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Cialis vs. Viagra: How Are They Different?
The difference lies primarily in the effective windows of each medication: Viagra can last up to four hours, while Cialis lasts around 36 hours. Because both drugs work by affecting the blood ...
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Cialis 20 mg: What You Need to Know Before Starting It
In comparison, avanafil only lasts up to six hours and Viagra® only lasts up to four hours. Cialis is effective. Clinical ...