Many are prescription-only substances listed in the poisons standard
Storage conditions in the real world vary widely (temperature fluctuations, humidity, light exposure, shipping conditions)
See what a recent study showed in our Dark Chocolates, Cocoa Powders and Supplements Review, which includes our Top Picks among cocoa extracts, cocoa powders , and dark chocolates
People with Absorption Issues Several conditions can impair B12 absorption: Pernicious anaemia An autoimmune condition thats the most common cause of severe B12 deficiency in the UK Crohns disease or coeliac disease Previous gastric surgery Including gastric bypass Chronic use of certain medications Including proton pump inhibitors (PPIs), metformin, and some anti-seizure medications Others at Risk Pregnant and breastfeeding women (who have increased B12 requirements) Heavy alcohol consumers Those with chronic inflammation affecting gut health People taking certain oral contraceptives B12 Deficiency in the UK: How Common Is It
2007 Sep 10;570(1-3):212-21
We would rather look at the full picture with you than have you keep guessing about why you feel run down