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A: Household freezers can be used, but it is important to ensure the temperature is stable and within the recommended range
Injections are more effective for those with absorption issues or severe deficiency, but oral supplements work well for most people with mild deficiency and normal absorption
Subunit-specific modulation of glycine receptors by neurosteroids
Labelled gluten-free foods These foods can be consumed by people with coeliac disease
Other causes include strict vegan diets, malabsorption disorders (coeliac disease, Crohn's disease), gastrointestinal surgery, and long-term use of medications such as metformin or proton pump inhibitors
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