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CIALIS vs VIAGRA vs LEVITRA
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| VIAGRA (Sildenafil citrate) | CIALIS (tadalafil) | LEVITRA (vardenafil HCl) | |
| How does Viagra, Cialis, Levitra work? | Viagra increases blood flow to the penis and helps men with erectile dysfunction to solve the problem of potency. When a man is sexually excited, Viagra helps the blood flow to the penis in sufficient quantity to cause an erection | Cialis helps flow of blood with sexual stimulation, and makes possible the emergence of an erection | Levitra helps increase blood flow to the penis. Levitra has been clinically shown to improve erections in men also have such diseases as high blood pressure and high cholesterol |
| How long will it take for Cialis, Levitra, Viagra to work? | Viagra takes effect in about 30 minutes and the effect can last up to 4 hours | Cialis offers 2 types of applications: for daily use and 36-hour Cialis. With daily use man can be ready for sex at any time. When Cialis taken as needed effect occurs after 30 minutes and can operate up to 36 hours |
about 1 hour before sexual activity |
| Dosage | 25mg, 50mg, 100 mg | 5 mg, 10 mg, 20 mg | 2.5 mg, 5mg, 10 mg, 20mg |
| Price for generic (per pill) | from $1.08 | from $1.17 | from $2.22 |
| Price fo brand (per pill) | from $5.08 | from $9.83 | from $10.25 |
| What are the possible side effects? | The most common side effects of Viagra are flushing, headache, indigestion, and abnormal vision, but there are others. | The most common side effects of CIALIS are: muscle aches, flushing, headache, back pain, indigestion, and stuffy or runny nose, but there are others uncommon side effects | The most ubiquitous side effects: headache, flushing, runny nose, upset stomach and indigestion. But there are other less common |