely on your own discretion, experience and judgment in diagnosing, treating and advising patients. Next Interactions Print this page Add to My Med List More about clemastine Side Effects During Pregnancy or Breastfeeding Dosage Information Drug Images Drug Interactions Support Group Pricing & Coupons En Español 2 Reviews Add your own review/rating Drug class: antihistamines Consumer resources Clemastine Clemastine Tablets Clemastine Syrup Professional resources Clemastine Fumarate (AHFS Monograph) Clemastine (FDA) Clemastine Syrup (FDA) Other brands: 12 Hour Allergy Relief , Dayhist Allergy , Leader Allerhist Related treatment guides Allergic Rhinitis Allergic Reactions Urticaria> ]} Drug Status Rx OTC Availability Rx and/or OTC B Pregnancy Category No proven risk in humans N/A CSA Schedule Not a controlled drug Approval History Drug history at FDA Clemastine Rating 2 User Reviews 8.0 /10 2 User Reviews 8.0 Rate it! Manufacturers Sandoz Inc. Teva Pharmaceuticals USA, Inc. Drug Class Antihistamines Related Drugs antihistamines loratadine , cetirizine , Zyrtec , hydroxyzine , Claritin , promethazine Urticaria Zyrtec , promethazine , loratadine , cetirizine , Claritin , diphenhydramine , Benadryl , fexofenadine , More... Allergic Reactions prednisone , promethazine , loratadine , triamcinolone , diphenhydramine , Benadryl , EpiPen , Phenergan , More... Allergic Rhinitis prednisone , Zyrtec , promethazine , fluticasone nasal , loratadine , cetirizine , Flonase , triamcinolone nasal , More... Clemastine Images Clemastine systemic 2.68 mg (93 308 ) View all images} } on occasion
bloodbath Clemastine everyone
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