When I had a full blood count done in about November my B12 was 284 (190-900) and my gp grudgingly gave me 50mcg cyanocobalamin. I tried this for a while (about a month) and then, after posting on here and taking note of replies, I bought some 5000mcg Jarrow and Solgar. I've been taking one a day now for about 6 weeks.
My question is this - how long before I start to feel the benefit? I did feel a little better after about 3 weeks but I seem to have dipped down again. Any help most welcome