Phenergan (Promethazine) is essentially an antiemetic and antihistamine drug that is used for treating extreme allergic conditions such as runny nose, sneezing, itchy skin, rashes, watery or itchy eyes and hives. Phenergan (Promethazine) is also a popular drug for motion sickness and helps in treating vomiting, nausea as well as pain that occurs after undergoing a surgery. Phernegan is also a popular drug for insomnia.

Phenergan (Promethazine) is available only on doctors prescription in United States but could be purchased as an over counter drug in most of the countries across the world. Being antihistamine is helps in blocking naturally occurring H1 histamine receptors in human body without actually blocking the histamine secretion. Histamine receptors called irritation and hence by curbing them allergies could be treated. Promethazine also has anti cholinergic, antiemetic, anti motion sickness and sedative effects. Phenergan (Promethazine) can be used for treating both adults and children. However this drug for allergy is not recommended for children below 2 years of age as it may cause fatal respiratory depression.

Usually one pill of 25 mg potency is prescribed by the doctor to be taken at the bed time but depending on the severity of the problem 12.5 mg tablets could be prescribed during the day. This medicine could be taken with or without food. Phenergan (Promethazine) doses could affect your thinking and can induce drowsiness, hence greater care should be taken while driving or engaging in activities that require high attention after taking this anti allergic drug. Phenergan is approved by FDA.

Phenergan (Promethazine) should only be taken on doctor’s prescription. Only the prescribed doses for the specified time duration should be taken as overdose can lead to serious side effects. Promethazine is available in the form of 12.5 mg or 25 mg pills and also in form of liquid concentrates. Usually a single dose of 25 mg is to be taken by adults at the bed time but doses may vary depending on the severity of the problem and also the age of the patient. This antihistamine medicine can be taken on empty stomach. Phenergan (Promethazine) is not recommended for children below 2 years of age.

Some of the common side effects observed after taking this anti allergic drug includes dizziness, drowsiness, disorientation, confusion, swelling in different body parts, blurred vision, dryness in mouth and stuffy nose. In extreme cases patients of this antihistamine medication could also experience difficulty in breathing, faint, hallucinate, grow anxious and can experience a slow heart beat. In case of any side effects immediately consult your physician.

Phenergan (Promethazine) usage may increase or intensify the impact of other sedatives or anti depressants that affect our central nervous system. Phenergan (Promethazine) should not be used along with alcohol, tranquilizers, sedatives and anti depressants. Epinephrine a drug for treating hypotension could also interact negatively with Phenergan (Promethazine) as it reverses its vasopresser effect. As in some cases use of promethazine can increase blood sugar levels hence diabetics should only take this anti allergic drug after consulting their doctor.

Some of the popular uses of Phenergan (Promethazine) antihistamine drug include:
• Used for treating seasonal or perennial allergies
• Motion sickness
• As antiemetic drug for postoperative care
• Allergies of eyes like conjunctivitis, food allergies and skin rashes
• Prevent nausea , vomiting and pain happening due to anesthesia or surgery.

Phenergan (Promethazine) should be stored in a light resistant airtight container at room temperature of 20-25 degree centigrade. The medicine should be kept away from pets and children. Liquid syrups could be stored in refrigerators.

Phenergan (Promethazine) should always be taken on doctors prescription and following precautions should be taken while on this anti allergic drug:
• Allergic to phenothiazine or any component of phenergan
• Have a medical record of high blood pressure, seizures, kidney or liver disease
• Suffer from asthma or any other breathing problem, sleep apnea or stomach ulcer
• Have prostrate problems and have calcium deficiency.