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metipranolol

n. A non-selective beta blocker used in eyedrops to treat glaucoma.

Wikipedia
Metipranolol

Metipranolol (OptiPranolol, Betanol, Disorat, Trimepranol) is a non-selective beta blocker used in eye drops to treat glaucoma. It is rapidly metabolized into desacetylmetipranolol.