Muscle Milk Protein bars, powders, and shakes are buy one get one 50% off at Rite Aid this week. Use Ibotta rebates to save even more! Unlock rebates before checkout, and they will automatically apply to your Ibotta account within 2-3 days after purchasing the qualifying items. You won’t have to submit your receipt because your Wellness+ Plenti account is synced with Ibotta. No coupons are needed to pay as low as $0.49 for protein bars!