Is Viagra an acceptable solution to help with stamina or is it only for ED?

Where did you get the idea Viagra helped with stamina?

Viagra is for (usually) older guys that have problems obtaining an erection.

The BEST way to increase stamina is to make positive lifestyle changes - - - -

No smoking - no beer/ale - no booze - no drugs. ANY of these can interrupt blood flow to your penis resulting in diminished libido & cause erectile dysfunction or impotence.

Stress, anxiety, depression, fatigue, crappy diet, lack of exercise, & some medications can also cause malfunction at the junction.

GET ADEQUATE SLEEP

Your body needs adequate amounts of sleep in order to maximize sexual performance and sexual virility. A lack of sleep is a major cause of low sex drive and/or sexual problems. Strive to get at least 7-9 hours of sleep each night to increase and maintain sexual virility. Take afternoon rests or naps when possible.

Viagra is a pull to get you hard. Not prolong sex! Geeezzzz

It won't keep you from climaxing any faster but it will get you erect over and over again so you can prolong sex.