There is a source in Mexico that sells (among other things) winny tabs at 25 mgs each, d-bol/winny tabs at 25 mg/25 mg each and generic viagra at 100 mg each. I'm not sure what their source is for these meds but they all have the same circular shape and size and they have the same style printing on the side.
I've never tried the d-bol/winny combo but I bulked up very nicely on the winny. On the other hand, I've also tried the generic viagra and found that effect from that seems to be quite variable. It is also not nearly as strong as 100mg of real viagra.