Organic tartrate, probably not giving rise to significant systemic load.

(To be edited, initial data ST OCT 04) Brimonidine tartrate, used in eye drops 2mg/mL to decrease the intraocular pressure in glaucoma. Plasma concentrations after 10 days use is very low, in the order of 0,06 µg/mL, but some accumulation can be noted on repeated installations.