Cialis is considered to be the most powerful ed medication among all the three ones approved by the Food and Drug Administration. No other medication has such an efficacy that endures for more than 42 hours during which you will feel no limitation in your sexual wishes and desired. Taking Cialis will not make you change your life style and habits. You will feel yourself a normal person who does no think about any problems. Cialis is getting rather popular among drug users as it lets them be free from all the health conditions and disorder. Your erectile dysfunction can have different causes and the health care provider needs to define them and prescribe the medication and its dosage. As Cialis is one of the most powerful medications and you will be advised to start with the lowest dosage available and see if there will be any positive results. If the prescribed dosage does not do any good, you should not increase it by yourself, In any case you want to increase or lower the dosage of the prescribed medication, you need to contact your health care provider for additional details. Lowering the dosage of Cialis can cause some side effects or you can aggravate your health conditions. If you decide to try Cialis as your personal ed medication, you should never do it without notifying your health care provider and if you have already bought the medication you need to learn all the interactions and side effects of medications. Having tried once, you will see that all your concerns about your male inability will go away and you will not feel disabled again. All the mental pressure that you have will disappear within 15 minutes when Cialis starts working. But there is a problem concerning Cialis pills as the price for them is rather high and not everyone is able to afford it. But some Americans use the services of foreign online pharmacies and feel pretty much happy as they can buy Cialis pills at the price three or four time lower than in the United States of America. But the nearest country where you can get your Cialis pills is Canada and the quality of medications is rather high. There are a lot of advantages of buying Cialis from Canada as the medications can be delivered to you on the following day.