Are there any vitamins or minerals I can take to increase the volume of my ejaculation?

Two I've heard of are zinc and lecithin. Is there any truth to this?

There is a connection between the intake of certain vitamins and minerals and the quality and quantity of a man's ejaculation, not to mention his sexual health in general. Vitamin C, vitamin E, zinc, and essential fatty acids are found in the prostate in high levels, and are all necessary to produce semen. Low zinc levels have been connected to decreased production of seminal fluids, as well as lower testosterone levels. A healthy balance of nutrients is important for maintaining vascular health as well, which improves your ability to achieve and maintain erections. There isn't a need to go popping extra vitamins if you are already eating a diet rich in nutrients, particulary from fruits and vegetables. Essential fatty acids are found in certain kinds of fish (like salmon) and nuts.