Perque Life Guard is a safe brand. It is only available through physicians. You can call them to find out who carries them in your area. If you cannot find anyone, call my office at 281-240-2229 and we can ship them to you. I also carry methylcobalamin sublinqual tabs, and a liquid emulsified vitamin D. Much of what I carry, I have had to manufacture myself to ensure GF status.
Hope that helps you.
All the best,