What is this drug used for? October 17, 2019 01:32 It is used to help eyelashes grow. It may take 2 months to see the full effect. It is used to treat glaucoma. It is used to lower high eye pressure. Related articles What are some things I need to know or do while I take this drug? What is the difference between Acyclovir and Valacyclovir? Can I use Latisse on my eyebrows? What are some side effects that I need to call my doctor about right away? What do I need to tell my doctor BEFORE I take this drug?