The appropriate dose of deer velvet depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for deer velvet. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.
There is some evidence that deer antler spray may work for improving performance and physique. However, it seems that an individual needs to take very high doses in order for these benefits to occur. In studies where the supplement was effective, injections of very concentrated extracts were used. Injections may be the most effective, and likely the only, way that deer antler works. This is because IGF-1 is mostly destroyed when it passes through the digestive system. Because of this, swallowing deer antler supplements would practically be useless.
In a double blind study (Edelman, 2000), 54 patients with arthritis in the knee were given deer antler velvet or a placebo and assessed at 1, 3 and 6 months. Patients treated with deer antler velvet showed improvement in pain and physical global assessment at 3 and 6 months. No significant improvement was observed for the placebo group for any of the parameters examined.
One double-blind study published in the International Journal of Sports Nutrition and Exercise Metabolism tested whether or not deer antler velvet powder or extract had an impact on aerobic performance, endurance and “trainability of muscular strength” compared to a placebo. The subjects were adult males. They were given either a placebo, or deer antler extract or powder supplementation over a  10-week period while undergoing a strength-building routine. The men were measured for muscular strength, endurance, and VO2max before and after using deer antler. These results were determined by measuring circulating levels of testosterone, insulin-like growth factor, erythropoietin, red cell mass, plasma volume, and total blood volume.
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!!