In trials investigating Cialis, the majority of participants receiving the drug experienced a significant improvement in ED and maintained an erection. Alternative treatments Not all men need a tablet that works for up to 36 hours. Erectile dysfunction can be associated with heart disease and stroke. When is the best time to take Tadalafil 20mg? How Effective Is Cialis?Lemonaid sells Cialis in these forms: Cialis: available in doses of 5, 10, and 20 mg, starting at $65 per tablet. Daily Cialis: 5 mg tablet with pricing starting from $50 per tablet. Tadalafil: As-needed treatment: Doctors can prescribe 5, 10, or 20 mg doses. The company explains that a person can take the and 5 mg pills once, at the same time, each day. The price for tadalafil. 4 Ways to Save on Cialis for Erectile Dysfunction Written by Benita Lee, MPH Updated on June 23, Key takeaways: Cialis (tadalafil) is a popular medication used to treat erectile dysfunction. It’s available in tablets ranging from mg to 20mg.