valtrex and the feingold diet

[Guest guest]

My son has been on the Feingold diet for almost 4 years. He is

extremely sensitive to any infraction. Infractions bring long-lasting

regression.

We are getting ready to start Valtrex. I understand that most people

wash off the blue coating. But, my DAN! is concerned that we will not

be able to get off 100% of the blue coating, leaving behind a trace

amount that could be a Feingold issue. And then, if my son regresses

with Valtrex, we won't know if Valtrex is the problem or if it is a

Feingold problem.

Is there anyone else with a Feingold kid who has figured this out?

Thanks.