Therefore, manufacturers often conduct label compliance audits as part of their quality assurance programs. Another critical consideration is the packaging environment. Supplement packaging must protect the product from environmental degradation caused by light, air, or moisture. Quality control in this area ensures that materials such as blister packs, bottles, and desiccants are appropriate for the product's characteristics and usage conditions. Tamper-evident seals, batch coding, and clear expiration labeling are also verified during the packaging process to enhance consumer safety and trust. In addition to in-house testing, many reputable manufacturers work with third-party laboratories for independent verification of product quality.
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