Product Information
Registration Status: ActiveSIN15191P
BRIMOCHEK -T EYE DROPS SOLUTION is approved to be sold in Singapore with effective from 2017-03-09. It is marketed by DCH AURIGA SINGAPORE, with the registration number of SIN15191P.
This product contains Brimonidine 2mg/ml, and Timolol 5mg/ml in the form of SOLUTION, STERILE. It is approved for OPHTHALMIC use.
This product is manufactured by Indoco Remedies LTD (Plant II) in INDIA.
It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.
Product Reference
Important Note: For generic product, the SPC/PIL provided may not be brand specific.
{{/items}} {{^items}}Description
Brimonidine is a drug used to treat glaucoma. It acts via decreasing aqueous humor synthesis. A topical gel formulation, marketed under the name Mirvaso, was FDA approved on August 2013 for the treatment of rosacea.
Indication
The ophthalmic solution is indicated for patients with open-angle glaucoma or ocular hypertension to lower intraocular pressure. The topical gel is indicated for the treatment of persistent (nontransient) facial erythema of rosacea in adults 18 years or older.
Mechanism of Action
Brimonidine is an alpha adrenergic receptor agonist (primarily alpha-2). It has a peak ocular hypotensive effect occurring at two hours post-dosing. Fluorophotometric studies in animals and humans suggest that Brimonidine has a dual mechanism of action by reducing aqueous humor production and increasing uveoscleral outflow. The topical gel reduces erythema through direct vasocontriction.
Pharmacokinetics
- Absorption
- Minimal systemic absorption occurs after ocular insertion. When the topical gel was applied to adult patients with facial erythema associated with rosacea, the plasma maximum concentration (Cmax) and area under the concentration-time curve (AUC) were 46 ± 62 pg/mL and 417 ± 264 pg.hr/mL, respectively. These values were reached on Day 15 of treatment.
- Distribution
- Metabolism
- Metabolized primarily by the liver.
- Elimination
Toxicity
Oral LD50 is 50 mg/kg in mice and 100 mg/kg in rats. Common adverse reactions of the topical gel formulation include erythema, flushing, skin burning sensation, and contact dermatitis.
Active Ingredient/Synonyms
5-Bromo-6-(2-imidazolin-2-ylamino)quinoxaline | Brimonidina | Brimonidine | Brimonidinum | Bromoxidine | Brimonidine |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.
Description
A beta-adrenergic antagonist similar in action to propranolol. The levo-isomer is the more active. Timolol has been proposed as an antihypertensive, antiarrhythmic, antiangina, and antiglaucoma agent. It is also used in the treatment of migraine disorders and tremor. [PubChem]
Indication
In its oral form it is used to treat high blood pressure and prevent heart attacks, and occasionally to prevent migraine headaches. In its opthalmic form it is used to treat open-angle and occasionally secondary glaucoma.
Mechanism of Action
Like propranolol and nadolol, timolol competes with adrenergic neurotransmitters such as catecholamines for binding at beta(1)-adrenergic receptors in the heart and vascular smooth muscle and beta(2)-receptors in the bronchial and vascular smooth muscle. Beta(1)-receptor blockade results in a decrease in resting and exercise heart rate and cardiac output, a decrease in both systolic and diastolic blood pressure, and, possibly, a reduction in reflex orthostatic hypotension. Beta(2)-blockade results in an increase in peripheral vascular resistance. The exact mechanism whereby timolol reduces ocular pressure is still not known. The most likely action is by decreasing the secretion of aqueous humor.
Pharmacokinetics
- Absorption
- Bioavailability is about 60%
- Distribution
- Metabolism
- Primarily hepatic (80%) via the cytochrome P450 2D6 isoenzyme.
- Elimination
Toxicity
LD50=1190 mg/kg (oral, mice), LD50=900 mg/kg (oral, rat). Symptoms of overdose include drowsiness, vertigo, headache, and atriventricular block.
Active Ingredient/Synonyms
(S)-1-(tert-butylamino)-3-[(4-morpholin-4-yl-1,2,5-thiadiazol-3-yl)oxy]propan-2-ol | Timolol | Timolol anhydrous | Timololo | Timololum | Timolol |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.