Well, shy of the trileptal that says:
If you remember up to 4 hours after you should have given a dose, give your child the missed dose. For example, if you usually give a dose at about 7 am, you can give the missed dose at any time up to 11 am. If you remember after that time, do not give the missed dose. Just give the next dose as usual.
And the welbutrin:
If you miss a dose of this medicine, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
If you are taking the Wellbutrin XL® extended-release tablet and you miss a dose, skip the missed dose and go back to your regular dosing schedule.
The other 2 say to take as soon as you can, given that it's not next to your next pill taking time.
But that's just what online says. Personally I just take things regardless because my pill taking time varies up to 7 hours on the weekend. Do whatever you think you should, or call the pharmacy! That's always a safe and best thing to do!