Seek medical attention right away if any of these SEVERE side effects occur when using Lithium:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; confusion; diarrhea; drowsiness; excessive weight gain; fainting; giddiness; inability to control the bladder or bowels; increased thirst; increased or decreased urination; involuntary twitching or muscle movements; loss of consciousness; loss of coordination; muscle weakness; persistent headache; persistent or severe nausea; ringing in the ears; seizures; slow or irregular heartbeat; slurred speech; swelling of the ankles or wrists; unsteadiness; vision changes; vomiting.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
Lithium Controlled-Release and Extended-Release Tablets

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Lithium Controlled-Release and Extended-Release Tablets:

Mild hand tremor; mild thirst; temporary, mild nausea and general discomfort at the beginning of treatment.

Seek medical attention right away if any of these SEVERE side effects occur when using Lithium Controlled-Release and Extended-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; confusion; diarrhea; drowsiness; excessive weight gain; fainting; giddiness; inability to control the bladder or bowels; increased thirst; increased or decreased urination; involuntary twitching or muscle movements; loss of consciousness; loss of coordination; muscle weakness; persistent headache; persistent or severe nausea; ringing in the ears; seizures; slow or irregular heartbeat; slurred speech; swelling of the ankles or wrists; unsteadiness; vision changes; vomiting.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
Lithium Syrup

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Lithium Syrup:

Mild hand tremor; mild thirst; temporary, mild nausea and general discomfort at the beginning of treatment.

Seek medical attention right away if any of these SEVERE side effects occur when using Lithium Syrup:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; confusion; diarrhea; drowsiness; excessive weight gain; fainting; giddiness; inability to control the bladder or bowels; increased thirst; increased or decreased urination; involuntary twitching or muscle movements; loss of consciousness; loss of coordination; muscle weakness; persistent headache; persistent or severe nausea; ringing in the ears; seizures; slow or irregular heartbeat; slurred speech; swelling of the ankles or wrists; unsteadiness; vision changes; vomiting.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.

Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.