Talk to your doctor prior to starting Vitamin E, particularly if you are currently taking aspirin or other blood thinners. Zinc plays an important role in the formation of new sperm and maintenance of sperm motility. A deficiency in zinc can result in hypogonadism, impotence , decreased sperm count or decreased motility possibly resulting in infertility. Adequate levels of zinc in the body are essential for men's reproductive health. Not all men have a zinc deficiency however - ask your doctor if he thinks zinc supplementation may be appropriate for you.
High doses can cause abdominal pain, diarrhea, metallic taste, nausea, and vomiting.
Take zinc with a full glass of water. One study found that yohimbe is more effective in treating impotence compared to a placebo or sugar pill. Patients with high blood pressure should also avoid this product. Possible side effects are anxiety states, elevated blood pressure, nervousness, queasiness, sleeplessness, racing heartbeat, tremor, and vomiting. It is critical to discuss the correct dosage of yohimbe with your health care provider.