Tracked by Evreward since 2019, HigherDOSE offers coupons, cash back rebates and rewards, with savings as high as 25% off. HigherDOSE discount coupons are somehwat rare, available a few times each year. Even when HigherDOSE doesn't have a coupon, you can always get up to 15% cash back, and other great rewards, with every purchase.