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For instance, in one 1960s study of intravenous NAD+ for addiction, patients who received a fast IV drip experienced immediate headache and shortness of breath, whereas those given the same dose at a slower drip rate (under approximately 35 drops/min) had no distress

Abnormally rapid heart rate

The Long-Term Timeline: 2 to 3 Months and Beyond The most lasting benefits are structural and take time, especially where the nervous system is concerned

Vitamin B12 is needed for physical growth and development and for the formation of red blood cells in the bone marrow

Is the 46 hour timing window critical, or is there flexibility

The NIH lists the adult recommended daily allowance at just 2.4 micrograms but absorption varies widely person to person