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Simon A, et al

Many people in Greenwood Village, CO, experience these issues, which can be attributed to various factors, including stress, poor diet, and nutrient deficiencies

Phase 2 Side-Effect Frequencies at 4.5 mg/week (Lancet 2021) Side Effect Nausea Incidence at 4.5 mg/week 47% Side Effect Injection-site reactions Incidence at 4.5 mg/week 43% Side Effect Constipation Incidence at 4.5 mg/week 21% Side Effect Fatigue Incidence at 4.5 mg/week 20% Side Effect Allergic reactions (any) Incidence at 4.5 mg/week 10% Side Effect Vomiting Incidence at 4.5 mg/week 8% Side Effect Loose stools Incidence at 4.5 mg/week 7% Side Effect Headache Incidence at 4.5 mg/week 7% Side Effect Indigestion Incidence at 4.5 mg/week 4% Incidence was lower at lower doses

One study in the The Journal of Allergy and Clinical Immunology found that some injected forms of B vitamins at higher doses, like B12, can be linked with an allergic reaction

The MTHFR mutation is common and can impact your health, but the effects vary depending on factors like diet, lifestyle, and environment

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