Lithium Orotate
Low-dose lithium salt sold for mood — minimal human evidence.
What is Lithium Orotate?
Lithium Orotate (Lithium orotate) is a sleep and mood supplement used for marketed for mood & irritability. NutriDex grades the human evidence as Preliminary. Lithium orotate is an over-the-counter salt that delivers tiny amounts of lithium — roughly 0.13–0.19 mg of elemental lithium per 5 mg tablet, a fraction of the ~150–900 mg of lithium carbonate used in psychiatry. It is sold for mood, irritability and sleep, but no randomized controlled trial has tested the orotate supplement at these doses for any outcome. The human record is one uncontrolled 1986 case series in 42 people with alcoholism (150 mg/day) and indirect evidence: ecological studies link trace lithium in drinking water to modestly lower suicide rates (pooled effect inverse but heterogeneous), and pharmaceutical-dose lithium trials in mild cognitive impairment and Alzheimer's show some biomarker and clinical signals. Claims that the orotate form uniquely floods the brain rest on a 1978 rodent study and are unproven in humans. At marketed doses harm is unlikely, but efficacy is essentially unestablished.
Purported Benefits
Evidence by outcome
The same supplement can be well-proven for one use and unproven for another — here is the human evidence graded outcome by outcome.
| Outcome | Evidence | Effect | Studies |
|---|---|---|---|
| Mood / irritability at marketed dosesNo RCT tests the orotate supplement; only a 1986 uncontrolled case series in alcoholism exists. | No Evidence | ↔ mixed | 1 |
| Suicide rate (trace dietary lithium)Ecological studies link trace water lithium to lower suicide, but observational only and heterogeneous. | Preliminary | ↑ benefit · small | 2 |
| Cognition in MCI (pharmaceutical-dose lithium)Low-dose lithium RCT lowered CSF p-tau in MCI, but used pharmaceutical lithium, not orotate at trace doses. | Preliminary | ↑ benefit · small | 1 |
| Agitation in Alzheimer's (pharmaceutical-dose lithium)Lit-AD RCT missed its agitation endpoint though global improvement favored lithium; not the orotate form. | Preliminary | ↔ mixed | 1 |