Avana works by increasing blood flow to the penis during sexual stimulation, enabling a firm and lasting erection. It is important to note that Avana should only be taken under the guidance and prescription of a healthcare professional. Avana is available in different strengths, typically ranging from 50 mg to 200 mg. The appropriate dosage will be determined by your healthcare provider based on your specific needs and tolerability. It is important to consult with a healthcare professional to determine the most suitable dosage for you.