Citruline
Citrulline has a viagra like effect because the amino relaxes and dilates blood vessels. L-Citrulline is one of the three dietary amino acids in the urea cycle, alongside L-arginine and L-Ornithine. L-Citrulline reduces fatigue and improves endurance for both aerobic and anaerobic prolonged exercise. Your kidneys change L-citrulline into another amino acid called L-arginine, which breaks down further to nitric oxide (NO). So L-citrulline boosts nitric oxide production in the body.
Nitric oxide helps your arteries relax and work better, which improves blood flow throughout your body. This is helpful for treating or preventing many diseases, and improve circulation.
Citrulline supplements have been used as a safe alternative to viagra. Red flesh watermelons have slightly less citrulline than yellow or orange flesh watermelons:
- Red flesh (7.4mg/g dry weight): Watermelon flesh is 92% water. Citrulline content in 1/2 a watermelon (500g): 296mg
- Yellow flesh (28.5mg/g dry weight): Watermelon flesh is 92% water. Citrulline content in 1/2 a watermelon (500g): 1040mg
- Orange flesh (14.2mg/g dry weight) : Watermelon flesh is 92% water. Citrulline content in 1/2 a watermelon (500g): 568mg
A typical Citrulline erectile dysfuntion supplement dose is 1500mg (1.5g). So eating a whole watermelon could beat this. In the citrulline trial, all E.D. patients reported an erection hardness score improvement.