I just started taking Concerta (36 mg) and I immediately developed shingles. My doctor swears it's a coincidence, but I can't help but wonder. I had chicken pox as a child, but I've never had shingles before now. I went to the doctor today and got neurontin and valtrex, but the doctor told me to keep taking the Concerta. I don't know what to do because the Concerta is helping my ADD, but I also believe it at least played a part in my shingles outbreak.