Dolantina

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Dolantina

Method of action: Analgesic

Treatment option:

Medically reviewed

Laura Arias

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 Dolantina

Quick Facts: Dolantina (Pethidine)

Property Description
Active ingredient Pethidine (Meperidine)
Form Solution for injection (parenteral)
Pharmacological class Opioid analgesic
Common use Moderate to severe pain management
Origin Synthetic

Defining Dolantina: What Type of Analgesic is Pethidine?

Dolantina is a powerful medication defined by its active pharmaceutical ingredient, Pethidine, which is also recognized internationally as meperidine. It is classified as a synthetic opioid analgesic, belonging specifically to the phenylpiperidine class of compounds. Pethidine is a chemically synthesized molecule, confirming its non-natural, synthetic origin, and is designated strictly as a prescription-only medication. As a mu-opioid receptor agonist, its mechanism is clinically recognized for its potent central action on pain signals.

Composition, Formulation, and Differentiation

The standard preparation is a sterile solution for injection, consisting of Pethidine hydrochloride dissolved in an aqueous solution. This specialized parenteral formulation is a key differentiating feature, allowing for rapid and controlled systemic delivery, which contrasts with slower-acting oral compounds. The medicine is supplied as a single-agent product for administration via a non-oral route. This form is strategically used in scenarios requiring immediate and reliable analgesic effect, such as during monitored post-operative recovery.

The General Purpose of Dolantina in Pain Management

The essential function of Dolantina is to provide highly effective analgesia by modulating pain perception centrally. The drug is reserved for managing moderate to severe pain, where its therapeutic purpose is to mitigate suffering when established weaker analgesics are insufficient. Its therapeutic value in clinical pain relief and essential care is well-established. This core benefit, a powerful and reliable intervention against acute pain stimuli, underscores its role in monitored medical settings.

Regulatory References

  1. World Health Organization (WHO) Model List of Essential Medicines

What side effects are possible with Dolantina?

Possible Side Effects and Safety Information

The official safety profile of Dolantina (Pethidine) outlines potential adverse effects classified by frequency and body system, as documented in government regulatory sources like the FDA and SmPC.

Classification Examples of Officially Documented Effects
Common Effects Nausea, vomiting, sedation, dizziness, constipation, and sweating are frequently observed and noted in regulatory labeling.
System Classes Adverse effects are documented across Nervous system disorders (e.g., confusion, tremor, headache), Gastrointestinal disorders, and Cardiac/Vascular disorders (e.g., hypotension, changes in heart rate).

Serious and life-threatening adverse reactions are explicitly highlighted in prescribing information, including the risk of life-threatening respiratory depression, particularly upon initiation or dosage increase. Pethidine is also noted to carry a risk of Serotonin Syndrome when administered with certain other serotonergic agents, which is a severe reaction that can involve agitation, fever, and neuromuscular hyperactivity.

Special Population and Exposure Safety Notes

Safety notes detail restrictions and considerations based on patient status and exposure duration:

  • Toxic Metabolite Risk: The drug's active metabolite, normeperidine, can accumulate, especially with repeated administration or in patients with renal impairment, increasing the risk of neurotoxicity and seizures (convulsions), a key safety constraint.
  • Organ Impairment: Use is generally restricted in patients with severe renal impairment or severe hepatic impairment due to altered drug clearance and the increased risk of metabolite accumulation.
  • MAOI Restriction: A critical safety limitation is the absolute restriction against use in patients who are receiving or have recently received (within 14 days) Monoamine Oxidase Inhibitors (MAOIs), due to the high risk of fatal reactions.
  • Older Adults: Increased risk of certain adverse reactions, including respiratory depression, is noted for older patients, often requiring caution in application.

The safety information, structured by these regulatory domains, clearly defines the risks associated with the medicine, particularly emphasizing the critical safety concerns tied to respiratory function, accumulation, and severe drug interactions.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Dolantina (Pethidine) overdose centers on severe, life-threatening manifestations that necessitate immediate emergency intervention. Documented overdose presentations primarily involve Profound Central Nervous System (CNS) and Respiratory Depression.

Signs of this critical state include slowed or shallow breathing, long pauses between breaths leading to apnea, loss of consciousness, and progression to coma. Systemic effects involve the cardiovascular system, presenting as slow heartbeat and hypotension, alongside clinical signs like cyanosis (bluish skin color) and cold, clammy skin.

A distinct set of documented presentations involves CNS hyperexcitability, which may include convulsions or seizures, tachycardia, and hypertension. This pattern is linked to the toxic accumulation of the metabolite normeperidine, a specific risk noted for patients with renal impairment. Elderly or debilitated patients are also identified as being at an increased risk of severe respiratory depression.

Due to the risk of fatal respiratory depression, regulatory bodies mandate immediate medical attention when any overdose symptoms occur. Caregivers are required to call emergency services and administer the rescue medication, Naloxone, if available, followed by continuous monitoring until help arrives.

Therapeutic Uses of Dolantina

What Dolantina Treats: Main Uses and Benefits

The core therapeutic purpose of Dolantina (Pethidine) is considered relevant for the management of moderate to severe pain. This medication is relevant in contexts involving heightened systemic burden and significant symptom expression.


This medication is generally used to help with pain when symptoms are intense and classified as moderate to severe. It is applied across domains where additional symptomatic support is needed, such as pain arising from trauma, postoperative management, and acute medical conditions including renal colic or biliary colic. Dolantina is also relevant for easing symptoms in specialized clinical settings, most notably providing obstetrical analgesia to assist with the severe, cyclical pain associated with labor and delivery. Furthermore, its use may assist with addressing specific physical manifestations like postanesthetic shivering.

“This medication is applied in addressing symptoms related to heightened physiological activity and helps ease the overall symptom burden during periods of heightened discomfort.”

This application assists with maintaining a sense of stability when symptoms are more noticeable in monitored contexts, supporting the patient during difficult episodes by easing distress and providing supportive relief.


Quick Fact: Relief for Acute Pain

Property Description
Primary Focus Symptomatic relief for moderate to severe acute pain
Contextual Use Obstetrics and Perioperative care
Specific Symptom Applied in addressing postanesthetic shivering
Patient Benefit Contributes to easing discomfort and eases distress

Eligibility and Restrictions for Use

Eligibility to Use Dolantina (Meperidine)

Official regulatory documents establish strict criteria for the use of Dolantina, based on population, coexisting conditions, and recent medication history. The medication is generally reserved for patients with acute pain severe enough to necessitate an opioid and for whom alternative treatments are inadequate or not tolerated. It is not indicated for the treatment of chronic pain.

Classification Ineligible Patient Populations & Conditions (Contraindicated)
Drug Interaction Concurrent use of Monoamine Oxidase Inhibitors (MAOIs) or use within the last 14 days.
Respiratory Significant respiratory depression; acute or severe bronchial asthma in an unmonitored setting.
Gastrointestinal Known or suspected gastrointestinal obstruction, including paralytic ileus.
Allergy Known hypersensitivity to meperidine or any product ingredient.

Other Restrictions and Special Considerations

  • Organ Impairment: Use requires special caution and monitoring in patients with severe renal or hepatic impairment due to the accumulation of a potentially toxic metabolite.
  • Age: Safety and efficacy have not been fully established in pediatric patients. Older adults require close monitoring due to an increased risk of side effects from age-related organ changes.
  • Pregnancy/Lactation: Use during labor or delivery is generally not recommended. Nursing mothers must weigh the potential for serious adverse reactions in the infant before use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Pethidine (Dolantina) is structured by documented risks involving specific drug classes and pharmacokinetic pathways.

Medicinal product categories with documented interactions include Monoamine Oxidase Inhibitors (MAOIs), Central Nervous System (CNS) Depressants, Serotonergic Drugs, Mixed Agonist/Antagonist Opioids, and Cytochrome P450 (CYP) 3A4 and 2B6 modulators. The mechanistic basis of these interactions is described as Pharmacodynamic Synergism, leading to additive CNS depression, and Pharmacokinetic Alteration via CYP3A4-mediated metabolism, which officially affects meperidine plasma concentration.

The interaction with MAOIs is a formal contraindication that requires a mandatory 14-day separation period after the inhibitor is discontinued. Co-administration with other CNS depressants, including the substance alcohol, is documented to carry a risk classified as Fatal/Life-Threatening Risk, potentially leading to profound sedation, respiratory depression, coma, and death. Similarly, the co-use with Serotonergic Drugs is associated with the potentially life-threatening risk of Serotonin Syndrome.

Interactions with CYP3A4 inhibitors are officially noted to increase meperidine plasma concentrations. Caution is specified for elderly and debilitated patients, as well as those with severe hepatic or renal impairment, due to their heightened susceptibility to adverse outcomes from all interactions. This structure establishes clear restrictions and cautions based on documented additive effects and concentration-altering risks.

Mechanism of Action

Dolantina (pethidine/meperidine) functions primarily as an agonist at central mu-opioid receptors (MOR). Binding to the MOR, a G-protein coupled receptor (GPCR), initiates the exchange of GDP for GTP on the G-protein complex. This activation inhibits adenylyl cyclase, resulting in a reduction of intracellular cyclic AMP (cAMP) levels.

Downstream, this action modulates ion conductance by promoting the opening of G-protein coupled inwardly rectifying potassium channels ( K IR) and inhibiting N-type voltage-gated calcium channels ( Ca v). These ionic shifts hyperpolarize the neuronal membrane and decrease calcium influx into the presynaptic terminal.

This presynaptic inhibition reduces the release of excitatory and nociceptive neurotransmitters, including substance P and glutamate, in the dorsal horn of the spinal cord and other central nervous system areas. System-level physiological consequences involve modulation of afferent nociceptive transmission and activation of descending inhibitory pathways. The drug also exhibits kappa-opioid receptor agonism, local anesthetic activity through sodium channel interaction, and acts as an inhibitor of the serotonin and norepinephrine transporters.

Dosage and Administration Information

Official Administration Routes and Schedules

Dolantina (Pethidine) is available for administration via multiple routes, primarily parenteral and oral. The parenteral routes include intramuscular (IM), subcutaneous (SC), and slow intravenous (IV) injection, utilizing the sterile solution form. The oral route involves tablets or an oral solution. Standard adult dosing for pain relief is typically 50 mg to 150 mg per single dose (IM, SC, or PO), administered as needed (PRN) every 3 to 4 hours. The maximum recommended adult dose is limited not to exceed 600 mg within 24 hours.

Preparation and Procedural Constraints

Administration involves specific procedural constraints. For the oral solution, the dose is diluted in a half glass of water before ingestion, a procedural step used to prevent localized mucous membrane effects. Intravenous administration requires the drug to be administered very slowly and often in a diluted solution. Use of the drug is generally confined to short-term administration for acute pain.

Population-Specific Dosing Rules

Dose adjustments are utilized for certain patient groups. Initial doses for older adults are started at the lower end of the dosing range, and the patient must be carefully monitored. For pediatric patients, the dose is weight-based (e.g., 1.1 mg/kg to 1.8 mg/kg). Furthermore, the use of continuous IV infusion is specifically contraindicated in patients with renal impairment. If discontinuation is required in physically dependent individuals, the dosage is gradually reduced (tapered).

Recent Clinical Evidence

Dolantina: Recent Clinical Evidence

Dolantina is the trade name for the opioid analgesic pethidine (also known as meperidine). It is classified as a strong opioid, often reserved for the management of moderate to severe acute pain. Clinical evidence on Dolantina focuses primarily on its use in short-term settings, such as postoperative pain and certain types of procedural or cancer-related pain, where rapid onset of analgesia is required.


Analgesic Efficacy and Profile

Studies comparing pethidine to other strong opioids, such as morphine and hydromorphone, suggest that pethidine may be less effective at relieving severe pain. Early assumptions that pethidine was superior for pain associated with biliary or renal spasms due to anticholinergic effects were later found to be inaccurate in in vivo studies. Research confirms its relatively short duration of clinical effect, often necessitating administration at frequent intervals (e.g., every 4 hours).


Safety and Metabolite Concerns

The primary focus of modern clinical research concerning pethidine is its safety profile, particularly the risk associated with its metabolite, norpethidine. Repeated dosing or use in patients with renal impairment can lead to the accumulation of norpethidine. This accumulation is strongly linked to Central Nervous System (CNS) toxicity, which may manifest as tremors, myoclonus, delirium, and seizures. Due to this risk, contemporary guidelines generally restrict Dolantina's use to short-term therapy (often less than 48 hours) and favor alternative opioid analgesics with more favorable safety profiles for chronic pain management.

Frequently Asked Questions (FAQ)

Common questions about Dolantina (FAQ)


Q: What is the risk of dependence or addiction with Dolantina?

Official regulatory labeling indicates that, like other opioid analgesics, this medicine carries a risk of developing physical or mental dependence (addiction). Due to this recognized risk, the medicine is subject to strict controls and is typically subject to regulatory monitoring and risk mitigation strategies.


Q: Is Dolantina considered a painkiller or something else?

Dolantina is primarily classified as a potent opioid analgesic, meaning it is a type of strong painkiller. However, regulatory-cited studies show that the drug also has other documented activities in the body, including antimuscarinic effects, local anesthetic activity, and action on certain neurotransmitter transporters.


Q: Is Dolantina the same type of medicine as morphine or codeine?

Dolantina (pethidine/meperidine) belongs to the same general pharmacological class as morphine and codeine—all are opioid analgesics. However, official information describes meperidine as a synthetic compound that differs from the others in its chemical structure, rate of onset, and duration of effect in the body.


Q: How quickly does Dolantina start working?

According to official product information, the medicine is described as having a rapid onset of action. The effects generally begin within minutes after administration, especially when given as an injection, a characteristic that is often required in acute pain settings.


Q: How long does the effect of Dolantina usually last?

Regulatory prescribing information notes that the medicine has a relatively short duration of action. For this reason, administration is typically required every 3 to 4 hours, which is described in official product information.


Q: What kind of research has been done on Dolantina?

Clinical research has focused on the drug's efficacy for acute pain management, including its use during labor and delivery. A major area of study detailed in official warnings is its safety profile, particularly the risk of neurotoxicity associated with the accumulation of its metabolite, normeperidine.


Q: Are there any studies about Dolantina's use in specific patient populations?

Yes, official regulatory information provides special considerations and risk information related to several specific populations. This includes warnings and guidance for older patients, pediatric patients, and those with severe renal or hepatic impairment, due to increased risks of drug or metabolite accumulation.


Q: Is it normal to feel sleepy or dizzy after taking Dolantina?

Dizziness and sleepiness, referred to as sedation, are documented in regulatory labeling as common side effects of the medicine. This indicates that drowsiness or lightheadedness are frequently reported occurrences associated with its use.


Q: What happens if I stop taking Dolantina suddenly after regular use?

Sudden discontinuation after regular use in physically dependent individuals may lead to withdrawal side effects, which include agitation, headache, nausea, and anxiety. Regulatory advice notes that official guidelines recommend gradually reducing the dosage in dependent individuals.


Q: Can Dolantina cause a change in mood or anxiety levels?

Regulatory documents note that Central Nervous System (CNS) effects like confusion, delirium, or paranoia have been reported in rare cases. Additionally, anxiety and irritability are documented as symptoms that may occur as part of the withdrawal syndrome if the medicine is discontinued after regular use.


Q: Is it true that Dolantina can affect breathing?

Yes, official safety warnings strongly highlight that the medicine can cause respiratory depression. This condition is described as a life-threatening risk, especially when beginning treatment or when the dosage is increased.


Q: Is Dolantina used during pregnancy or while breastfeeding?

Regulatory information generally advises against the use of the medicine during labor and delivery. It also states that nursing mothers should consider the potential for serious adverse reactions in the infant before deciding whether or not to use the medicine.


Q: Why is Dolantina used in hospitals but sometimes not prescribed for home use?

The drug is typically reserved for short-term management of moderate to severe acute pain. Its safety profile, which includes risks of respiratory depression and neurotoxicity from its active metabolite, often requires patient monitoring, which is more readily available in a monitored setting.


Q: If I miss a dose of Dolantina, what typically happens?

Because the medicine is typically used for pain on an as-needed basis (PRN), the patient information usually suggests that an extra amount of medicine should not be taken to make up a missed dose. If it is almost time for the next scheduled dose, regulatory guidance indicates that the missed dose is typically skipped.


Q: Do side effects from Dolantina go away over time?

While some common effects may lessen as the body adjusts, official warnings state that the drug's active metabolite, normeperidine, can accumulate in the body with repeated dosing. This accumulation can increase the risk of serious side effects like neurotoxicity and seizures, even with continued use.


Q: Are there any long-term effects associated with using Dolantina?

Regulatory warnings state that using the drug for extended periods may increase the risk of toxicity, such as seizures, due to the accumulation of the metabolite normeperidine. Additionally, adrenal insufficiency is noted as a risk of long-term opioid use.


Q: Can taking Dolantina affect my ability to drive or operate machinery?

Yes, regulatory bodies warn that the medicine may impair the mental and physical abilities needed to perform potentially hazardous tasks. This is due to common side effects like drowsiness, dizziness, and blurred vision.


Q: Is it safe to take Dolantina with common over-the-counter cold medicines?

Regulatory warnings indicate that caution is necessary, as the medicine should not be taken with other Central Nervous System (CNS) depressants. This includes certain medicines for allergies or colds that contain antihistamines, which can cause additive effects like profound sedation and respiratory depression.


Q: Is there a generic version of Dolantina available?

Yes, the active ingredient, pethidine (meperidine), is approved for generic formulations. This means that generic products are generally available for certain approved product types, such as solutions for injection.


Q: Why is Dolantina sometimes restricted or hard to get?

The drug is regulated as a Schedule II controlled substance, a classification that indicates a high potential for abuse and dependence, leading to strict restrictions on its prescribing. Furthermore, medical guidelines often restrict its use to short periods due to the safety risks associated with its metabolite.


Q: What is the difference between Dolantina and fentanyl?

Both Dolantina and fentanyl are classified as synthetic opioid analgesics, but they differ significantly in potency. Regulatory documents indicate that meperidine is much less potent than fentanyl on a milligram-to-milligram basis.


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

Official administration guidelines state that the oral solution must be diluted before ingestion. For tablet forms, official safety warnings generally advise against crushing, chewing, or breaking them, due to the risk of rapid release of the medicine.


Q: Why do some people say Dolantina is controversial?

Concerns regarding the drug's safety profile have led many medical guidelines to recommend strict limits on its use. This is primarily due to the high risk of neurotoxicity and seizures caused by the accumulation of its active metabolite, normeperidine.


Q: Is it normal to build up a tolerance to the effects of Dolantina?

Yes, regulatory warnings confirm that repeated use of the medicine may result in the development of tolerance. This means that a patient may eventually require a higher dose to achieve the same analgesic effect.


Q: Are there different strengths of Dolantina available?

Yes, the drug is available in multiple strengths and forms, including oral tablets (such as 50 mg and 100 mg) and solutions for injection (which come in various concentrations, such as 25 mg/mL, 50 mg/mL, 75 mg/mL, and 100 mg/mL).


Q: Is it possible to be eligible for Dolantina but still be told not to use it?

Yes, regulatory warnings note that while a patient may have pain severe enough to warrant opioid use (eligibility), contraindications such as severe renal impairment or concurrent use of MAOIs formally prohibit its use due to the high risk of severe adverse reactions.


Q: Does Dolantina cause constipation, and if so, how is it typically managed?

Constipation is documented as a commonly reported side effect. Official patient guidelines often describe management strategies such as increasing dietary fiber and fluid intake, and the use of specific stimulant or osmotic laxatives.


Q: Is it normal if Dolantina doesn't seem to be working as expected?

Regulatory-cited evidence suggests that Dolantina may be less effective at relieving severe pain than some other strong opioid medications. Furthermore, if the drug does not seem to be working, it may be a sign that the toxic metabolite, normeperidine, is accumulating, requiring clinical evaluation.


Q: What are the signs of too much Dolantina in the system?

Signs of potentially too much medicine or metabolite in the system may include slow or shallow breathing, severe drowsiness, cold/clammy skin, decreased awareness, or signs of neurotoxicity such as tremors and seizures. These are considered serious warning signs in official documents.


Q: What is known about the half-life of Dolantina?

The half-life of the main drug is relatively short, typically 2 to 5 hours. However, regulatory warnings emphasize that its active metabolite, normeperidine, has a much longer half-life (15 to 30 hours), which can lead to accumulation in the body.


Q: Does Dolantina show up on standard drug tests?

Yes, as an opioid analgesic (meperidine), the drug or its metabolites can be detected in various drug screening options. Its classification as a controlled substance supports its inclusion in many standard testing panels.

How should Dolantina be stored and disposed of?

How to Store and Dispose of Dolantina?

The storage and disposal of Dolantina (Pethidine) injection must adhere strictly to regulatory mandates for product stability and controlled substances.

Requirement Official Instruction
Storage Conditions Store at controlled room temperature (e.g., 20 C to 25 C) and protect from light and moisture. Do not freeze.
Packaging Rules Must be kept in the original container and stored tightly closed and securely.
Stability Check Visually inspect the solution before use for particulate matter or discoloration (e.g., darker than pale yellow); do not use if observed.
Child Safety Mandatory to keep the medication out of the sight and reach of children and secured from unauthorized access.
Disposal Method Unused or expired medication should be disposed of via a drug take-back program. If this is not readily available, the FDA authorizes flushing down the toilet to prevent accidental ingestion, which can be fatal.

These official statements ensure both the quality of the injectable solution and compliance with controlled substance security protocols.

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

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