I would think that the church wouldn't recommend this drug viagra or any other drug to help a couples sex life; I think that you are right though in that it would not be a sin to use it. There are probably natural supplements or certain types of foods that would help a persons sex life; I know that I have seen ads for things like this that seem to be safer than viagra.
Ronald.. The church isn't 'recommending Viagra.. Viagra is prescribed by a doctor to assist in the treatment of a medical problem that affects MANY men.. It is a circulatory system medication that increases blood flow to many parts of the body..The penis being one of those parts.. It is actually not safe to take if you don't have the medical problem that it's needed for.