You should also call your insurance company to see if they cover erectile dysfunction medications. It’s best to check your chosen provider’s site for more information. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. Nitrates come as tablets, sublingual under the tongue tablets, sprays, patches, pastes, and ointments. After taking tadalafil, it won’t just cause an erection on its own.Compare prices · NABP certified · Over $1B saved · Select pharmaciesTypes: Maintenance, Accute, Branded, Generic. mg 5 mg 10 mg 20 mg At 20 mg, both drugs are also approved to treat symptoms of benign prostatic hyperplasia (BPH), such as difficulty urinating. They work by relaxing the muscle cells in the prostate, allowing urine to flow out of the bladder. As a side note, there’s another medication that uses tadalafil as its active ingredient: Adcirca. Yes, Cialis is available as a generic medication called tadalafil. Generic medications are just as effective as the brand. Tadalafil 10 mg is available for about $10 for 10 tablets with GoodRx.