“Potassium Sleep Experiments”, 2012-12-21 (; backlinks):
2 self-experiments on potassium citrate effects on sleep: harm to sleep when taken daily or in the morning
Potassium and magnesium are minerals that many Americans are deficient in. I tried using potassium citrate and immediately noticed difficulty sleeping. A short randomized (but not blinded) self-experiment of ~4g potassium taken throughout the day confirmed large negative effects on my sleep. A longer followup randomized and blinded self-experiment used standardized doses taken once a day early in the morning, and also found some harm to sleep, and I discontinued potassium use entirely.