Dolol (Acetaminophen)

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Dolol (Acetaminophen)

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 Dolol (Acetaminophen)

Quick Facts

Property Description
Active Ingredient Acetaminophen (Paracetamol)
Form Tablet, Capsule, Solution, Suppository, Injection
Pharmacological Class Non-opioid Analgesic and Antipyretic
Common Use Symptomatic relief of pain and fever
Origin Synthetic (Para-aminophenol derivative)

What Type of Medicine is Dolol (Acetaminophen)?

Dolol is a preparation whose core active ingredient is Acetaminophen, widely known internationally as Paracetamol. This substance is chemically classified as a synthetic para-aminophenol derivative, which places it within the pharmacological class of non-opioid analgesics and antipyretics. Authorities recognize it as one of the most commonly utilized over-the-counter (OTC) drugs for managing symptomatic discomfort. Acetaminophen is clinically recognized for its effectiveness and is recommended as a first-line treatment in many pain management protocols. For instance, it is a typical choice for providing temporary relief from general headaches or muscle aches.

Composition, Forms, and General Purpose

The product is fundamentally designed as a single-ingredient preparation, containing only Acetaminophen as the medicinal compound. This focus on the single active ingredient differentiates its profile from multi-component preparations used for complex cold or flu symptoms. Acetaminophen is manufactured in a range of diverse dosage forms to accommodate varying patient groups and routes of administration. These forms include standard tablets and capsules for oral consumption, liquid solutions for precise dosing in children, and suppositories for rectal administration. Its general purpose is focused on providing relief by acting on the central nervous system: it works to alleviate general pain by elevating the body's pain threshold and to lower a fever by facilitating the body's natural cooling process.

Regulatory References

  1. NIH LiverTox: Acetaminophen

What side effects are possible with Dolol (Acetaminophen)?

Possible Side Effects and Safety Information

Dolol (Acetaminophen) is generally well-tolerated at recommended doses, but it is associated with two primary areas of serious safety risk, as documented by governmental regulatory bodies like the FDA and EMA: severe liver damage and serious skin reactions.


Serious and Clinically Significant Adverse Reactions

System-Organ Class Serious Adverse Reaction Regulatory Classification
Hepatic (Liver) Acute Liver Failure or Severe Hepatotoxicity Leading cause of acute liver failure, potentially fatal, linked to overdose.
Immune/Skin Severe Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson Syndrome (SJS), Toxic Epidermal Necrolysis (TEN), and Acute Generalized Exanthematous Pustulosis (AGEP). Rare but serious, potentially fatal, and requires immediate discontinuation.

Dose-Related and Population-Specific Safety Considerations

Liver Warning and Risk Factors: Severe liver damage is the most critical risk and may occur if the maximum recommended daily dosage is exceeded, if the drug is taken concurrently with other products containing acetaminophen, or if three or more alcoholic drinks are consumed daily while using the product. Individuals with active liver disease or chronic alcoholism face a significantly increased risk of hepatotoxicity.

Hypersensitivity: Known allergy to acetaminophen or any product ingredient is a formal contraindication. A patient who has experienced a severe skin reaction with acetaminophen should not take the drug again.

Pregnancy: Acetaminophen is widely used during pregnancy; however, some observational studies have suggested a possible link between prenatal exposure and certain neurodevelopmental outcomes (e.g., ADHD). Regulatory guidance advises caution and use of the lowest effective dose for the shortest duration necessary, while acknowledging it remains a primary treatment option for fever and pain.


High-Level Safety Monitoring Notes

Regulatory warnings advise immediate discontinuation of the drug and seeking emergency medical help if any signs of a skin reaction (skin reddening, rash, blisters) or liver toxicity (e.g., yellowing of the skin/eyes, upper abdominal pain, dark urine) are observed. These warnings emphasize that liver damage symptoms may be delayed following an overdose.

Overdose and Emergency Response

Acetaminophen (Dolol) overdose carries a significant risk of delayed, severe organ damage. Initial manifestations may be non-specific, including pallor, nausea, vomiting, anorexia, and abdominal pain. The primary severe outcome documented in regulatory labels is hepatic necrosis, which can progress to hepatic failure, encephalopathy, coma, and potentially death. Acute renal failure is also a documented physiological consequence.

Immediate medical advice must be sought in the event of a suspected overdose, even if the patient feels well, due to the inherent risk of delayed toxicity. Regulators mandate that patients be referred to the hospital urgently and that a Poison Control Center be contacted immediately.

The established antidote for acetaminophen poisoning is N-acetylcysteine (NAC). Its maximum protective effect is time-dependent and obtained when treatment is initiated promptly post-ingestion. Management protocols require urgent serial laboratory assessments for monitoring hepatic function (e.g., transaminases and INR) and blood concentration levels. The risk of severe hepatotoxicity is noted to be greater in populations with risk factors such as chronic malnutrition or the concurrent use of enzyme-inducing drugs.

Therapeutic Uses of Dolol (Acetaminophen)

What Dolol (Acetaminophen) Treats: Main Uses and Benefits

This medication is commonly used to help with symptomatic relief across the primary domains of pain and fever. This supportive therapeutic benefit assists with maintaining functional stability when symptoms interfere with routine activities.

Dolol (Acetaminophen) is applied in addressing symptoms related to physical discomfort, and is used for managing mild to moderate pain that is relevant for episodic manifestations such as tension headache, muscular aches, and toothache, as well as the discomfort of primary dysmenorrhea. It is relevant in contexts involving heightened systemic burden, where it may assist with symptoms of increased neurological or muscular activity and high temperature (pyrexia) associated with the common cold and influenza.

The medication is considered relevant across domains where additional symptomatic support is needed. It may be part of symptomatic management for conditions like mild osteoarthritis and is often used during phases when symptoms become more noticeable following routine procedures or vaccinations, which helps maintain a sense of stability when symptoms are more noticeable.

“Relevant when symptoms create noticeable physiological strain, this medication contributes to improved comfort during symptomatic periods.”

Quick Fact: Relief for Pain and Fever
Primary Indication: Symptomatic relief of mild to moderate pain and high temperature (pyrexia).
Core Benefit: Contributes to easing the overall symptom load.
Key Scenarios: Headache, toothache, muscle aches, and fever from cold/flu.

Regulatory References

  1. NIH MedlinePlus Drug Information on Acetaminophen

Eligibility and Restrictions for Use

Who Can and Cannot Use Dolol (Acetaminophen)?

Official regulatory documents define population eligibility based on absolute contraindications, age, organ function, and physiological status.


Contraindicated Populations (Absolute Non-Eligibility)

Classification Population Restriction
Hypersensitivity Patients with known hypersensitivity to acetaminophen or to any excipient.
Severe Liver Disease Patients with severe hepatic impairment or severe active hepatic disease.

Age and Condition-Based Restrictions

Eligibility is generally established for adults, adolescents, and children over 2 years of age. Use in infants and neonates is limited to specific clinical protocols. The medicine requires caution in patients with non-severe hepatic impairment, severe renal impairment (creatinine clearance le 30 mL/min), chronic malnutrition, or alcoholism.


Pregnancy and Lactation Eligibility

Official labeling defines use in pregnancy as conditional: it is permitted only if clearly needed and restricted to the lowest effective dose for the shortest duration. Use during lactation is generally considered acceptable by regulators.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information identifies specific interaction patterns and restrictions for Acetaminophen, the active ingredient in Dolol.


Contraindicated Combinations and Substance Restrictions

  • Other products containing Acetaminophen (Paracetamol): Co-administration with any other medicinal product, prescription or over-the-counter, containing Acetaminophen is strictly prohibited. This restriction prevents accidental overdose and the associated severe risk of liver damage.
  • Alcohol (Ethanol): Regulatory warnings state that severe liver damage may occur when Acetaminophen is used concurrently with chronic alcohol consumption, especially with three or more alcoholic drinks per day.

Documented Pharmacokinetic and Pharmacodynamic Interactions

  • Glucuronidation Inhibitors: Medicines such as Probenecid are documented to reduce Acetaminophen's clearance, which results in increased plasma concentrations of the drug.
  • Liver Enzyme Inducers: Substances like Phenytoin and Rifampicin are officially noted to accelerate Acetaminophen's metabolism. This leads to a decrease in overall exposure (AUC) of Acetaminophen.
  • Oral Anticoagulants: Prolonged use of Acetaminophen, particularly at high doses, may interact with agents like Warfarin by increasing the International Normalized Ratio (INR), thereby enhancing the risk of bleeding.
  • Gastric Emptying Modifiers: Metoclopramide and Domperidone can increase the rate of absorption of Acetaminophen, while drugs that delay gastric emptying will delay the absorption.

This structure defines the mandatory constraints and formal interaction outcomes detailed in government drug labels.

Mechanism of Action

How Dolol (Acetaminophen) Works

Central Cyclooxygenase Inhibition

This domain involves Dolol's (Acetaminophen's) primary action of modulating the cyclooxygenase (COX) pathway predominantly within the Central Nervous System (CNS). It functions as a reducing co-substrate for the enzyme, which lessens the synthesis of prostaglandins—key mediators of pyresis and nociception—resulting in the modulation of thermoregulatory set-point and altered nociceptive signal processing.


Modulation of Descending Serotonergic Pathways

This mechanism focuses on Dolol's effect on neurotransmitter systems, specifically by activating the descending serotonergic pathways that originate in the brain and project to the spinal cord. This pathway is a critical component of endogenous inhibitory circuits, and its enhancement promotes the inhibition of ascending nociceptive transmission from the spinal cord, influencing overall signal throughput.


Endocannabinoid and TRPV1 Receptor Engagement

This cluster involves Dolol's active metabolite, AM404, which engages components of the endocannabinoid system and the transient receptor potential vanilloid 1 (TRPV1) receptors. AM404 inhibits the reuptake of the endocannabinoid anandamide and activates TRPV1 receptors in the spinal cord, facilitating the downstream modification of nociceptive signaling within the CNS.

Dosage and Administration Information

Dolol (Acetaminophen) is officially administered via three distinct routes: oral (tablets, solutions), rectal (suppositories), and intravenous (IV) (infusion). The choice of administration route depends on the specific dosage form and clinical context, with the IV formulation being reserved for supervised settings.


Official Dosing and Frequency Guidelines

For healthy adults weighing 50 kg or more, the standard single oral dose is typically 650 mg to 1000 mg, to be administered every 4 to 6 hours as needed. A strict minimum of 4 hours must separate doses across all routes of administration. The total intake from all sources containing acetaminophen (prescription and non-prescription) must not exceed a maximum daily limit of 4000 mg (4 g) in 24 hours. Pediatric dosing is calculated on a weight-based formula (10–15 mg/kg per dose), with the total daily maximum limited to 75 mg/kg, not exceeding 4 g.

Specific Administration Instructions

Instruction Category Official Regulatory Statement of Use
Timing in relation to meals Oral formulations may be taken with or without food.
Preparation Requirements Liquid suspensions must be shaken well and measured only with the specific dosing device provided.
Population-Specific Rules For patients with severe renal impairment (kidney function), the official guidance recommends extending the dosing interval (e.g., to 6 hours or 8 hours).
IV Administration The intravenous solution is administered as a slow 15-minute infusion.

The drug is typically used on an as-needed (PRN), short-term basis for acute symptomatic relief, with self-treatment often recommended to not exceed three days without clinical guidance. These procedural constraints and dosage rules define the standardized approach to using the medicine.

Recent Clinical Evidence

Dolol (Acetaminophen): Recent Clinical Evidence


Evidence for Use in Mild to Moderate Pain

Research related to outcomes of physical discomfort relies primarily on Randomized Controlled Trials (RCTs) and systematic analyses. These studies are typically short-term, observing patients with episodic conditions such as headaches or post-operative discomfort. Research examined patient-reported experiences, monitoring outcomes related to pain intensity using standardized scales over specific time intervals. Findings describe group patterns related to short-term changes in pain intensity. The evidence base is largely limited to these acute, episodic uses, and there is limited information for long-term outcomes in patients requiring continuous pain management.


Evidence for Use in Reducing Fever (Antipyresis)

The medicine's antipyretic properties were evaluated in numerous RCTs across diverse age groups, including infants, children, and adults. Studies monitored outcomes related to systemic imbalance by measuring the magnitude and duration of the change in body temperature during episodes of high temperature associated with acute illnesses or vaccinations. Studies have reported measured changes related to a decrease in high body temperature within the immediate post-administration period. Uncertainty remains regarding the long-term effects and sustained physiological outcomes of routinely lowering a fever in specific patient groups.


The Research Landscape for Chronic Pain Conditions

Research that explored chronic conditions, such as osteoarthritis, typically relies on RCTs lasting several weeks. These studies examined outcomes related to physical discomfort and functional limitations using standardized patient scales. Systematic reviews reported that the magnitude of measured change in pain scores and functional status was often modest compared to placebo groups. Follow-up durations were limited for a chronic condition, and comparative research has reported that the magnitude of measured change was smaller in patients with more severe disease.


Research in Special Populations and Uncertainty

Research has evaluated this medicine in children, older adults, and unique contexts like prenatal exposure. The study of prenatal exposure relies on large-scale observational cohort studies, as RCTs are not ethically feasible. Initial observational findings were associated with certain neurodevelopmental measurements in children exposed during gestation. However, subsequent, more rigorous observational studies reported that these initial associations often did not persist once researchers accounted for underlying factors. A causal link has not been established. The overall evidence landscape contains gaps, particularly regarding long-term continuous use, where outcomes are not fully established in controlled trials.

Key Studies & References

  1. Assessment and management of fever in children and young people

Frequently Asked Questions (FAQ)

Common questions about Dolol (Acetaminophen) (FAQ)

Q: What is the main difference between Dolol (Acetaminophen) and ibuprofen?

A: Regulatory documents classify Acetaminophen as a non-opioid analgesic and antipyretic, meaning it acts primarily on pain and fever. Its main action is predominantly centered in the Central Nervous System (CNS). Ibuprofen, which is not Acetaminophen, belongs to a different drug class (NSAID) and acts on the body’s pain and inflammation mechanisms in both the CNS and the peripheral body tissues.

Q: How quickly does Dolol (Acetaminophen) start working?

A: According to official product information, the oral form of Acetaminophen is absorbed rapidly from the digestive tract. The onset of action, which is when the medicine begins to work, is generally reported to be around 37 minutes, or the medication reaches its highest level in the bloodstream within 30 to 60 minutes.

Q: How long does the effect of Dolol (Acetaminophen) usually last?

A: Official dosing guidelines indicate that the analgesic effect typically lasts for approximately 4 to 6 hours. This duration is consistent with the required interval for repeated dosing across various regulatory guidelines.

Q: Is Dolol (Acetaminophen) safe to use during pregnancy?

A: Regulatory guidance advises that the medicine should only be used during pregnancy if clearly needed, and it must be restricted to the lowest effective dose for the shortest duration. Some large-scale observational studies have suggested possible links between prenatal exposure and certain neurodevelopmental measurements; however, official sources report that a causal link has not been consistently demonstrated.

Q: Can children take Dolol (Acetaminophen)?

A: Acetaminophen is eligible for use in children over two years of age, adolescents, and adults. Pediatric dosing is calculated based on a child’s weight (mg/kg). Use in infants and neonates is limited and generally requires specific clinical protocols.

Q: Does alcohol interact negatively with Dolol (Acetaminophen)?

A: Official regulatory warnings focus on the serious risk of severe liver damage when Acetaminophen is used concurrently with chronic alcohol consumption. This risk is emphasized particularly when an individual consumes three or more alcoholic drinks per day while taking the drug.

Q: Can someone with kidney problems use Dolol (Acetaminophen)?

A: Regulatory documents advise caution for patients with kidney problems, particularly those with severe renal impairment (poor kidney function). For this population, official guidance recommends extending the dosing interval (for example, to every 6 or 8 hours) as a precaution for clearing the medicine.

Q: How does Dolol (Acetaminophen) work to reduce fever?

A: The mechanism involves Acetaminophen modulating a pathway in the Central Nervous System known as the cyclooxygenase (COX) pathway. By affecting this pathway, the medicine lessens the production of prostaglandins, which are compounds that influence the brain’s temperature control center, thereby facilitating the reduction of a fever.

Q: Can people with high blood pressure safely use Dolol (Acetaminophen)?

A: Official labeling does not list high blood pressure as a contraindication or absolute restriction. However, some evidence suggests that daily, long-term use of the maximum allowable dose has been associated with a modest increase in blood pressure.

Q: Can you become dependent on Dolol (Acetaminophen) if you take it often?

A: Acetaminophen is classified as a non-opioid analgesic and is not associated with physical dependence or addictive properties according to regulatory reviews. Official warnings related to frequent use focus on the critical risk of liver damage from taking too much over time, rather than dependence.

Q: What happens if you miss a dose of Dolol (Acetaminophen)?

A: Consumer information in regulatory documents generally advises that if a dose is missed, taking it as soon as it is remembered is an option. If it is almost time for the next scheduled dose, the guidance is generally to skip the missed dose and take only the next scheduled dose, respecting the minimum time separation between doses.

Q: Can Dolol (Acetaminophen) be used for menstrual cramps?

A: Official regulatory indications for use confirm that Acetaminophen is among the over-the-counter drugs indicated for providing temporary relief from general aches and pains, which includes discomfort associated with menstrual cramps.

Q: How does Dolol (Acetaminophen) get cleared out of the body?

A: The medicine is primarily processed, or metabolized, in the liver through specific chemical pathways. The resulting compounds are then mostly cleared from the body and excreted through the kidney, which defines the drug's elimination route.

Q: Is it safe to take Dolol (Acetaminophen) if I have a stomach ulcer?

A: Official safety warnings related to Acetaminophen use focus on the liver, and not on the primary risk of stomach ulcers or bleeding typically associated with other pain relievers. Unlike those other pain relievers, Acetaminophen's primary action does not target the enzymes that protect the lining of the digestive tract.

Q: Does Dolol (Acetaminophen) interact with common over-the-counter allergy medications?

A: Acetaminophen is often combined with other ingredients, like antihistamines and decongestants, in various multi-ingredient cold and allergy products. Regulatory warnings emphasize the importance of checking labels to ensure you do not inadvertently exceed the maximum daily limit by taking more than one product that contains Acetaminophen.

Q: Does Dolol (Acetaminophen) cause drowsiness?

A: Drowsiness is generally not listed as a common or serious side effect of single-ingredient Acetaminophen in regulatory documents. If drowsiness is noted when taking multi-ingredient products, it is typically attributed to the effects of other compounds, such as certain antihistamines, that may be present.

Q: Can Dolol (Acetaminophen) be taken while breastfeeding?

A: Regulatory bodies generally consider the use of Acetaminophen acceptable during lactation. Official sources indicate that the amount of the drug that transfers into breast milk is minimal and is significantly less than the dose that may be given directly to an infant.

Q: Are there different strengths of Dolol (Acetaminophen) available?

A: Yes, regulatory documents and product labels confirm that Acetaminophen is manufactured in various strengths depending on the form. This includes common oral doses such as 325 mg (standard strength), 500 mg (extra strength), and 650 mg (extended-release formulations).

Q: Is Dolol (Acetaminophen) used for purposes other than pain and fever?

A: The official, regulated indications for the single-ingredient preparation of Acetaminophen are limited to the symptomatic relief of pain (analgesia) and the reduction of fever (antipyresis).

Q: What is the typical time frame for the maximum concentration of Dolol (Acetaminophen) in the body?

A: According to pharmacokinetic data, the medicine typically reaches its peak concentration, or T max, in the blood plasma within 30 to 60 minutes after being taken orally.

Q: Is it possible for Dolol (Acetaminophen) to cause digestive upset?

A: While generally well-tolerated, the official safety information lists adverse events associated with overdose or toxicity that may involve digestive symptoms. These include nausea, vomiting, and pain in the upper right side of the abdomen, which are key warning signs of potential liver issues.

Q: Are there different formulations of Dolol (Acetaminophen), such as extended-release?

A: Yes, Acetaminophen is available in several formulations to support different routes of administration and dosing needs. These formulations include immediate-release (IR) tablets and, in some cases, extended-release (ER) tablets.

Q: Can taking Dolol (Acetaminophen) affect the results of a blood test?

A: Some official documentation notes that Acetaminophen may potentially lead to a falsely elevated measurement of certain laboratory values, most notably liver enzymes (ALT/AST). This can occur even in the absence of actual liver injury.

Q: Is Dolol (Acetaminophen) associated with any skin reactions?

A: Yes, official regulatory safety warnings advise that Acetaminophen may cause severe cutaneous adverse reactions (SCARs), which are rare but serious. These reactions can include signs like skin reddening, rash, and blisters, which require immediate discontinuation and medical help.

Q: Is Dolol (Acetaminophen) a drug that requires a prescription in some cases?

A: While Acetaminophen is widely available over-the-counter (OTC) in oral forms, the intravenous (IV) formulation is regulated as a prescription-only drug. This IV preparation is specifically intended for use in supervised clinical settings.

How should Dolol (Acetaminophen) be stored and disposed of?

The official storage and disposal requirements for acetaminophen (Dolol) are defined to maintain product stability and ensure public safety.


Storage Conditions

Acetaminophen must be stored at a temperature below 30 C in a dry place, protected from light and moisture. Liquid or injectable forms should not be frozen. The product must be kept out of the sight and reach of children and remain in its original container, which should be kept tightly closed.


Disposal Instructions

Unused or expired product must be disposed of in accordance with local requirements. The preferred method is using an authorized drug take-back program. If this is unavailable, the medicine should be mixed with an undesirable substance (such as dirt) and placed in a sealed container before being discarded with household trash. Acetaminophen is not on the FDA flush list.

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

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