Indications

Doxylamine is indicated for Hypersensitivity reactions, Insomnia

Pharmacology

Doxylamine is an antihistamine derived from monoethanolamine possessing antimuscarinic and pronounced sedative effects

Dosage And Administration

Hypersensitivity reactionn: 25 mg every 4-6 hr. Max: 150 mg daily.

Insomnia: 25 mg given 30 minutes before retiring at night.

Should be taken with food. Take with food or milk.

Interaction

Enhance effects of CNS depressants eg alcohol, barbiturates, hypnotics, opioid analgesics, anxiolytic sedatives and antipsychotics. Atropine, TCAs, MAOIs. Can mask signs of ototoxicity caused by aminoglycosides.

Contraindications

Severe liver disease; avoid alcohol; premature infants or full-term neonates.

Side Effects

Acute dystonic reactions and long-lasting impaired consciousness in child. CNS depression including slight drowsiness to deep sleep, lassitude, dizziness, incoordination. Headache, psychomotor impairment and antimuscarinic effects. Rarely rashes and hypersensitivity reactions, blood disorders, convulsions, sweating, myalgia, extrapyramidal effects, tremor, confusion, tinnitus, hypotension, hair loss.

Pregnancy And Lactation

Category A: Controlled studies in women fail to demonstrate a risk to the fetus in the 1st trimester (and there is no evidence of a risk in later trimesters), and the possibility of fetal harm remains remote.

Precautions And Warnings

May impair ability to drive and operate machinery. Angle-closure galucoma, urinary retention, prostatic hypertrophy or pyloroduodenal obstruction; epilepsy; hepatic impairment. Elderly. Lactation.

Therapeutic Class

Anti-emetic drugs, Sedating Anti-histamine

Storage Conditions

Store at 15-30°C.