Answer
Reported gastrointestinal side effects of promazine hydrochloride include gastrointestinal disturbances, dry mouth and constipation, with nausea and vomiting also reported as withdrawal symptoms.
Sources for this answer
- Promazine Hydrochloride 25mg/5ml Oral SyrupRosemont Pharmaceuticals Limited · emc · SmPC §4.8 Undesirable effects · Version 12Document updated
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