Phenothiazine - FEE-noe-THYE-a-zeen-derivative antihistamines are using to relieve or prevent the symptoms of hay fever and other types of allergy. They work by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose and watery eyes. Always in some people histamine can close up the bronchial tubes - air passages of the lungs and make breathing difficult.
Some of these antihistamines are also using to prevent motion sickness, nausea, vomiting and dizziness. In addition, some of them may be using to help people go to sleep and control their anxiety before or after surgery.
Phenothiazine-derivative antihistamines may also be using for other conditions as determined by your family doctor.
In the USA these antihistamines are available only with your family doctor's prescription. In Canada some are available without a prescription. However, your family doctor may have special instructions on the proper dose of the drug for your medical condition.
These medication are available in the following dosage forms:
Some commonly using brand names are:
In the USA
In Canada
Another commonly using name for trimeprazine is alimemazine .
Note:For quick reference, the following antihistamines, are numbered to match the corresponding brand names.
This information applies to the following medication: 1. Methdilazine - meth-DILL-a-zeen† 2. Promethazine - proe-METH-a-zeen 3. Trimeprazine - trye-MEP-ra-zeen † Not commercially available in Canada Generic name product may be available in the USA Generic name product may be available in Canada