The duration of tadalafil effect may vary among individuals, but in general:

1. Effect on erection

-Tadalafil has an effect that can last up to about 36 hours. This means that, in this period of time, a man may have a greater facility to get and maintain an erection in response to a sexual stimulus.

However, it is important to bear in mind that:

2. Factors that may influence

-Diet: a fat-rich diet can delay the absorption of tadalafil and possibly affect the duration and potency of its effect.

-other medicines: interaction with other medicines may change the duration of the effect. For example, interaction with proton pump inhibitors (used to treat heartburn) may increase the concentration of tadalafil in the blood and possibly prolong or intensify its effect.

-General health: factors such as liver and kidney function can influence the metabolization and elimination of tadalafil, which in turn can affect the duration of its action.

Tadalafil should be taken according to medical instructions, and should not be self-medicated or exceed the recommended dose.