Depsonil

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Depsonil

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Depsonil

What is Depsonil? Defining the Imipramine Foundation

Property Description
Active ingredient Imipramine Hydrochloride
Form Tablet or capsule
Pharmacological class Tricyclic Antidepressant (TCA)
Common purpose Management of depressive illness
Origin Synthetic, dibenzazepine-derivative

Depsonil is the trade name for a prescription-only psychotropic medicine whose core component is the active ingredient Imipramine, a well-established synthetic compound. It is formally classified as a Tricyclic Antidepressant (TCA), positioning it within a foundational group of medicines used to support the management of certain mood disturbances and depressive illness. Imipramine is further distinguished as a tertiary amine TCA, a specific structural feature that differentiates its activity profile from related compounds.

Composition, Form, and Unique Recognition

Imipramine is often presented as Imipramine Hydrochloride for oral administration in the form of a tablet or capsule. It is recognized as the prototypical TCA compound, a status that is broadly acknowledged across pharmacological literature and supported by decades of clinical use. The compound's synthetic, dibenzazepine-derivative nature ensures its consistency. This established recognition confirms its place as a reliable compound for modulating mood, which is essential when addressing conditions like depressive illness.

High-Level Function: Targeting Serotonin and Norepinephrine

Imipramine functions primarily as a neuronal reuptake inhibitor, a mechanism that modulates the availability of natural brain messengers, known as neurotransmitters. This action specifically prevents the premature reabsorption of serotonin and norepinephrine, thereby increasing the functional concentration of these two key chemical substances in the synaptic space.

The compound's primary role in modulating these neurotransmitters facilitates improved neurotransmission. This established modulating effect on the brain's chemical balance is essential to its general purpose: alleviating symptoms associated with depressive illness and supporting emotional regulation. Tricyclic Antidepressants have an established therapeutic role in stabilizing neurotransmission for patients experiencing persistent mood disturbances.

Regulatory References

  1. Imipramine: MedlinePlus Drug Information
  2. Imipramine - StatPearls - NIH
  3. Tricyclic Antidepressants - StatPearls - NIH

What side effects are possible with Depsonil?

Possible Side Effects and Safety Information

The official safety profile for Depsonil (Imipramine) details adverse reactions by frequency and physiological system, based on government regulatory classifications. The safety data distinguishes between adverse events considered common and those that are rare but serious.

Adverse Reaction Classifications

Category Officially Documented Examples
Common Effects Dry mouth, blurred vision, constipation, dizziness, tremor, excessive sweating (hyperhidrosis), and orthostatic hypotension.
System-Organ Classes Effects involving the Nervous System (e.g., confusion, fatigue), Gastrointestinal System, Ocular System, and Cardiac/Vascular Systems.

Serious and Population-Specific Safety Statements

Regulatory documents highlight the risk of Serious Adverse Reactions, including the potential for severe cardiac arrhythmias and sudden cardiac death. A specific warning addresses the emergence or worsening of suicidal thinking and behavior, particularly in children, adolescents, and young adults during the initial months of therapy or following dose adjustments.

Safety notes also address specific patient populations. Older adults may have an increased official risk of experiencing confusion, delirium, and postural hypotension. Furthermore, the medicine is formally contraindicated for use during the acute recovery period following myocardial infarction and concurrently with Monoamine Oxidase Inhibitors (MAOIs), representing essential safety restrictions defined by regulatory authorities.

This framework ensures that potential risks are formally categorized and tied to specific contexts of exposure, adhering strictly to the safety profile established in official government labels.

Overdose and Emergency Response

Overdose and when to seek help

The regulatory description of Depsonil (Imipramine) overdose focuses on immediate, life-threatening toxicity, which dictates the need for urgent professional medical attention. An overdose is classified as potentially fatal, with cardiac dysrhythmia being the primary cause of severe outcome documented in official labeling.

Documented Overdose Manifestations

Officially documented signs of overdose center on the Central Nervous System (CNS) and Cardiovascular System. CNS effects include confusion, agitation, seizures, and progression to coma. Cardiac manifestations include arrhythmias, tachycardia (rapid heart rate), severe hypotension, and conduction abnormalities such as QRS prolongation. Other documented signs include dilated pupils (mydriasis) and vomiting.

Immediate Emergency Actions

The official guidance strictly mandates that an overdose, or even a suspected overdose, requires that individuals seek emergency medical attention immediately. All patients must be hospitalized and kept under close surveillance for management. Children are specifically noted as being more sensitive to acute overdosage, which is considered serious and potentially fatal in this population, necessitating prompt evaluation.

Official Management and Monitoring

Treatment for Imipramine overdose is described as symptomatic and supportive. No single specific antidote is known to reverse the effects. Procedural steps may include the use of activated charcoal and specific measures like sodium bicarbonate for managing documented cardiac toxicity. Regulatory requirements emphasize the necessity of continuous ECG monitoring in a hospital setting for several days, even after symptoms appear to stabilize.

Therapeutic Uses of Depsonil

What Depsonil Treats: Main Uses and Benefits

Depsonil's therapeutic role is established for managing symptoms across several domains. The therapeutic use of Imipramine is considered relevant for easing symptoms of depression and is applied in contexts where temporary symptomatic support for childhood enuresis is needed. This includes the relief of symptoms of depression and the reduction of enuresis (bed-wetting) in children generally aged six years and older.

This medication is applied in addressing conditions marked by heightened symptom clusters, including Major Depressive Disorder, certain severe panic attacks, and chronic neuropathic pain. It is commonly used in clinical scenarios where supportive symptom management is appropriate, relevant in clinical settings marked by heightened patient distress or when symptoms create noticeable functional strain. The medication provides support that helps ease the overall symptom burden in these situations.

“It is commonly used to help with symptomatic relief, which may assist with maintaining a sense of stability during periods of heightened psychological and physical discomfort.”

Quick Fact: Relief for Persistent Symptoms Depsonil is considered relevant for easing symptoms that are persistent (such as chronic nerve pain) or recurrent (such as major depressive episodes), contributing to improved comfort during symptomatic periods.

Regulatory References

  1. The FDA-approved labeling for Imipramine Hydrochloride

Eligibility and Restrictions for Use

Who Can and Cannot Use Depsonil? Official Regulatory Information

Official labeling defines population eligibility for Depsonil (Imipramine) based on age, physiological status, and concurrent conditions. The medicine is primarily contraindicated for several key groups.

Contraindicated Populations

Classification Who Must Not Use (Absolute Contraindications)
Concurrent Medications Patients receiving or recently receiving (within 14 days) a Monoamine Oxidase Inhibitor (MAOI) intended for psychiatric treatment.
Cardiovascular Status Patients in the acute recovery phase following a myocardial infarction (MI).
Sensitivity Patients with known hypersensitivity to imipramine or related dibenzazepine-derivative TCAs.

Age and Condition Eligibility

Use is established for adults with depressive illness. Children aged 6 years and older are eligible only for the treatment of nocturnal enuresis (bedwetting); safety and efficacy have not been established for children under 6 or for adolescents with depression. For older adults and patients with pre-existing conditions like severe liver disease (regional contraindication), kidney disease, or a history of cardiac arrhythmias, the medicine must be used with caution and monitoring.

Use is not recommended for pregnant women unless clearly necessary, and it is contraindicated for nursing mothers in many regulatory regions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Contraindicated Combinations and Timing Rules

The most critical restriction is the contraindication with Monoamine Oxidase Inhibitors (MAOIs), including linezolid and intravenous methylene blue. This combination is prohibited due to the risk of severe, potentially fatal adverse events. A mandatory washout period of two to three weeks must elapse when switching between Depsonil and an MAOI. The drug is also contraindicated during the acute recovery period following a myocardial infarction.

Pharmacokinetic and Pharmacodynamic Interactions

Imipramine’s official removal from the body involves the CYP2D6 enzyme. Medicines that inhibit this enzyme, such as certain antipsychotic agents or Cimetidine, can lead to higher-than-expected plasma concentrations of Imipramine. Conversely, strong enzyme inducers (e.g., Phenytoin or Barbiturates) may accelerate metabolism, causing lower drug exposure. Official documentation notes that individuals classified as CYP2D6 Poor Metabolizers or those with impaired hepatic function may have increased risk of exposure.

Co-administration with alcohol and other Central Nervous System (CNS) depressants may officially enhance the sedative effects. The drug may also potentiate the anticholinergic effects of other medicines. Furthermore, the antihypertensive action of adrenergic neurone blockers (e.g., Guanethidine) may be diminished or abolished by co-use. Regulatory summaries note that tobacco smoking can increase the drug's clearance.

Mechanism of Action

Enhancing Neurotransmitter Availability

Depsonil acts as an inhibitor of the reuptake process for the monoamine neurotransmitters, serotonin and norepinephrine. This mechanism blocks the transport proteins responsible for clearing these signaling molecules from the synaptic cleft, resulting in higher concentrations and prolonged activity of both neurotransmitters. This sustained presence leads to long-term functional changes within central nervous system pathways that influence mood regulation.


Modifying Receptor Activity

The drug simultaneously acts as an antagonist (blocker) on several non-monoamine receptors, including muscarinic acetylcholine ( M1), histamine ( H1), and alpha-1 (alpha1) adrenergic receptors. By occupying these receptor sites, Depsonil prevents their activation by endogenous signaling molecules. This action modulates autonomic and arousal systems, producing proximal physiological responses such as changes in the sleep-wake cycle and influence over smooth muscle tone in peripheral pathways.


Dual-Action Cascade

These two distinct mechanistic domains—reuptake inhibition and receptor antagonism—combine to shape the drug's overall spectrum of physiological effects by mediating both molecular and system-level consequences.

Dosage and Administration Information

How to Use Depsonil

Depsonil (imipramine) must be used strictly as directed by a healthcare professional. The instructions for use define the proper administration and dosing schedule based on established clinical practice.


Administration Instructions

Instruction Detail
Route of Administration Oral. The tablet must be swallowed whole with water.
Preparation Do not chew, crush, or divide the tablet.
Timing in Relation to Meals May be taken with or without food.
Frequency Pattern Typically taken once daily.

Established Dosing and Procedural Rules

The dosage of Depsonil is highly individualized and is determined and adjusted by the doctor. The instructions provide the following principles for use:

  • Dose Adherence: Take the exact daily dose prescribed by the doctor. Initial and maintenance doses vary, and adjustments may be made over time, especially for elderly patients or children (for certain uses).
  • Missed Dose: If a dose is missed, take it as soon as possible. However, if it is almost time for the next scheduled dose, skip the missed dose and return to the regular schedule. Do not double the dose to make up for the one missed.
  • Discontinuation: The medicine must not be stopped suddenly. Any dose reduction or cessation of treatment must be done gradually and only under the direct supervision of a healthcare provider.

This procedural structure ensures consistent medication levels by requiring strict adherence to the prescribed daily amount and timing, and prevents potential issues by mandating medical supervision for all dose changes or stopping the treatment.

Recent Clinical Evidence

Research evidence / Overview of Studies for Depsonil

Evidence for Use in Major Depressive Disorder

The research base for Depsonil (Imipramine) for Major Depressive Disorder (MDD) includes Randomized Controlled Trials (RCTs) and systematic reviews. These short-term trials were used in research exploring how symptoms change over time in adult populations (ages 18 to 65) for conditions characterized by fluctuating or episodic manifestations. Researchers primarily examined changes in the severity of depressive symptoms using standardized measurement tools.


Research explored patterns observed in the studies conducted during the acute treatment period, typically lasting a few months. Research examined changes measured in symptom scale scores and reported how these measurements evolved in groups receiving Imipramine compared to groups receiving an inactive substance (placebo). Systematic reviews and aggregated analyses of this evidence contribute to the broader evidence landscape by providing context on how TCA-class medicines were studied for MDD.


However, there are still areas where long-term effects are not fully established. Follow-up durations were often limited to the acute treatment phase or shortly thereafter. This means there is limited information for long-term outcomes regarding symptom patterns over extended periods of time. Furthermore, evidence quality varies across studies, and some regulatory assessments have noted that the certainty of the evidence remains low.

Evidence for Use in Childhood Enuresis

Research examined the use of Depsonil for nocturnal enuresis (bed-wetting), exploring changes in the frequency of episodes in children, usually those aged six years and older. These trials were evaluated in controlled studies and comparative clinical trials. Researchers monitored outcomes describing episodic or acute changes, specifically tracking the frequency of wet nights.


Research describes a pattern of symptom return (relapse) observed in the studies conducted when the medicine was eventually stopped. The evidence is also limited by the fact that many of the supporting studies are historical; therefore, certainty remains low in some systematic comparisons. The results apply only to the populations studied—children without underlying physical causes for their enuresis.

Key Studies & References

  1. Imipramine Hydrochloride Tablets: FDA-Approved Labeling and Patient Information
  2. Treatment of Major Depressive Disorder in Adults (NIH review covering TCAs)
  3. Pharmacological treatment of panic disorder: Systematic review of RCTs (Generic reference for panic disorder evidence structure)

Frequently Asked Questions (FAQ)

Common questions about Depsonil (FAQ)

Q: How does Depsonil differ from similar medications in its class?

Depsonil’s active ingredient, imipramine, is classified as a tertiary amine Tricyclic Antidepressant (TCA). Official pharmacological literature notes that this specific chemical structure helps define its activity profile, setting it apart from other types of TCAs in the same class, such as secondary amines.

Q: Can Depsonil affect a person's sleep patterns?

Official information indicates that Depsonil can cause changes to a person’s sleep-wake cycle by influencing certain brain pathways. Research has also examined the drug's effect on sleep stages, noting that it may delay the REM/nREM cycle and increase deep sleep.

Q: Are there specific food or drinks that should be avoided while taking Depsonil?

According to official administration instructions, Depsonil can be taken with or without food. However, regulatory documents warn that taking the drug with alcohol may officially enhance the sedative effects. No specific food restrictions are noted in the official product information beyond the effect of alcohol.

Q: Is Depsonil safe to take if I am also taking vitamins or herbal supplements?

Regulatory advice is clear that patients should inform their healthcare professional about all products being used. This includes prescription and over-the-counter medicines, as well as any vitamins, minerals, herbal products, and other supplements. This is done to support a review of potential interactions.

Q: Can Depsonil be taken by individuals over the age of 65?

The use of Depsonil is established for older adults, but regulatory information notes that it requires caution and monitoring. Older adults have an increased official risk of experiencing side effects such as confusion, delirium, and postural hypotension (a drop in blood pressure upon standing).

Q: Is Depsonil known to cause any long-term side effects?

Official regulatory documents emphasize that Depsonil must not be stopped suddenly, especially after long-term use. Abrupt cessation carries a risk of experiencing discontinuation symptoms, which may include flu-like symptoms and sleep problems.

Q: Are there any known issues with taking Depsonil and non-prescription pain relievers?

Regulatory safety information notes that caution is advised regarding non-prescription pain relievers. Specifically, co-administration with aspirin may potentially increase the blood levels of Depsonil or its side effects. Patients are routinely advised to inform their doctor about all over-the-counter medicines being taken.

Q: What kind of monitoring is recommended while taking Depsonil?

For certain high-risk groups, such as older adults and those with kidney or liver issues, regulatory information requires caution and monitoring. This monitoring may include testing the drug's serum concentrations (blood tests) to help assess medication levels.

Q: Is there a generic version of Depsonil available?

Yes. The active component of Depsonil, which is imipramine, is generally available as a lower-cost generic version.

Q: How long does Depsonil stay in your system after the last dose?

Regulatory guidance requires a mandatory washout period of two to three weeks before switching from Depsonil to a Monoamine Oxidase Inhibitor (MAOI). This required period provides a regulatory context for the drug's persistence and time required to clear the body.

Q: Does Depsonil cause weight gain for most users?

According to regulatory safety data, weight gain is listed as one of the commonly reported side effects associated with the use of Depsonil.

Q: What is the expected timeline for Depsonil to start having an effect?

For depression symptoms, full therapeutic benefits usually take 1 to 2 months to be experienced. While initial effects may occasionally be observed within 2 to 5 days, official patient information notes that the full, sustained benefit requires several weeks of treatment.

Q: Is it common for people to feel nauseous when they first start taking Depsonil?

Yes. Nausea is listed in regulatory documents as one of the more common side effects that can occur. Other gastrointestinal effects that are commonly reported include vomiting, diarrhea, and constipation.

Q: Is Depsonil considered a controlled substance?

No. Official drug classification information from regulatory agencies states that the active ingredient, imipramine, is Not a controlled medication. It is, however, only available by prescription from a licensed healthcare provider.

Q: What is the list of inactive ingredients in Depsonil tablets?

The official prescribing information lists the inactive ingredients used in Depsonil tablets. These commonly include items like lactose, magnesium stearate, microcrystalline cellulose, and titanium dioxide, among others. These substances are present to stabilize the tablet.

Q: How does Depsonil affect driving or operating machinery?

Regulatory warnings note that the drug's effects on the central nervous system (CNS) may potentially cause impairment. Due to these potential effects, caution is advised regarding a person's ability to drive or operate machinery safely while taking this medication.

Q: Is it possible to become dependent on Depsonil?

Official patient information notes that the medicine should not be stopped suddenly. This is done to avoid the risk of experiencing withdrawal symptoms and the potential return of the original symptoms (relapse) if treatment is discontinued abruptly.

Q: Why do some people report feeling restless after starting Depsonil?

Psychomotor restlessness, also known as akathisia, is reported in official documents as a symptom that may be experienced by adult and pediatric patients receiving antidepressants, including Depsonil. This effect may occur when the medicine is started or when the dose is adjusted.

Q: What should be done if an adverse reaction to Depsonil is suspected?

Regulatory agencies and health authorities instruct patients and healthcare professionals to report all suspected side effects (adverse drug reactions). This is an important step in collecting and reviewing safety information by the relevant national health authority.

Q: What are the most common reasons Depsonil is stopped?

Authoritative patient information suggests that the common reasons for treatment discontinuation include experiencing side effects, a desire to stop because the patient feels better, or issues related to trouble paying for the medication.

Q: Are there special considerations for taking Depsonil in hot weather?

The drug is associated with side effects such as excessive sweating (hyperhidrosis) and is also known to cause photosensitivity (increased sensitivity to sunlight). These factors suggest that individuals may need to consider sun exposure and overheating when in hot or sunny conditions.

Q: Does Depsonil interact with common contraceptive medications?

Yes. Regulatory interaction information indicates that certain contraceptive ingredients, such as ethinyl estradiol, may decrease the metabolism of tricyclic antidepressants like imipramine. This change could potentially increase the drug's side effects.

Q: Is anxiety an expected side effect of Depsonil?

Yes. Regulatory safety data lists anxiety among the changes in behavior or mood that can be new or become worsened. This effect is specifically noted to occur when treatment is started or when the dose is adjusted.

How should Depsonil be stored and disposed of?

Depsonil (imipramine hydrochloride) must be stored under specific environmental controls to maintain its stability and effectiveness. The medication should be kept at Controlled Room Temperature, defined as 20 C to 25 C (68 F to 77 F). Storage must protect the product from excessive heat and moisture.

Storage Requirement Condition
Temperature 20 C to 25 C
Protection Keep protected from light and moisture.
Container Must be kept in a tightly closed container.

The medication must always be stored out of the reach of children. For disposal, unused or expired Depsonil should be discarded using a drug take-back program. If a program is unavailable, mix the medicine with an undesirable substance and seal it in a container before throwing it into the household trash. The medication must not be flushed unless specifically instructed.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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