| Levitra | Cialis |
Drug class | Phosphodiesterase-5 (PDE5) inhibitor | Phosphodiesterase-5 (PDE5) inhibitor |
Brand/generic status | Brand and generic available | Brand and generic available |
What is the generic name? | Vardenafil | Tadalafil |
What form(s) does the drug come in? | Oral tablet | Oral tablet |
What is the standard dosage? | 5 to 20 mg as needed before sexual activity up to once daily as directed by a doctor | 5 to 20 mg as needed before sexual activity or 2.5 to 5 mg once daily as directed by a doctor |
How long is the typical treatment? | This medication is taken as needed. Long-term daily use is not recommended. | This medication is taken as needed. Daily use may be appropriate for some people. |
Who typically uses the medication? | Adults 18 years of age and older | Adults 18 years of age and older |