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If youre deficient in vitamin B12, an injection will definitely give your energy level a boost
Mayo Clinic: "Is it Possible to Take Too Much Vitamin C?" National Institutes of Health Office of Dietary Supplements: "Zinc" MedlinePlus: "Drug-induced Diarrhea" National Eating Disorder Association: "Laxative Misuse" National Cancer Institute: "Water-soluble Vitamin" National Institutes of Health Office of Dietary Supplements: "Omega-3 Fatty Acids" New England Journal of Medicine: "Marine n-3 Fatty Acids and Prevention of Cardiovascular Disease and Cancer" Harvard Health Publishing: "Fish Oil: Friend or Foe?" National Institutes of Health Office of Dietary Supplements: "Magnesium" Sports Medicine: "Gastrointestinal Complaints During Exercise: Prevalence, Etiology, and Nutritional Recommendations" Academy of Nutrition and Dietetics: "Easy Ways to Boost Fiber in Your Daily Diet" Clinical Endocrinology: "Vitamin D toxicity resulting from overzealous correction of vitamin D deficiency" Mayo Clinic: "What is vitamin D toxicity
The time investment of 4 additional weeks at an intermediate dose is nothing compared to the setback of severe nausea that forces you to restart at a lower dose
The British Society for Haematology emphasises that treatment should not be delayed whilst awaiting confirmatory test results if clinical suspicion of B12 deficiency is high, particularly when neurological symptoms are present
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