(HealthDay News) — Pre-workout supplements are the buzz around many gyms and athletic facilities. But before you chug these products and start exercising, it’s important that you know more about the supplements.

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Cleveland Clinic offers this advice about these products:

  • The supplements typically come in powder or pill form.
  • The main ingredient is usually caffeine. Most brands range from 150 milligrams (mg) to 300 mg of caffeine per dose.
  • These products are generally safe if the maker is credible.
  • If you’re sensitive to caffeine, take these products with caution.

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