A. The cashback offer from Netmeds is called NMS SuperCash. Your Netmeds Wallet will be credited with the cashback that you get via this promotion. Up to 25% of the cost of each prescription drug purchase may be paid using NMS SuperCash. NMS Cash can be used for anything that is available on the website. However, NMS SuperCash cannot be used for over-the-counter goods and can only be redeemed against prescription drugs.