Promethazide (Phenergan)

Promethazide (Phenergan)

Description

Promethazide (Phenergan) is an antihistamine that relieves nasal stuffiness and inflammation and red, inflamed eyes caused by hay fever and other allergies. It is also regularly used to treat itching, swelling, and redness from hives and other rashes; allergic reactions to blood transfusions and severe allergic reaction.
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Promethazide (Phenergan) 25 mg
Brand name: Phenergan
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60 Tabs $0.22 $13.20 $12.00  
120 Tabs $0.21 $25.20 $22.80  
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Promethazide (Phenergan) tablets and elixir contain the active ingredient promethazine, which is a type of medicine called a sedating antihistamine. It works by preventing the actions of histamine. Promethazide (Phenergan) is also used as a sedative and sleep aid for both children and adults, and is prescribed to prevent and control nausea and vomiting before and after surgery and to prevent and treat motion sickness. It is also regularly used, with other medications, for pain after surgery.

Antihistamines work by decreasing the effects of histamine, a chemical substance the body releases in response to certain irritants. Histamine narrows air passages in the lungs and contributes to inflammation. Antihistamines reduce itching and swelling and dry up secretions from the nose, eyes, and throat.
Histamine is a substance produced by the body as part of its defence mechanisms. It causes the symptoms of allergic reactions. These can include inflammation of the airways or skin, nasal congestion, narrowing of the airways, rashes, and itching of the skin, eyes or nose. Promethazine blocks histamine from binding to its receptors in various parts of the body and this stops it causing the symptoms of an allergic reaction.

Histamine may be released from and act in a small (localised) area of the body such as the nose. Alternatively, histamine can cause more serious, sometimes life-threatening reactions such as anaphylaxis. Promethazine is used for treating localised allergies such as hay fever and nettle rash, as well more serious allergic reactions such as anaphylaxis.

Most important fact about Promethazine hydrochloride

Phenergan may cause considerable drowsiness. You should not drive or operate dangerous machinery or participate in any hazardous activity that requires full mental alertness until you know how you react to Phenergan. Children should be carefully supervised while they are bike-riding, roller-skating, or playing until the drug's effect on them is established.

How should you take Promethazine hydrochloride?

Take Phenergan exactly as prescribed.

If you are taking Phenergan on a regular schedule, take the forgotten dose as soon as you remember. If it is time for your next dose, skip the one you missed and go back to your regular schedule. Never take 2 doses at once.

Storage instructions
Tablets should be stored at room temperature, away from light. Suppositories should be stored in the refrigerator, in a tightly closed container.

What side effects may occur?


Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can urgently determine if it is absolutely safe for you to continue taking Phenergan.

Side effects may include :

Blurred vision, dizziness, drowsiness, well dry mouth, increased or decreased blood pressure, nausea, rash, sedation, vomiting

Why should Promethazine hydrochloride not be prescribed?


Do not take Phenergan if you have ever had an allergic reaction to it or to related medications. Phenergan is not for use in comatose patients, and should not be used to treat asthma or other breathing problems.