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Precautions : Be sure to keep monitoring your levels if youre using more than 2,000 IU of vitamin D per day, as large doses can cause hypercalcemia (signs include headache, weakness, nausea, vomiting, and constipation)
In fact, most people notice they have better focus and decreased fatigue within the first 24-48 hours
However, you will find that most vitamin supplements contain much higher doses of vitamin B12, such as 500mcg or 1000mcg
Some are legitimate FDA-approved drugssuch as insulin analogs and GLP-1 medications (Ozempic, Mounjaro, Zepbound)backed by decades of safety and efficacy research
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