Hi Xlynx, Yes, I have some ideas. The effects you are having appear to be caused by your neurology actually starting to heal. There is no way your neurology can heal WITHOUT noticable effects. This may continue for several months and might increase and change with methylfolate instead of folic acid and adding adb12 might modify it as well. TMG may also moderate it the effect some. MB12 has the unique characteristic of promoting neurological healing. This can affect everything neurological and neuropsychiatric including moods, personality, sensations and the like. Sensory hallucinations that are present with deficiency can clear within hours sometimes depending upon how severe the underlying damage is. The "dizzy and lightheaded" is a generally a good sign with taking mb12. It's on the road to healing based on the expoerience of many.