Viagra (sildenafil) typically starts working within 30 to 60 minutes after taking it, and its effects last for about 4 to 6 hours. In some cases, the effects may last up to 12 hours, but this varies depending on factors like age, diet, lifestyle, dosage, and individual metabolism. It is most effective within the first 2 to 3 hours after taking it. Viagra only works when you are sexually stimulated and the duration and strength of erections may be influenced by personal health factors. The medication should not be taken more than once every 24 hours.
Summary of Timing
- Onset: 30 to 60 minutes (sometimes as soon as 12 minutes)
- Duration: Typically 4 to 6 hours; can last up to 12 hours in some people
- Peak effectiveness: 1 to 2 hours after taking
Factors Affecting Duration
- Age and metabolism
- Food intake (high-fat meals can delay onset)
- Dosage and individual health conditions
- Liver and kidney function
Viagra remains in the system longer, but after about 4 to 6 hours, the concentration decreases enough that its noticeable effects weaken significantly.
Important Notes
- Viagra requires sexual arousal to work.
- Effects do not necessarily prolong sexual activity duration.
- Do not exceed one dose in a 24-hour period.
