Is it OK to take pill G 3742 one day and b 555 779 the next. They are both medroxyprogesterone acetate. I know they're from manufacturers but aren't they the same thing? So is it OK if I take one pill one day and the other the next day?

Did your doctor prescribe both of these pills? If so, did he/she give you instructions on their use, and using them together?

Your doctor really is the person you should be asking. We don't know your medical history. We don't know what these pills do, or what they're supposed to be curing/preventing/maintaining.

Your doctor has your medical history, and he/she is the only one that should be answering this question.

There is only one difference between G 3742 and b 555 779 is that they have different ingredients, but other than that, they're pretty much they same thing so to answer you, yes, you can and of course never take these when your pregnant.

Here's some info on the ingredients;

B 555 779

Crospovidone
Lactose monohydrate
Magnesium stearate
Methylcellulose (15 mPa.s)
Corn starch
Sodium lauryl sulfate

G 3742

Calcium stearate
Corn starch
Lactose
Mineral oil
Sorbic acid
Sucrose
Magnesium silicate