Does Pre-Workout Expire? A Supplement Scientist Explains
If you’ve ever found an old tub of pre-workout in the back of a cupboard, you’ve probably asked yourself whether it’s still safe to use. In many cases, the answer is yes—recently expired pre-workout is often still fine. But it can go bad, and whether it’s safe or effective depends on how old it is, how it’s been stored, and what’s happened to it over time. Here’s how to tell if your pre-workout is still good—or ready to toss, according to supplement scientist Katie Vasenina, Ph.D. Key Takeaways Yes, pre-workout expires. Most last about 2 years unopened and roughly 6 months after opening, depending on storage conditions. Expired pre-workout usually becomes less effective before it becomes unsafe, because ingredients gradually degrade over time. Moisture, air, heat, and light speed up breakdown and can cause clumping, texture changes, and flavor deterioration. Signs your pre-workout may be past its prime include hard clumps, odd smell, discoloration, or weaker effects. ...