Complete dosing information for PROMETHAZINE HCI
Medical guidance required: Dosing information here is for educational purposes. Your healthcare provider will determine the appropriate dose based on your specific condition, kidney function, other medications, and medical history. Never adjust your dose without consulting your doctor or pharmacist.
Dosage and Administration Important Notes on Administration Promethazine hydrochloride injection can cause severe chemical irritation and damage to tissues regardless of the route of administration. Irritation and damage can result from perivascular extravasation, unintentional intra-arterial injection, and intraneuronal or perineuronal infiltration (see Warnings - Severe Tissue Injury, Including Gangrene). The preferred parenteral route of administration for promethazine hydrochloride injection is by deep intramuscular injection. Under no circumstances should promethazine hydrochloride injection be given by intra-arterial injection due to the likelihood of severe arteriospasm and the possibility of resultant gangrene (see Warnings - Severe Tissue Injury, Including Gangrene). Subcutaneous injection is contraindicated as it may result in tissue necrosis. When administered intravenously, promethazine hydrochloride injection should be given in a concentration no greater than 25 mg per mL