OMNI™ by OSRX®   Tim + Brim + Dor   
Dosing q.a.m. This is the AM arm of the "Triple/Quad, AM - PM pairing".
It is intended for use in unison with the quad "PM combination"1.
Chem Specs timolol 0.5%,  brimonidine 0.15%,   dorzolamide 2.0%,
Quantities 3.5ml,
Cost 55.00
Class timolol:           Non-selective beta-adrenergic receptor blocker.
brimonidine:   Relatively selective alpha-2 agonist.
dorzolamide:   Carbonic anhydrase inhibitor
Usage Easier to use and more cost effective than single-medication alternatives.
Contraindications
timolol

Bronchial asthma, a history of bronchial asthma, COPD, sinus bradycardia,
second or third degree atrioventricular block, overt cardiac failure, cardiogenic shock.
Numerous additional cautions listed here.

brimonidine

neonates and infants (under the age of 2 years)
Vascular insufficiency cautions listed here.

dorzolamide

Sulfonamide hypersensitivity.
Pediatric use Safety and effectiveness in pediatric patients have not been established.
Pregnancy Category C. Teratogenicity shown in rabbits at 37x the human dose but not at 16x.
1. Pairs with the "PM combination" which adds latanaprost for daily dosing.
0.001% BAK
Individual drugs are FDA approved but the combination is not.
    N.L.M. DailyMed page for Trusopt          PDR page for Trusopt