Poly MVA 236 ml Liquid

Is product for human consumption or animals. I am a bit confused while looking at the reviews

When I purchased this product a few weeks ago, it was $177.77 per 8 oz. bottle. It's jumped up to 195. Why?

Does it need to be kept in a cool back while shipping?

The back of the bottle indicates some substances may lessen or enhance the effect of poly-mva. which ones? the phone # only had promos, no info.