Although the site states that this product shouldn’t cause ill side effects, most western medical practitioners would dissuade you from taking this because the components found in deer antlers haven’t been approved by the FDA. More importantly, IGF-1 has been proven unstable. So, it’s best to speak to your physician, especially when you’re currently taking other forms of medication.
Euricoma Longfolia: A shrub found in Southeast Asia that is said by some native cultures to enhance male virility. It has been used unofficially to treat fever, high blood pressure, bone pain, and syphilis, and the limited clinical data about euricoma longfolia that exists suggests it may possibly increase testosterone levels. There is no data about the long-term effects of euricoma longfolia consumption.
Aphrodisiac* - For a long time the alcohol extract has been used to strengthen reproductive organ function, but modern studies of deer antler velvet results are inconclusive concerning women and from men. Although some people do report benefit in intimacy, this may be because of the performance, blood circulation and stress adaptation effects.* So in other words, if your supplement doesn't have the alcohol extract in it don't expect the benefits of supplements made with it.*

A systemic review on human interventions[25] makes note of a study conducted on patients of osteoarthritis (Edelman et al. 2000; cannot be located online) which found improvements in joint pain symptoms relative to baseline in the Velvet Antler group and not placebo, although a lack of information on blinding and randomization precludes results that can be drawn from this study.