Blood meal is the purest natural form of amino acids but there is a more pure form. You can get it at any vet supply store where they sell supplies for treatment of large animals. Growing up in the livestock industry, I am very familiar with this product and I used it myself. You can buy it but the quart or gallon and is used to help speed up the recovery of sick animals. It can be administered orally, sub Q, IM, or IV. I have used it on animals and I have taken it myself. When I was younger and lifting weights, I would take a table spoon full before and after working out. It caused extreme muscle gain and actually is more effective than any of those body building shakes that you can buy at a health food store. The only draw back is that it absolutely tastes like shit but it costs $3 for a quart.
I have never used blood meal but I have used something similar. To speed up recovery times of show horses after an event, I used to feed them fish meal. Fish meal can be bought at most large animal feed dealers. Fish meal is high in omega fatty acids and also seemed to help activate a horse's brain and they seemed to learn faster. Fish meal smells and tastes just like fish as it should. For those that make thier own channel cat bait, it makes a great additive. I have also mixed it with water and injected it into plastic worms and creature baits. As the lure is pulled through the water, it releases the scent. On some bodies of water, it seemed to work really well but it did not seem to work so well in rivers and creeks. I don't know why that was but that was the result.
It is just called Amino Acid, several different companies make it. It is a yellow liquid. If you are working out and want it to help gain muscle, it works great. Do not take it if you are not working out because it will cause you to gain fat, you have to be working out and need to have been working out for at least 2 weeks prior to taking it so that it can be utilized by the muscle properly. Take a table spoon before you work out and another after. I warn you, it tastes like shit and mixing it with juice or pop does not hide the taste, it still tastes like shit. You will gain a lot of muscle using it though.
there are meat based proteins and whey based proteins........but some researchers worked with meat based amino acids......really caused trout to bite......triggered a response in smell ...so im off to get some blood meal and see whats up........tw