Caffeine, L-Theanine, and IOP: Navigating Popular Supplements in Glaucoma
Caffeine, L-Theanine, and IOP in Glaucoma Glaucoma patients often wonder whether common stimulants or supplements might affect their eye pressure (intraocular pressure, IOP). Caffeine – a central nervous system stimulant found in coffee, tea and energy drinks – can transiently raise blood pressure and may influence IOP. By contrast, L-theanine (an amino acid abundant in green tea) is known for c...