Many people are looking at Tongkat Ali, Arginine,... to increase their libido. However these supplements are also important from an anti-aging point of view. As we age the reduction in testerone production is going to cause problems : weight gain, loss of muscle mass, hair loss, osteoporosis,....
Body builders use arginine because it helps with blood flow allowing them to exercises more. As we age we all have problems with blood flow, it's call getting old:(. Even though we might not be body builders we can still benefit from the vasodilation effects of arginine.
Some of us might have heard about Nitroglycerin. It is being prescribed for heart patients because it coverts to NO(nitric oxide). You don't need a prescription for arginine . It's also reasonably cheap, a 1 pound bottle for $30