I recently bought a batch of 100 little blue 50 mg tabs. I don't know, I'm not all that impressed. I should spent the money on Zambons. They're fast acting and I know they work well. Let's say these IP's really are 50mg's a pill. Well, after you swallow and digest them you're luck to absorb 25mg's at best. Yeah, if had to do it over again I would have just bought the Zambon vials and paid more $$$. Sometimes you get what you pay for.