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.
Shake well before use. As a dietary supplement, spray 2 times under tongue, 3 times per day. Hold the liquid under your tongue without swallowing for 20 seconds. This allows the formula to penetrate through your endocrine glands. Then the active molecules are then released directly into your bloodstream. This is how Nutronics Labs' liposome technology is able to deliver an enhanced bioavailability! Caution: Do not use if outer seal is broken. Not intended for individuals under the age of 18. Consult your health care provider prior to use if you are pregnant or nursing, have a medical condition, or when taking any medication.
In Russia, Korea and China, deer antler velvet is widely used by athletes to enhance performance. In the United States, more and more athletes are looking to deer antler velvet as a training aid, a promoter of recovery after physical activity and injury, and possibly an injury preventative. Deer velvet could improve athletic performance in many ways, for example by assisting strength and endurance, by supporting the oxygen-carrying capacity of the blood, by facilitating minor tissue damage, and by boosting the immune system.
The product smells like lemon-scented cleaner and bears a resemblance to murky pond water. I hesitantly tried the stuff and found it surprisingly palatable, with a lemon taste, but not too sour and slightly sweet. The directions say to take 14 drops under the tongue, three times a day, but I stopped after one dose — so I probably don't have a good chance of reaping the benefits, if there are any.
A study (Yudin and Dobyrakov, 1974) on the effect of deer antler velvet extract on the static load-bearing capacity of subjects found that those who took the extract increased the time of work by 2-4 seconds compared to the control group. In tests of dynamic work using a veloergometer, the subjects who took the extract increased the work output 4 to 5 times more than the control group.
Velvet antler in the form of deer antler spray has been at the center of multiple controversies with professional sports leagues and famous athletes allegedly using it for injury recovery and performance enhancement purposes. In mid-2011 a National Football League (NFL) player successfully sued a deer antler velvet spray manufacturer for testing positive for methyltestosterone in 2009 for a total amount of 5.4 million US dollars. In August 2011, Major League Baseball (MLB) added deer antler spray to their list of prohibited items because it contains "potentially contaminated nutritional supplements." 
One of the leading companies in the world that manufacturers deer antler spray is called Nutronics Labs. According to information posted on their website, they have been making deer antler supplements for two decades. They state that their deer antler products range in concentration/strength from about 25,000ng (nanograms)–200,000ng of IGF-1. According to studies done by Nutronics Labs, deer antler powders appear to be less concentrated with IGF-1. They also may be poorly absorbed compared to deer antler extract.
The word antler is derived from the Latin Anteoculae, meaning "in front of the eyes." Antlers are present in almost all members of the deer family Cervidae. The first documented evidence of deer velvet as a medicinal was found on a scroll recovered from a tomb in Hunan China dating back 2000 years. The use of antler dates back to the Han Dynasty 206 BC to 220 AD. A 16th century medical text, Pen Ts'ao Kang Mu, lists several antler preparations including pills, tinctures, and ointments. In traditional Chinese medicine, velvet antler has been used for over 2000 years as a tonic, to improve bone health, to nourish the blood, reduce swelling, and to treat impotence. Later research on deer antler dates back to the 1980s in Russia. Hundreds of articles have since been published including those documented by Chinese, Korean, and Japanese scientists.14, 15
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.