Solidon

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Medically reviewed

Marina Burgos

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 Solidon

Property Description
Active Ingredient Chlorpromazine (CPZ)
Pharmacological Class First-Generation Antipsychotic (Neuroleptic)
Origin Synthetic (Phenothiazine derivative)
Primary Form Tablet, Oral Solution, Injectable Solution
General Purpose Chemical signal balancing, calming, antiemetic action

Solidon is a medication containing the active ingredient Chlorpromazine (CPZ), a synthetic compound classified as a First-Generation Antipsychotic (FGA) or Neuroleptic medication. Chemically derived from the phenothiazine structure, this class is known for its powerful central nervous system effects. Clinically, this compound is globally recognized as a core medication for stabilizing severe neurological conditions. This medicine has an established function in helping to quiet electrical and chemical activity in the central nervous system.


Composition and Physical Forms

The active substance in Solidon is Chlorpromazine, a single-ingredient product combined with standard inert excipients or pharmaceutical vehicles. To ensure flexible patient care, the medication is available in multiple preparations for various administration routes. These forms commonly include the solid-dose tablet (often film-coated), an oral solution such as a concentrate or syrup, and a liquid injectable solution for parenteral delivery. This variety in forms allows for effective administration even during acute episodes or when oral intake is compromised.


General Purpose and Mechanism Summary

The general purpose of this medication is to achieve chemical signal balancing by modulating neurotransmitters. Specifically, it exerts its primary effect as a dopamine D2 receptor antagonist. This mechanism helps to chemically quiet overactive brain signaling, providing a robust calming effect designed to stabilize extreme behavioral responses. Beyond its psychotropic role, this chemical profile confers a distinct auxiliary benefit: it is frequently employed for controlling severe, difficult-to-manage nausea and vomiting. The medication provides dual therapeutic utility in managing both neurological stabilization and severe gastrointestinal distress.

Regulatory References

  1. Chlorpromazine: MedlinePlus Drug Information

What side effects are possible with Solidon?

Possible side effects and safety information

The safety profile of Solidon, which contains Chlorpromazine, is officially documented by regulatory authorities (EMA/FDA) and centers on effects primarily targeting the nervous and cardiovascular systems. These adverse reactions are formally classified by frequency, allowing for a distinction between expected effects and rare, serious risks.

Adverse Reaction Frequency Classification

Frequency Examples of Officially Listed Effects
Very Common (ge1/10) Sedation, dizziness, increased weight.
Common (ge1/100) Prolonged QT interval (ECG change), impaired glucose tolerance.
Rare (ge1/10,000) Agranulocytosis (severe reduction in white blood cells), obstructive jaundice.

Serious Adverse Reactions and Safety Constraints

The regulatory label highlights several serious, but less common, adverse reactions. These include Neuroleptic Malignant Syndrome (NMS), a potentially fatal condition characterized by high fever and muscle rigidity, and Tardive Dyskinesia (TD), a disorder involving involuntary movements, typically associated with long-term use. Safety constraints also note that the medication can affect body temperature regulation and suppress the cough reflex.

Cardiovascular risks include orthostatic hypotension (low blood pressure upon standing), which is most common at the start of treatment, and the risk of sudden cardiac death associated with arrhythmias like Torsade de pointes, linked to QT prolongation.

Population-Specific Safety Notes

Official prescribing information contains specific safety statements for certain groups. In older adults being treated for dementia-related psychosis, there is a documented increased risk of death (FDA Boxed Warning). Neonates exposed during the third trimester of pregnancy are at risk for extrapyramidal or withdrawal symptoms following delivery.

Overdose and Emergency Response

Overdose and When to Seek Help

The official overdose profile for Solidon (Chlorpromazine) is defined by severe, acute effects on the central nervous system and the heart, which require immediate emergency intervention.

Documented Manifestations

Overdose manifestations may progress from drowsiness, confusion, and agitation to profound Central Nervous System (CNS) depression and coma. Officially documented neurological signs include seizures (convulsions), hyperreflexia, and motor tics such as dystonia.

The most severe outcomes are linked to the cardiovascular system, including significant hypotension (low blood pressure), tachycardia (rapid heartbeat), and potentially life-threatening cardiac dysrhythmias. The risk of respiratory depression is also noted in regulatory documentation.

Required Management and Emergency Action

Because there is no specific antidote available, management is restricted to continuous symptomatic and supportive treatment within a hospital setting. This includes monitoring of vital signs and the Electrocardiogram (ECG). Adrenaline (epinephrine) is specifically avoided for treating hypotension in this context, as stated in regulatory documents.

Immediate medical help must be sought if an overdose is suspected. Government guidance strictly requires individuals to immediately call emergency services if the affected person has collapsed, is having a seizure, or cannot be awakened.

Therapeutic Uses of Solidon

Solidon may be part of symptomatic management across several clinical contexts. It may be part of supportive therapy for conditions characterized by periods of heightened symptoms, primarily managing severe psychosis, the acute manic phase of bipolar disorder, and severe behavioral problems in children. This application is relevant when additional symptomatic support is needed to address pronounced manifestations such as hallucinations and delusions, contributing to a more manageable experience of acute episodes.

It is also applied in scenarios where additional management of discomfort is required for specific, non-psychiatric issues. Indications include managing severe nausea and vomiting, intractable hiccups (persistent singultus), and assisting with apprehension prior to surgery. This supportive application may help ease the overall symptom burden.

“In clinical contexts, the medication is applied to help ease the overall symptom burden during periods of acute distress.”


Quick Fact: Relief for Refractory Physical Symptoms Solidon may assist in easing distress when symptoms relate to systemic imbalance, such as intractable hiccups or severe vomiting, when symptoms interfere with routine activities.

Regulatory References

  1. NIH MedlinePlus overview of Chlorpromazine uses

Eligibility and Restrictions for Use

Official Population Eligibility for Solidon (Chlorpromazine)

Regulatory agencies define specific population criteria for the use of Solidon, categorizing individuals into permitted, restricted, and contraindicated groups. All eligibility information is based strictly on government-approved labeling.

Population Status Eligibility Rules
Use is Permitted Use is established in adults and adolescents for labeled indications. Pediatric use is permitted for specific conditions in children aged 1 to 12 years and for nausea/vomiting in those geq 6 months.
Use is Contraindicated The medicine is prohibited for patients with known phenothiazine hypersensitivity, those in comatose states or severe CNS depression, and individuals with a history of blood dyscrasias, bone marrow depression, or Phaeochromocytoma.
Use is Restricted/Not Approved The medicine is not approved for elderly patients with dementia-related psychosis due to the documented increased risk of death. Use is generally not recommended for infants under 6 months (safety not established) or during pregnancy/lactation (requires risk-benefit assessment).
Conditional Use Use requires extreme caution and monitoring in patients with severe hepatic or renal impairment, epilepsy (due to lowered seizure threshold), and specific cardiovascular diseases or conditions like glaucoma or prostatic hypertrophy.

What should I know about interactions with other medicines?

Solidon, an antidepressant in the class of selective serotonin reuptake inhibitors (SSRIs), may interact with numerous other medicines, potentially altering the effect of Solidon or the co-administered drug. It is essential to inform a healthcare provider of all prescription and non-prescription medications, herbal supplements, and vitamins currently being taken.

Increased Risk of Serotonin Syndrome

Combining Solidon with other medications that increase serotonin levels significantly raises the risk of serotonin syndrome, a potentially serious condition. These interacting substances include, but are not limited to, other antidepressants (such as MAOIs, TCAs, and SNRIs), triptan medications for migraine, fentanyl, tramadol, dextromethorphan (found in many cough/cold products), and the herbal supplement St. John's wort.

Interaction Risk Category Examples of Interacting Medicines
Increased Bleeding Risk Nonsteroidal Anti-Inflammatory Drugs (NSAIDs, e.g., ibuprofen, naproxen), aspirin, and warfarin (other blood thinners).
Altered Solidon Metabolism Drugs that inhibit certain liver enzymes (CYP2D6, CYP3A4), such as some antifungal and HIV medications, may increase Solidon blood levels. Conversely, enzyme inducers (e.g., rifampin, carbamazepine) may decrease its effectiveness.

Solidon may also increase the effect of certain antipsychotics and tricyclic antidepressants. Concurrent use of alcohol is not recommended as it may worsen central nervous system side effects like dizziness and drowsiness. Patients should be monitored closely when combining Solidon with drugs that affect the central nervous system.

Mechanism of Action

Modulation of Receptor-Mediated Signaling

Solidon's mechanism begins by acting within domains that utilize receptor-mediated signaling. It functions as a selective modulator of a specific receptor class, initiating a sequence that modifies early molecular steps in the cellular response. This interaction results in modulating activity of overactive physiological pathways by adjusting the cell's immediate reaction to specific endogenous mediators.

Regulation of Key Pathway Activity

Solidon engages regulatory mechanisms that actively govern dysregulated processes within critical cellular signaling cascades. Through this engagement, the drug regulates processes driven by distinct signaling patterns, consequently decreasing the magnitude of mediator activity in the affected biological systems.

Influence on Systemic Feedback Loops

The molecule modifies specific signaling sequences that lead to crucial downstream effects. It influences feedback regulation within pathways relevant in cascades where multiple layers of pathway activation occur. This intervention promotes physiological adjustments that induce a shift toward regulated pathway activity within the targeted biological systems.

Dosage and Administration Information

How Solidon is Used: Official Administration Guidelines

Solidon (Chlorpromazine) administration is based on specific, officially defined routes and regimens detailed in regulatory prescribing information. The medication is primarily available for Oral (PO) use as tablets or an oral solution for routine treatment and maintenance. For acute, severe conditions, the drug may be administered via Intramuscular (IM) injection, or in restricted cases, a slow, diluted Intravenous (IV) injection. Subcutaneous administration is not an approved route.


Dosing and Frequency

The dosage protocol for Solidon requires starting with a low initial dose (e.g., 10 mg to 25 mg oral) and involves gradual adjustment (titration) until the lowest effective maintenance dosage is reached, often stabilizing in the range of 400 mg to 800 mg total daily dose. Maintenance dosing is typically taken in divided doses throughout the day (e.g., three or four times daily). Parenteral doses are often 25 mg IM and may be repeated every three to four hours for acute symptom control, as needed.


Administration Specifics and Patient Groups

Injectable administration has distinct requirements: IV solutions must be diluted to a concentration not exceeding 1 mg/mL using 0.9% sodium chloride, and injections must be given slowly and deeply into a large muscle mass. Patients who receive an IM or IV dose are officially instructed to remain lying down for at least 30 minutes following administration. Older adults require lower starting doses, and the titration process must be managed more gradually, while pediatric dosages are typically calculated based on body weight.

Recent Clinical Evidence

Evidence for Use in Severe Psychosis

The research on Solidon for conditions characterized by periods of heightened symptoms like severe psychosis, including schizophrenia, draws from a large body of clinical history and numerous early Randomized Controlled Trials (RCTs). These studies were used in research exploring how symptoms change over time, often comparing the study drug to a placebo or to other first-generation agents. Researchers explored outcomes related to episodic or acute changes, such as the severity of symptoms like hallucinations and delusions, which are conditions marked by functional limitations. What the studies reported is that the findings describe patterns observed in the studies regarding the quieting of acute psychotic symptoms.


Evidence for Use in Acute Episodes and Behavioral Stabilization

Solidon was studied for episodes where symptoms become more noticeable, particularly in the acute manic phase of bipolar disorder, with research monitoring the rate of symptom evolution during the acute period. The medication was also evaluated in studies for severe behavioral problems in children. The sample sizes were modest in pediatric studies, and the findings were mixed due to the heterogeneous nature of the underlying conditions.


Evidence for Specialized Symptom Management

For specialized uses like severe nausea and vomiting and intractable hiccups, research explored temporary physiological imbalance. Acute RCTs examined the cessation of vomiting episodes, while the evidence for hiccups is primarily derived from case reports and small case series due to the symptom's rarity.


Long-Term Research and Evidence Gaps

Research has explored the use of Solidon over defined time intervals to monitor for relapse in chronic conditions. However, long-term effects are not fully established across all indications. The evidence is limited in providing a comprehensive view of long-term functional and cognitive outcomes beyond the change in measured symptoms. A key gap is the need for more comparative research against the newest drugs, as much of the foundational evidence is decades old. Data for certain patient groups remain insufficient.

Key Studies & References Comparison of Combination Olanzapine+Lithium or Chlorpromazine+Lithium in Treatment of First Manic Episode...

Frequently Asked Questions (FAQ)

Common questions about Solidon (FAQ)


Q: What is the main reason doctors prescribe Solidon?

According to official documents, the medication is prescribed to manage the acute manifestations of psychotic disorders, such as schizophrenia. It is also approved for controlling severe, difficult-to-manage nausea and vomiting. Additionally, this medication is used for treating specific conditions like intractable hiccups.


Q: What should I know about taking Solidon with vitamins or supplements?

Official drug information emphasizes that all prescription and non-prescription medicines, including vitamins and supplements, should be discussed with a healthcare provider. This is because these substances carry a risk of interaction with Solidon, and the provider can assess the possibility of altered effects on the medication.


Q: Is Solidon safe for use in older adults (seniors)?

Official regulatory information specifies that older adults generally require a lower starting dosage and need close observation. However, the medicine is not approved for use in elderly patients who have dementia-related psychosis, which is an important safety restriction documented in the official prescribing information.


Q: Are there warnings about driving or operating machinery while taking Solidon?

Yes, official warnings state that Solidon may impair mental and physical abilities, particularly when treatment is first initiated. Due to this potential effect, patients are cautioned against performing activities that require full mental alertness, such as driving or operating heavy machinery.


Q: What are the main things I should discuss with my healthcare provider before starting Solidon?

Regulatory documents highlight the importance of discussing any history of certain conditions before starting Solidon, including blood disorders, severe liver or heart conditions, epilepsy, or glaucoma. Regulatory documents also indicate that all current prescription medicines and supplements should be discussed with the provider to manage potential interactions.


Q: Is Solidon known to cause skin rashes or allergic reactions?

Solidon is contraindicated (prohibited) for patients with a known hypersensitivity, which is a type of allergic reaction, to phenothiazine compounds. Allergic-type skin reactions have been reported as less common side effects. Patients are also warned about severe sunburn, as the medicine can increase sun sensitivity.


Q: Do I need to get blood tests done while I am taking Solidon?

Official drug information indicates that routine monitoring of blood components may be necessary. This is due to the rare risk of a serious side effect called agranulocytosis (a severe reduction in white blood cells). Liver function tests may also be required, depending on the patient’s condition.


Q: Can people who are allergic to certain dyes or fillers take Solidon?

The medicine is contraindicated for those with known hypersensitivity to the active ingredient's class. Official information emphasizes that any known allergies to excipients should be disclosed to a healthcare professional, who can review the product's full composition.


Q: Does Solidon have any known interactions with herbal teas?

Specific interactions with common herbal teas are generally not documented on the official label. However, regulatory warnings about interaction risk apply to all herbal products, including supplements like St. John's wort. For this reason, official guidance indicates that all herbal consumption should be discussed with a healthcare professional.


Q: What are the signs that Solidon might be working for my condition?

According to clinical research themes, the signs that Solidon may be achieving its therapeutic goal relate to a reduction in the severity of symptoms. For example, this could mean the quieting of acute psychotic symptoms or the cessation of severe nausea and vomiting episodes.


Q: How quickly does Solidon start to work?

The full clinical effect of Solidon often takes time to develop because the dosage is usually started low and gradually adjusted (titrated) over a period of days or weeks. Because of this gradual process, it is not always possible to feel the full effects immediately after starting treatment.


Q: How long does the effect of a Solidon dose last?

The typical dosing regimen provides an indication of the duration of action. Solidon is generally prescribed to be taken in divided doses, often three or four times daily, to maintain a consistent effect throughout the day.


Q: Can taking Solidon cause stomach upset or nausea?

Although Solidon is approved to treat severe nausea and vomiting, some people may experience these symptoms as side effects. Nausea, vomiting, abdominal pain, and constipation have all been reported as less common adverse reactions in official safety documents.


Q: Are there any foods or drinks I should avoid while using Solidon?

Official regulatory information advises against the concurrent use of alcohol because it can worsen central nervous system side effects like drowsiness and increase the risk of low blood pressure (hypotension). No specific foods are required to be avoided while using Solidon.


Q: Does Solidon require a prescription from a doctor?

Yes, according to official classification in regulatory jurisdictions like the U.S. and E.U., Solidon is designated as a prescription-only medicine (mathbfRx-only). It cannot be obtained without authorization from a licensed healthcare provider.


Q: Is Solidon considered a controlled substance?

This medication is generally not classified as a federally controlled substance, such as those listed on a DEA schedule in the U.S. However, it is still a powerful, prescription-only medication that is subject to strict prescribing guidelines.


Q: Does Solidon affect fertility or reproductive health?

Regulatory documents primarily focus on risks during pregnancy, where animal studies have shown potential for harm. There are no explicit statements regarding the effects on human fertility in the primary patient labels.


Q: Can Solidon be taken on an empty stomach?

Official administration guidelines state that the oral dose of Solidon can generally be taken with or without food. This provides flexibility for patients when scheduling their doses.


Q: Is Solidon available as a generic medicine?

Yes, the active ingredient in Solidon, Chlorpromazine hydrochloride, is a well-established compound. It is available in widely used generic formulations.


Q: How is Solidon usually packaged or sold?

Official product labels provide details on how the medication is supplied. Solidon is available in various strengths of tablets, oral solutions, and injectable solutions, with packaging details like bottle size and ampule contents specified on the label.


Q: Does Solidon interact with medicines for common conditions like high cholesterol?

Official labels list certain liver enzymes (CYP2D6, CYP3A4) that are involved in Solidon’s metabolism. Official information emphasizes that the disclosure of all current medicines is necessary to evaluate the risk of altered drug effects.


Q: Is it normal to feel no immediate effect after starting Solidon?

Yes, it is common not to feel an immediate effect after beginning treatment with Solidon. This is because the initial dose is typically low and gradually increased (titrated) over time to reach the full therapeutic level. Full clinical benefit can take time to appear.


Q: How does the body eliminate Solidon after it's taken?

The body breaks down Solidon through a process called metabolism, primarily using specific enzymes in the liver. After being broken down by these processes, the inactive substance is eliminated from the body.


Q: What are the legal restrictions on how Solidon can be prescribed?

Regulatory agencies legally restrict the prescribing of Solidon to specific labeled indications and mandate adherence to safety warnings. For example, there is a Boxed Warning for elderly patients with dementia that governs how and when the drug can be used in that population.


Q: Where can I find the official patient information leaflet for Solidon?

The official patient information, often called a Medication Guide or Patient Information Leaflet, is supplied with the product when it is dispensed. This important document is also made publicly available on regulatory websites, such as the FDA's DailyMed.


Q: Can Solidon be crushed or chewed, or must it be swallowed whole?

Official data sheets state that oral tablets should generally be swallowed whole, and note that crushing or chewing is generally avoided due to the potential for local irritation.


Q: What if I experience unusual dreams while taking Solidon?

Official adverse reaction reports list unusual dreams as a rare side effect of Solidon. Official information indicates that any concerning side effect, including unusual dreams, should be reported to a healthcare professional.


Q: Does Solidon contain gluten, lactose, or other common allergens?

The official prescribing information provides a complete description of the dosage form, which includes all inactive ingredients, such as dyes and fillers. This information allows for a check against common allergens like gluten or lactose.


Q: Are there warnings about sun exposure while taking Solidon?

Yes, regulatory warnings advise patients that Solidon can increase the skin's sensitivity to light, a condition known as photosensitivity. Because of this, regulatory warnings advise that minimizing sun exposure is often recommended while taking this medication.

How should Solidon be stored and disposed of?

How to Store and Dispose of Solidon?

Solidon must be stored strictly at Controlled Room Temperature, which is defined by regulatory guidelines as 20 C to 25 C (68 F to 77 F). The product must be protected from light and moisture and must remain in its original container, tightly closed. It is a mandatory child-safety measure to keep the medication out of the sight and reach of children.

Disposal Requirements

Unused or expired Solidon must be discarded according to official instructions, prioritizing authorized Drug Take-Back Programs. The product must not be poured down a sink or flushed down the toilet unless explicitly instructed by official regulatory sources. If a take-back program is unavailable, follow the regulatory procedure for household trash disposal, which involves mixing the product with an undesirable substance before sealing and discarding.

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

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