First, as previously mentioned, there are men who were deemed ineligible for a generic Viagra prescription after completing the online medical questionnaire. It’s available in 50 mg, mg, and mg tablets. Common side effects include headache, facial flushing, indigestion, and dizziness. Friday Plans acknowledges that the need for generic Viagra can fluctuate over time, and by allowing easy adjustments to subscription plans, they ensure that customers only pay for what they need and avoid accumulating unused medication. Erectile dysfunction medications require a prescription from a licensed provider.Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic prescriptions Medical . Key takeaways: The best treatment for erectile dysfunction (ED) is the one that is best for you. Sildenafil (Viagra) and tadalafil (Cialis) are the most commonly prescribed . There is generic Viagra now. They have 20mg and mg tablets. It’s usually $/bottle depending on your pharmacy.