Filitra 40 mg is a higher-strength dose, typically prescribed when lower doses are ineffective. It is taken 25 to 60 minutes before intercourse, and its effects can last for up to 4 to 6 hours. The medication only works in the presence of sexual arousal and does not cause an automatic erection. Common side effects may include headache, flushing, nasal congestion, dizziness, and upset stomach. Serious but rare side effects include vision changes or prolonged erections (priapism), which require immediate medical attention.
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