High Quality BP/EP Pharmaceutical Raw Material Brimonidine Tartrate CAS 70359-46-5

Brimonidine Tartrate More Info

Brimonidine tartrate is an alpha-2 adrenergic agonist used primarily in the treatment of glaucoma and ocular hypertension. It is also used to treat facial redness associated with rosacea. Brimonidine works by reducing aqueous humor production and increasing uveoscleral outflow, thereby lowering intraocular pressure.

Mechanism of Action

Brimonidine acts as an agonist of alpha-2 adrenergic receptors in the eye. This action decreases the production of aqueous humor in the ciliary body and increases uveoscleral outflow, leading to a reduction in intraocular pressure. In the skin, brimonidine reduces facial erythema by constricting blood vessels.

Applications

Brimonidine tartrate is used for:
Glaucoma and Ocular Hypertension: It is used to lower intraocular pressure in patients with open-angle glaucoma or ocular hypertension.
Facial Redness in Rosacea: Brimonidine is used topically to reduce persistent facial erythema associated with rosacea.

Safety and Side Effects

Brimonidine can cause several side effects:
Common Side Effects (Ophthalmic Use):
Dry mouth
Blurred vision
Eye irritation
Headache
Drowsiness
Common Side Effects (Topical Use for Rosacea):
Redness or flushing (rebound effect)
Burning sensation
Pruritus (itching)
Contact dermatitis
Less Common but Serious Side Effects:
Allergic reactions (rare)
Hypotension (low blood pressure)
Bradycardia (slow heart rate)
Serious side effects require immediate medical attention.

Routes of Administration

Brimonidine tartrate is administered as eye drops for glaucoma and as a topical gel for facial redness associated with rosacea.

Pharmacokinetics

Absorption: When used as eye drops, brimonidine is absorbed systemically, with peak plasma concentrations reached within 1-4 hours.
Distribution: It has a moderate volume of distribution, indicating distribution into tissues.
Metabolism: Brimonidine is metabolized by the liver.
Elimination: The half-life of brimonidine is approximately 2-3 hours. It is primarily excreted via urine.

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