What is the half life of sildenafil?

How long does sildenafil stay in the body? (half-life)

Sildenafil’s elimination half-life is about 4 hours.

What does “half-life” mean for users?

Because the half-life is roughly 4 hours, the drug’s level in the body falls by about half every ~4 hours after peak effects, though the exact duration of noticeable effects can vary based on dose, metabolism, food intake, and individual health factors.