Levitra should be taken as and when required about an hour before you expect sexual activity. It should not be taken more than once a day. There are no particular rules about food except that, if you eat a heavy meal which has a high fat content, it will slow the rate at which the drug is absorbed into your blood stream. It will therefore delay the onset of the effect.

The doses are supplied in 5mg to 20mg tablets. For most men of average size and weight, 10mg should be sufficient to generate the required effect. But older men or those with kidney, liver or cardiovascular problems will start at 5mg and monitor the effects carefully.

The clinical studies have shown Levitra to be effective both in general cases of erectile dysfunction and dysfunction brought on by diabetes. It has also performed well in men who have had a radical prostatectomy. To that extent, it has a slightly better record in clinical trial across a wider range of medical causes of dysfunction than the other PDE5 inhibitors.