Common Stomach Side Effects of Vitamin B12 Supplements Although vitamin B12 supplements are generally well-tolerated, some individuals experience gastrointestinal symptoms, particularly when taking oral formulations
Weekly 0.5mL shots got her to 650 pg/mL while costing 30% less than her supplement habit
Reported symptoms include headache, nausea, diarrhea, facial flushing, and in rare cases, skin rash or tingling
When Oral Supplements Are A Great Choice If your B12 deficiency is purely down to your diet, high-dose oral supplements can be an excellent and affordable alternative
International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity , 25 (10), 14421449