One double-blind and one preliminary study have found that brovincamine, a compound closely related to periwinkle's active constituent vinpocetine, was helpful in people with chronic glaucoma. Until studies have been conducted using actual vinpocetine, it is unknown whether it would be as effective as brovincamine.
Supplementing with melatonin lowered intraocular pressure of healthy people in one study.
Studies show, supplementing with magnesium improved vision in people with glaucoma, apparently by enhancing blood flow to the eyes.
Inuit people, who eat large amounts of omega-3 fatty acids, appear to have a much lower incidence of glaucoma than do Caucasians. One study found that cod liver oil (a rich source of omega-3 fatty acids) reduced intraocular pressure in animals.
60 mg twice a day. In a preliminary trial, supplementing with anthocyanins (flavonoids found in bilberry) improved symptoms in people with normal-tension glaucoma.
Alpha lipoic acid may improve visual function in people with some types of glaucoma.
Studies have shown that intraocular pressure may be lowered by directly applying a sterile fluid extract of forskolin, a constituent of the Ayurvedic herb Coleus forskohlii.
At least 2 grams daily. Supplementing with vitamin C may help reduce intraocular pressure.
120 mg daily of a standardized herbal extract. In cases of normal tension glaucoma; ginkgo may help improve vision.
In a preliminary study, supplementation with a product that provided Pycnogenol (a maritime pine bark extract) and a standardized bilberry extract significantly decreased intraocular pressure in people who had elevated intraocular pressure.