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| FIELD OF APPLICATION | DETAILS |
|---|---|
| Generic Name | Nialamide |
| Active Ingredient | Nialamide |
| Brand Names | Delmoneurina, Niamid, Niamide, Nuredal, Surgex |
| Drug Category | Neurology |
| Drug Class | Palliative treatment, Immunosuppressive therapy, Targeted therapy |
| Dosage Forms | Not Available |
| Route of Administration | Not Available |
| FDA Approval Status | Withdrawn |
Nialamide: Overview
Nialamide is a non-selective monoamine oxidase inhibitor (MAOI) that was historically developed as an early antidepressant agent. Chemically related to iproniazid, it functions by blocking the oxidative breakdown of central neurotransmitters, thereby increasing monoamine availability in the nervous system. However, due to dangerous cardiovascular side effects and life-threatening interactions with tyramine-containing food products, the drug was withdrawn from clinical distribution in major global markets.
What Is Nialamide & How Does It Work?
Nialamide belongs to the class of organic compounds known as pyridinecarboxylic acids and derivatives, which consist of a pyridine ring bearing a carboxylic acid group or a derivative thereof. As an isonicotinic acid derivative, it falls structurally alongside early hydrazine-based central nervous system agents.
The primary mechanism of action of nialamide is the irreversible, non-selective inhibition of monoamine oxidase enzymes (including MAO-A and MAO-B). By inhibiting monoamine oxidase, nialamide prevents the metabolic degradation of key monoamine neurotransmitters, specifically serotonin, norepinephrine, and dopamine within the synaptic cleft. The resulting accumulation of these monoamines enhances central neurotransmission, mediating its historical antidepressive effects. However, non-selective MAO inhibition also prevents the liver and gastrointestinal tract from breaking down exogenous pressor amines, such as tyramine.
Is Nialamide FDA Approved?
Nialamide is not currently FDA approved for clinical use. It was historically approved in 1959 as a prescription antidepressant in the United States and internationally.
However, nialamide was officially withdrawn from the US, Canadian, and UK markets in 1963. The primary driver for its regulatory withdrawal was the discovery of severe interactions triggered by the concurrent consumption of foods containing tyrosine, alongside hepatotoxicity concerns.
What Is Nialamide Used For?
Historically, nialamide was indicated for psychiatric and neurological conditions before its severe toxicity profile prompted regulatory bans.
- Depressive Disorders: Prescribed as an early psychoanaleptic and antidepressant agent to treat severe clinical depression and major depressive episodes.
- Palliative Central Nervous System Management: Utilized historically as a central nervous system agent to manage various psychotropic and mood symptom.
Before Taking Nialamide: Contraindications & Precautions
Because nialamide has been permanently withdrawn from clinical practice due to life-threatening toxicity, it should never be administered. Understanding its historical precautions illustrates the extreme risks associated with non-selective hydrazine MAOIs.
Who Should Not Take Nialamide?
Nialamide is strictly contraindicated in all individuals due to its withdrawn regulatory status and severe safety hazards. Historically, it was contraindicated in patients with severe hepatic impairment, cardiovascular disease, hypertension, pheochromocytoma, or a history of cerebrovascular accidents.
Nialamide: Pregnancy & Fertility
The reproductive toxicity and teratogenic safety profile of nialamide have not been established under modern clinical guidelines. Given its potential to trigger acute vascular crises and cross biological membranes, its use during pregnancy or lactation is completely unsafe.
Tell Your Doctor Before Taking Nialamide
Patients should inform their physicians if they have ever been exposed to historical MAOI regimens or if they are taking modern serotonergic medications, as residual MAO inhibition can persist for weeks following drug cessation.
Nialamide: Dosage & Administration
Standardized clinical dosing protocols and administration routes for nialamide are no longer available in modern pharmaceutical reference literature.
Standard Nialamide Dosing
Standard therapeutic dosing regimens for nialamide are not available due to its complete withdrawal from commercial pharmaceutical markets in 1963.
How Nialamide Is Administered
Verified routes of administration and dosage forms are not available in contemporary prescribing databases. Historically, hydrazine MAOIs were formulated as oral tablets.
Nialamide: Clinical Efficacy & Research
In the mid-20th century, early clinical trials demonstrated that nialamide possessed potent antidepressive properties by inhibiting central monoamine oxidase and elevating synaptic monoamine levels. However, its therapeutic window proved dangerously narrow. Comparative research rapidly revealed that the clinical efficacy of early hydrazine MAOIs was heavily eclipsed by their tendency to cause severe hepatotoxicity, reduce seizure thresholds, and induce fatal hypertensive reactions when patients consumed dietary tyramine. As a consequence of these findings, modern psychiatric research replaced nialamide with safer, selective MAOIs, SSRIs, and SNRIs.
Nialamide: Side Effects & Safety Profile
This drug does not possess a modern FDA Black Box Warning because it was entirely withdrawn from commercial distribution long before the implementation of the standardized boxed warning system.
Nialamide is classified as a high-risk, hepatotoxic agent capable of producing severe cardiovascular and central nervous system adverse events.
Common Nialamide Side Effects
Historical literature documents common side effects including postural hypotension, dizziness, dry mouth, constipation, insomnia, muscle tremors, and gastrointestinal upset.
Serious Nialamide Adverse Events
Documented serious adverse events include catastrophic hypertensive crises, subarachnoid hemorrhages, intracranial bleeding, severe drug-induced liver injury (DILI), hyperpyrexia, and fatal Serotonin Syndrome.
Managing Nialamide Side Effects
If accidental exposure to an obsolete MAOI occurs, immediate emergency intervention is required. Hypertensive crises must be managed with rapid-acting intravenous vasodilators (such as phentolamine or nitroprusside), alongside strict monitoring of cardiac and neurological status.
Nialamide: Interactions & What to Avoid
Nialamide features an exceptionally hazardous interaction profile, involving both extensive food-drug interactions and life-threatening drug-drug contraindications.
Nialamide: Interactions
Co-administering nialamide with serotonergic drugs (such as SSRIs, SNRIs, tricyclic antidepressants, or tramadol) drastically increases the risk of fatal Serotonin Syndrome. Combining it with sympathomimetic agents (like decongestants, amphetamines, or epinephrine) causes acute hypertensive surges. Furthermore, nialamide interacts dangerously with central nervous system depressants, sedatives, and other enzyme-inhibiting drugs.
Nialamide: Food & Alcohol
Nialamide reacts catastrophically with food products containing high levels of tyramine or tyrosine, including aged cheeses, cured meats, red wine, draft beer, soy sauce, and yeast extracts. Ingesting tyramine while monoamine oxidase is inhibited causes massive systemic norepinephrine release, precipitating a lethal hypertensive crisis.
Nialamide: Missed Dose, Overdose & Storage
Due to the lack of active pharmaceutical formulations, standard consumer storage and missed-dose guidelines are not applicable.
Missed Dose of Nialamide
Not applicable, as there are no active, authorized dosing schedules available for this withdrawn compound.
Nialamide: Overdose & Emergency
Nialamide overdose is a critical medical emergency characterized by severe agitation, hallucinations, hyperreflexia, high fever, extreme hypertension followed by cardiovascular collapse, and deep coma. Emergency treatment requires immediate intensive care, gastric decontamination, aggressive cooling for hyperpyrexia, and parenteral blood pressure stabilization.
How to Store Nialamide
Commercial preparations of nialamide are no longer distributed. Any chemical reference standards should be stored in securely sealed, light-resistant containers according to hazardous chemical storage protocols.
Nialamide: Patient Management & Monitoring
Because nialamide is a withdrawn compound, patient management focuses on ensuring patients do not receive obsolete or unapproved MAOI therapies.
Tests Before Starting Nialamide
No baseline clinical tests are applicable, as administration of this withdrawn chemical is not approved.
Monitoring During Nialamide Treatment
Not applicable for active therapy. In cases of accidental toxicity or historical exposure, intensive monitoring of blood pressure, hepatic enzyme panels, and neurological function is required.
Nialamide: Do’s and Don’ts
- Do rely exclusively on modern, FDA-approved antidepressants prescribed by a licensed psychiatrist.
- Don’t consume obsolete, unapproved, or non-prescription MAOI chemical compounds under any circumstances.
Frequently Asked Questions
What is Nialamide?
Nialamide is an early non-selective monoamine oxidase inhibitor (MAOI) that was historically used as an antidepressant.
Why was Nialamide withdrawn from the market?
It was withdrawn from the US, Canadian, and UK markets in 1963 due to dangerous interactions with food products containing tyrosine and risks of severe hepatotoxicity.
How does Nialamide work in the brain?
It irreversibly inhibits the monoamine oxidase enzyme, blocking the breakdown of key neurotransmitters to elevate mood.
Does Nialamide have an FDA Black Box Warning?
No, it does not have a modern FDA Black Box Warning because it was withdrawn in 1963 before the boxed warning system was introduced.
Are there any approved dosage forms available for Nialamide today?
No, there are no approved dosage forms or routes of administration available for nialamide in modern clinical practice.
Can Nialamide cause Serotonin Syndrome?
Yes, combining nialamide with serotonergic medications can cause fatal Serotonin Syndrome due to excessive central serotonin accumulation.
References
- DrugBank Online. Nialamide (DB04820).
- National Center for Biotechnology Information (NCBI). PubChem Compound Summary: Nialamide.
Legal Disclaimer
The information provided is for educational and informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider at any hospital or any local clinic before starting or stopping any medication.
