B12 injections tend to be most useful for: Patients on GLP-1 medications (semaglutide, tirzepatide) who feel fatigue in early weeks Patients with low energy, brain fog, or mood symptoms Vegetarians or vegans (plant foods don't contain B12) Adults over 50 (B12 absorption drops with age) Patients who've had digestive surgeries (bariatric, gallbladder) that affect absorption They're generally safe B12 is water-soluble, so your body excretes what it doesn't use
[9] Visual disturbances have been reported in patients with Leber hereditary optic neuropathy, and rapid B12 administration may precipitate optic nerve atrophy in this genetically predisposed population, mandating extreme caution or alternative therapy
Our standard B12 for drips is methylcobalamin (generally thought to be the most absorbable form,) and we also carry cyanocobalamin for anyone who is sensitive to methylated B vitamins
Long-term safety data beyond 24 weeks in humans do not exist
Interactions: Are there concerns with my current medications or conditions