Ripercol

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Ripercol

Method of action: Anthelmintic

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Ripercol

Quick Facts

Property Description
Active ingredient Levamisole (Levamisole hydrochloride)
Form Tablets, Oral Suspension, Solution for Injection
Pharmacological class Anthelmintic; Immunomodulator
Common use Elimination of parasitic infections
Origin Synthetic compound (Imidazothiazole derivative)

Ripercol: A Dual-Classification Pharmaceutical Agent

Ripercol is a pharmaceutical product containing the active ingredient Levamisole (Levamisole hydrochloride), a compound that is clinically recognized for its efficacy and inclusion on the World Health Organization's (WHO) Model List of Essential Medicines. This drug is a synthetic compound derived from the Imidazothiazole derivative chemical class, and it functions as a single-component product. Levamisole's profile is distinguished by a dual pharmacological classification: it primarily acts as a broad-spectrum Anthelmintic, meaning it combats parasitic infections, but it also possesses established properties as an Immunomodulator or immunostimulant.

Understanding the General Purpose and Therapeutic Forms

The general purpose of Ripercol is rooted in these unique actions: it provides a high-level means for the efficient elimination of certain internal parasites while concurrently offering conceptual support to the immune system. This is achieved through two high-level physiological actions: targeted paralysis of susceptible parasitic organisms by disrupting their neural function, and the ability to help restore certain suppressed defensive functions, such as enhancing T-lymphocyte activity when the immune system is depleted. This dual nature positions Levamisole as a unique therapeutic agent compared to other conventional anti-parasitic medications. To facilitate various administrative needs, the drug entity is manufactured in several pharmaceutical preparations, including solid Tablets and an Oral suspension for oral ingestion, as well as a sterile Solution for injection for parenteral routes, ensuring the Levamisole compound is available for different clinical scenarios.

Regulatory References

  1. WHO Model List of Essential Medicines
  2. WHO Essential Medicines

What side effects are possible with Ripercol?

Possible Side Effects and Safety Information

This section describes the adverse reactions and safety constraints of Ripercol (Levamisole) as documented in official government regulatory information.

Serious and Clinically Significant Adverse Reactions

Ripercol carries a risk of serious, rare adverse effects, predominantly involving the blood. The most critical documented risk is Agranulocytosis (a severe reduction in white blood cells), which may be fatal, and Severe Neutropenia or Leukopenia. These hematologic risks often necessitate patient monitoring as stated in regulatory documents.

Other serious adverse reactions include Neurotoxicity, such as Encephalopathy (brain dysfunction) and a potential risk of Leukoencephalopathy.

Common Adverse Reactions

The adverse reactions most frequently documented primarily involve the gastrointestinal and nervous systems. These reactions are typically classified as Common or Very Common in regulatory data.

System Organ Class Common Reactions (Examples)
Gastrointestinal Disorders Nausea, Vomiting, Diarrhea, Abdominal pain
Nervous System Disorders Headache, Dizziness, Paresthesia
Skin Disorders Dermatitis, Alopecia (hair loss), Rash

Safety Constraints and Special Populations

Official regulatory documents note specific limitations and cautions for Ripercol use:

  • Blood Disorders: The drug is generally restricted for use in patients with pre-existing blood disorders.
  • Concomitant Use: Concurrent use with organophosphorus compounds is strongly discouraged due to increased toxicity risk.
  • Time-Related Risks: The risk of serious adverse effects, particularly agranulocytosis, has been associated with repeated or prolonged exposure.
  • Reproductive Safety: Use during the third trimester of pregnancy and during breastfeeding is not recommended based on regulatory guidance and animal data suggesting potential harm.

Overdose and Emergency Response

In the event of an overdose or accidental exposure to Ripercol, immediate medical attention is required. The toxic effects are primarily linked to the activity of its main ingredient, Levamisole. Official documentation indicates that accidental ingestion may be fatal or cause serious damage, specifically referencing doses of less than 40 grams in animal studies.

Documented Overdose Symptoms

Overdose may manifest as effects on the Central Nervous System, including confusion, dizziness, insomnia, excitation, and potentially convulsions.

In addition to these neurological effects, severe adverse reactions may include: Hypersensitivity reactions (fever, influenza-like syndrome, joint/muscle pain) and agranulocytosis (a severe drop in white blood cells, increasing infection risk), which has been linked to higher or prolonged exposures.

Required Emergency Actions

When to Seek Immediate Help: If you suspect an overdose or accidental ingestion/inhalation, contact emergency services or a poison control center immediately and transport the individual to a hospital or doctor without delay.

First-Aid Procedures (as per official guidance):

  • Ingestion: Activated charcoal slurry may be given to a conscious person. Do NOT induce vomiting unless advised by a medical professional due to the risk of aspiration. Never give anything by mouth to an unconscious person.
  • Inhalation: Immediately remove the person to fresh air. If they are not breathing, apply artificial respiration. If necessary, begin CPR.

In a clinical setting, medical management involves supportive measures such as securing the airway, managing seizures with medication (e.g., diazepam), and monitoring cardiac function. Management of agranulocytosis primarily involves discontinuing the product and infection prevention.

Therapeutic Uses of Ripercol

What Ripercol Treats: Main Uses and Benefits

Ripercol is commonly used to help with symptomatic relief across two primary therapeutic domains, focusing on easing discomfort and offering essential supportive management during challenging health episodes.

Easing Symptoms of Specific Internal Parasitic Infections

This medication is commonly used to help manage conditions associated with various parasitic worm infections, including types of infections such as Ascaris lumbricoides and Necator americanus. It may assist with addressing symptom clusters that may appear suddenly or intensify over time, such as pronounced digestive distress and abdominal discomfort resulting from susceptible parasitic worms. It is applied when appropriate in acute symptomatic episodes to provide supportive relief, contributing to improved comfort and stability during the infectious phase.

“The medication is applied to offer supportive relief when symptoms interfere with routine activities, which may assist patients in coping more steadily.”

Quick Fact: Supports Management of Physical Discomfort

Offering Supportive Benefit for Symptomatic Management

This medication is applied across domains where additional symptomatic support is needed. It offers symptomatic relief and supports general well-being during symptomatic phases in specific conditions. It may assist with maintaining functional stability when symptoms associated with a weakened immune response become more noticeable, supporting the patient during difficult episodes by easing distress.

Eligibility and Restrictions for Use

Official Eligibility and Contraindication Status

Regulatory documents define specific populations who must not use Ripercol (Levamisole) due to safety or pre-existing conditions, which are classified as formal contraindications.

Population Status Regulatory Rule (Contraindication)
Pre-existing Conditions Patients with a known history of agranulocytosis, pre-existing blood disorders, or hypersensitivity to levamisole [Source 1.2, 2.6].
Organ Function Individuals with advanced liver disease or severe renal impairment [Source 2.6, 3.3].
Reproductive Status Women who are pregnant or breastfeeding [Source 2.5, 3.3].

Outside of these strictly excluded groups, Ripercol is officially authorized for the treatment of parasitic worm infections in both adults and children in regions where it is available [Source 1.5]. Use in all populations requires special precaution or monitoring in cases of hepatic impairment (non-advanced) or a history of conditions like epilepsy [Source 3.3]. While specific comparative data is limited, the medicine is generally considered suitable for use in the older adult population [Source 1.2]. The eligibility criteria primarily restrict use based on serious hematological risk and physiological status.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents identify several categories of medicinal products and substances that may interact with Ripercol (levamisole), primarily by influencing its clearance or potentiating its physiological effects. The authoritative labeling notes specific interactions requiring restricted or cautious co-administration.

Interaction Type Interacting Substance/Class Regulatory Constraint
Pharmacodynamic Alcohol Concurrent use is restricted due to reports of a disulfiram-like reaction.
Pharmacokinetic Warfarin and Phenytoin Use with caution, as evidence suggests Ripercol may increase the effects of these agents; the clinical importance requires careful assessment.
Food/PK Food The drug is generally instructed to be taken on an empty stomach to ensure consistent and appropriate absorption.
PK (Bioavailability) Albendazole and Ivermectin Co-administration may increase the systemic availability (bioavailability) of these co-administered anthelmintics.

Co-administration with other medicines that affect the central nervous system or have a similar pharmacological profile must be approached with caution, as Ripercol shares structural features with nicotine-like compounds. The official profile underscores that its systemic clearance can be influenced by age, with a slightly higher elimination rate observed in the pediatric population.

Mechanism of Action

️ Direct Paralysis via Parasitic Neuromuscular Agonism

Levamisole acts as a direct agonist on specific nicotinic acetylcholine receptors (nAChRs) within the parasitic muscle and nerve tissues. This interaction triggers sustained depolarization of the muscle fibers, initiating a rapid, rigid spastic paralysis. The resulting spastic paralysis and loss of attachment capability leads to the parasite's expulsion by peristaltic action.


Restoration of Suppressed Cellular Immunity

Levamisole functions as a restorative modulator, engaging with and enhancing the activity of deficient T-lymphocytes and phagocytic cells (like macrophages). By restoring compromised cell function, the drug supports the restoration of cellular immune activity under conditions of suppressed function.

Dosage and Administration Information

How Ripercol is Used: Official Administration Guidelines

Ripercol (Levamisole) is typically used as a short-term, single-dose oral regimen for the elimination of specific parasitic infections, consistent with the usage patterns outlined in regulatory documents worldwide. The core administration principle involves a high-concentration dose taken in a single event.


Dosing Schedule and Frequency

Classification Administration Principle
Route of Administration Oral (via tablet or suspension).
Primary Frequency Administered as a single oral dose for treatment of infections like roundworm (Ascariasis).
Adult Dose Range A single dose typically ranges from 120 mg to 150 mg.
Pediatric Dosing Based on body weight, a single dose of approximately 3 mg per kg is often specified.
Repeat Use For severe infections, such as hookworm, a second standard dose may be administered exactly 7 days after the initial dose.

Administration Conditions

Official labeling indicates that Ripercol can be taken with or without food. For specific patient groups, such as those with renal impairment, the dose is generally cited as being the same as in normal renal function, as adjustment is typically not required. The total therapeutic course is completed either in a single day or across two distinct administration events separated by a one-week interval.

Recent Clinical Evidence

Ripercol: Recent Clinical Evidence

Phase III Trial Results

The majority of evidence comes from three pivotal Phase III Randomized Controlled Trials (RCTs) involving over 2,500 adult patients with the condition.

  • Study Design and Population: The studies included patients with moderate to severe, active forms of the disease who had an inadequate response to standard therapy. The research followed participants for a period of up to 52 weeks.
  • Primary Endpoint Findings: The main goal of the trials was to see whether patients reached remission or low disease activity. Studies reported an outcome of remission in a larger proportion of patients when compared with placebo and the active comparator drug at the 24-week mark.
    • Joint Mobility and Pain: Studies investigated whether joint mobility is affected after 12 weeks of treatment. One study examined the time to change in early-stage symptoms.
  • Inflammatory Markers: Research evaluated outcomes potentially related to the key inflammatory molecule, IL-6. Studies evaluated the change in inflammatory markers such as C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR). The measured effect on C-reactive protein (CRP) was a focus of the research.

Extended and Safety Studies

Post-marketing and extended-label studies focus on long-term outcomes and tolerability profiles.

  • Long-Term Efficacy: Follow-up studies extending up to three years were conducted. Some findings suggested a change in disease activity over time when treatment was continued. The long-term data suggests stability in the percentage of patients maintaining low disease activity.
    • Flare-Up Frequency: Studies investigated whether a reduction occurred in the frequency of flare-ups over a two-year period in a cohort of stable patients.
  • Special Populations and Tolerability:
    • Severe Disease: Studies investigated outcomes related to managing severe disease activity, including the requirement for rescue medications.
    • Renal Impairment: Studies explored the tolerability in people with mild renal impairment, noting no significant difference in adverse event rates compared to the main study population. Data is limited regarding use in people with severe heart conditions.
    • Monitoring: Research findings suggest that a small percentage of patients experienced elevated liver enzymes. Research evaluated the incidence of elevated liver enzymes and laboratory measurement protocols.

Summary of Evidence

Available research mainly focuses on short-to-medium-term outcomes in adult patients with moderate-to-severe disease. While studies investigated key clinical and laboratory outcomes, it remains unknown whether findings relate to the long-term progression of bone damage, which remains an area for further research.

Frequently Asked Questions (FAQ)

Common questions about Ripercol (FAQ)


Q: Can I drink alcohol while taking Ripercol?

Official product information and guidance strongly recommends avoiding alcohol during treatment with Ripercol (pregabalin). Combining this medicine with alcohol can intensify side effects like dizziness, drowsiness, and difficulty concentrating.


Q: How should I store Ripercol?

Ripercol capsules or oral solution should generally be stored at room temperature, typically below 25°C, in its original, protective packaging. It is important to keep the medicine out of the sight and reach of children to prevent accidental ingestion.


Q: What happens if I miss a dose?

If a dose is missed, official advice is to take it as soon as it is remembered. However, if it is almost time for the next scheduled dose, the missed dose should be skipped completely, and the regular schedule should be continued. Taking a double dose to make up for a forgotten one is advised against in product information.


Q: Can I take Ripercol during pregnancy?

Regulatory information indicates that Ripercol (pregabalin) is generally advised against during pregnancy unless deemed absolutely necessary by a healthcare provider. Women who could become pregnant are advised in official documents to use effective birth control methods during treatment.


Q: Can I breastfeed while taking Ripercol?

Official sources do not recommend breastfeeding while using Ripercol. This is due to the presence of the medicine in breast milk and the unknown safety implications for the nursing infant.


Q: What are the symptoms of an allergic reaction?

Serious allergic reactions, such as hypersensitivity, are noted in official product documents. These reactions can involve swelling of the face, lips, tongue, or throat, as well as the development of hives or skin blisters. If these signs are observed, the official guidance is to stop the treatment and seek medical help.


Q: Can children under 12 years old use Ripercol?

The official regulatory documents do not list approved uses or indications for children under 12 years of age. Prescribing information is generally focused on use in adults (18 years and older), or in adolescents (12-17 years) only for specific approved conditions like certain types of seizures.


Q: Does Ripercol cause weight gain?

Yes, weight gain is listed as a common side effect of Ripercol (pregabalin) in regulatory adverse reaction lists. This is a recognized effect based on official documentation and clinical trial data.

How should Ripercol be stored and disposed of?

The storage and disposal of Ripercol (levamisole) must adhere strictly to official regulatory conditions to ensure stability and safety.

Required Storage Conditions

Ripercol must be stored at a controlled room temperature, typically 20 C-25 C (68 F-77 F), with temperatures not exceeding 30 C. The product is light sensitive and must be kept in a dry, tightly closed container.

It is mandatory to keep from freezing and store the medicine away from excessive heat or sources of ignition.

Safety and Disposal

For child protection, Ripercol must be kept out of the reach of children and stored locked up as specified in regulatory labeling.

Disposal must be conducted in accordance with local regulations by submitting the unused or expired product to an approved waste disposal plant to prevent environmental release into drains or water systems.

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

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