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Product: Pain relievers
Big brand: Advil ($15.48 for 200 ibuprofen caplets)
Savings (per unit): 74%
Store brand: Wal-Mart's Equate ($4 for 200)
Active ingredients in OTC drugs are regulated by the FDA, so there's no difference between brands.
NEXT: 79. Best times to skip big brands
Last updated May 12 2010: 10:39 AM ET