How to choose the right sheep placenta supplement?

There are a few simple steps for making the right decision on the right health supplement:
1) Grade of health supplement; animal grade, food grade & pharmaceutical grade
2) Percentage or weight of active ingredient per capsule; 250mg,450mg or 3000mg

3) Number of capsules per bottle; 30,60 or 100 capsules

4) GMP, TGA, FDA certified
5) Price relative to the above factors