Bottom line: Rogol says it’s “extremely unlikely” that deer antler in any form could offer athletes a boost. “Deer antlers do contain growth factors,” he explains. But it’s a huge leap of faith to talk about an extract doing anything beneficial for human beings, whether it’s slowing aging, developing muscle, or repairing tendons, he adds. Opinions like Rogol’s are one reason the FDA and anti-doping agencies haven’t yet taken steps to ban deer antler products that contain IGF-1.
Performance - Borrowing the scientific research, its mandatory use by the Soviets has shown increased blood circulatory benefits, liver protective attributes and nerve strengthening effects of the aqueous alcohol extract.* This means it increases nervous innervation, easily known as the contractile capacity of muscle groups.* This leads to short burst style athletic performance increases found in weightlifting, bodybuilding, and similar sports.*
I recently ordered IGF-1 Plus Maximum in order to gain results from my physical therapy workouts. Since using this product, I am not only able to do harder workouts, but I also have increased muscle mass. Besides these benefits I have experienced improvement in my wound healing! Areas that repeatedly break down are showing increased healing like never before. My hands, which are severely scarred, have more flexibility. I look forward to the many benefits that may come from using IGF-1. Thank you Rick Lentini!
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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.
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." 
The movie The Raging Bull was inspired by the true life story of boxing legend and middle weight champion of the world, Jake Lamotta. He was known as the Raging Bull and the Bronx Bull. His character was depicted by Academy award winner Robert Deniro and went on to win 2 oscars under the direction of Martin Scorsese. Jake Lamotta was known as one of the toughest fighters in the world. He fought Sugar Ray Robinson 6 times in his career, the last fight being remembered as the Saint Valentine’s Day Massacre.
Most of the world's supply of velvet antler comes from Sika deer, red deer and elk or wapiti, including a large deer ranching industry in New Zealand. New Zealand is the world’s largest producer of velvet, producing 450-500 tons of red deer velvet antler annually. China produces 400 tons of predominantly Sika deer velvet antler annually. Russia produces 80 tons annually. United States and Canada each produce 20 tons annually.
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.