The present invention relates to a device for storing and dispensing pharmaceutical liquid, such as ophthalmic liquid. More particularly, the ophthalmic liquid comprises, as active principle, at least one prostaglandin, at least one analogue of a prostaglandin or at least one protein, especially for the treatment of glaucoma. The device according to the invention comprises, on at least one part of an inner surface of the device, a coating that reduces the sorption of liquid on the coated surface, this coating being hydrophilic.