Can I take vitamin B1 while breastfeeding?

Hello, Every summer for the last 3 years I have been taking vitamin B1 to reduce mosquito bites (a pharmacist had advised me to take it and it worked for me). This summer, I am breastfeeding my 4 month old baby. We don't take any medication on a regular basis and have no history of illness. Is there any risk of taking vitamin B1 daily this summer with breastfeeding? Can I do that? Thank you very much for your help.