The speed of response depends on how low vitamin B12 levels were before treatment and how long deficiency had been present
Think of It Like This Picture a drug test as a security checkpoint
Regulation (EU) no 1169/2011 of the European parliament and of the council of 25 October 2011 on the provision of food information to consumers, amending regulations (EC) no 1924/2006 and (EC) no 1925/2006 of the European parliament and of the council, and repealing commission directive 87/250/EEC, council directive 90/496/EEC, commission directive 1999/10/EC, directive 2000/13/EC of the european parliament and of the council, commission directives 2002/67/EC and 2008/5/EC and commission regulation (EC) no 608/2004 text with EEA relevance
Cholecalciferol (Vitamin D3)
Human studies have mainly described pharmacokinetics, safety, and tolerability, rather than demonstrating strong clinical effectiveness
Subcutaneous Drug Injection Review (PMC) Pharmacologic considerations of the subcutaneous route for drug delivery