Tracked by Evreward since 2016, Heartland Vet Supply offers coupons, cash back rebates and rewards, with savings as high as $24 off. Heartland Vet Supply discount coupons are rare, only available once or twice a year. Even when Heartland Vet Supply doesn't have a coupon, you can always get up to 10% cash back, and other great rewards, with every purchase.