Pharmadol

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Pharmadol

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 Pharmadol

What is Pharmadol? (Overview)

Property Description
Active Ingredient Paracetamol (Acetaminophen)
Common Forms Tablets, Capsules, Liquid Suspension
Pharmacological Class Analgesic and Antipyretic
Common Use Temporary relief of pain and fever
Origin Synthetic Compound

Pharmadol is a medication whose active ingredient is paracetamol, a chemical compound also known as acetaminophen in the United States. It belongs to the pharmacological class of p-aminophenol derivatives and is classified as an analgesic (pain reliever) and antipyretic (fever reducer).

This particular brand is typically manufactured as an over-the-counter (OTC) product and is often available in a 500 mg immediate-release tablet form for adults and adolescents. Its common use is to temporarily relieve minor aches and pains, such as those associated with the common cold or a headache, and to reduce fever. The efficacy of paracetamol for managing both acute pain and fever is clinically recognized.

While considered safe and effective when taken according to directions, it is crucial to understand that exceeding the maximum recommended daily dose can lead to severe liver damage. Strict adherence to dosing guidelines is essential for safe use.

Regulatory References

  1. NIH Monograph on Paracetamol (Acetaminophen)
  2. Acetaminophen Drug Information - MedlinePlus
  3. MedlinePlus Drug Information

What side effects are possible with Pharmadol?

Possible Side Effects and Safety Information

Pharmadol's safety profile, based on official regulatory classifications, is characterized by a low incidence of common adverse reactions and a critical emphasis on dose-related toxicity. The most significant safety concern documented in government labeling is the potential for severe hepatic failure and necrosis (liver damage), which is primarily associated with acute overdose or chronic supra-therapeutic use.

Most other clinically significant reactions are formally classified by regulatory agencies as rare or very rare.

Official Adverse Reaction Categories

Regulatory documentation groups adverse reactions into specific System-Organ Classes, with frequencies defined by clinical experience:

Category Description and Classification
Hepatobiliary Disorders Severe liver damage (risk related to dose/exposure).
Immune System & Skin Rare hypersensitivity reactions (e.g., rash) and Very Rare Serious Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson syndrome.
Blood Disorders Rare blood dyscrasias, such as thrombocytopenia.
Gastrointestinal Symptoms such as nausea, vomiting, and abdominal pain (frequency generally Not Known).

Population-Specific Safety Notes

The medicine is formally contraindicated for use in individuals with pre-existing severe active hepatic disease. Regulatory authorities also note that chronic heavy alcohol users face an increased risk of hepatotoxicity. For patients with renal impairment, caution is advised, and reduced frequency may be necessary to maintain safety. These regulatory constraints structure the official understanding of the medicine's risk profile, focusing on strict dose adherence and pre-existing conditions.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdosing on Pharmadol (acetaminophen/paracetamol) is a serious medical emergency primarily characterized by the risk of severe, life-threatening liver damage (hepatotoxicity), which can progress to acute liver failure and death. This risk is central to official regulatory guidance on overdose management.

Overdose can result from taking a single large amount or from repeatedly exceeding the maximum daily dose, often unintentionally when using multiple products containing the substance.

Official Regulatory Overdose Profile

Overdose Presentation Domain Description
Hepatotoxicity Risk The most critical risk; it is dose-dependent and can lead to death.
Delayed Symptoms Initial symptoms like nausea, vomiting, sweating, or abdominal pain are often non-specific, mild, or may be delayed 12 hours or more after ingestion.
Emergency Antidote Need Immediate treatment with an antidote is essential, as effectiveness in preventing liver injury significantly diminishes if delayed past a crucial window.

When to Seek Immediate Medical Help

If an overdose is suspected, or if a person has taken more than the recommended amount, seek emergency medical assistance or contact a Poison Control Center immediately. This action is mandatory even if the person feels completely well. The absence of early symptoms does not indicate safety, and rapid medical intervention is necessary to evaluate the risk and administer time-critical treatment before irreversible liver damage occurs.

Therapeutic Uses of Pharmadol

What Pharmadol Treats: Main Uses and Benefits

The primary role of Pharmadol (Paracetamol/Acetaminophen) is as a widely utilized agent applied across domains where short-term symptom management is appropriate. The medication is used for managing pain and fever.

It is commonly used to help with symptoms related to physical discomfort and systemic imbalance across conditions presenting with acute or episodic manifestations. These indications include various pain patterns such as headaches, toothaches, musculoskeletal aches, and episodic discomfort related to menstrual cycles, as well as the fever and generalized body aches associated with the common cold or flu.

Quick Fact: Supports Systemic and Localized Discomfort

Applied during phases when symptoms become more noticeable, the medication supports the patient during difficult episodes by easing distress. This supportive role is often applicable to sensitive patient groups, including use during pregnancy or breastfeeding for temporary, necessary relief.

“Pharmadol helps maintain a sense of stability when symptoms are more noticeable, contributing to easing the overall symptom load.”

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

The official eligibility profile for Pharmadol is strictly defined by regulatory criteria documented in authoritative governmental labeling.

Populations for Whom Use is Contraindicated

The medicine is contraindicated (absolutely prohibited) for individuals with a documented known hypersensitivity or allergy to paracetamol (acetaminophen) or any of the product's excipients. It is also contraindicated in patients with severe hepatic impairment or severe active liver disease.

Restricted or Conditional Use

Standard eligibility is granted to Adults and Adolescents. However, use is subject to restrictions in specific populations due to the potential for increased risk.

  • Organ Function: Caution is required in patients with pre-existing hepatic impairment (excluding severe cases) or severe renal impairment (creatinine clearance le 30 mL/min).
  • Comorbidities: Use is generally not recommended or requires specific caution for individuals with chronic alcoholism or chronic malnutrition, as these are documented risk factors for glutathione depletion.

Age and Reproductive Status

Age-related eligibility means adult-strength formulations are restricted by minimum age thresholds, typically 10 to 12 years and older. Geriatric use generally requires no specific dosage reduction based on age alone.

Use during pregnancy and lactation is generally permitted when clinically necessary. Regulatory guidance advises limiting exposure to the lowest effective dose for the shortest duration required.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Pharmadol’s official regulatory profile addresses interactions that impact drug concentration (pharmacokinetics), reinforce effects (pharmacodynamics), and impose specific administration constraints.

Category Documented Interacting Substances
Exposure-Altering Drugs Probenecid; Isoniazid; Lamotrigine; Chloramphenicol
Enzyme Inducers Rifampicin, Carbamazepine, Phenytoin, St John’s Wort
Pharmacodynamic Enhancers Warfarin (and other Oral Anticoagulants); Zidovudine; Flucloxacillin

Officially Documented Interaction Statements

  • Contraindicated Combination: Co-administration with any other product containing paracetamol (acetaminophen) is strictly prohibited by government regulatory agencies due to the significant risk of severe liver damage from exceeding the maximum daily threshold.
  • Anticoagulant Risk: Prolonged regular daily use with Warfarin can officially enhance the anticoagulant effect, increasing the risk of bleeding.
  • Clearance Modification: Probenecid is documented to reduce Pharmadol’s clearance by approximately 50%, resulting in increased plasma exposure to Pharmadol.
  • Metabolic Risk: Co-administration with liver enzyme inducers can accelerate the formation of the toxic paracetamol metabolite, officially increasing the risk and severity of hepatotoxicity.
  • Absorption Timing: Cholestyramine reduces the rate of absorption; administration must not be within one hour of Pharmadol if a rapid onset of effect is required. Substances like Metoclopramide increase the speed of absorption.
  • Substance Interaction: The risk of severe liver damage is officially heightened if the patient consumes three or more alcoholic drinks per day while using the medicine.

Population-Specific Notes: Interaction severity is officially documented as greater in patients with hepatic impairment or chronic alcoholism when considering co-administration with enzyme inducers. The risk of HAGMA with Flucloxacillin is also heightened in patients with specific risk factors like severe renal impairment.

Mechanism of Action

Pharmadol's molecular mechanism involves multiple pathways, primarily targeting the central nervous system (CNS). It acts as an inhibitor of cyclooxygenase (COX) enzymes, particularly COX-2, in the CNS where the concentration of peroxides is low. This inhibition decreases the synthesis of prostaglandins (PGs), such as PGE2, which are key mediators in thermoregulation and nociception signaling. The reduction of PGE2 synthesis modulates neuronal activity in the hypothalamus and spinal cord.

Additionally, Pharmadol's action involves a metabolite, N-arachidonoyl-aminophenol (AM404). AM404 is formed by conjugation of Pharmadol's p-aminophenol metabolite with arachidonic acid, mediated by fatty acid amide hydrolase (FAAH). AM404 acts as an agonist at the transient receptor potential vanilloid-1 (TRPV1) receptor and an indirect agonist of cannabinoid CB1 receptors in the CNS. The activation of these receptors and the potentiation of descending serotonergic neuronal pathways contribute to the systemic physiological consequence of elevated nociceptive threshold and modulation of core body temperature.

Dosage and Administration Information

Pharmadol administration follows parameters detailing dosage, frequency, and route of intake. The medicine is utilized for oral, intravenous (IV), and rectal administration, addressing different clinical settings. The standard adult dosing regimen typically specifies 325 mg to 1000 mg per dose, taken every 4 to 6 hours for immediate-release forms. A minimum interval of 4 hours between doses is maintained to ensure proper drug clearance.

The most critical administration parameter is the maximum total daily dose, which must not exceed 4000 mg in a 24-hour period from all sources combined. Strict adherence to this limit is essential for proper use.

For specific patient groups, dose adjustments are utilized. Patients with severe renal impairment (creatinine clearance leq 30 mL/min) extend the minimum time between doses to at least 6 hours. Administration for adults weighing less than 50 kg and for pediatric patients is determined by a weight-based calculation, such as 12.5 mg/kg or 15 mg/kg per dose.

Proper use also involves specific preparation steps for certain forms. The IV solution is administered via infusion over a duration of 15 minutes, and liquid suspensions are measured using a calibrated dosing device to ensure accurate delivery of the labeled strength.

Recent Clinical Evidence

Pharmadol (Paracetamol/Acetaminophen) was studied for a broad range of scientific investigations, and research has examined outcomes related to physical discomfort and systemic or functional imbalance. The research base primarily consists of short-term Randomized Controlled Trials (RCTs), where the medicine was observed in controlled settings, and extensive Systematic Reviews that combine these findings. This evidence base contributes to the broader evidence landscape.


Evidence for Use in Temporary Relief of Pain (Analgesia)

The medicine was studied for conditions associated with acute or disruptive episodes, such as headaches, dental pain, and pain after procedures. Short-term RCTs compared the medicine to a placebo or an active comparator. The key outcomes measured included standardized scales to assess patient-reported outcomes describing perceived discomfort. Studies reported findings that describe patterns observed in pain scores when compared to placebo. However, the evidence quality varies across studies when research was evaluated in contexts beyond short-term, acute pain. For chronic pain, findings were mixed or evidence is limited, meaning long-term effects are not fully established regarding patterns of symptom evolution.


Evidence for Use in Temporary Reduction of Fever (Antipyresis)

Research examining temporary physiological imbalance was evaluated in studies focusing on episodes where symptoms become more noticeable. Trials focused on Febrile Children are particularly well-represented, and this research monitors physiological strain or stress. These studies reported findings that describe patterns observed in body temperature, observed over defined time intervals within the first few hours of administration. In more complex settings, such as critically ill adult patients, certainty remains low for evidence exploring outcomes reflecting daily functioning beyond temporary temperature control.


Research Gaps and Special Populations

Research was evaluated in specific age groups, primarily Children and Adolescents, to ensure that outcomes reflecting daily functioning during illness was evaluated in these populations. The medicine was studied for patients with co-existing health conditions, such as those with chronic liver or kidney issues, often using observational settings. Data for certain groups remain insufficient. Evidence regarding temporary use during pregnancy and breastfeeding is primarily derived from observational settings. While the short-term profile was observed in some studies, long-term effects are not fully established regarding daily, continuous use. Research provides context but not individual predictions, emphasizing that evidence highlights what is known — and what is still uncertain.

Key Studies & References

  1. Acetaminophen (StatPearls)
  2. Acetaminophen (MedlinePlus Drug Information)

Frequently Asked Questions (FAQ)

Common questions about Pharmadol (FAQ)


Q: How quickly does Pharmadol usually start working?

A: Official labeling for immediate-release forms describes the typical onset of action as occurring within 30 to 60 minutes following oral administration. This is the timeframe in which the medicine's effects are typically observed in research.

Q: How long do the effects of Pharmadol typically last?

A: According to the official product information, the temporary relief provided by the immediate-release form of Pharmadol typically lasts for four to six hours. This duration is generally aligned with the minimum interval often cited in regulatory dosing guidelines.

Q: Is it possible to feel fatigued or tired after taking Pharmadol?

A: Regulatory safety documents do not list fatigue or tiredness among the commonly described or officially classified adverse reactions for Pharmadol. This suggests that feeling fatigued is not a commonly expected effect of the medicine.

Q: Are headaches a commonly reported side effect of Pharmadol?

A: Official safety documents for Pharmadol do not list headaches among the commonly described or classified adverse reactions. Since the medicine is used to treat headaches, its profile generally does not include this effect.

Q: Why does the packaging for Pharmadol sometimes include a warning about driving?

A: Official documents state that negative effects on the ability to drive and use machines are generally not expected when the medicine is used according to its instructions. Any warning is typically included to address potential rare or individual reactions that could temporarily affect coordination.

Q: Is Pharmadol a type of narcotic or controlled substance?

A: According to government regulatory scheduling in most jurisdictions, the active ingredient in Pharmadol, paracetamol (acetaminophen), is not generally classified as a narcotic or a federally controlled substance.

Q: Can Pharmadol affect blood pressure readings?

A: Official regulatory documents do not list changes in blood pressure among the commonly described or officially classified adverse reactions. This suggests that the medicine, when used according to its regulatory guidelines, is not commonly associated with effects on blood pressure.

Q: What does it mean if I miss a dose of Pharmadol?

A: Official guidance addresses the management of a missed dose by prioritizing adherence to the minimum time interval between doses and the maximum total daily dose limit. This prioritization ensures the drug remains within safe systemic parameters.

Q: Do studies suggest Pharmadol can be taken long-term?

A: Official labeling and research summaries indicate that this medicine is primarily studied and intended for short-term use for temporary relief of symptoms. Evidence for daily, continuous long-term use for some conditions is not fully established in all contexts. Official documents emphasize strict adherence to dosing limits regardless of the duration of use.

Q: Is Pharmadol safe for people who have kidney issues?

A: Regulatory guidance indicates that use requires caution in populations with conditions like severe renal impairment (significant kidney issues). For these populations, official documents cite the importance of adjusting the interval between doses.

Q: What are the most common non-serious side effects associated with Pharmadol?

A: While most serious adverse reactions are classified as rare, official regulatory documents list effects such as nausea, vomiting, and abdominal pain under the gastrointestinal category. The frequency of these non-serious effects is often described as Not Known or highly variable, reflecting differences across patient experiences.

Q: Is it true that Pharmadol is generally not recommended for children?

A: Official documents state that adult-strength formulations are restricted for use under specific age thresholds. However, regulatory instructions do include guidelines for use in pediatric patients when administration follows a weight-based calculation found in the official guidelines.

Q: What does the term 'contraindication' mean in the context of Pharmadol?

A: A contraindication is a term used in official documentation to describe a specific condition or circumstance that strictly prohibits the use of the medicine. This prohibition is put in place because the potential risk of harm in that specific context outweighs the potential benefit.

Q: Is there a generic version of Pharmadol available?

A: The active ingredient used in this medicine is paracetamol, which is also known as acetaminophen. This core ingredient is a chemical compound that is widely available worldwide as a generic medicine under its chemical name.

Q: Is there research evidence suggesting Pharmadol helps improve overall quality of life?

A: Studies have primarily focused on patient-reported outcomes describing perceived discomfort (pain) and temporary temperature control (fever reduction). The research base available for outcomes reflecting overall quality of life is often noted to be limited, particularly in complex or long-term settings.

Q: What is the typical timeframe for seeing the full benefit of Pharmadol treatment?

A: Since Pharmadol is used for temporary relief of acute symptoms, the full effect is generally observed quickly. Research reports findings observed within the first few hours of administration, particularly for fever reduction and acute pain relief.

Q: Is Pharmadol considered a high-risk medication by government health organizations?

A: Official regulatory documents emphasize the significant risk of severe liver damage primarily associated with acute overdose or exceeding the daily limit. Strict adherence to official instructions is a core component of the risk management strategy documented in official labeling.

Q: Does taking Pharmadol cause drowsiness?

A: Regulatory safety documents for Pharmadol do not list drowsiness among the commonly described or officially classified adverse reactions. Therefore, this is not a commonly expected side effect of the medicine.

Q: Does the drug's effectiveness change over time with continued use?

A: Regulatory documents do not specifically describe a documented change in the drug's effectiveness over short-term, recommended use periods. Research evidence for daily, continuous long-term use for certain conditions is noted to be not fully established.

Q: What are the initial signs that Pharmadol is starting to work for my condition?

A: The initial signs that the medicine is providing relief are described as the reduction of the fever or the lessening of the perceived discomfort. This therapeutic effect is the time frame in which relief is typically observed following administration.

Q: Can Pharmadol be taken with common pain relievers like ibuprofen?

A: Official regulatory documents do not list an interaction that strictly prohibits co-administration with non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen. However, regulatory guidelines ensure that any warnings about conditional co-administration are clearly defined in the official labeling.

Q: Why is Pharmadol sometimes prescribed for conditions other than its main use?

A: This FAQ focuses strictly on the uses that have been officially approved by government regulatory agencies. Any information on other potential uses of the medicine is considered outside the scope of the authorized product labeling.

Q: Do regulatory bodies require special monitoring while taking Pharmadol?

A: Regulatory documents do not require general monitoring (like routine blood tests) for the entire patient population. However, caution and specific monitoring is addressed in the regulatory guidelines for patients with certain pre-existing conditions, such as severe hepatic (liver) or renal (kidney) impairment.

Q: What is the purpose of the filler ingredients listed in Pharmadol tablets?

A: Regulatory bodies classify filler ingredients, or excipients, as substances required to ensure the stability, manufacturing, or proper delivery of the active ingredient. These components are not intended to have a therapeutic effect themselves.

Q: Can Pharmadol affect sleep patterns?

A: Regulatory safety documents do not list adverse effects on sleep patterns among the commonly described or officially classified adverse reactions for Pharmadol.

Q: Why are people often told to drink a full glass of water when taking Pharmadol?

A: Official patient information often mentions that the medicine is administered with a full glass of water. This is generally cited to ensure proper swallowing and quick transit of the tablet into the stomach, which can aid in the absorption process.

Q: Can Pharmadol affect the results of lab tests, like a blood panel?

A: Official prescribing documents state that administration of Pharmadol may interfere with the results of certain laboratory tests. This interference has been described for some measurements related to glucose and uric acid.

Q: Does Pharmadol need to be taken with food?

A: Official instructions state that Pharmadol can be taken with or without food. It is noted that taking the medicine with food may cause a slight delay in the onset of its effects.

Q: Are there any known issues with stopping Pharmadol suddenly?

A: Official regulatory documents do not describe specific issues (such as withdrawal or rebound effects) related to suddenly stopping Pharmadol when it has been used according to the recommended short-term regimen.

Q: What is the distinction between a 'side effect' and an 'adverse reaction' for Pharmadol?

A: In regulatory documents, the terms adverse reaction and side effect are often used synonymously to describe any undesired effect that occurs during treatment. The classification system focuses on the frequency and seriousness of these events rather than a strict linguistic difference between the two terms.

Q: Can Pharmadol be crushed or split for easier swallowing?

A: The official instructions for standard immediate-release tablets generally indicate that they can be crushed or split. However, this administration instruction is subject to the specific details found in the product label.

Q: Is it possible to develop a tolerance to Pharmadol over time?

A: Official regulatory documents do not describe the development of pharmacological tolerance to Pharmadol's effects when the medicine is used according to the recommended short-term regimen.

Q: Can Pharmadol be taken by people with diabetes?

A: Official prescribing information does not list diabetes as a specific contraindication or a condition requiring a dose adjustment when the medicine is used according to its official labeling. However, the medicine may interfere with certain glucose measurements in laboratory tests.

Q: Is it true that some people don't respond to Pharmadol?

A: Research evidence reports findings that describe patterns observed in the population, but individual physiological responses to any medicine can vary. This means that not all individuals may experience the same level of relief.

Q: Does the time of day I take Pharmadol matter?

A: Official instructions prioritize maintaining the minimum required time interval between doses (typically 4 hours) to stay within the daily safety limit. Regulatory documents do not mandate a specific time of day for administration.

How should Pharmadol be stored and disposed of?

How to Store and Dispose of Pharmadol?

Storage and disposal of Pharmadol (Paracetamol/Acetaminophen) must adhere strictly to regulatory guidelines to ensure product stability and prevent accidental exposure.

Storage Requirements

Condition Regulatory Specification
Temperature Store at Controlled Room Temperature, between 20 C to 25 C (68 F to 77 F).
Protection Protect the product from moisture and excessive heat. Do not store in high-humidity areas like a bathroom.
Container Keep Pharmadol in its original container, tightly closed.
Child Safety Store the medication out of the sight and reach of children.

Disposal Instructions

Unused or expired Pharmadol should be disposed of using a drug take-back program. If a program is unavailable, mix the medicine with an unappealing substance, seal it in a bag, and place it in the household trash. Do not flush the product down the toilet or pour it into a drain.

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

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