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Key Ingredients: Vitamin D3 *Specific Vitamin D blood tests are required
Life Extension's formula avoids fillers and artificial additives, delivering only essential nutrients for optimal health
After a comprehensive medical and health evaluation, your doctor will make recommendations for treatment
ZENTRA supplies it as high-purity lyophilised research material in 50mg and 100mg formats for controlled laboratory and analytical applications
Low vitamin B12, which can sometimes happen with low iron or poor nutrition, may lead to darker lips
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