Concerns about the shelf life of creatine supplements are common. Fortunately, research indicates that creatine monohydrate is remarkably stable and can remain effective for years when stored properly. The key factor determining its longevity is environmental conditions, with moisture being the primary agent of degradation.
According to creatine researcher Scott Forbes, PhD, CISSN, creatine monohydrate degrades rapidly when exposed to liquids or humidity. This is why pre-mixed creatine drinks are rare. However, if the supplement is kept in a dry, sealed container, it can maintain its quality and effectiveness even beyond its printed expiration date. Studies suggest that temperature is a less significant factor than moisture in preserving creatine's integrity.
