Check to see if you have an Authentic Optimum Nutrition Products


We know that ON quality is as important to you as it is to us. Use the tips on this page to help authenticate original ON-made products.

  • Neck Bands

    Neck Band

    Tubs of Gold Standard 100% Whey have a gold hologram seal on the black plastic neck band. Platinum series products have a clear neck band with silver hologram. Other powdered products have either black, silver, or clear plastic neck bands without holograms.

  • Tub Design

    Tub Design

    The crease on the bottom of U.S. made tubs of protein is a mold mark from plastic thermoforming. It looks the same on every tub and is normal. Tubs produced in the U.K. have a circular indentation without a line running across the bottom. This is normal for European made tubs.

  • Date & Batch Codes

    Date and Code

    On the bottom or side of protein tubs you’ll find ink jet printing listing a manufacture date, expiration date and batch code. Powdered products have a 2-year shelf life, so the dates should be 2 years apart. On bottles of capsules, tablets and softgels, the dates and batch code are printed on the side in white.

  • Vacuum Barriers

    Vacumm Barrier

    Under the cap of protein tubs is a cardboard vacuum barrier that helps hold powder in place during shipping. This round disk is not for sanitation and is not glued into place. It is common for the cardboard to stick under the cap. The round seal under the caps of bottles containing capsules, tablets and softgels is glued down and typically won’t stick under the cap.

  • New Look, Same Trusted Quality

    New Look

    The world's best-selling whey protein powder has a new look. Because the transition is a process, you may receive either of these designs depending on where or when you purchase. Keep in mind both GOLD STANDARD 100% WHEY label designs are authentic and feature the additional quality markers highlighted on this page. For details, please contact [email protected] in India or [email protected] everywhere else.

  • International Authenticity

    New Look

    Our products vary slightly from region to region in design, formulation, and features. Please check the links below for your local region's Authentication Tips:
    Europe Authentication
    Russia Authentication
    India Authentication
    Latin America Authentication


We believe you get out what you put in – which is why our certified manufacturing facilities only use high quality ingredients and strict quality control when making our products.


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