Hi Olga, I agree the problem is likely related to the allopathic
meds taken earlier, which can cause some permanent damage in
various ways. However herbs can help enormously to rebuild.

For your immediate question, ginseng and damiana herbs for sex.
Planetary Formulaas makes a Ginseng Revitalizer which is a
combination of 6 ginsengs. Damiana is a western herb that is
easy to find in single herb form. One or two each daily will likely
do the job - you could go higher but these are hot herbs, why
go higher than you need, so experiment around.

However, you need to restore the subtlest
energy reserves so these hot herbs above won't further burn
out his system! - what the chinese call kidney yin, and for this
something like Planetary Formulas Rehmannia Endurance, maybe start
with 3-4 daily, and back down to 2 daily after a week, ongoing
maintenance, especially since he is over 40. And, take 2 more
after sex for restoration. Herbal formulas in the
PF brand can be chewed for more direct contact with the herbs.

Good nutrition, vitamins, minerals especially enough calcium/
magnesium, protein, eggs, cottage cheese are all good for the
nervous system,
which is the basis for everything. In chinese med, the water
element, or "kidney" relates to nervous system,
hormones, reproduction, bones, aging, etc etc.

I also have an article on adrenal support that may be of
interest.

Carol Willis
http://groups.yahoo.com/group/willis_protocols
(articles in Files for members, not a discussion group)