Long-acting drugs that allow you to only take one pill a day certainly have their drawbacks.

While you're more likely to remember to take your medication if it's one-a-day, according to Drugs & Aging, if you do forget, you've missed your treatment for the whole day.

By contrast, if you have a pill to take three or four times each day, you can forget one of them and still get most of the benefit.

In one study, subjects were just as likely to take once-a-day drugs and twice-a-day drugs.  But the chance that they would go the whole day without any medication was twice as great with the once-a-day medicines.