POIS Compass

Trigger factor

Vitamin D & B vitamins

People say vitamin D, especially high doses, brought insomnia, low mood and worse symptoms; others blame niacin, B6, B12 (including injections) or B-complex for brain fog.

5 remarks

What people said5

Community self-reports only — not medical advice. Do not use any medication without a prescription.
  • “Whenever I had negative experiences with high dose vitamin d that worsened my insomnia I had worsened POIS”
  • “I tried high doses of vitamin d but i got messed up from pois, -depression for 3 days straight, could not socialize, mentally messed up.”
  • “Im also wondering if high doses vitamin D might cause insomnia for me.”
  • “Both. I have much more energy, but think less clearly and have a big tense in my head.”
  • “It gives me brainfog”