As I get older I can appreciate why the Roman emperors went in for orgies. After a few rounds with the same person, at my age the interest flags and it's the thought of the new or the various I find stimulating. Fortunately I've never seemed to need Viagra but I have discovered a new wheeze that a chum put me up to. There's a supplement that often comes with Vitamin pills for the ageing executive called "lycopene" and I can thoroughly recommend it. In the US it's marketed with something that rejoices in the delightful name of "One a day men's" - http://www.one-a-day.com/products/menshealth.shtml - and generally http://www.lycopene.org/

So far I've relied on friends kindly bringing me imports. I'd better check Boots and Siam Drug to see if they have something similar