Vigora 50 mg (which contains sildenafil citrate) can potentially affect sleep quality in some users, though this is not very common. Possible effects on sleep include: Insomnia or difficulty falling asleep – Some men report increased alertness, restlessness, or overstimulation after taking sildenafil. Nasal congestion or headaches – These side effects can interfere with comfort and disrupt sleep. Vigora 50 mg dreams or sleep disturbances – Occasionally, sildenafil may influence REM sleep patterns. Anxiety or elevated heart rate – In rare cases, it may cause nervousness or palpitations, affecting relaxation. When it's more likely: Taken too close to bedtime Used in higher-than-recommended doses Combined with alcohol or stimulants If the user is already prone to anxiety or insomnia Tips to reduce impact on sleep: Take Vigora at least 2–3 hours before bedtime Avoid caffeine or alcohol around the same time Use only under medical supervision, especially if sleep disturbances occur If sleep problems persist after using Vigora, it’s best to consult a doctor. While most men tolerate the drug well, individual reactions can vary.