Tracked by Evreward since 2005, Serenity Health offers coupons, cash back rebates and rewards, with savings as high as $55 off. Serenity Health discount coupons are rare, only available once or twice a year, but are often more valuable than similar merchants. Even when Serenity Health doesn't have a coupon, you can always get up to 10% cash back, and other great rewards, with every purchase.