Filitra 40 mg is typically prescribed when a lower dose is needed. The usual starting dose is 10 mg, but depending on individual response and tolerance, the dose may be adjusted to 40 mg or higher. Common side effects include headache, flushing, nasal congestion, and indigestion. Serious side effects can include sudden vision or hearing loss, and priapism (an erection lasting more than 4 hours). Seek medical attention if these occur..

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