Vitamin B12-responsive severe leukoencephalopathy and autonomic dysfunction in a patient with normal serum B12 levels
doi: 10.1038/309163a0
Understanding the Types of Drug Tests and Their Role in Peptide Detection To answer the question of whether peptides can appear on drug tests, its crucial to understand the different types of testing methods used

Daily 2 Capsules Cellular Energy Pro Advanced energy support* CONTROL Glucose Metabolism & Insulin Sensitivity* Encourages Calorie Burn Promotes Leaner Body Composition Helps Regulate Metabolism Supports Healthy Blood Glucose Levels Assists in Preventing Weight Re-gain Reinforces Carbohydrate Tolerance Active Ingredients: MitoBurn (B-aminoisobuytric acid, L-BAIBA), Factor21 Bitter Melon Extract (Momordica charantia), Berberine HCL, GlucoVantage (Dihydroberberine), InnoSlim (Astragalus membranaceus and Panax notoginseng) Root Extracts, Actiponin gynostemma pentaphyllum extract, CaloriBurn GP Grains of Paradise seed extract Other Ingredients: Vegetable Capsule (Hypromellose, Gellan Gum), Microcrystalline Cellulose Take 3 capsules daily or as directed by your healthcare practitioner
Luke's Hospital lists the following drugs as those that might possibly interact with B12 injections
[1] Without intrinsic factor, dietary B12 cannot be absorbed effectively, leading to deficiency regardless of dietary intake