Features > Comparing Cialis, Levitra and Viagra
There are three drugs competing for your dollars that address issues of male sexual performance enhancement. Below is a chart comparing the three drugs. Follow the following links for price comparisions of online pharmacies: Viagra, Levitra, Cialis.
| PRODUCT COMPARISON | Cialis | Levitra | Viagra |
| Manufacturer | Lilly Icos | Bayer | Pfizer |
| Date Released | February 2003 | April 2003 | March 1998 |
| How long does it work? | up to 36 hours | up to 6 hours | up to 5 hours |
| Takes how long before action? | 30 minutes continuing to 12 hours | 25 to 45 minutes | 60 minutes |
| Most common side effects: | Headache, Myalgia dypepsia/upset stomach, back pain | Headache, facial flushing | Headache, facial flushing, altered or bluish vision |
| Contraindications | Any Nitrate-Based Medicine including Poppers, Angina, Hypertension, Hypotension | Any Nitrate-Based Medicine including Poppers | Any Nitrate-Based Medicine including Poppers |
| Effectiveness diminished with fatty foods | No | No | Yes |
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