and to select international destinations
This includes older adults, those with diagnosed deficiencies, individuals with gastrointestinal disorders, or those on specific medications that affect B12 absorption
Vitamin B12 for Athletes: Dosing and Evidence (2026): The Short Answer Vitamin B12 (cobalamin) is essential for red blood cell production, oxygen delivery, and nerve function, all of which directly affect endurance performance
For active B12 deficiency, most clinicians recommend weekly or biweekly shots for the first 4 to 6 weeks, then a maintenance shot every 1 to 3 months
Johns wort is a supplement that has been used to treat depression, menopausal symptoms, and somatic symptom disorder
Mood changes are another common sign