What's the difference between green 2mg alprazolam bars than the yellow 2mg alprazolam bar's?

If your getting it from the pharmacy then they are the same . 2mg of any Xanax ( generics ) is the same with the colors or shape . BUT… if you are wondering and you are getting it from elsewhere other than the pharmacy . Green bars are easily be fake and the white bars if they are not Y-21 bars it’s probably fake also . There is some GG and G bars that are real if your getting it elsewhere but most common fakes are the green bars and the white ( XANAX ) bars .since those are the brand ( not generic ) bars of 2mg it’s very unlikely that if your getting it somewhere other than the pharmacy it’s fake .

Nothing at all. There is NO difference. These are simply made by two different generic pharmaceutical companies.
They are BOTH, 2 MG of Alprazolam. The only difference is exactly what you pointed out!!! The colors, and that’s bc they’re made by separate companies. Hope this helps you!

The manufacturer.

Green bars: Dava Pharmaceuticals Inc.

Yellows bars: Actavis