Are Pregabalin 300mg Capsules prescribed for you or not? Pregabalin is a painkiller medicine for pain related to nerve pain. It’s a capsule form and a 300mg dose. Yes, you can take Pregabalin 300mg for the nerve pain. When no painkiller works on your pain, you can order it. Buyzopi.com is offering Pregabalin 300mg Capsules at a reasonable price, with a next-day delivery option via Royal Mail service.