I would really appreciate some help, as I feel like I am doing everything right, but not getting anywhere! I was feeling awful with muscle cramps, heart pounding fatigue and weakness from mid December until around 10th January, when I realised the symptoms correlated with my running out of coconut water and not buying more because of lack of funds. Obvious potassium deficiency. I'm now trying to eat more potassium rich foods, drink coconut water and take 1 99mg potassium tablet daily. I feel SO much better than I did at that time, but still not great, still so tired - getting up to make food, go and wash my hair etc takes major effort and willpower. Below are details of the supplements I am taking daily. I am also on 375mg daily Venlafaxine, Dianette contraceptive for PCOS, Aciclovir 800mg daily to prevent cold sores (which I believe is the virus that triggered my CFS back in 2007). Morning/early afternoon Nature's Own Wholefood Multi (contains MB12, Mfolate & P5P, full list and amounts in link under ingredients) L-Cartinine Fumarate, 2x 855mg Phosphatidyl Serine 100mg, Phosphatidyl Choline 8mg, Phosphatidylethanolamine 4mg (all in one capsule) L-Lysine - 100mg D-Ribose 2x 1g Lithium Orotate 2x 5mg Opti3, providing 250mg EPA, 500mg DHA, 780mg total Omega3, plus 5mcg vit D3 GliSODin, 250mg Magnesium 1,250mg Metafolin (Solgar) 4x 1000mcg MB12 (Jarrow Formulas) 5000mcg sublingual Evening and/or nighttime Potassium 99mg Co-Q10 100mg Zinc 10mg Magnesium malate 1250mg Vitamin D3 62.5mcg Recent Blood Results. There were more results but everything else was well within normal range, so I omitted what I thought might not be relevant. Serum Sodium 137mmol/L (133-146) Serum Potassium 4.0mmol/L (3.5-5.3) Serum Urea level 1.9mmol/L (2.5-7.8) Low Serum B12 2000ng/L (246 -911) High Serum Folate 24.0ug/L (3.4-20.0) High Serum Ferritin 20.2ug/L (20-300) *This may be on the low end of normal as I was having a very heavy period at the time, sorry for TMI! SNPs are in my sig. I am not experiencing any kind of bad reaction to the high doses of B12 and folate. Do you think I need more potassium to compensate for the high doses of folate & B12? I know there are some knowledgeable folks on here, like @caledonia and @Freddd, and I would really appreciate some advice! I want to get better! Thanks for reading!