Comprehensive medication guide to Lithium Carbonate including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
$0–$30 copay for generic lithium carbonate on most commercial insurance plans; typically covered as Tier 1 or Tier 2. Medicare Part D coverage varies by plan—some plans do not cover it, in which case a GoodRx coupon may cost less than out-of-pocket insurance pricing.
Estimated Cash Pricing
$30–$55 retail for generic lithium carbonate 300 mg tablets (30-day supply); as low as $7–$13 with GoodRx or SingleCare coupons. ER formulations (300 mg, 450 mg) range from $40–$55 retail, and as low as $5–$9 with discount coupons.
Medfinder Findability Score
82/100
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Lithium Carbonate is a mood-stabilizing medication used primarily to treat and prevent manic episodes in people with Bipolar I Disorder. It is one of the oldest and most studied psychiatric medications in existence, having received FDA approval in 1970 after decades of clinical use. It is also listed on the World Health Organization's List of Essential Medicines.
Lithium Carbonate is FDA-approved for the treatment of acute manic and mixed episodes of Bipolar I Disorder and for maintenance therapy to reduce the frequency and severity of future mood episodes in patients aged 7 and older. Off-label uses include augmenting antidepressants in treatment-resistant depression, managing bipolar disorder without a history of mania, and treating vascular headaches and neutropenia.
Lithium Carbonate is available in immediate-release tablets (300 mg), capsules (150 mg, 300 mg, 600 mg), extended-release tablets (300 mg as brand Lithobid; 450 mg generic ER), and as an oral solution (8 mEq/5 mL). It is not a controlled substance and can be prescribed by any licensed provider, including via telehealth in all 50 states.
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The exact mechanism of action of Lithium Carbonate as a mood stabilizer is not fully understood—the FDA-approved labeling explicitly states this. Lithium is an element (atomic number 3) that, when ingested as lithium carbonate, dissociates into lithium ions (Li⁺) that enter the brain. There it interacts with multiple biological systems simultaneously.
Current scientific understanding points to several mechanisms working together: lithium alters sodium transport in nerve cell membranes and shifts the metabolism of catecholamines (norepinephrine, dopamine); it enhances serotonin synthesis and release; and it inhibits GSK3-beta, an enzyme linked to mood regulation, neuroplasticity, and cell survival. Inhibiting GSK3-beta activates neuroprotective signaling pathways (the Akt/mTOR pathway), which may explain why long-term lithium users show greater brain gray matter volume than untreated patients with bipolar disorder.
What is clear is lithium's clinical effectiveness: it is one of the most evidence-based treatments in all of psychiatry, with more than 70 years of clinical evidence supporting its use for bipolar disorder. It also has a unique, well-documented anti-suicidal effect—reducing suicide rates approximately 9-fold—that is not replicated by any other mood stabilizer.
150 mg — capsule
Lowest strength; used for initiation in elderly or sensitive patients; less commonly stocked
300 mg — tablet
Most common dose and form; widely stocked at nearly all pharmacies
300 mg — capsule
Capsule form of the standard dose; available at most pharmacies
600 mg — capsule
Higher strength capsule for patients on larger total daily doses
300 mg ER — extended-release tablet
Brand Lithobid; extended-release for reduced GI side effects; once or twice daily dosing
450 mg ER — extended-release tablet
Generic ER tablet; less commonly stocked than 300 mg ER
8 mEq/5 mL — oral solution
Liquid form (lithium citrate solution) equivalent to 300 mg lithium carbonate per 5 mL; for patients unable to swallow pills
As of 2026, Lithium Carbonate is not on the FDA's Drug Shortages Database, and national supply from multiple generic manufacturers is stable. The standard 300 mg tablets and capsules are widely available at most pharmacies. Lithium Carbonate receives a findability score of 82/100—generally available with occasional localized stocking gaps for specific strengths.
Some patients still experience difficulty filling their prescription, particularly for less common formulations: the 150 mg capsule, 450 mg ER tablet, and oral solution are stocked at fewer pharmacies than the standard 300 mg tablet. Pharmacy-level variability—different wholesale supplier contracts, local demand patterns, temporary backorders—can cause localized gaps even when the medication is broadly available.
If you are having trouble finding Lithium Carbonate in stock at your local pharmacy, medfinder can help. You provide your medication name, dose, and location, and medfinder calls pharmacies near you to check which ones have it in stock—then texts you the results. This is particularly useful for patients on less common strengths who have already been turned away by one or two pharmacies.
Lithium Carbonate is not a controlled substance, so any licensed prescriber with full prescribing authority can order it. However, because lithium requires careful monitoring of serum levels, renal function, and thyroid function, and has a narrow therapeutic index, most patients benefit from working with a prescriber experienced in managing bipolar disorder. The following provider types regularly prescribe and manage lithium therapy:
Psychiatrists — most commonly initiate lithium therapy; best equipped to diagnose bipolar disorder and manage complex presentations
Psychiatric-Mental Health Nurse Practitioners (PMHNPs) — full prescribing authority in most states; specialize in psychiatric medication management
Primary Care Physicians — often co-manage stable long-term patients; may initiate based on psychiatry consultation
Internists — manage lithium in adult patients, often in areas with limited psychiatric access
Pediatricians / Child and Adolescent Psychiatrists — prescribe for patients aged 7 and older, with weight-based dosing
Physician Assistants (PAs) — with psychiatric supervision, PAs may prescribe and manage lithium
Lithium Carbonate can be prescribed via telehealth in all 50 states. Because it is not a controlled substance, there are no federal restrictions on telehealth prescribing. Telehealth psychiatry services including Talkiatry, Talkspace, Klarity, and others regularly prescribe lithium. Patients will still need to complete blood work (lithium levels, renal function, thyroid) at a local lab facility.
No. Lithium Carbonate is not a controlled substance and has no DEA scheduling. It can be prescribed by any licensed provider—including primary care physicians, psychiatrists, nurse practitioners, and physician assistants—without the special DEA registration requirements that apply to controlled substances like stimulants or benzodiazepines.
Because it is not controlled, Lithium Carbonate can be prescribed electronically or called into a pharmacy, refilled without restrictions, and prescribed via telehealth in all 50 states without the in-person visit requirements of the Ryan Haight Act (which applies only to controlled substances). There are no monthly fill limits based on DEA scheduling.
While not controlled, Lithium Carbonate does require careful medical oversight due to its narrow therapeutic index and the requirement for regular serum level monitoring. Prescribers typically require current lab results (lithium levels, renal function, thyroid function) before authorizing refills, which is a clinical—not regulatory—requirement.
These side effects are common, especially when starting therapy or after dose increases, and often improve with time:
Fine hand tremor
Increased thirst and urination (polyuria/polydipsia)
Nausea and diarrhea (reduced by taking with food)
Weight gain (modest, typically 5–10 lbs)
Cognitive dulling or mild memory difficulties
Hair thinning (may be related to thyroid changes)
Acne or psoriasis exacerbation
Lithium toxicity (worsening tremor, confusion, ataxia, seizures, coma, death — seek emergency care immediately)
Renal impairment (long-term use; monitored with regular creatinine and eGFR testing)
Hypothyroidism (develops in up to 40% of long-term users; monitored with TSH testing)
Hypercalcemia/hyperparathyroidism (monitored with annual serum calcium)
Serotonin syndrome (when combined with SSRIs, SNRIs, or MAOIs)
Cardiac arrhythmias (ECG changes, prolonged QT; Brugada syndrome risk)
Teratogenicity (risk of Ebstein's anomaly and other cardiac malformations in pregnancy; lowest effective dose recommended)
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Valproate/Divalproex Sodium (Depakote)
The most similar mood stabilizer to lithium; FDA-approved for acute mania and bipolar maintenance. First-line alternative for most patients not on lithium. Major caution: highly teratogenic—contraindicated in women of childbearing potential unless no alternatives exist.
Lamotrigine (Lamictal)
FDA-approved for bipolar I maintenance; particularly effective for preventing depressive episodes. Requires slow 8+ week titration to minimize Stevens-Johnson syndrome risk. Does not treat acute mania.
Quetiapine (Seroquel/Seroquel XR)
Atypical antipsychotic FDA-approved for bipolar mania, depression, and maintenance. Works for both phases but causes significant sedation and metabolic side effects (weight gain, diabetes risk).
Aripiprazole (Abilify)
Atypical antipsychotic FDA-approved for bipolar mania and maintenance (as adjunct). Favorable metabolic profile compared to other antipsychotics. Long-acting injectable available for adherence challenges.
Carbamazepine (Tegretol)
Anticonvulsant mood stabilizer; FDA-approved for acute mania. Significant drug interactions via CYP450 enzyme induction; less preferred than lithium or valproate for most patients.
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NSAIDs (ibuprofen, naproxen, celecoxib)
majorReduce renal lithium clearance; can raise lithium levels 30–50%. One of the most common causes of outpatient lithium toxicity. Avoid all NSAIDs unless specifically approved by prescriber. Use acetaminophen instead.
ACE Inhibitors (lisinopril, enalapril, ramipril)
majorReduce renal lithium clearance; significantly raise lithium levels and toxicity risk. Notify prescriber immediately if a new ACE inhibitor is prescribed.
Angiotensin Receptor Blockers / ARBs (losartan, valsartan)
majorSame mechanism as ACE inhibitors; raise lithium levels significantly. Close monitoring and likely dose adjustment required.
Thiazide diuretics (hydrochlorothiazide)
majorCause sodium excretion, leading to lithium retention. Lithium levels may increase 50–100%. Requires close monitoring and likely dose reduction.
SSRIs / SNRIs / MAOIs
majorCombined use increases risk of serotonin syndrome (agitation, fever, rapid heartbeat, tremor). Monitor closely when adding any serotonergic drug to lithium therapy.
Haloperidol
majorCase reports of encephalopathic syndrome with irreversible brain damage when combined with lithium. Use with extreme caution; monitor closely for neurological changes.
Metronidazole (Flagyl)
majorImpairs lithium clearance and raises lithium levels. Check lithium level within a week of starting metronidazole.
Carbamazepine / Phenytoin
moderateMay increase neurotoxicity at otherwise normal lithium levels. Report any new neurological symptoms.
Calcium channel blockers (verapamil, diltiazem)
moderateMay increase neurotoxicity risk when combined with lithium.
Iodide preparations
moderateConcurrent extended use with lithium may produce thyroid dysfunction.
Lithium Carbonate remains one of psychiatry's most important medications after more than 70 years of clinical use. It is the first-line treatment for Bipolar I Disorder maintenance in most clinical guidelines, the only mood stabilizer on the WHO's Essential Medicines List, and the only psychiatric medication with documented anti-suicidal effects. For patients who respond to it, lithium can be life-changing—and in some cases, life-saving.
Its challenges are real: it requires regular blood monitoring, has a narrow therapeutic index that makes drug interactions and dehydration clinically significant, and has long-term effects on kidney and thyroid function that require ongoing attention. But for patients on appropriate doses with regular monitoring, lithium is safe and highly effective for long-term bipolar management.
If you are on Lithium Carbonate and have trouble finding your specific strength or formulation at a local pharmacy, medfinder can help. Provide your medication name, dose, and location, and medfinder calls pharmacies in your area to find which ones have it in stock—then texts you the results.
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