$1.00 OFF Any Flintstones Multivitamin or Supplement By Baron - April 6, 2016 399 Take advantage of this opportunity to save $1.00 off any Flintstones Multivitamin or Supplement. Flintstones Vitamins is the #1 Pediatrician-recommended brand of Children’s Chewable Vitamins. Just click the link below and print out the coupon.