Deer antler velvet is used for its purported ability to raise testosterone levels to treat decreased libido (low sex drive), infertility, and erectile dysfunction in men. It is used in combination with other herbs to treat sexual dysfunction and hormonal dysfunction in men and women. It is used to treat conditions resulting from deficient kidneys. Some people use it because of its reputed benefit as an aphrodisiac and muscle strength enhancer. It is also sometimes prescribed to help alleviate withdrawal symptoms in the treatment of morphine addiction.
One study (duplicated in Medline) that used a water extract of Velvet Antler at 50-200mg/kg failed to inhibit the pain killing effect of Morphine yet reduced the rate at which rats became tolerant to Morphine over the course of 6 days when taken an hour prior to Morphine each day. Rats who were given Velvet Antler prior to Morphine also experienced 26.6-36.6% less withdrawal (dose-dependent) and reduced reverse tolerance and dopamine receptor supersensitivity relative to morphine control.
Physical Vigor and Stamina: You don’t have to be an athlete to appreciate more energy and stamina. You may have long hours at the office, at home with kids, or at school, in training or partying. Without the energy you need to get through the day, nothing is fun-even the fun stuff. Unlike caffeine or energy boosting drinks which give you a temporary boost, Deer Antler Velvet changes you from the inside out, making increased vigor and stamina a part of your body’s natural response to the demands you place on it.
One study published in the Journal of Ethnopharmacology found evidence that use of deer velvet antler may help strengthen joints and bones, reducing symptoms like joint pain associated with osteoarthritis. (10) After rats with osteoarthritic symptoms were given total velvet antler polypeptides from red deer (TVAPL) for 12 weeks, they showed signs of significant reversal in osteoporosis. The researchers found improvements in the rats’ bone weight coefficient (BWC), bone mineral density (BMD), and bone mineral content (BMC). They believe these effects were due to proliferation of cartilage and osteoblast-like cells, in addition to reductions in inflammation due to inhibition of interleukin-1 (IL-1).
Deer antler velvet can play a pivotal role in helping to not only relieve the symptoms of diseases that affect joints, such as osteoarthritis, they can possibly eliminate them entirely. The way it may do this is through the introduction of chondroitin sulfate and glucosamine sulfate into the body. Both of these compounds are abundant in deer antler velvet.
Even sellers of deer antler products doubt that the products could deliver IGF-1. "IGF-1 is very unstable," Dean Nieves of Florida-based Bio Lab Naturals told the Baltimore Sun. "It could not exist outside of a very controlled environment." Nieves' company therefore markets the product as a nutritional supplement. "It is just packed with nutrients," he said.
Even more intriguing is how the stags manage to regrow their antlers. Scientists have found stem cells at the bases of antlers’essentially ‘blank’ cells that can develop into many different types of cell, such as a skin cell or a cartilage cell. If they could find out what triggers the stem cells and controls their development into antlers, the knowledge could be applied to the regeneration of human limbs and organs. Scientists know that the shedding is initiated by a fall in the hormone testosterone, a change linked to an increase in day length, and they think oestrogen may be a key cellular regulator. However, much more research on a molecular level is required to unravel what is clearly an intricate process.
After about 55-60 days of growth the velvet antler is removed painlessly from the deer in less than 60 seconds so that it may be done as humanely as possible. These deer are not harmed and experience no pain in the removal of their velvet antlers for our consumption. The antler is then scraped of its fuzzy velvet and then cleaned before it is sanitized and pasteurized for safety, and then inspected for quality grading.
On January 30, 2013, Vijay Singh professional PGA Tour golfer was caught unaware and openly admitted to the personal use of deer antler spray which contained a banned substance at the time. A week later the World Anti-Doping Agency (WADA) lifted the ban on deer antler spray, but with urgency, "Deer Antler Velvet Spray may contain IGF-1 and WADA recommends therefore that athletes be extremely vigilant with this supplement because it could lead to a positive test."  The consensus opinion of leading endocrinologists concerning any purported claims and benefits "is simply that there is far too little of the substance in even the purest forms of the spray to make any difference,"  and "there is no medically valid way to deliver IGF-1 orally or in a spray."