If you're buying OTC supplements like Vitamin D, CoQ10 etc...
I hadn't noticed before until today - but if you buy the brand: Nature Made - you can enter codes off the bottles for points to redem for rewards. Which includes $7.00 off coupons. So when you put that together with the B1G1 many drug stores run on this brand periodically - you can reap some savings.
http://www.naturemade.com