Can you take childrens Claritin while take sulfamethoxazole tmpds?

Yes, you can generally take children's Claritin (loratadine) while on sulfamethoxazole/trimethoprim (TMP-SMX). There are no known direct interactions between these two medications. However, it's always best to consult with a healthcare provider or pharmacist to confirm safety based on your specific situation and any other medications you may be taking.