Niacin -- with or without the addition of drugs to treat impotence -- poses serious health risks, including stomach ulcers and liver damage. If you have Type 2 diabetes, taking niacin could cause drastic elevations in your blood sugar levels. Less serious side effects include stomach upset and skin flushes -- your face and chest turn red and your skin itches, tingles or burns. You can purchase niacin without a prescription, but some over-the-counter formulas -- no-flush varieties that contain niacinamide -- will unlikely help lower your cholesterol.
The number of intromissions in the 5 mg/day group was comparable with controls. On the other hand number of penile thrusting was significantly increased with the same dose. These are indications of unimpaired erectile function due to supplemented zinc. Our observations also confirmed the lack of aberrant sexual behavior which is indicative of uninhibited penile tactile sensations. Sexual behavior may also be changed with motor weaknesses and incoordination. Supplementation with zinc did not impair muscle strength or coordination when tested with bar and bridge tests, indicating that prolongation of ejaculation was not mediated through these mechanisms.
Zinc is a trace metallic element that occurs naturally in the earth. Certain vegetables, meats, and seafood have more zinc content than others. This makes it fairly easy to obtain zinc through a varied diet. An extreme zinc deficiency is rare in the United States, as most people get some zinc through the foods that they eat. However, when levels of zinc fall below the recommended threshold, problems begin.