How old do I have to be to use Cove? August 06, 2019 16:50 Updated Follow You must be 18 or older to use Cove. If you are 18 or older, you can get started with Cove here. Related articles Can I use insurance to pay for Cove? Can I use my own pharmacy? Am I eligible to use Cove? How does Cove work? Is telemedicine legal?