Animal Stak 2 is a supplement manufactured by Universal Nutrition, a company that makes products ranging from protein powder to diet pills intended for use by bodybuilders and other athletes. Animal Stak 2 is designed to increase levels of testosterone, a hormone that promotes muscle gain and improvements in athletic performance. While Animal Stak 2 might offer some beneficial effects, there also are potential side effects associated with its use. Consult a doctor before using Animal Stak 2 or any other supplements.
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Delayed Muscle Recovery
Although Animal Stak 2 is intended to promote improvements in muscle building, some ingredients actually might cause a delay in muscle recovery. One of the primary ingredients in Animal Stak 2 is vitamin C, a nutrient that acts as an antioxidant. While antioxidants can help protect your body's cells from free radical damage, research published in the September 2009 issue of "Medicine and Science in Sports and Exercise" indicates that antioxidants also can delay muscle recovery by interfering with natural adaptations to exercise.
Consuming Animal Stak 2 contains Pygeum africanum, an herbal extract used to limit inflammation and promote testosterone production; however, this ingredient also might cause upset stomach and nausea. Another ingredient in Animal Stak 2 that might cause nausea is magnesium.
Irregular Bowel Movements
One of the primary ingredients in Animal Stak 2 is saw palmetto, a plant extract that might be beneficial for a variety of issues, including migraines, low sex drive and asthma. However, saw palmetto also might cause constipation or diarrhea. The latter effect also is associated with magnesium supplementation.
Animal Stak contains large doses of zinc, a mineral that promotes protein synthesis, a process that aids in muscle building, but too much zinc can cause headaches. Saw palmetto also can cause headaches.