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.
To be clear, some doctors and researchers have stated that they feel deer antler spray is unlikely to cause any significant benefits. This is because it only provides very small amounts of IGF-1, some of which may not even be fully absorbed. However, studies do show that higher doses, or using very high-quality supplements, may contribute to some improvements in performance, body composition, etc. IGF-1 itself has been studied extensively. It can certainly change the way the body looks and operates. Whether or not the role of IGF-1 in the body will translate into any real benefits when obtained from deer antler products will depend on the specific person and dosage used.
Generally researchers agree that deer antler velvet protects, strengthens and restores the body's functions that are out of balance. In other words, it can act as an adaptogen on the human body, helping where it is needed. Studies suggest that deer antler velvet may have beneficial effects related to: increases in muscular development, strength and endurance; improved recovery; prevention and reduction of inflammation; improvement of sexual health; reduction in blood pressure; improvement in bone and joint health; stimulation of the immune system; and more.
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.