real pharma grade tabs are the best. but like wolfie said, they are faked alot, so that is a huge problem
Also liquids are legal for your rats of course and alot easier to find
If you find a good goto research place, that you can trust.Its a very good way to go.Problem with rc's, like nelson said is the quality is random per batch.Why its very important to find a good place and stick with them
agguys has always done that for me .