Resources / Medication education
Lithium: old, unglamorous, unmatched
Lithium is a simple element that remains, seventy years on, the best-evidenced long-term treatment for bipolar disorder, and the only psychiatric medication with robust evidence for reducing suicide risk specifically. It demands respect and monitoring, and it repays both.
Medically reviewed by Shariq Refai, MD, MBA, FAPA, board certified psychiatrist · Published June 7, 2026 · Last reviewed June 8, 2026 · Editorial policy
Why it endures
What lithium does that nothing else quite does
Lithium prevents both manic and depressive episodes, with its strongest effect against mania, and large datasets associate it with reduced suicide attempts and deaths beyond what mood control alone explains, a distinction no other mood agent has earned so clearly. For classic bipolar I, episodic course with wellness between episodes, and family history of lithium response, it is frequently the single best choice available.
Its mechanisms are plural and still being mapped: neuroprotective signaling, circadian effects, and second-messenger modulation, a reminder that 'how does it work' and 'does it work' are different questions, and the second has seven decades of answers.
Monitoring
The deal you make with lithium
Lithium has a narrow therapeutic window, so it's dosed to blood levels, checked more often at the start, then typically every few months alongside kidney and thyroid function, which lithium can affect over years. Hydration matters: dehydration, certain blood pressure medications, and NSAIDs can raise levels. Signs of toxicity, coarse tremor, confusion, vomiting, unsteadiness, mean stop and call, today. None of this is hidden from you; it's the deal, stated up front, and thousands of people live full, stable lives inside it.
Day to day
Common effects and the long game
What people actually notice:
- A fine tremor, often dose-related and manageable
- Increased thirst and urination
- Possible weight gain, less than several alternatives
- Thyroid slowing in a minority over time, detectable on labs and treatable
- Kidney function watched over years, the reason monitoring never fully stops
Keep exploring
Related reading
Frequently asked questions
Good questions, clear answers
Is lithium dangerous?
It's safe inside its monitored window and dangerous outside it, which is exactly why levels are checked. Managed properly, decades-long use is common and well studied.
Will lithium flatten my personality?
At the right level, the goal is euthymia, you, between episodes, not sedation. Feeling dulled is a level-and-dose conversation, not a cost of admission.
How often are blood tests?
Frequently while finding your dose, then typically every three to six months for level, kidney, and thyroid, more often if something changes. We coordinate draws at a lab near you.
Why do I have to watch hydration and ibuprofen?
Both change how your kidneys handle lithium, raising levels without any dose change. Knowing the short interaction list is most of the safety battle.
Does lithium really reduce suicide risk?
The evidence consistently points that way, uniquely among mood medications, and for some patients that single property tips the decision. We weigh it openly with you.
Does lithium damage the kidneys?
Long-term use can slowly reduce kidney function in a minority of patients, which is precisely why kidney labs never stop and why levels are kept no higher than needed. Monitored properly, most people use lithium for decades without clinically meaningful kidney problems.
Can I take ibuprofen with lithium?
Carefully and rarely, NSAIDs raise lithium levels and are one of the few over-the-counter interactions that genuinely matter. Acetaminophen is the routine first choice instead; tell any clinician who treats you that you take lithium.
Is lithium used for depression without bipolar disorder?
Yes, as one of the best-evidenced augmentation strategies when antidepressants alone underdeliver in unipolar depression, typically at lower levels than bipolar treatment requires.
Questions about medication? That's what evaluations are for
Meet a board certified clinician by video, as clinician availability allows, and get answers specific to you. We prescribe responsibly and never prescribe controlled substances.
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