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Use with caution if you have existing heart, liver, or kidney issues

Fasting administration minimises enzymatic degradation but doesn't eliminate first-pass hepatic metabolism, so bioavailability remains limited regardless

Restoring NAD+ levels is one of the most promising areas of longevity research, particularly when combined with complementary metabolic compounds

Doses of vitamin B12 exceeding 10 mcg daily may produce a hematologic response in patients who have a folate deficiency

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