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Citable Takeaways Glutathione peroxidase (GPx) is the primary enzyme responsible for neutralising hydrogen peroxide generated during thyroid hormone synthesis, and its activity depends on adequate selenium status (Schomburg, 2011
Its administered into the upper arm (deltoid muscle) by one of our qualified pharmacists or trained pharmacy technicians
This means theres less oversight of how effective they are, and product quality can vary between brands
It means the signal-to-noise ratio is harder to interpret
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