Filitra contains Vardenafil, a PDE5 inhibitor used for erectile dysfunction. The most common side effects are headache, flushing, nasal congestion, dizziness, and indigestion. Sleep disturbances like insomnia are considered unusual or indirect effects. How insomnia may happen: Increased stimulation or anxiety: Some users feel mentally alert or excited after sexual activity or anticipation of performance,  Filitra 20 Mg   can delay sleep. Headache or discomfort: Side effects like headache or flushing may make it harder to fall asleep. Heart rate changes: Mild cardiovascular stimulation in sensitive individuals can sometimes affect relaxation. Alcohol or caffeine combination: Taking Filitra with alcohol or stimulants may increase sleep disruption. Important note: Filitra itself does not directly act on the brain’s sleep centers, so it is not classified as a sleep-disrupting drug. When insomnia occurs, it is usually due to individual sensitivity, timing of dose, or lifestyle factors rather than the medicine alone. When to be cautious: If insomnia is persistent, severe, or accompanied by chest pain, dizziness, or anxiety, it is important to consult a doctor. Adjusting the dose or timing often resolves the issue.