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Indication & Dosage |
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| Oral |
| PREGNANCY-ASSOCIATED NAUSEA AND VOMITING |
| Adult:
2 tab at bedtime. In severe cases or in cases with nausea/vomiting during the day: increase dosage by 1 tab in morning and/or afternoon. |
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| Precautions |
May impair ability to drive and operate machinery. Angle-closure glaucoma, urinary retention, prostatic hypertrophy or pyloroduodenal obstruction; epilepsy; hepatic impairment, elderly. Lactation. |
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| Adverse Drug Reactions |
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. Severe peripheral neuropathies with long-term admin of large doses of pyridoxine. |
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| Interactions |
Doxylamine enhances effects of CNS depressants eg alcohol, barbiturates, hypnotics, opioid analgesics, anxiolytic sedatives and antipsychotics. Atropine, tricyclic antidepressants (TCAs), MAOIs. It can mask signs of ototoxicity caused by aminoglycosides. INH, penicillamine and OC require greater pyridoxine dose. Pyridoxine reduces the effects of levodopa, phenobarb and phenytoin. |
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