Cialis can work for up to 36 hours in your body.

To treat erectile dysfunction (ED), your doctor may have you take Cialis only as needed before sexual activity. (See the “Cialis dosage” section below to learn more.) In this case, Cialis may keep working for up to 36 hours in helping you have and maintain erections during that time.

However, if you take Cialis each day for either benign prostatic hyperplasia (BPH) or ED, you’ll consistently have medication in your system. Therefore, it will continue to work throughout the day.

You may wonder how Cialis compares with other medications that are prescribed for similar uses. Here we look at how Cialis and Viagra are alike and different.

Note: Sex and gender exist on spectrums. Use of the term “male” in this article refers to sex assigned at birth.

Ingredients

The active ingredient in Cialis is tadalafil. The active ingredient in Viagra is sildenafil. Both Cialis and Viagra belong to a group of medications called phosphodiesterase 5 (PDE5) inhibitors.

Uses

The FDA has approved Cialis and Viagra to treat erectile dysfunction (ED) in males. ED is a condition in which you can’t get or maintain an erection.buy Cialis 20mg 100 online

Cialis is also FDA-approved to treat:

• symptoms of benign prostatic hyperplasia (BPH), a prostate condition that may cause problems with urinationbuy Cialis 20mg 100 online
• ED and symptoms of BPH together

Drug forms and administration

Both Cialis and Viagra come as tablets that you swallow. Cialis may be taken once a day or just when needed for sexual activity. Usually, Viagra is taken only as needed for sexual activity.

Effectiveness

Cialis and Viagra have different FDA-approved uses, but they’re both used to treat ED.

The use of Cialis and Viagra in treating ED has been directly compared in clinical studies.

Costs

Cialis and Viagra are both brand-name drugs. Currently, there are generic forms of both drugs. The generic form of Cialis is called tadalafil. The generic form of Viagra is called sildenafil. Brand-name medications usually cost more than generics.buy Cialis 20mg 100 online

The actual price you’ll pay for any of these drugs depends on your insurance plan, your location, and the pharmacy you use.