Remimed

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Remimed

Treatment option: Pain Management, Sedation

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 Remimed

Property Description
Active ingredient Remifentanil Hydrochloride
Form Lyophilized Powder for Intravenous Injection
Pharmacological class Opioid Analgesic (mu-opioid receptor agonist)
General Use Adjunct to General Anesthesia
Origin Synthetic (Anilidopiperidine Derivative)

Remimed is a potent, prescription-only pharmaceutical preparation, recognized in clinical practice for its high degree of analgesic control. Its active substance is Remifentanil Hydrochloride, a chemically synthesized compound classified as an ultra short-acting mu-opioid receptor agonist. This medication is unique among its class for its immediate onset and rapid clearance. The drug's mechanism of action, which involves the activation of specific pain receptors in the central nervous system, effectively blocks the transmission of severe pain signals.

The medicine is supplied as a lyophilized powder for intravenous injection, which is reconstituted into a solution immediately prior to use. This single-ingredient format enables precise, controlled administration in a sterile hospital setting. What distinguishes Remifentanil is its designation as an esterase-metabolized opioid. This characteristic means the drug is rapidly broken down by non-specific enzymes found throughout the blood and tissues, ensuring organ-independent clearance. This rapid metabolism is a key differentiating factor from longer-acting opioids, as it results in a more predictable duration of effect.

Remimed's principal therapeutic role is to provide intense, rapidly controllable analgesia as a critical adjunct to general anesthesia during surgery. Clinicians utilize its ultra-short duration of effect to precisely manage a patient’s pain level throughout a surgical procedure. This predictable metabolic pathway is clinically recognized for ensuring that the analgesic effect quickly subsides when the infusion is stopped, supporting a prompt and managed transition to post-operative care and reducing residual narcotic effects.

What side effects are possible with Remimed?

Possible side effects and safety information

The safety profile of Remimed (Remifentanil Hydrochloride) is based on official regulatory documentation that classifies observed adverse reactions by frequency and affected body system. As an ultra short-acting mu-opioid receptor agonist, its safety characteristics center on effects involving the cardiovascular and respiratory systems during and immediately following administration.

Adverse reactions classified as Very Common (occurring in ge 1/10 patients) include Hypotension (low blood pressure), Bradycardia (slowed heart rate), Skeletal muscle rigidity, Nausea, and Vomiting. The occurrence of Postoperative pain is also classified at this frequency.

Events categorized as Common (occurring in ge 1/100 to <1/10 patients) involve Apnoea (transient cessation of breathing), Respiratory depression, Hypertension (high blood pressure), Dizziness, and Pruritus (itching). Severe Respiratory Depression is a fundamental safety concern associated with the use of this medicine.

Serious adverse reactions documented in regulatory text include Asystole (cardiac arrest) and Anaphylaxis, which are classified as Rare (ge 1/10,000 to <1/1,000). Concerns such as Seizures, Drug Dependence, Tolerance, and Withdrawal syndrome have been reported during post-marketing use, and their frequency is currently classified as Not Known (cannot be estimated from the available data). Withdrawal syndrome is particularly noted after prolonged administration and abrupt discontinuation.

Population-Specific Safety Notes are outlined in the official labeling. Older adults (patients over 65 years of age) may exhibit greater sensitivity to the drug's effects. However, due to its unique, organ-independent metabolism, patients with renal impairment typically do not require dose adjustments.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory documents define the overdose profile of Remimed (Remifentanil) by focusing on acute, life-threatening depressions of vital functions.

Property Official Regulatory Statement
Documented overdose presentations Profound sedation, life-threatening respiratory depression, circulatory depression, hypotension, bradycardia, and skeletal muscle rigidity.
Physiological systems affected Respiratory System, Central Nervous System, Cardiovascular System.
Dose-related or exposure-related factors Overdose risk is increased with co-administration of Central Nervous System (CNS) depressants.
Population-specific overdose notes Neonates must be monitored for excessive sleepiness and difficulty breathing if the medicine is administered to the mother during labor.
When immediate medical help is required Seek medical attention immediately upon experiencing symptoms of extreme sleepiness, difficulty breathing, or unresponsiveness.
Classification Official Regulatory Statement
Severity classification The primary adverse outcomes are classified as life-threatening (respiratory depression, coma, death).
Regulatory basis Based on official Prescribing Information / Summary of Product Characteristics (SmPC) requirements.

Official overdose statements:

  • Overdose may present as life-threatening respiratory depression, profound sedation, coma, and circulatory depression.
  • Immediate emergency action is required, beginning with the immediate discontinuation of the infusion.
  • An opioid antagonist must be administered for clinically significant depression symptoms and is the documented procedural measure for reversal.
  • Supportive management measures are specified for associated symptoms, such as ephedrine or anticholinergic drugs for bradycardia.

Connection to the overall overdose profile: Regulatory documents define the overdose profile by detailing the expected severe physiological manifestations, necessitating a rapid, mandated response. This includes the required administration of an opioid antagonist to reverse clinically significant effects. The occurrence of profound sedation or severely slowed breathing is the explicit trigger for seeking urgent medical attention.

Therapeutic Uses of Remimed

Medications within this therapeutic category are generally used to provide symptomatic relief across key domains. Remimed is commonly used across conditions presenting with acute or disruptive symptom patterns.


Targeted Relief of Discomfort

Remimed is commonly used to help manage symptoms related to physical discomfort and systemic imbalance. This includes relief for symptoms such as pain, inflammation, swelling, and fever, which may appear suddenly or intensify over time. The medication is applied in scenarios where additional management of discomfort is required, such as during inflammatory flare-ups or recovery from minor injuries.

“Remimed is relevant in contexts marked by increased discomfort or tension, providing support that helps ease the overall symptom burden.”

Symptom Focus: Pain and Fever

The support provided by Remimed may assist with comfort during periods of heightened symptoms and supports general well-being when discomfort interferes with daily functioning. It is relevant when short-term symptomatic assistance may be appropriate for these challenging symptomatic phases.

Eligibility and Restrictions for Use

Remimed (Remifentanil Hydrochloride) eligibility is strictly defined by government-approved labeling, focusing on patient population and clinical setting.

Eligibility Scope

Population Category Eligibility Status (Regulatory Wording)
Allowed Populations Adults and pediatric patients (aged 1–12 years) for general anesthesia. Adults for analgesia in the ICU (mechanically ventilated).
Contraindicated Patients with known hypersensitivity to remifentanil or other fentanyl derivatives. Forbidden for epidural or intrathecal administration. Must not be used as the sole agent for anesthesia.
Not Recommended Infants under one year of age for use in the ICU setting. Pediatric patients for postoperative analgesia or monitored anesthesia care (MAC). During labor or Cesarean section.

Age- and Condition-Specific Rules

  • Older Adults (Over 65 years): Eligible, but the official label requires the starting infusion rate to be decreased by 50% due to heightened sensitivity.
  • Renal/Hepatic Impairment: No dose adjustment is necessary for patients with kidney or liver impairment, as the medicine's clearance is organ-independent.
  • Pregnancy and Lactation: Use during pregnancy is conditional, permitted only if the potential benefit justifies the potential risk of fetal harm. It is recommended that breastfeeding is stopped for 24 hours after administration.

The regulatory documents establish eligibility based on both absolute exclusions and conditional use, ensuring the medicine is administered only within its defined population parameters in a fully monitored setting.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Remifentanil Hydrochloride is primarily structured by pharmacodynamic (PD) interactions, which are characterized by additive effects on the central nervous system and cardiovascular function. Consistent with its unique clearance pathway via non-specific blood and tissue esterases, regulatory documentation notes a lack of significant pharmacokinetic (PK) interactions involving the Cytochrome P450 enzyme system or major drug transporters.

Interaction Classification Documented Pattern
Pharmacodynamic Potentiation Additive CNS depressant effects leading to increased risk of profound sedation, respiratory depression, coma, or death.
Serotonergic Risk Potential for Serotonin Syndrome when combined with other serotonergic agents.

Official Interaction Statements

Co-administration with Central Nervous System (CNS) Depressants, a category including general anesthetics, sedatives, benzodiazepines, and alcohol, results in additive CNS depressant effects. This regulatory classification highlights the high risk associated with this combination. Similarly, concurrent use of Serotonergic Drugs (e.g., SSRIs, SNRIs, MAOIs) is documented for the potential to cause Serotonin Syndrome, a serious PD outcome. The profile also notes an increased risk of hypotension and bradycardia when used alongside Antihypertensives due to additive PD effects. A key population-specific consideration exists for elderly patients, where the risk and severity of PD interactions leading to respiratory and CNS depression may be heightened.

Mechanism of Action

Selective mu-Opioid Receptor Activation and Nociception Blockade

The mechanism initiates with the high-affinity, full activation of mu-opioid receptors on key neurons within the spinal cord and brain. This binding event engages inhibitory G-proteins, which leads to the functional suppression of the nerve cell membrane through Potassium efflux and the closing of Calcium channels. These cellular events prevent the release of pain-transmitting neurotransmitters (like Substance P), blocking the ascending nociceptive signals and producing a state of antinociception.

⏳ Ultra-Rapid, Esterase-Dependent Mechanism of Inactivation

The molecule possesses a unique chemical structure that subjects it to immediate and continuous breakdown by non-specific esterases—enzymes widely distributed throughout the body's plasma and tissues. This metabolic clearance mechanism functions independently of major organs, which results in the active substance being almost instantaneously rendered inactive when its supply is stopped. This rapid enzymatic hydrolysis dictates the time course, leading to a rapid reduction in systemic concentration and functional effect of all resulting physiological effects, including antinociception and central respiratory modulation.

Dosage and Administration Information

Remimed is supplied as a lyophilized powder for injection and is for Intravenous (IV) use only. Due to its ultra short duration of action, the medicine must be administered solely via a calibrated infusion device as a continuous infusion in a fully monitored setting. The powder requires both reconstitution and dilution to a specified concentration before the resulting solution is ready for administration.

The dosing regimen is calculated based on body weight and highly individualized to the patient's acute needs throughout a procedure. For Induction of Anesthesia, a continuous IV infusion is typically initiated at a rate of 0.5 to 1 mu g/kg/min. During Maintenance of Anesthesia, the continuous infusion rate is generally within the range of 0.05 to 2 mu g/kg/min. Supplemental bolus doses of 0.5 to 1 mu g/kg are permitted during the maintenance phase but are restricted from use in non-intubated patients.

A key administration principle is the requirement for rapid titration; the infusion rate may be adjusted upward (in 25% to 100% increments) or downward (in 25% to 50% decrements) every two to five minutes to maintain the intended effect. For Geriatric Patients (over 65 years), the starting dose must be reduced by 50%. Conversely, no dosage adjustment is required for patients with impaired kidney or liver function, reflecting the drug's organ-independent clearance. Upon discontinuation, the IV tubing must be immediately cleared to prevent inadvertent delayed administration of any residual volume.

Recent Clinical Evidence

Research evidence / Overview of studies for Remimed


Evidence for Use as an Adjunct to General Anesthesia

The majority of research exploring the role of Remimed in the operating room consists of numerous large-scale Randomized Controlled Trials (RCTs) and comprehensive systematic reviews. These studies examined its role as an adjunct to general anesthesia. Researchers monitored variables related to physical discomfort and physiological strain or stress during the procedure. Metrics used in studies included consciousness recovery time, time to extubation, and duration of Post-Anesthesia Care Unit (PACU) stay.

Findings describe patterns observed in the studies regarding measured recovery times. Research highlights measured changes during the study period concerning physiological stability. Studies monitored the use of additional analgesic medication immediately following the procedure, and some findings described patterns of increased need in the hours after the infusion was stopped.


Studies in Acute Pain Management Contexts

Research also examined Remimed's role in specific acute contexts. Studies explored where its use as an analgesic and sedative for mechanically ventilated critically ill patients was evaluated in the Intensive Care Unit (ICU). These trials monitored systemic or functional imbalance by looking at outcomes such as the overall duration of mechanical ventilation and ICU length of stay. Findings were mixed across the available systematic reviews.

Second, Remimed was studied as an intervention during labor in women. Researchers monitored patient-reported outcomes, including pain intensity scores and measured maternal satisfaction levels. Studies reported patterns in measured pain intensity scores, but satisfaction scores appeared lower than those reported for techniques like epidural pain control. Comparative evidence is lacking to definitively assess equivalence with neuraxial techniques.


Research Gaps and Remaining Uncertainty

Evidence quality varies across studies due to the vast array of surgical procedures and patient heterogeneity in the ICU setting. Research has also monitored variables related to pain sensitivity, sometimes called opioid-induced hyperalgesia (OIH), after infusion was stopped. However, certainty remains low in the scientific community regarding the potential causes and clinical implications of OIH. Follow-up durations were primarily limited to the immediate post-infusion period (e.g., within 24 hours), meaning long-term effects are not fully established by the existing evidence base.

Key Studies & References

  1. Pharmacological Efficacy of Intravenous Magnesium in Attenuating Remifentanil-Induced Postoperative Hyperalgesia: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
  2. ICU patients receiving remifentanil do not experience reduced duration of mechanical ventilation: a systematic review of randomized controlled trials and network meta-analyses based on Bayesian theories

Frequently Asked Questions (FAQ)

Common questions about Remimed (FAQ)


Q: How long does it usually take for Remimed to start working?

According to the official product information, Remimed is described as having a rapid onset of action and a short latency to reach its peak effect. The drug is unique because its rapid breakdown by enzymes means its analgesic effects begin and stop very quickly upon the start or cessation of the infusion.


Q: What is the typical timeframe to see the full effect of Remimed?

Regulatory documents state that the drug exhibits a rapid onset and a short latency to reach its peak effect. This maximum functional effect typically occurs within 3 to 5 minutes after a single bolus dose or an increase in the continuous infusion rate.


Q: Do I have to take Remimed at a specific time of day?

Regulatory information confirms that Remimed is only for use in a monitored clinical setting. Official documents clarify that Remimed is for Intravenous (IV) use only and must be administered as a continuous infusion by a healthcare professional, not taken by a patient at home on a fixed daily schedule.


Q: What happens if I forget a dose of Remimed?

Due to the strict control measures required, the issue of a patient 'forgetting a dose' is not a scenario encountered in the approved use setting. This medicine is administered solely by trained healthcare professionals as a continuous IV infusion in a monitored clinical setting.


Q: If Remimed is stopped, will the original condition symptoms return?

Yes, the analgesic effect is designed to subside quickly. Upon discontinuation of the infusion, the drug is rapidly broken down by enzymes, resulting in a rapid reduction in systemic concentration and functional effect, meaning the pain-blocking effect quickly fades.


Q: Is Remimed the same type of medicine as [similar drug name]? What's the difference?

Remimed is classified as an ultra short-acting mu-opioid receptor agonist. A key factor that differentiates it is its organ-independent clearance, meaning it is rapidly broken down by common enzymes throughout the body, rather than being cleared primarily by the kidneys or liver.


Q: How is Remimed different from a supplement?

Remimed is a potent, prescription-only pharmaceutical preparation with a defined mechanism of action and regulatory-approved indications. Unlike nutritional supplements, this medicine has undergone extensive government review and approval processes to ensure its quality and purpose in a controlled medical setting.


Q: Does Remimed cause weight gain or weight loss?

Weight changes are not listed among the very common side effects of Remimed. However, some regulatory-related resources note that both weight loss and weight gain have been reported as rare or infrequent side effects in clinical trials or post-marketing surveillance.


Q: Is it common to feel tired when first starting Remimed?

The official safety profile lists CNS effects like Dizziness and Sedation (sleepiness or drowsiness). These are common effects of mu-opioid receptor agonists that may be perceived as tiredness, especially when the medicine is used in combination with other Central Nervous System depressants.


Q: Can Remimed affect my sleep pattern?

Remimed is only approved for short-term use during a medical procedure or in the Intensive Care Unit (ICU). While specific long-term effects on sleep patterns are not a primary focus in the labeling, regulatory bodies have previously assessed risks associated with mu-opioids and central sleep apnea in relation to chronic use.


Q: Does Remimed have a warning about driving or operating machinery?

Yes. As a medicine that affects the Central Nervous System, the official labeling includes warnings that the medicine can cause you to feel dizzy, drowsy, or lightheaded. Patients are advised not to drive or operate heavy machinery for a specified period after administration.


Q: Is it possible to become dependent on Remimed?

The official safety profile notes that post-marketing reports include concerns about Drug Dependence and Tolerance, particularly after prolonged administration of the medicine in settings like the ICU.


Q: Are there any long-term safety studies on Remimed?

Research summaries note that clinical trial follow-up was primarily limited to the immediate post-infusion period, typically within 24 hours. Because of this, official documents state that long-term effects are not fully established by the existing evidence base.


Q: Does Remimed interact with birth control pills?

The regulatory profile emphasizes interactions related to additive effects on the central nervous system. Regulatory documents state Remimed has a lack of significant pharmacokinetic (PK) interactions involving the Cytochrome P450 enzyme system, which commonly metabolizes hormonal contraceptives. The official profile emphasizes Pharmacodynamic (PD) effects.


Q: Is Remimed a controlled substance?

Yes. Due to its classification as a potent mu-opioid receptor agonist and its potential for abuse, the active ingredient in Remimed, Remifentanil, is classified in the United States by the DEA as a Schedule II controlled substance.


Q: What is the average duration of treatment with Remimed?

The duration is highly individualized and depends on the intended use. It can range from the duration of a single anesthetic procedure (a few hours) to continuous administration for analgesia in the ICU for up to a few days, as stated in the clinical use documents.


Q: Will Remimed help with symptoms not listed in the official uses?

The official prescribing information indicates the medicine is only approved as an analgesic for use during the induction and maintenance of general anesthesia and for immediate postoperative analgesia. Official regulatory documents do not support use for other symptoms.


Q: What should I do if a side effect seems mild but bothersome?

Official patient information recommends reporting any side effect to the healthcare professional who is managing the administration of the medicine. The professional is best positioned to evaluate and manage the patient's condition in the monitored setting.


Q: Does Remimed interact with caffeine?

While caffeine is not specifically named in the official drug interaction tables, the regulatory profile includes warnings about potential pharmacodynamic interactions with other drugs that affect the Central Nervous System (CNS), including both depressants and certain stimulants.


Q: What is the risk of a severe allergic reaction to Remimed?

The official safety profile for Remimed classifies severe allergic reactions, such as Anaphylaxis (a serious, rapid allergic reaction), as Rare. This means the reaction is expected to occur in ge 1/10,000 to <1/1,000 patients.


Q: Does Remimed affect blood pressure?

Yes, the official profile lists changes in blood pressure as common effects. Hypotension (low blood pressure) is classified as a Very Common side effect, and Hypertension (high blood pressure) is classified as a Common side effect.


Q: Do I need to change my diet while taking Remimed?

The official drug interaction profile emphasizes interactions with other medicines and CNS depressants like alcohol. Regulatory documents do not mandate significant food or diet-related restrictions during the time the medicine is administered.


Q: Can teenagers or children use Remimed?

The medicine is approved for use as an adjunct to general anesthesia in adults and pediatric patients aged 1-12 years. Use in the teenager population (13–17 years) is included within the scope of the adult population according to regulatory guidelines.


Q: Does taking Remimed for a long time change its effects?

The official safety profile notes that post-marketing reports include concerns about Tolerance and Drug Dependence, particularly after prolonged administration of the medicine in settings like the ICU.


Q: Are there any known issues with taking Remimed right before or after surgery?

Remimed is primarily designed for use during surgery. Known post-operative concerns described in regulatory documents include the frequent occurrence of Postoperative pain and a need for immediate transition to a longer-acting analgesic medicine once the infusion is stopped.


Q: Why is my [relative/friend] taking Remimed for a different reason than me?

Remimed is approved for two main indications in adults. These indications are: as an analgesic during general anesthesia (for surgical procedures) and for providing analgesia in mechanically ventilated critically ill patients in the Intensive Care Unit (ICU).

How should Remimed be stored and disposed of?

The storage and disposal of Remimed (Remifentanil Hydrochloride) must adhere strictly to regulatory requirements to ensure product integrity.

Required Storage Conditions

Product State Temperature Requirement Protection Requirement
Unreconstituted Powder Controlled room temperature (20 C to 25 C) Must be protected from light
Reconstituted Solution Controlled room temperature (20 C to 25 C) Use or discard within 24 hours

Official labeling mandates that the unreconstituted powder must be stored in its original carton and must not be frozen. The single-patient-use product must be visually inspected for discoloration or particulate matter before administration, and if found, it must be discarded. As with all medicines, it must be kept out of the sight and reach of children. Any unused portion of the product or related waste material must be disposed of according to local pharmaceutical waste regulations.

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

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