FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
PREPARATIONS: Tablets: 12.5, 25, and 50 mg; Suppositories: 12.5, 25, and 50 mg; Syrup: 6.25 mg/5 ml; Injection: 25 and 50 mg/ml.
Promethazine should not be used with propylthiouracil (PTU) due to the increased risk of low white blood cell counts and increased risk of infections. The reason for this interaction is not known.
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