B12 deficiency on its own leads to memory loss, cognitive decline, depression, constipation, diarrhea, nerve damage / numbness, sore tongue, insomnia, fatigue, abdominal discomfort, easy bruising / anemia, and and memory problems
Get bloodwork before starting
This scenario is whats happening far too regularly with B12 deficiency and the situation is down to lack of education and correct, clear information about this condition
Thats because utilization of vitamin B12 (especially from supplements) depends on levels of other metabolic cofactors and acids
How long is the 4-day trek and what is the itinerary like
Oral B12 vitamins rely on your stomachs acidity and intrinsic factor for absorption, which can be variableespecially if you have gut issues or take acid-blocking medications