USES: Promethazine injection is used to treat nausea and vomiting related to certain conditions (e.g., after surgery, motion sickness). It is also used with other medication to treat life-threatening allergic symptoms (anaphylaxis) and reactions to blood products. The injectable form may be used to treat milder allergic reactions when you cannot take another medication by mouth. It may also be used before/after surgery, other procedures, or labor and delivery to help you feel calmer, to prevent nausea/vomiting, and to help certain narcotic pain relievers (e.g., meperidine) work better.Promethazine is an antihistamine (phenothiazine type). It works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Its other effects (e.g., anti-nausea, calming, pain relief) may work by affecting other natural substances (e.g., acetylcholine) and by acting directly on certain parts of the brain.This medication should not be used in children younger than 2 years.
HOW TO USE: See also Warning section.It is best to inject this medication deep into a muscle. It may also be injected slowly into a large vein (not in the hand or wrist) by a health care professional. Do not inject this medication under the skin or into an artery. If you have any questions about the proper use of this medication, ask your doctor or pharmacist.Your dosage and how often you receive the medication will be determined by your weight, age, condition, and response to therapy. Injections may be repeated if needed, usually every 4 hours.If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely.Inform your doctor if your condition does not improve or if it worsens.
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