Nitric oxide supplements work by increasing vasodilation, delivering more oxygen and nutrients to muscles while exercising. However, experts say the research supporting claims of improved fitness performance and endurance are mixed. Except for potential vomiting and diarrhea, nitric oxide supplements are “generally harmless.” While there is no official dosage recommendation, experts say 6 to 13 grams appears to be most tolerable. Food sources are always preferred to supplements since they come with additional ingredients such as antioxidants and vitamins. Some examples are beets and leafy greens since they are high in nitrates. IF BOOSTING YOUR endurance at the gym (and in the bedroom ) are on the top of your list of health goals, you might have heard about nitric oxide supplements. Along with the above, the popular supplement is linked to a number of other health benefits. But does it actually work?…