You can bolous dose. Depending on the which country. It might be prescription only. I take 20,000 IU once a week, 1000 iu everyday. I have bought prescribed 60,

You can bolous dose. Depending on the which country. It might be prescription only. I take 20,000 IU once a week, 1000 iu everyday. I have bought prescribed 60,000 IU in the past.