Deer Antler Velvet Extract: This moss-like substance has been used in Chinese medicine for years and is thought to contain a number of compounds that can help with tissue regeneration and repair. The antlers are removed safely and without harm to the animal, and the velvet is thought to have applications for improving circulation, strengthening bone density, and improving male libido. There is very little clinical data regarding the effects of deer velvet, and not much is known about its side effects. Some conditions that may potentially be related to deer antler velvet include:
Reports claim deer antler helped Ray Lewis overcome his recent triceps tear, and Vijay Singh has admitted to using a spray supplement. University of Alabama football players also allegedly used deer antler sprays leading up to the 2013 BCS National Title Game. Whether or not those reports are true, one thing is certain: There’s not much proof that deer antler is a performance enhancer or a miraculous healer.
The company has found that powders have only about a 15–20 percent absorption rate of IGF-1. This is due to how the digestive system breaks down the powder. Nutronics states that their “proprietary sublingual spray delivery system” is superior to many competitors because it offers “enhanced bioavailability” of IGF-1. They also point out that “it is not the milligrams of Deer Antler Velvet in the product, it’s the content of IGF-1 and other Growth Factors in Deer Antler Velvet, that makes the difference.”(6)
Aphrodisiac* - For a long time the alcohol extract has been used to strengthen reproductive organ function, but modern studies of deer antler velvet results are inconclusive concerning women and from men. Although some people do report benefit in intimacy, this may be because of the performance, blood circulation and stress adaptation effects.* So in other words, if your supplement doesn't have the alcohol extract in it don't expect the benefits of supplements made with it.*
More recent tests (Slievert, 2003) confirm deer antler velvet’s effects on muscle strength and endurance. In a randomized, double blind, placebo controlled experiment, 18 males entered a 10 week strength training program. Those who took deer antler velvet showed an increase in maximal aerobic capacity, an increase in strength in the bench press and leg squat, and decrease in body fat relative to the placebo group.
In a randomized, placebo controlled test in 2004, researchers at the University of Alberta, Canada, placed 18 males from the Edmonton Police Force into a 9 week strength training program. The results showed that deer antler velvet increased the strength and endurance of the subjects relative to the control group. The researchers found that use of deer antler velvet significantly increased blood plasma testosterone levels. 
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