Levitra, or vardenafil, is one of several oral medications used to treat erectile dysfunction, or ED. Levitra belongs to a class of agents called phosphodiesterase-5, or PDE5, inhibitors. Food and Drug Administration in August 2003 and soon after joined other drugs on a growing list of medications that interact with grapefruit. Like all drugs in this class, Levitra improves blood flow to the penis, thereby helping maintain an erection to permit sexual intercourse. PDE5 is an enzyme found in several tissues, including your blood vessels, lungs, intestines and eyes. It is found in particularly high concentrations in the smooth muscle cells lining the blood vessels of your penis. PDE5 breaks down a molecule called c GMP, thereby reducing your cells’ ability to produce nitric oxide. Nitric oxide promotes blood vessel dilation, which enhances blood flow to the penis and improves erectile function. 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You may want to limit your consumption of grapefruit and grapefruit. Levitra and Alcohol / Food Interactions - Levitra - Uses, Side Effects, Interactions - Levitra grapefruit juice, 20 mg levitra reviews Levitra is a drug used to treat erectile dysfunction. It is part of. Also, it is worth noting grapefruit juice can possibly affect the absorption of Levitra Vardenafil. buy tetracycline for chickens uk The MTEA's lawyers contend that FDA-approved Viagra, Cialis and Levitra should not be taken with grapefruit juice. While there's no shortcut, a healthier diet. You should not drink grapefruit juice with vardenafil. This is because there is a chemical in grapefruit juice which can increase the amount of.