Generic Allegra and its Uses
Allegra is an antihistamine. Generic Allegra reduces allergy symptoms of hay fever (seasonal allergic rhinitis), and may reduced itching of the skin in those people with chronic itchy skin rashes and other allergic symptoms.
Generic Allegra is called a non-sedating anti-histamine as it does not enter the brain in significant quantities and is therefore unlikely to cause drowsiness.
Working Mechanism of Generic Allegra
Histamine is a chemical produced by the body. It is stored in cells (mast cells) in almost all tissues of the body. When the body reacts to a foreign substance (an allergen e.g. flower pollen), the mast cells release their stores of histamine.
Histamine may then bind to receptors (H-1 receptors) in many areas of the body causing an increased blood flow to the area of the allergy and the release of other chemicals that add to the allergic response. This stimulates the symptoms of an allergic reaction such as inflammation of the skin, airways or tissues, rashes, itching of the skin, eyes or nose, nasal congestion or narrowing of the airways.
Generic Allegra acts by blocking the binding of histamine to receptors in the body. It does not prevent the actual release of histamine from mast cells. By blocking the binding of histamine, the release of other chemicals and increased blood supply to the area is prevented or decreased. This results in prevention or relief of the typical symptoms of an allergic reaction.
Histamine may be released from and act in a small (localized) area of the body e.g. the nose. Alternatively, histamine can result in a serious or complete body reaction e.g. anaphylactic reaction. Allegra , Fexofenadine (180 mg) is only useful for the prevention or relief of localized or less serious allergies such as an itchy rash (rather than very serious allergic reactions).
Allegra Dose
Missed Dose of Generic Allegra
Take the missed dose of Allegra as soon as you remember. However, if it is almost time for the next dose, skip the missed dose of Allegra and take only the next regularly scheduled dose. Do not take a double dose of Allegra .
Overdose or Excess Dose of Generic Allegra
Allegra in excess dose does not show any symptoms.
Conditions for Storage of Generic Allegra
Store Allegra at room temperature away from moisture and heat.
Potencies of Generic Allegra
Allegra Tablets : Allegra 120 mg & Allegra 180 mg
Food and Drug Interactions with Allegra
- The blood levels of Allegra may be increased by:
- Erythromycin
- Ketoconazole
- However, the increase in the blood levels of Allegra does not normally result in increased side effects.
- Antacids may decrease the absorption of Allegra from the gut.
Contraindications withGeneric Allegra
Allegra is contraindicated in the following:
- Breastfeeding
- Children under 12 years of age
- Pregnancy
- Allergy to one or any of its ingredients
Precautions with Generic Allegra
Allegra should be used with caution in:
- Decreased kidney function
- Decreased liver function
- Elderly people
Adverse Effects with Generic Allegra
The adverse effects associated with Allegra are:
- Headache
- Drowsiness
- Nausea
- Fatigue
- Dizziness
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