How Accurate Are Low-Dose Lithium Supplement Labels? ConsumerLab Tests Popular Products to Find Out

White Plains, NY, October 14, 2026 — Low-dose lithium supplements are promoted for boosting mood and brain health, but ConsumerLab’s recent tests show why it is important to know exactly how much lithium a product provides.

Key Findings:

• One product contained substantially more lithium than claimed: Nine out of ten low-dose lithium supplements passed ConsumerLab’s testing, but one product contained an additional 5.5 mg of lithium per capsule beyond its claimed amount. This is particularly concerning because supplemental lithium is generally taken in very small doses.

• More lithium is not necessarily better: Suggested daily doses of supplemental lithium generally range from about 0.3 mg to 5 mg, similar to or slightly above the average amounts obtained daily from food and drinking water. Many lithium supplements on the market provide more lithium than a person may want.

• Costs varied widely: Among tested products, the cost per serving, based on claimed amounts of lithium, ranged from 12 to 19 cents for 1 mg, 4 to 26 cents for 5 mg, and was 11 cents for 20 mg.

ConsumerLab’s Top Picks

Among products that passed ConsumerLab’s quality testing and were Approved, ConsumerLab selected three Top Pick low-dose lithium supplements based on quality and value, providing 1 or 5 milligrams of lithium for just 10 to 13 cents.

Access the Full Report:

The Low-Dose Lithium Supplements Review includes test results and comparisons for ten low-dose lithium supplements selected for testing by ConsumerLab: Double Wood Lithium Orotate, KAL Lithium Orotate, Life Extension Lithium, Nutricost Lithium Orotate, Pure Encapsulations Lithium (Orotate), Pure Encapsulations Lithium (Orotate), Solaray Lithium Aspartate, Swanson Lithium Orotate, Vitamatic Lithium Orotate, and Vitamatic Lithium Orotate.

ConsumerLab’s full Low-Dose Lithium Supplements Review can be accessed online by ConsumerLab.com members – currently over 100,000 individual subscribers and thousands more with access through libraries, schools, and medical centers.

As explained in the review, lithium is a mineral used in large doses (hundreds of milligrams) as prescription medication to treat bipolar disorder. Lithium is also sold at much lower doses (fractions of a milligram to a few milligrams) as a dietary supplement. The report reviews the evidence, mainly from observational studies and small clinical trials, that low-dose lithium may improve mood, reduce the risk of suicide, and reduce the risk and/or progression of dementia, including Alzheimer’s disease. The review also discusses the best way to choose a low-dose lithium supplement, what to look for on labels, and drug interactions and side effects with low-dose lithium supplements.

A video explaining ConsumerLab’s findings and offering expert tips for selecting and using low-dose lithium supplements is available for free.

Founded in 1999, ConsumerLab.com is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. It has tested and reviewed over 7,000 products and has published Product Reviews covering nearly every popular category of dietary supplements and health foods.

Membership to ConsumerLab.com is available online and provides immediate access to continually updated reviews of nearly every popular type of dietary supplement and health food, answers to reader questions, and product recalls and warnings. ConsumerLab also provides independent product testing through its voluntary Quality Certification Program. The company is privately held and based in New York. It has no ownership from, or interest in, companies that manufacture, distribute, or sell consumer products.

Low-Dose Lithium Supplements Review: 10 Popular Products Tested by ConsumerLab