Brand-name Cialis: Generic Cialis (tadalafil) Daily generic Cialis (tadalafil) Hims: $ per month (5mg) starting at $40 per month (5mg, 10mg, 20mg) starting at .You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Cialis can help achieve an erection when sexual stimulation occurs. If you are a Mayo Clinic patient, this could include protected health information. Other uses for this medicine This medication may be prescribed for other uses; ask your doctor or pharmacist for more information. Take both tablets one after the other.Tadalafil (Cialis) is used to treat erectile dysfunction (ED, impotence; inability to get or keep an erection), and the symptoms of benign prostatic hyperplasia (BPH; an enlarged . Brand-name Cialis: Generic Cialis (tadalafil) Daily generic Cialis (tadalafil) Hims: $ per month (5mg) starting at $40 per month (5mg, 10mg, 20mg) starting at .If you ever need emergency medical treatment for a heart problem, the health care providers who treat you will need to know when you last took tadalafil. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Taking more than 1 dose every 24 hours can cause heart issues and other problems. If you are taking tadalafil for erectile dysfunction, your doctor will probably start you on an average dose of tadalafil and increase or decrease your dose depending on your response to the medication. Common side effects may include: headache; flushing warmth, redness, or tingly feeling ; nausea, upset stomach; runny or stuffy nose; or muscle pain, back pain, pain in your arms, legs, or back. Side Effects What are the side effects of Cialis Tadalafil?