Leber's Disease Nervup 500 MCG Injection is not recommended for use in individuals who have Leber's Disease, a rare genetic disorder characterized by painless and sudden vision loss
High-concentration liquid research formulas require more oversight than generic compound listings
If symptoms are severe or rapidly worsening, seek prompt medical advice rather than waiting for a pharmacy appointment

Chan School of Public Health: "Vitamin B12." Inflammatory Bowel Diseases: "Prevalence of and risk factors for vitamin B(12) deficiency in patients with Crohn's disease," "Vitamin B12 deficiency in inflammatory bowel disease: prevalence, risk factors, evaluation, and management." MedlinePlus: "Cyanocobalamin Injection." National Health Services: "Hydroxocobalamin," "Treatment -Vitamin B12 or folate deficiency anaemia Contents," "Vitamin B12." Nutrition Reviews: "How prevalent is vitamin B(12) deficiency among vegetarians?" Surgery for Obesity and Related Diseases: "Vitamin B12 deficiency in patients undergoing bariatric surgery: preventive strategies and key recommendations." The American Journal of Clinical Nutrition: "How common is vitamin B-12 deficiency?" The American Journal of Gastroenterology: "Vitamin B12 deficiency in untreated celiac disease." Top B12 Injections Who Get Them, How Quickly They Work Related Articles 22 Healthy Foods High in B VitaminsAny deficiency of B vitamins can lead to various health conditions

Here's what can happen when we don't get enough folate: Severe congenital disabilities since folate demand is higher in pregnancy
Lung Cancer In 2017, a study found that men taking B12 supplements appeared to have an increase in lung cancer risk