I make my own tinctures but being a busy mom of 3 in cold and flu season means I need to outsource and simplify. This is by far the best, most effective tincture brand/option for keeping my immune system strong while breastfeeding and parenting 3 kids. Also, the integrity of the tincture is unmatched. I can’t make it better myself and haven’t found any other brand this potent / good. I absolutely love Prairie Doctor.