If he takes Viagra, she should also find out what the real cause is. That's because Viagra may be only a temporary solution. Suppose a man is having problems because of a tranquilizer or antacid he is taking. Adding Viagra is just another drug. It would have been better to change the brand of antacid or tranquilizer.
Men have a meno pause, but different from women's.
They don't have a sudden drop in hormone levels, like women do, but they do have a lowering of desire in their 40s and 50s. We all need to make sensible adjustments to our lives and have understanding for each other. But a lessening of desire - particularly fewer morning erections. Depression is one. But surprisingly anger is the emotion most responsible for male problems.