These include cardiovascular responses (tachycardia, palpitations, elevated blood pressure), central nervous system symptoms (insomnia, restlessness, jitteriness, dizziness, tremors, headache), mood changes (euphoria or irritability), and gastrointestinal effects (dry mouth, unpleasant taste, constipation, occasional diarrhea)
Common related sterile solutions include: Sterile water for injection a preservative-free water used when a preservative is not wanted, such as in newborns
Many people are deficient without knowing it especially those who eat plant-based diets, take certain medications, or are over 50
Regular supplementation may preserve focus, memory, and clarity as part of a proactive brain health or longevity care plan
Hydroxocobalamin 1,000mcg IM injections monthly (longest-lasting) Severe deficiency needing fast correction