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)
"I have been real happy with the results. My lifting has definitely increased alot. I've gotten alot stronger. My endurance is amazing too. It's kind of had a domino effect on my workouts and my health overall. I've added almost 10 lbs. of muscle, which has been great. If you are looking for a good product to take, I highly recommend the one I came across and the one I have been using, Antler Farms®."*
I know of no scientific evidence to support any of the marketing claims made for these supplements. I discussed your question with Tieraona Low Dog, M.D., an internationally recognized expert in the fields of integrative medicine, dietary supplements and women’s health, and an authority on botanical medicine. She explains that IGF-1 in the velvet promotes rapid growth of the antler. Dr. Low Dog notes that the two studies examining the effects of deer antler velvet supplements taken by athletes have yielded conflicting results. One showed some improvements in endurance and knee strength in weightlifters, but the other found no differences in rowers after 10 weeks of supplementation.
In September, 2013, the headquarters of S.W.A.T.S. was raided and ordered to be shut down by Alabama's attorney general citing "numerous serious and willful violations of Alabama’s deceptive trade practices act". Among the violations were "claims that the company made about a number of products that were unsupported by scientific research. Some of these products were marketed as 'dietary supplements.'"  The assistant Alabama attorney general "says that Deer Antler Spray is dangerous and its sellers are law-breakers." 
Shake well before use. As a dietary supplement, take one teaspoon per day. For best results, hold for 20 seconds before swallowing. This allows the formula to penetrate through your endocrine glands. Then the active molecules are released directly into your bloodstream. This is how Nutronics Labs liposome technology can deliver and enhance bioavailability!
Dr. Low Dog also reports that a chronic wasting disease in deer, elk and moose is the only recognized prion (infectious protein) disease of wild animals and has been found in 15 states and two provinces in Canada. (Prion diseases in wild animals are similar to bovine spongiform encephalopathy, better known as mad cow disease, in cattle.) No known cases of neurological disease have been seen in humans who have taken deer antler velvet supplements, but a 2009 study sponsored by the National Institutes of Neurological Diseases and Stroke and the U.S. Department of Agriculture concluded that the possibility remains.
In an ovalbumin sensitized mouse model, 4 weeks of Velvet Antler at 2.5-10mg total (weight of mice not given, assuming 20g this equals 125-500mg/kg or 10-40mg/kg for humans) was able to reduce total Immunoglobulin E (IgE) and Ovalbumin-specific IgE at 14, 21, and 28 days. When challenged with methacholine and subsequently having their airway power measured, it appeared that Velvet Antler exert anti-asthmatic effects in regards to allergies.
In Asia, velvet antler is dried and sold as slices, or as a powder which may be boiled in water, usually with other herbs and ingredients, and consumed as a medicinal soup. In the traditional commercial trade of Korea and China, whole stick antler velvet is divided into three sections based upon their supposed properties. Although there is an absence of uniform standardization, these sections are known as the wax piece (uppers or tips), the blood piece (middles), and the bone piece (bottoms): the wax piece may be marketed as a growth tonic for children, the blood piece supposedly for joint and bone health, and the bone piece supposedly for calcium deficiency and geriatric needs. Early commercial activity in Russia between the 1930s and 1980s led to the production of an alcohol extract from deer antler velvet marketed under the Russian drug trade name Pantocrin (also pantocrine or pantokrin).