My little rescue JoJo tested positive for heartworms in Sept. 2015. I had been giving her heartworm prevention from the time I brought her home. I was devastated and had her checked two more times all three test showed positive. A co-worker told me about the Guinness beer treatment and I really had my doubts. I started the treatment and she never showed signs of illness. Today 1/9/16 I had her retested and it was NEGATIVE!!! I’m seriously considering taking all my dogs off the prevention and doing the Guinness treatment.
