The compound appears well-tolerated in animals at doses well above those producing metabolic effects
skin regeneration Stimulates skin cells (fibroblasts) to multiply and produce more collagen, improving skin structure and helping wounds heal
Like most treatments, vitamin B12 injections carry warnings that patients should be aware of, including: Hereditary Optic Nerve Atrophy: People with early Lebers disease (a hereditary form of optic nerve atrophy) should not receive cyanocobalamin injections, as rapid and severe vision loss has occurred
If anything, most studies seem to trend towards higher B12 levels being protective
The severity of side effects can often depend on the individual and the dosage
People with low B12 may experience: Persistent fatigue or low energy Weakness Brain fog, concentration issues, or memory changes Low mood or irritability Pins and needles, numbness, or nerve-type sensations Mouth ulcers or a sore tongue Paleness or shortness of breath (if anaemia is present) Some symptoms can become more serious if deficiency is prolonged, particularly neurological symptoms