World harvest extends far and wide. The farming of deer species for their velvet antler has been occurring for a long time in China and Russia. The Asian industry raises a predominant amount of sika, aka. spotted deer, on private and communal farms where they are well cared for by private owners. Quality of a this profound botanical is of utmost importance. Farms in Asia it is also both industry and government regulated for quality, safety, and the welfare of the animals.
Tanejeva also tested the effect of deer antler velvet in athletes running three kilometer races. In the experiment, 50 men ran the distance and their completion time was recorded. Deer antler velvet extract was administered to half of the runners and the participants repeated the race.  The group receiving the Pantocrin completed the subsequent race in a faster average time.
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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.
In herbal combinations, deer velvet is used to improve athletic performance; to improve eyesight and hearing; to reduce stress; and to treat arthritis, osteoporosis, “tired blood” (anemia), women’s reproductive disorders including premenstrual syndrome (PMS), ED, and skin conditions. Herbal combinations including deer velvet are also used to increase blood circulation to the brain and to delay or reduce signs of aging such as tissue, bone, and muscle degeneration, and declining mental skills.

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.