While the pills you receive at the pharmacy counter may look slightly different from the brand, generic medicines work the same as costlier brand-name products. They have the same active ingredients, and the manufacturing and packaging must pass the same quality standards.
The U.S. Food and Drug Administration (FDA) requires generic drugs to have the same performance and quality as brand name drugs. The FDA says: “When a generic drug product is approved, it has met rigorous standards established by the FDA with respect to identity, strength, quality, purity, and potency.”
Cost is the main difference between generic and brand name prescription drugs. Unlike brand companies, generic manufacturers compete directly on price, resulting in lower prices for consumers. Generics have saved Americans $1.67 trillion over the last decade.
HealthSmart, “Generic vs. Brand Medications”
Scientific American, “What's the difference between brand-name and generic prescription drugs?”