One hour would not make a difference.. I would keep taking it at your normal time if that's the time you remember.

One hour won't make a huge difference as long as you take it around the same time from now on. If you used to take it at 10, then continue to take it at 10. It can get confusing if you start messing with the time...You may forget all together. I never worry about daylight savings or anything. As long as you don't forget a pill, you'll be fine...No harm done in changing by an hour!! :)