Companies attributing health claims from using dietary supplements of velvet antler have received warning letters from the US Food and Drug Administration (FDA) concerning the sale of encapsulated powders connected to their marketing claims.[12] The claims were in violation of the United States Food, Drug and Cosmetic Act [21 USC/321 (g)(1)][36] because they "establish the product as a drug intended for use in the cure, mitigation, treatment, or prevention of disease" when velvet antler has no such scientific evaluation. Additionally stated by the FDA, velvet antler was "not generally recognized as safe and effective for the referenced conditions" and therefore must be treated as a "new drug" under Section 21(p) of the Act. New drugs may not be legally marketed in the United States without prior approval of the FDA.[12][14][15][16][17] As of 2018, it is legal to sell velvet antler powder, extract or spray in the U.S. as a dietary supplement as long as no disease treatment claims are made and the label bears the FDA disclaimer: "This product has not been evaluated by the FDA. It is not intended to diagnose, treat, cure or prevent any disease."
Deer antler spray — a supplement commonly used in the fitness and sports industries that has a long history of use in Eastern medicine — is pretty much as strange as it sounds. Derived from the tissue found inside deer antlers, it’s reported to work by providing IGF-1 (insulin-like growth factor), a natural growth hormone found inside the human body that has potential to increase muscle mass and support recovery from injuries.
In rats undergoing left coronary artery ligation, those with heart failure were given either Velvet Antler (Deer) or Captopril as active control for 4 weeks with a third group given water.[17] No significant changes in cardiac structure was noted with either Velvet Antlers or Captopril (with the heart tissue being enlarged after heart failure) although left ventricular ejection fraction (LVEF) and fractional shortening (LVFS) appeared to be improved in both treatment groups to approximately the same degree and the increase in serum Brain Natiuretic Peptide (BNP) that occurred with heart failure was attenuated the same degree in both interventions.[17]
IGF-1 can help slow this aging process down by increasing the telomere length of our DNA. Telomeres are a protective "cap" at the end of each strand of our DNA which prevents the DNA from becoming damaged. DNA becomes damaged as the telomeres grow shorter with age. As more DNA strands become damaged, cells in our bodies can no longer function properly which results in many medical conditions, diseases, and even death. This is how IGF-1 can help longevity. It does this by promoting healthy DNA strands to keep our cellular functions optimal.

I took red mountain deer velvet and it really messed my stomach up. I now have cramps and bloating all the time plus it feels like my stomach shrank…I can’t eat like I used to. It was a big mistake to take that stuff. Do you know of any way I can get my stomach back to normal??? Can you recommend someone who knows a lot about deer velvet?? I have been suffering terribly since I took that junk…it’s been about 2 years now!!!! My stomach has never been the same since I took that poison!!