Lithium

What lithium actually is

Lithium is a mood stabilizer and one of the oldest and most studied treatments for bipolar disorder. It’s actually a natural element, a simple metal that, in medication form, helps even out the highs and lows of bipolar episodes. It can treat mania, help with bipolar depression, and lower the chance of future episodes when taken steadily over time.

Lithium also stands out for its long track record in reducing suicide risk among people with bipolar disorder, which is part of why it remains a cornerstone treatment despite newer options. It works differently from antidepressants and antipsychotics, and a prescriber decides whether it fits a person’s pattern of illness and overall health.

What to expect

Lithium works gradually. Some benefit can show during an acute episode, but the steadier, protective effect builds over weeks of consistent use. Because the helpful range and the unsafe range sit fairly close together, lithium needs regular blood tests to keep the level where it should be.

Those checks also keep an eye on the kidneys and thyroid, which lithium can affect over time. Staying well hydrated and steady with salt and fluids matters, since dehydration can push lithium levels up. This is very much a partnership with a prescriber. People should never raise, lower, or stop lithium on their own, and stopping suddenly can trigger a relapse. Any change goes through the prescriber.

What lithium isn’t

Lithium isn’t a sedative, and it isn’t meant to flatten a person’s personality. When it’s working, it tends to make moods steadier rather than blunted.

It also isn’t an old, outdated drug just because it’s been around a long time. Its long history is part of its strength. And it isn’t a set-it-and-forget-it medication. The monitoring is part of using it safely, not a sign that something’s wrong.

Related terms you’ll see next

• Mood stabilizer
• Bipolar disorder
• Antipsychotic
• Relapse

When to seek professional care

Anyone with bipolar disorder, or with mood swings that disrupt sleep, energy, and daily life, should work with a doctor or mental health professional to find the right treatment. A prescriber can decide whether lithium fits and handle the blood tests it needs. Signs of a high lithium level, like severe tremor, confusion, vomiting, or unsteadiness, need prompt medical attention. If a person has thoughts of harming themselves, get help right away by calling 911, or call or text 988 in the US to reach the Suicide and Crisis Lifeline.