Headache, fainting or dizziness are the most common indication of overdosage. When these symptoms are observed, treatment should cease for a minimum of 8 hours and then the dosage halved. Simple analgesics such as paracetamol may be helpful for headaches. If headaches are severe and persist, cease administration.
Accidental overdosage of Rectogesic may result in hypotension and reflex tachycardia. Excessive dosage may give rise to methaemoglobinaemia.
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