All groups experienced a significant improvement in strength. But the deer antler powder group showed the greatest increase in isokinetic knee extensor strength and endurance. However, it’s possible that this was due to exercise program rather than using the deer antler powder. None of the men in any group showed evidence of endocrine, red cell mass or VO2max changes. Therefore, researchers concluded that the “findings do not support an erythropoetic or aerobic ergogenic effect of deer antler velvet.” (12) On the other hand, this was a small study, with only 12-13 men in each group. This means that further testing is needed to confirm the validity of the results.
In September, 2013, the headquarters of S.W.A.T.S. was raided and ordered to be shut down by Alabama's attorney general citing "numerous serious and willful violations of Alabama’s deceptive trade practices act". Among the violations were "claims that the company made about a number of products that were unsupported by scientific research. Some of these products were marketed as 'dietary supplements.'"  The assistant Alabama attorney general "says that Deer Antler Spray is dangerous and its sellers are law-breakers." 
Deer antler products contain mostly amino acids (that form proteins) along with growth factors, which are poly-peptide bonded amino acid chains. (4) The most abundant growth factor is IGF-1. However, it isn’t a factor found in these products. Depending on the specific brand, deer antler spray/powder/capsules may contain amino acids and growth factors including: (5)
People with osteoarthritis take chondroitin sulphate as an anti-inflammatory and velvet antler contains a high concentration of this compound, as well as significant amounts of glucosamine sulphate. Both appear to inhibit the depletion of bone and cartilage. The use of velvet antler in treating rheumatoid arthritis is being studied at the University of Calgary and the University of Alberta.
I still coach baseball, and I have a son who is in college and is looking forward to the MLB if it is in the cards for him, it is, but he needs this college for the maturing process. This led me to making that first purchase of Deer Antler Spray. I am not on those awful doctor narcotics anymore, and my left side pain is gone totally! I wish that I could send a picture of my side because the swelling is there, not as much as it used to be though, and absolutely no pain! I have the ‘skinny complex’, and when I started this program I was 6′ 1″ and 137.5 pounds. My mean (average weight) is 175. I am back up to 165 being as we just received our second order recently; it doesn’t take long for my 1,000 mph metabolism to slow down due to this Antler Spray.
L-Arginine: An amino acid usually found in red meats that is important for the body’s ability to manufacture proteins. L-Arginine has been used to treat conditions like high blood pressure, congestive heart failure, blocked arteries, and erectile dysfunction. L-Arginine is safe for most people, however it should not be taken by women that are pregnant or breastfeeding.