Lithium Carbonate Er
Lithium Carbonate ER 300MG
What is Lithium Carbonate Er?
Lithobid is used to treat the manic episodes of bipolar disorder. The generic version of Lithobid is lithium carbonate. The cost for 100, 300 mg Lithobid oral tablets, extended release 300 mg is around $1,118. Get savings of up to 80% when you use our free prescription coupon card at any participating pharmacy near you.Side Effects
- Unusual tiredness or weakness
- Fast, pounding, or uneven heartbeat
- Diarrhea, vomiting, tremors, or drowsiness
Warnings
- It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant.
- Tell your doctor if you have kidney problems, heart or blood vessel disease (including Brugada syndrome), brain or nerve problems, or thyroid problems.
- This medicine may cause the following problems:Lithium toxicityHeart problemsKidney problemsBrain problems (including encephalopathic syndrome, pseudotumor cerebri)Serotonin syndrome (when used with certain medicines)
- Make sure any doctor or dentist who treats you knows that you are using this medicine.
- This medicine may make you dizzy or drowsy. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
Prescription savings · · · ·
What is Lithium Carbonate Er ?
Lithobid is used to treat the manic episodes of bipolar disorder. The generic version of Lithobid is lithium carbonate. The cost for 100, 300 mg Lithobid oral tablets, extended release 300 mg is around $1,118. Get savings of up to 80% when you use our free prescription coupon card at any participating pharmacy near you.- Unusual tiredness or weakness
- Fast, pounding, or uneven heartbeat
- Diarrhea, vomiting, tremors, or drowsiness
- Fever
- Confusion, problems with walking or balance, muscle movements you cannot control
- Lightheadedness or fainting
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Change in how much or how often you urinate
- It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant.
- Tell your doctor if you have kidney problems, heart or blood vessel disease (including Brugada syndrome), brain or nerve problems, or thyroid problems.
- This medicine may cause the following problems:Lithium toxicityHeart problemsKidney problemsBrain problems (including encephalopathic syndrome, pseudotumor cerebri)Serotonin syndrome (when used with certain medicines)
- Make sure any doctor or dentist who treats you knows that you are using this medicine.
- This medicine may make you dizzy or drowsy. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
- Maintain adequate fluid intake, salt intake, and a normal diet, especially during the stabilization period.
- Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
- Keep all medicine out of the reach of children. Never share your medicine with anyone.
Lithium Carbonate Er Coupons & Prices
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Looking for a lithium carbonate ER coupon? Lithium carbonate extended-release is an inexpensive generic mood stabilizer, but the cash price at the pharmacy counter can vary widely from one location to the next. With a free Rx.com discount coupon you can compare prices across more than 60,000 pharmacies near you and lock in a low cash price whether or not you use insurance. Enter your ZIP above to see today's price at pharmacies in your area.
What is lithium carbonate ER and how does it work?
Lithium carbonate is a lithium salt classified as an antimanic agent, or mood stabilizer. It is FDA-approved to treat manic episodes of bipolar disorder and as maintenance therapy to help prevent or reduce the frequency and intensity of manic episodes. The extended-release (ER) tablet releases the medicine slowly over time, so it can be dosed less often and produces smoother, steadier lithium levels in the blood than immediate-release lithium.
Lithium carbonate ER is the generic form of the brand Lithobid. (An older brand, Eskalith CR, has been discontinued.) Doctors sometimes also use lithium off-label to boost antidepressants in hard-to-treat depression, but you should only take it for the condition your prescriber has recommended.
How much does lithium carbonate ER cost without insurance?
As a long-established generic, lithium carbonate ER is one of the lower-cost mood stabilizers, and many people pay less with a free discount coupon than they would through insurance. The catch is that cash prices are not fixed. The same tablet can cost noticeably more at one pharmacy than at another down the street, which is exactly why comparing before you fill matters.
Rx.com compares prices across more than 60,000 pharmacies so you can find the lowest cash price near you. Our coupon is free to use, requires no membership, and works whether or not you have insurance. Enter your ZIP above to see today's price and print, text, or show the coupon at the counter.
Alternatives and related medications
Lithium is one of several options used to stabilize mood in bipolar disorder, and the right choice depends on your history and how you respond. If cost or tolerability is a concern, it can help to compare prices on related medicines your prescriber may consider:
- Lithium (immediate-release lithium carbonate)
- Lithobid (brand-name extended-release lithium)
- Lamotrigine (a mood stabilizer)
- Divalproex sodium (a mood stabilizer)
- Quetiapine (an atypical antipsychotic used in bipolar disorder)
Do not switch or stop any of these on your own. Use this list to talk with your prescriber, and compare cash prices on each with a free Rx.com coupon.
Important safety information
Lithium carries a boxed warning: lithium toxicity is closely tied to the level of lithium in your blood and can occur at doses close to the therapeutic range. Because of this, regular blood tests to check your lithium level are required, and treatment should only be started where prompt, accurate level testing is available. Early signs of toxicity can include diarrhea, vomiting, drowsiness, muscle weakness, tremor, and loss of coordination; more severe toxicity can cause unsteady walking, confusion, seizures, coma, and death. Seek medical care right away if these appear.
Take the extended-release tablets whole and never crush, chew, or split them, since that can release too much medicine at once. Stay well hydrated and keep your salt (sodium) intake steady, because dehydration, low sodium, and certain medicines, including NSAID pain relievers, ACE inhibitors and ARBs, and thiazide water pills, can raise lithium levels. Other risks include effects on the kidneys, thyroid (underactive thyroid or goiter), calcium levels, and heart rhythm. Lithium can harm a developing baby, including an increased risk of fetal heart defects, so tell your provider if you are pregnant, may become pregnant, or are breastfeeding. This is general information, not medical advice; talk with your prescriber or pharmacist about your specific situation.
This Lithium Carbonate Er information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.
Verify the official label: Lithium Carbonate Er on DailyMed (FDA)
Reviewed against FDA labeling · Last reviewed July 2026
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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.