Viagra, Cialis and Levitra compared
ED drugs compared
There’s an agreement between the drug companies that they will not fund research that compares like with like. This allows all the manufacturers to say their drug is the best without any evidence to prove them wrong. Just think of the losses. A company has invested tens of millions in developing a drug and, the first time it’s tested, the researchers find it less effective and more dangerous than every other drug on the market. This trend has continued with the three erectile dysfunction drugs with one exception. Where a limit has been found in the effectiveness of one drug, the competitors are prepared to see whether their products can do any better.
Why mention patents?
A patent gives a monopoly to a manufacturer and no one can copy the work for a fixed period of time. But there’s no protection on the idea. So long as a competitor invests their own time and labor in producing a product that does the same thing, this is protectable in its own right. Viagra was the first one on the market. Cialis and Levitra have the same effect, but they work in slightly different ways.
There’s no one-size-fits-all drug
Everyone has similar biology, but there are always slight differences between individuals. This means a drug that works in the expected way in one person may not have the same effect in a different person. In drug trials, manufacturers are looking for the best results from the most people. This allows for a percentage of people having no benefit from, or an adverse reactions to, the drug. With three to choose from, it’s up to you to try each one to find which works best for you. That said, there are three common precautions. Do not:
- drink too much alcohol;
- take any other drug containing a nitrate; and
- drink the juice or eat the flesh of a grapefruit.
You should get advice before restarting sexual activity if you have recently had a stroke or heart attack. The doctor will also adjust the dosage if you are older or have any problems with your liver or kidneys.
Why choose Viagra?
This was the first one released on to the market in 1998. It has been proved effective and safe by millions of men around the world.
Why choose Cialis?
This has earned the nickname of the “weekend pill” because, in the as-need version, it delivers sexual responsiveness for up to thirty-six hours. At a lower dosage, there’s a once-daily version allowing normal sexual response 24/7.
Why choose Levitra?
This is the strongest of the three drugs, producing its effect at the lowest dose. Some people prefer to take the smallest possible amount of any drug. It has also proved itself more effective in cases where the other two drugs have tended to fail, i.e. in cases of nerve damage due to type 2 diabetes and following surgery for prostate cancer.