Whether it's a common food we can order in a restaurant or an herb with medicinal properties that naturally drives us wild with desire, aphrodisiacs are a popular ancient cure for an ailing sex drive.
Although the study was too small to draw decisive conclusions, it does demonstrate that marijuana has an influence on sex, and that it tends to be a positive one.
My advice is that if premature ejaculation is due to anxiety and the patient is already an occasional smoker, a low dose of cannabis which can alleviate anxiety may help the situation.