Imipramine pamoate - oral
Imipramine pamoate - oral
Antidepressant medications are used to treat a variety of conditions, including depression and other mental/mood disorders. These medications can help prevent suicidal thoughts/attempts and provide other important benefits. However, studies have shown that a small number of people (especially people younger than 25) who take antidepressants for any condition may experience worsening depression, other mental/mood symptoms, or suicidal thoughts/attempts. Therefore, it is very important to talk with the doctor about the risks and benefits of antidepressant medication (especially for people younger than 25), even if treatment is not for a mental/mood condition.
Tell the doctor right away if you notice worsening depression/other psychiatric conditions, unusual behavior changes (including possible suicidal thoughts/attempts), or other mental/mood changes (including new/worsening anxiety, panic attacks, trouble sleeping, irritability, hostile/angry feelings, impulsive actions, severe restlessness, very rapid speech). Be especially watchful for these symptoms when a new antidepressant is started or when the dose is changed.
This medication is used to treat depression. Using this medication may improve your mood, sleep, appetite, and energy level and may help restore your interest in daily life. Imipramine pamoate belongs to a class of medications called tricyclic antidepressants. It works by restoring the balance of certain natural substances (neurotransmitters) in the brain.
This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This drug may also be used for anxiety and panic disorders.
Read the Medication Guide available from your pharmacist. Consult your doctor or pharmacist if you have any questions.
Take this medication by mouth with or without food, usually once daily at bedtime or as directed by your doctor. Dosage is based on your age, medical condition and response to therapy. To reduce your risk of side effects, your doctor may start you at a low dose and gradually increase your dose. Teenagers and elderly patients may need to start with other forms of imipramine (e.g., imipramine hydrochloride) to start at a dose that is low enough.
Follow your doctor's instructions carefully. Do not take more or less medication or take it more frequently than prescribed. Your condition will not improve any faster and your risk of side effects will increase. Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same time(s) each day.
Keep taking this medication even if you feel well. Do not suddenly stop taking this medication without consulting your doctor. Some conditions may become worse when the drug is abruptly stopped. Your dose may need to be gradually decreased.
When this drug is used for depression, it may take up to 3 weeks before you experience the full benefits.
Inform your doctor if your condition persists or worsens.
See also the Warning section. Dry mouth, blurred vision, headache, drowsiness, dizziness, constipation, nausea, vomiting, loss of appetite, diarrhea, stomach cramps, weight gain/loss, and increased sweating may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Tell your doctor right away if any of these unlikely but serious side effects occur:
Tell your doctor right away if any of these rare but very serious side effects occur:
This medication may increase serotonin and rarely cause a very serious condition called serotonin syndrome/toxicity. The risk increases if you are also taking other drugs that increase serotonin, so tell your doctor or pharmacist of all the drugs you take (see Drug Interactions section). Get medical help right away if you develop some of the following symptoms:
Get medical help right away if you have any very serious side effects, including:
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include:
In the US -
Before taking this medication, tell your doctor or pharmacist if you are allergic to it; or to other tricyclic antidepressants (such as desipramine, amitriptyline); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have a certain medical condition. Before using this medicine, consult your doctor or pharmacist if you have had:
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
Imipramine pamoate may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.
The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using imipramine pamoate, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions:
Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using imipramine pamoate safely.
Before having surgery, tell your doctor or dentist that you are taking this medication.
This drug may make you dizzy or drowsy or blur your vision. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
To decrease dizziness and lightheadedness, get up slowly when rising from a seated or lying position.
This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned or have skin blisters/redness.
If you have diabetes, this drug may make it harder to control your blood sugar. Check your blood sugar regularly as directed and share the results with your doctor. Tell your doctor right away if you have symptoms such as increased thirst/urination. Your doctor may need to adjust your diabetes medication, exercise program, or diet.
Older adults may be more sensitive to the side effects of this drug, especially dizziness (more likely when standing up), drowsiness, constipation, trouble urinating, mental/mood changes (such as confusion, agitation) and heart effects such as QT prolongation (see above). Dizziness, drowsiness, and confusion can increase the risk of falling.
Caution is advised when using this drug in children. (See also the Warning section.)
This medication should be used only when clearly needed during pregnancy. Infants born to mothers who have taken similar medications during pregnancy may have symptoms such as trouble urinating, prolonged sleepiness, shaking, and seizures. Discuss the risks and benefits with your doctor.
Since untreated mental/mood problems (such as depression, anxiety, panic disorders) can be a serious condition, do not stop taking this medication unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, immediately discuss with your doctor the benefits and risks of using this medication during pregnancy.
This medication passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
Some products that may interact with this drug include:
Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before and after treatment with this medication. Ask your doctor when to start or stop taking this medication.
The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/"ecstasy," St. John's wort, certain antidepressants (including SSRIs such as fluoxetine/paroxetine, SNRIs such as duloxetine/venlafaxine), among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs.
Other medications can affect the removal of imipramine pamoate from your body, which may affect how imipramine pamoate works. Examples include barbiturates (such as phenobarbital), cimetidine, cisapride, haloperidol, certain drugs for heart rhythm (such as flecainide, propafenone), halofantrine, certain HIV protease inhibitors (such as fosamprenavir), phenothiazines (such as thioridazine), pimozide, certain anti-seizure drugs (such as phenytoin), terbinafine, trazodone, among others.
Cigarette smoking decreases blood levels of this medication. Tell your doctor if you smoke or if you have recently stopped smoking.
Many drugs besides imipramine pamoate may affect the heart rhythm (QT prolongation), including amiodarone, dofetilide, pimozide, procainamide, quinidine, sotalol, macrolide antibiotics (such as erythromycin), sparfloxacin, among others. Therefore, before using imipramine pamoate, report all medications you are currently using to your doctor or pharmacist.
Tell your doctor or pharmacist if you are taking other products that cause drowsiness including alcohol, marijuana (cannabis), antihistamines (such as cetirizine, diphenhydramine), drugs for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), and opioid pain relievers (such as codeine, hydrocodone).
Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-containing ingredients or decongestants that could increase your heart rate or blood pressure. Ask your pharmacist about the safe use of those products.
Imipramine is very similar to desipramine. Do not take medications containing desipramine while using imipramine.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe dizziness, fast/irregular heartbeat, fainting, hallucinations, seizures.
Do not share this medication with others.
Laboratory and/or medical tests (e.g., blood counts, EKG, kidney function) may be performed regularly to monitor your progress or check for side effects. Consult your doctor for more details. Keep all medical appointments.
Store in a tightly closed container at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
Information last revised May 2020.
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