You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. BlueChew — Best Chewable Tablets BlueChew is a telemedicine service that provides discreet monthly subscriptions for chewable tablets of sildenafil the active ingredient in Viagra , tadalafil the active ingredient in Cialis , or vardenafil the active ingredient in Levitra. If you are a Mayo Clinic patient, this could include protected health information. Do not use more of it and do not use it more often than your doctor ordered. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.FAQs Brand-name vs. generic Reducing long-term drug costs Financial assistance Next steps Viagra (sildenafil) is a brand-name oral tablet prescribed for erectile dysfunction. The cost of the drug. Last updated on Uses Warnings Before taking Dosage Side effects Interactions FAQ What is sildenafil? Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men.  · A Madison lawmaker talking up her proposal to exempt menstrual products from the state sales tax drew a comparison that caught our attention. In a July 27, post on X, formerly Twitter, state.