Viagra should not be effective for longer than 4 hours. If you are asking whether it loses its effectiveness during long-term use, it shouldn’t. We do need to consider an individual’s frequency of use, other medical and physical conditions, and other psychological and emotional factors that may effect how well Viagra works for them in the long run. On its own, Viagra should be effective as long as your doctor sees it to be safe for you.
Viagra…does it lose strength?
Viagra should not be effective for longer than 4 hours. If you are asking whether it loses its effectiveness during long-term use, it shouldn’t. We do need to consider an individual’s frequency of use, other medical and physical conditions, and other psychological and emotional factors that may effect how well Viagra works for them in the long run. On its own, Viagra should be effective as long as your doctor sees it to be safe for you.