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B12 may be injected into a muscle or under the skin at 100 mcg daily for a week, every other day for another week, and then every three or four days for a month
Retrieved from North Texas Integrated Healthcare
Both methods bypass the digestive system, providing superior absorption compared to oral supplements
The compound's high membrane permeability and metabolic stability make it suitable for both acute and chronic study designs, but researchers should be aware that its effects on NAD+ and methylation metabolism may require time to fully manifest
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