Promethazine Hydrochloride (HCL) is an antihistamine and sedative medication that is used to treat a variety of conditions, including allergies, motion sickness, and nausea and vomiting. It works by blocking the action of histamine, a chemical that is involved in the body’s immune and digestive systems, and by affecting certain brain receptors that are involved in the regulation of nausea and vomiting.
Promethazine HCL can effectively reduce symptoms of allergies such as runny nose, sneezing, and itching.
It can also be used to prevent and treat motion sickness.
Promethazine HCL can also be used to treat nausea and vomiting caused by certain medical conditions and medications.
It can also be used as a sedative to help people fall asleep and to reduce anxiety.
Promethazine HCL can cause a range of side effects, including drowsiness, dizziness, and difficulty concentrating.
It can also cause dry mouth, blurred vision, and changes in blood pressure and heart rate.
Promethazine HCL can also cause changes in mood, such as depression or confusion.
Long-term use of promethazine HCL can cause cognitive impairment, particularly in older adults.
Overdose of promethazine HCL can lead to serious health problems, such as respiratory depression and coma.