Cialis/Tadalafil-20mg to Treat ED

Cialis is approved for the treatment of men who experience difficulty having and maintaining an erection (impotence).

Cialis works by enhancing the effects of one of the chemicals the body normally releases into the penis during sexual arousal. This allows an increase of blood flow into the penis. An erection is the result of an increase in blood flow into certain internal areas of the penis.

Cialis is different from other currently approved products for ED in that it stays in the body longer.

Cialis is taken orally before sexual activity, not more than once daily. Cialis may be taken with or without food. In some patients, the dose strength and maximum frequency of use may be adjusted. For more detailed information consult with your health care provider.

Dosages: 

You can take a Cialis 5 mg daily and maybe the 10 mg, but the 20 mg should have a 36 hour window before the next dose. So in answer to your question you can safely take Viagra 36 hours after a 20 mg Cialis dose.

Taken on an as-needed basis, the typical dosage is 10 mg, though it is available in 20 mg and 5 mg doses if 10 mg turns out to be non-ideal. When taken as a daily regimen, the recommended dose is 2.5 mg. daily Cialis therapy has been shown to be effective at improving erectile functioning over the course of treatment.