Indications And Dose
Symptomatic relief of allergy such as hay fever, urticaria ▶BY MOUTH ▶Adult: 1 mg twice daily, increased if necessary up to 6 mg daily
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Drug reference
Symptomatic relief of allergy such as hay fever, urticaria ▶BY MOUTH ▶Adult: 1 mg twice daily, increased if necessary up to 6 mg daily
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Avoid in Acute porphyrias p. 1120
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Elderly. epilepsy. prostatic hypertrophy. pyloroduodenal obstruction. stenosing peptic ulcer. susceptibility to angle-closure glaucoma. urinary retention
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→Appendix 1: antihistamines, sedating
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▶Common or very common Asthenia. sedation ▶Uncommon Dizziness ▶Rare or very rare Abdominal pain. agitation. constipation . dry mouth. dyspnoea. headache. nausea. palpitations. rash. tachycardia
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Most manufacturers of antihistamines advise avoiding their use during pregnancy; however, there is no evidence of teratogenicity. Use in the latter part of the third trimester may cause adverse effects in neonates such as irritability, paradoxical excitability, and tremor.
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Most antihistamines are present in breast milk in varying amounts; although not known to be harmful, most manufacturers advise avoiding their use in mothers who are breast-feeding.
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There can be variation in the licensing of different medicines containing the same drug. Tablet CAUTIONARY AND ADVISORY LABELS 2 ▶Tavegil (GlaxoSmithKline Consumer Healthcare) Clemastine (as Clemastine hydrogen fumarate) 1 mg Tavegil 1mg tablets | 60 tablet p £7.33 DT = £7.33
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Driving and skilled tasks Drowsiness may affect performance of skilled tasks (e.g. driving); sedating effects enhanced by alcohol.
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1 mg twice daily, increased if necessary up to
First-line fragment. Read the complete Indications and Dose section above.
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