The most powerful known anticoagulant is also the best known leech enzyme :

NITRIC OXIDE
Dilation of blood vessels necessary for a normal erection depends on a substance called nitric oxide. Enhances sexual performance for men and sexual health for women by maximizing blood flow to your sexual organs. Boosts your own nitric oxide levels, which maximizes blood flow to where you need it most.


HIRUDIN
Hirudin is an anticoagulant “blood thinner” peptide that occurs naturally is the salivary glands of the Medical.



HISTAMINE
Vasodilator. The leech vasodilator is a histamine-like substance and is found in the salivary cells. The release of histamines are a requirement for achieving orgasm. Histamine release during sexual activity is what causes the "sex flush" and may help improve sexual functioning by helping with the lengthening of orgasms and also more intense sexual enjoyment and pleasure.


PHEROMONE
Pheromone is a natural sexual attractant the body produces to subconsciously attract the opposite sex. This pheromone natural attractant can also contribute to intense love making during sexual foreplay and sexual intercourse . Chemicals in men's bodies can cause their female sex partners to be more fertile, have more regular menstrual cycles and milder menopause.