I have started supplementing B12 Sublingual 1000mcgs. What I need to know is do I need folate aswel and what type? Having been supplementing for about 4 weeks and feeling a lot better, since yester I have been having serious muscle pain in my thighs and also weakness and fatigue. I also been reading that potassium levels can drop when supplementing B12.
b12 250 (range 196-660)
Folate 7.6 (range 4.8-18)