Deer antler products contain mostly amino acids (that form proteins) along with growth factors, which are poly-peptide bonded amino acid chains. (4) The most abundant growth factor is IGF-1. However, it isn’t a factor found in these products. Depending on the specific brand, deer antler spray/powder/capsules may contain amino acids and growth factors including: (5)
One study in men given 1.5g Velvet Antler for 11 weeks noted that intake of Velvet Antler was associated with a greater improvement in peak torque (30+/-21% more than baseline vs. placebo increasing 13+/-15%) and average power (21+/-19% vs. 7+/-12%) as assessed by leg extension; the authors noted that other parameters suggestive of power improvement (such as endocrine improvements or erythropoesis) did not occur and noted that replication is needed.[26] The lack of aerobic improvement noted in this study is contrasted by another study using 2,700mg of Velvet Antler (two doses of 1,350mg daily for 10 weeks) which improved VO2 max by 9.8%, although this study had a remarkably high dropout rate of 44% which precludes conclusions that can be drawn.[27]

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.
"This mountain bike loop that I do almost everyday usually takes 48-50 minutes. After a few weeks of Antler Farms®, I saw that number continually go down. I am at basically an average of 4 minutes shaven off every time that I do that loop. Faster recovery also. I have more energy later on in the afternoon. Just all around really good results. Good stuff. Highly recommend it."*

L-Arginine: An amino acid usually found in red meats that is important for the body’s ability to manufacture proteins. L-Arginine has been used to treat conditions like high blood pressure, congestive heart failure, blocked arteries, and erectile dysfunction. L-Arginine is safe for most people, however it should not be taken by women that are pregnant or breastfeeding.
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