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Given 40-60% nasal bioavailability compared to 80-95% for injection, equivalent nasal doses would be approximately 400-1000mcg to achieve similar systemic levels
Glutathione is a powerful antioxidant that helps to reduce hyperpigmentation and sun spots
Beginner tip: If you are new to glutathione supplements, start with 1 tablet daily for the first two weeks to let your body adjust before continuing long term
For systemic effects (tendons, muscles), injectable administration with higher bioavailability is generally preferred by researchers
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