My kids are unvaxed, but am considering a tetanus vax since their grandparents have horses. Where would I find more info on supplements for helping their bodies through the vax process?
It's been awhile since you posted this, so you may have already looked into it and found your answer.
But if not, I'm going to direct you to Dr. Sears section on Vaccines and boosting your child's immune system. He suggests probiotics, omega-3s, vitamin c, and vitamin a for supplements and has a few nutritional suggestions too.