Alamast

Alamast Uses, Dosage, Side Effects, Food Interaction and all others data.

Alamast binds to the histamine H1 receptor. This blocks the action of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine. Alamast has also been observed to inhibit antigen-stimulated calcium ion influx into mast cells through the blockage of calcium channels. Alamast inhibits the chemotaxis of eosinophils into ocular tissue, and prevents inflammatory mediator release from human eosinophils.

Alamast is used for the prophylactic treatment of itching of the eye associated with allergic conjunctivitis. Alamast potassium is a mast cell stabilizer that inhibits the in vivo Type I immediate hypersensitivity reaction. Alamast inhibits the antigen-induced release of inflammatory mediators (e.g., histamine, leukotriene C4, D4, E4) from human mast cells. Allergic reactions lead to cell-degranulation and the release of histamine (and other chemical mediators) from the mast cell or basophil. Once released, histamine can react with local or widespread tissues through histamine receptors. Histamine, acting on H1-receptors, produces pruritis and vasodilatation (allowing blood fluids to enter the area to cause swelling). Alamast is a histamine H1 antagonist. It competes with histamine for the normal H1-receptor sites on effector cells of blood vessels to provide effective, temporary relief of watery and itchy eyes.

Trade Name Alamast
Generic Pemirolast
Pemirolast Other Names Pemirolast, Pemirolastum
Type Ophthalmic
Formula C10H8N6O
Weight Average: 228.2101
Monoisotopic: 228.075958908
Groups Approved, Investigational
Therapeutic Class Ophthalmic Non-Steroid drugs
Manufacturer
Available Country United States
Last Updated: September 19, 2023 at 7:00 am
Alamast
Alamast

Uses

Alamast ophthalmic solution is used for the prevention of itching of the eye due to allergic conjunctivitis.

Alamast is also used to associated treatment for these conditions: Conjunctivitis allergic, Seasonal Allergic Conjunctivitis

How Alamast works

Alamast binds to the histamine H1 receptor. This blocks the action of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine. Alamast has also been observed to inhibit antigen-stimulated calcium ion influx into mast cells through the blockage of calcium channels. Alamast inhibits the chemotaxis of eosinophils into ocular tissue, and prevents inflammatory mediator release from human eosinophils.

Dosage

Alamast dosage

Adult: 1 to 2 drops in each affected eye four times daily.

Pediatric Use: Safety and effectiveness in pediatric patients below the age of 3 years have not been established.

Side Effects

Burning of eye, dry eye, ocular discomfort, non ocular allergy, sinusitis, headache and sneezing or nasal congestion.

Precaution

To prevent contaminating the dropper tip and solution, do not touch the eyelids or surrounding areas with the dropper tip. Keep the bottle tightly closed when not in use Patients should be advised not to wear contact lens if their eye is red Alamast should not be used to treat contact lens related irritation Patients should wait 10 minutes after applying Alamast before they insert contact lenses

Food Interaction

No interactions found.

Half Life

4.5 hours (Ophthalmic)

Elimination Route

Following topical administration, about 10-15% of the dose was excreted unchanged in the urine.

Pregnancy & Breastfeeding use

Pregnancy: There are no adequate and well-controlled studies in pregnant women. Alamast ophthalmic solution should be used during pregnancy only if the benefit outweighs the risk.

Lactation: It is not known whether Alamast Potassium is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Alamast ophthalmic solution is administered to a nursing woman.

Contraindication

Alamast ophthalmic solution is contraindicated in patients with previously demonstrated hypersensitivity to any of the ingredients of this product.

Storage Condition

Store at 15-25° C. Keep out of reach of children. Do not use more than 4 weeks after opening

Innovators Monograph

You find simplified version here Alamast

*** Taking medicines without doctor's advice can cause long-term problems.
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