What it is
Spedra (EU) and Stendra (US) are brand names for avanafil, a prescription PDE5 inhibitor.
General differences
Avanafil is generally described as having a relatively fast onset.
Common side effects
Headache, flushing and nasal congestion have been reported.
Important warnings
Must not be combined with nitrates. Contraindications and interactions apply.
Consult a professional
Speak with a qualified healthcare professional.