Before anything else one of the best treatments is prevention, and of course as with anything a healthy life well lived always puts you on a good starting point.
So exercise regularly. Good long walks instead of jogging, which is much healthier for you. Some weight training because testosterone is produced when you try to build or maintain muscle mass. Diet is essential, a good balance of proteins, fruits and vegetables and good fats like fish oils and good carbs like whole wheat.
Another good way to go for the mental and emotional components is with relaxation therapies and techniques, get yourself a massage and take up something like Tai-Chi which strengthens the body and helps clear the mind. Take up a hobby and set regular times to allow yourself to enjoy them, and if your wife bugs you about your love of golf, tell her it’s Doctor's orders.
Aside from physical activity and good eating,there is also a more direct way of combating Andropause is with Hormone Replacement Therapy, just like in Menopause. Where pharmaceutical Testosterone is added by a medical regime. This part of the treatment must be given by a medical practitioner and carefully monitored. Also while having hormone therapy one should have the prostate checked regularly, there is no definite link between testosterone replacement and prostate cancer but it has been shown that previously undiagnosed and already present cancerous cells can be accelerated by hormone therapy. There are many ways to take testosterone as prescribed by your physician; there are patches, pills, shots and even crèmes.
Lastly there’s that little blue pill, Viagra. All the before mentioned treatments should do wonders for your sex life without supplements but even the best of us need a little help rising to the occasion. But when it comes to erectile aids always have them prescribed by your Doctor because there can be some adverse affects when coupled with other medications.