This consists of food. While Viagra may be taken with a meal, grapefruit or grapefruit juice should be averted.
Sildenafil could cause painful erections, so it is generally prevented in men with penile deformities (Peyronie’s illness, cavernosal fibrosis, or angulation) or different situations that increase the danger for priapism such as sickle cell anemia, leukemia, or multiple myeloma.
While Viagra could be taken with food, grapefruit and grapefruit juice must be avoided on the day a dose is taken. Grapefruit has substances that slow down the breakdown of sildenafil within the body, raising the danger of unwanted effects, including some of the worst negative effects.

Grapefruit has substances that block the liver enzyme that breaks down sildenafil, raising the chance of negative effects. Because sildenafil is damaged down by the liver and excreted in the urine, people with severe kidney disease or liver problems may have to be monitored or have doses decreased.