Other conditions that may disqualify you from an ED prescription include a history of stroke, kidney or liver disease, cancer, diabetes, or a bleeding disorder. An erection results from an increase in blood flow to the penis. Some services offer a subscription option where they’ll send your medications every month at a discount. The trade-off is that the higher the strength, the greater the chance of side-effects and adverse events. Read our editorial process. The starting dose we generally recommend is the 10mg pill.Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic . Form Bottle Box Disp Pack Tablet No data Dosage mg 5mg 10mg 20mg No data Quantity 5 6 10 15 30 90 No data. How to take Cialis? Cialis is a prescribed medication. It is available at local pharmacies in the form of tablets. Your doctor will prescribe the medication depending on your .