Glycerin 5.6g; per 5.5mL. <6yrs: use Pedia-Lax Liquid Glycerin Supps. ≥6yrs: 1 supp rectally daily. Results usually within 15–60min; reevaluate if ineffective.

Promethazine concentration was determined by high-performance liquid chromatography ... hydrochloride after administration of rectal suppositories at three dosage strengths and oral syrup to ...