Question about veterinary winstrol

[Crayons]

I noticed some people in the gym use winstrol, except they use one made in a laboratory. It's a 50cc bottle with 200mg of veterinary winstrol. They explained that even though 1cc with have an equivalent of aprox 4mg, since its compound is made for animal it's more potent for humans.

I have 2 questions to ask, since I can't seem to find an answer anywhere else.
First is this calculation and explanation true and is it even recommended to be taken an animal derived anabolic.

Thanks