When I ordered, I was afraid that, like many reviews, the cyano formula would come (regular B12), and it was methyl (methyl-B12) that was very important to me, because ordinary cyanide is not absorbed in the body (thanks to genetics). It was methylcobalamin that came, packed perfectly, the form is convenient (does not require drinking water, the tablets are tiny, you can just chew or dissolve), the delivery was very fast, I'm happy!See full review