Key takeaways
Bimatoprost (Lumigan) and latanoprost (Xalatan) are both prostaglandin eye drops used to lower eye pressure in conditions like open-angle glaucoma and ocular hypertension. They work by helping fluid drain from the eyes. Both medications are used once daily in the evening. However, there are some differences between them. Bimatoprost is available in both brand-name and generic forms, while latanoprost is also available as a brand-name and generic medication. Bimatoprost can cause more eye redness, while latanoprost might cause a feeling of something in the eye. Bimatoprost is stored at room temperature, but unopened bottles of latanoprost need to be refrigerated and can be kept at room temperature for up to 6 weeks once opened. Both medications can darken the color of your eyes and eyelashes over time. You should remove soft contact lenses before using either medication, as they contain a preservative that can damage the lenses.
