What is the duration of the Purple Pill Viagra effect?

It's important to note that Purple Pill Viagra does not cause a constant erection for 4 to 6 hours. Rather, it helps you get and maintain an erection when you are sexually aroused. After the 4 to 6-hour window, Viagra's effects gradually wear off. This means that you won't experience an erection just by taking the pill again later in the day. For another erection, you would need sexual arousal and stimulation to activate the effects of the drug. For example, after about 4 hours, you may still have some minor effects, but the ability to achieve an erection in response to sexual stimulation will likely be reduced.