What is a good product to stop me getting so tired help with my libido and increase sex drive ?

None proven.: There is no proven product that will do that. First you need to figure out why at 43 you have these problems. Your GP may be able to rule out underlying physical causes and address them. A decreased libido and fatigue can also be a sign of depression, anxiety, stress. The sexual problems by themselves can also indicate relationship problems. A psych eval may help. Good luck!