I've been looking for the right thread to make a post about my experiences with taking B complex and I think I'm going to choose this one.
I know it was very stupid of me, but I thought I would save money and time by buying the Kirkland B100 (Canada) vs buying the separate tablets and cutting them up. I took half a tab per day for 8 days while my dad took 1 tab per day for 2 days. We both ended up feeling very sick.
Each tablet contains 100mg of thiamine, riboflavin, niacin, pantothenic acid, pyridoxine, choline, and inositol, 100mcg of biotin and methylcobalamin and 1mg of folic acid. Way too much, I know. :'(
We started taking this 3 weeks ago. I felt nothing for 2 days, then noticed very mild finger tip numbness. A headache started by day 3 that increased in intensity as I continued to take the tablets. At some point, my lower right eyelid started twitching non-stop. I didn't figure it out until after the 8th dose. My dad has some underlying dental issues so it flared up his dental pain. It felt like as if our bodies had intense fire (the TCM kind) where it was causing gum and tooth nerve inflammation for my dad and dry eyes, mouth, and joint soreness for me. It also made us really irritable, angry, and slightly feverish. After stopping the B100, our symptoms continued for a week with little improvement.
My headache went away by the end of week 2, but came back less intense after I took a multivitamin with non-active ingredients. I tried some things that seemed to help, one of which was 250mg daily of B5, but what took away the headache and weird eye twitching that wouldn't stop was a 1mg capsule of METHYLfolate. I have also been regularly taking thiamine 200mg TID, magnesium, and riboflavin during and prior to this so I don't know if they had anything to do with my recovery.
My dad didn't want to take any of my vitamin suggestions so he self-treated with TCM herbal concoctions and Yinchiao tablets. His therapy made him feel better, but the pain still kept him up at night. He ended up getting a tooth extracted today.
I have a feeling that the pyridoxine gave me the finger tip numbness and the fake folate (folic acid) gave me the headache and "fire" inside my body. I learned my lesson and will never touch cheap high-dose vitamins again. It certainly didn't take too many doses to mess me up! Good luck everyone