I am kinda confused-- are u asking about weaning the pheno or the Lamictal ? Your post heading talks about Lamictal, but your post itself talks about adding pheno all at once and I am not clear what is happening as far as the Lamictal, your particular situation and what is going on with both meds....

In general though, most seizure and long term medications are weaned off in incriments in order to prevent withdrawl seizures and other strange things. Most of the time, the weaning schedules aren't as slow as the titrating ones, but it can depend a lot on the med (as some are titrated very fast, and others are more slowely done so).

L2L