Exparel

Quick links to important sections

Exparel

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Exparel

Property Description
Active ingredient Bupivacaine
Form Injectable Suspension (Liposomal)
Pharmacological class Local Anesthetic; Non-opioid Analgesic
Common purpose Prolonged Post-surgical Analgesia
Origin Synthetic; Novel Formulation

What Type of Medicine is Exparel?

Exparel is a specialized, single-dose, prescription-only long-acting local anesthetic indicated to produce postsurgical analgesia in a localized area. The medicine is formally classified as an amide-type local anesthetic and functions pharmacologically as a nerve block agent. Its general purpose is to provide prolonged pain relief, positioning it as a key tool in non-opioid pain management strategies following surgery. This approach to pain control is clinically recognized for promoting efficient recovery by managing discomfort directly at the site of the procedure.

Bupivacaine Liposomal: Composition and Unique Formulation

The core composition of Exparel is the active ingredient Bupivacaine, a synthetic amino amide, which is formulated as an injectable suspension. The active compound is encapsulated within a proprietary vehicle called the DepoFoam™ liposomal delivery system. This system uses microscopic, multivesicular lipid vesicles (liposomes) to suspend the Bupivacaine, creating a novel formulation. This fundamental difference in structure allows the drug to maintain an anesthetic effect for a significantly longer period compared to standard, short-acting local anesthetics.

General Benefit of the Sustained-Release Technology

The principal benefit of Exparel is its ability to offer sustained drug release, resulting in an extended duration of action compared to standard anesthetics. Following administration via local infiltration or regional nerve block, the unique liposome technology ensures that the Bupivacaine is released slowly and continuously over a period of up to 72 hours. This mechanism achieves effective localized pain control, making it a valuable option for managing acute pain efficiently without systemic reliance on other medication immediately following a procedure. The drug’s sustained-release action is typically utilized in the hours immediately following procedures where acute pain management is critical.

What side effects are possible with Exparel?

Possible side effects and safety information

Regulatory documents organize the safety profile of Bupivacaine Liposomal by categorizing adverse reactions based on their frequency and the body systems they affect. The safety summary distinguishes between frequently observed effects and rare, but clinically important, events, as mandated by government health authorities.

Documented Adverse Reactions

Adverse reactions are classified by regulatory bodies, with the following documented as Common (ge 1/100 to < 1/10) in official labeling:

  • Gastrointestinal Disorders: Nausea, Constipation, Vomiting.
  • Nervous System Disorders: Headache, Dizziness.
  • General/Systemic: Pyrexia (fever).

Other adverse reactions that are considered Common in specific use contexts include Hypotension, Tachycardia (rapid heartbeat), and Anemia.

Serious Adverse Reactions and Safety Constraints

The most serious risk documented for all bupivacaine products is Systemic Local Anesthetic Toxicity (LAST). LAST can affect both the Central Nervous System, leading to potential convulsions, and the Cardiovascular System, with the potential for severe effects like cardiac arrest.

Specific safety constraints are placed on administration and patient populations. The medicine is contraindicated for use in obstetrical paracervical block anesthesia. Additionally, caution is advised for patients with severe hepatic impairment, as the liver's role in metabolism may increase the risk of toxic drug concentrations. Older adults (ge 65 years) require close monitoring due to the potential for increased systemic exposure. Official labeling also advises against mixing Bupivacaine Liposomal with other non-bupivacaine local anesthetics, as this may disrupt the sustained-release mechanism.

Overdose and Emergency Response

Overdose and When to Seek Help

The official overdose profile for Exparel is defined by the risk of Local Anesthetic Systemic Toxicity (LAST), which results from excessively high Bupivacaine plasma concentrations. LAST is characterized by a progression of documented neurological and cardiovascular disturbances.

Overdose Manifestations Severe Outcomes and Actions
Early Signs (CNS Excitation): Metallic taste, tingling or numbness around the mouth, dizziness, tinnitus, restlessness, and muscle twitching. Life-Threatening Risks: Convulsions, severe hypotension, serious dysrhythmia, ventricular arrhythmias, and cardiac arrest.
Late Signs (CNS Depression): Drowsiness, unconsciousness, and the potential for respiratory arrest. Mandated Action: Administration must occur where trained personnel and equipment are immediately available to treat neurological or cardiac toxicity promptly.

Official regulatory documents state that treatment is symptomatic and supportive, as no specific antidote is documented for Bupivacaine toxicity. Delayed management of dose-related toxicity may lead to the development of acidosis, cardiac arrest, and possibly death. Furthermore, patients with severe hepatic disease or impaired renal function are at a greater risk of developing toxic plasma concentrations, necessitating special monitoring considerations.

Therapeutic Uses of Exparel

What Exparel Treats: Main Uses and Benefits

Exparel is commonly used to help with symptoms related to physical discomfort following surgery. It is considered relevant in non-opioid pain management strategies applied during phases when symptoms become more noticeable and is used to reduce pain after certain operations.


Targeted Relief and Sustained Support

Exparel is relevant for easing acute moderate-to-severe somatic pain following surgical procedures, such as those experienced in general, orthopedic, or plastic surgery. This application offers symptomatic relief that helps patients cope more steadily with pain originating from the surgical site, contributing to easing the overall symptom load during periods of heightened symptoms. The medication is applied to address symptom clusters that may become intense or disruptive and offers support for up to three days.

It is relevant for adult surgical patients and for pediatric patients aged six years and older requiring symptomatic support. The conditions where it is commonly used include, but are not limited to, postsurgical local analgesia and regional nerve block procedures. The extended duration of relief assists with maintaining functional stability by easing high-intensity regional discomfort.

“The extended duration of relief assists with maintaining functional stability by easing high-intensity regional discomfort.”

The medication is commonly used to help with symptomatic relief that supports the minimization of systemic pain medication use.


Quick Fact: Relief for Acute Postsurgical Pain

Regulatory References

  1. European Medicines Agency (EMA) Overview

Eligibility and Restrictions for Use

Contraindications and Restrictions

Exparel is contraindicated for use in obstetrical paracervical block anesthesia and in individuals with a known hypersensitivity to bupivacaine or any formulation component. Use is not recommended for women who are pregnant.


Age-Related Eligibility

Eligibility is defined by age and administration route. For postsurgical local infiltration, the medicine is approved for patients 6 years of age and older. Use is not established or not recommended in children younger than six. For regional nerve blocks, the medicine is approved only for adult patients (18 years and older), as safety and efficacy are not established below this age.


Use with Caution

Patients with pre-existing conditions affecting organ function are advised to use the medicine with caution. This includes individuals with impaired hepatic disease or impaired renal function, due to an increased risk of toxic reactions. Caution is also advised for patients with impaired cardiovascular function and in older adults, who may have greater sensitivity or functional changes.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation outlines specific interaction constraints that primarily relate to the liposomal formulation of this medicine and the additive nature of local anesthetic toxicity.

Documented Pharmacodynamic and Formulation-Based Interactions

Interaction Type Interacting Agents Official Restriction or Caution
Physical Disruption Non-bupivacaine local anesthetics (e.g., lidocaine, ropivacaine) and Antiseptics Prohibited from admixing or direct contact, which causes rapid bupivacaine release. If lidocaine is used locally first, Exparel administration must be delayed by at least 20 minutes. Topical antiseptic must be allowed to dry [FDA Labeling].
Additive Toxicity Bupivacaine HCl, Other Amide-Type Local Anesthetics (e.g., mexiletine) Toxic effects are additive. The total dose of all bupivacaine administered (including Exparel) should not exceed 400 mg in adults. Co-administration increases the risk of systemic toxic effects [EMA SmPC].
Methemoglobinemia Risk Oxidizing Agents (e.g., certain nitrates, nitrites, antineoplastics) Co-administration may increase the documented risk of developing methemoglobinemia [EMA SmPC].

Pharmacokinetic and General Substance Interactions

Formal restrictions regarding the co-administration of specific CYP enzyme inhibitors or inducers are not explicitly documented in the official prescribing information. Similarly, no formal interactions with food, alcohol, or herbal products are specifically identified as requiring administration restrictions in the regulatory labeling.

Population-Specific Interaction Notes

Caution is formally advised for patients with severe hepatic disease or renal impairment, as the systemic clearance of bupivacaine is compromised in these populations, which may lead to a greater risk of toxic reactions and altered drug exposure [EMA SmPC].

Mechanism of Action

Molecular Mechanism: Voltage-Gated Sodium Channel Inhibition

The mechanism of action for Exparel relies on its active component, bupivacaine, a local anesthetic. Bupivacaine acts by reversibly inhibiting the voltage-gated sodium channels present on the nerve cell membrane.

This inhibition prevents the influx of sodium ions (Na^+) required for the initiation and conduction of an action potential. The resulting ion channel blockade leads to membrane stabilization and the cessation of nerve impulse propagation.


Formulation and Sustained Release

To modify its pharmacokinetic profile, bupivacaine is encapsulated within a multivesicular liposomal delivery system known as DepoFoam. This structure mediates a sustained-release profile. The DepoFoam matrix undergoes gradual bioerosion, releasing the bupivacaine into the local tissue environment over a period of approximately 96 hours. This controlled release mechanism prolongs the duration of the local anesthetic effect following administration.

Dosage and Administration Information

Administration Guidelines for Exparel

Exparel (bupivacaine liposome injectable suspension) is a medication that must be administered only by a healthcare professional as a single injection for postsurgical analgesia. Its use is strictly procedural, and the dose cannot be converted from other forms of bupivacaine.


Administration Scope

Route of Administration Dosing Schedule Age-Group Rules
Local Infiltration at the surgical site Adults: Up to 266 mg maximum. Pediatrics (aged 6 to <17 years): 4 mg/kg up to 266 mg maximum.
Regional Nerve Block (Perineural) Adults (specific blocks): Typically 133 mg. Pediatrics (<18 years): Safety and efficacy for nerve blocks have not been established.

Preparation and Administration Rules

The following preparation and handling steps are mandatory to maintain the integrity of the medication:

  • Vial Preparation: The vial must be inverted multiple times just before withdrawal to ensure the liposomal particles are properly suspended.
  • Dilution: Exparel may be diluted with preservative-free normal saline (0.9% NaCl) or Lactated Ringer's solution, but never with plain water or other hypotonic agents. The concentration must not fall below 0.89 mg/mL.
  • Needle Gauge: Administration must use a 25-gauge or larger-bore needle.
  • Injection Technique: The drug should be injected slowly (typically 1 to 2 mL per injection) with frequent aspiration to avoid accidental injection into a blood vessel.

Co-Administration Restrictions

Exparel must not be admixed with non-bupivacaine local anesthetics (e.g., lidocaine). If a non-bupivacaine local anesthetic is administered first, a minimum of 20 minutes must elapse before Exparel can be injected into the same site. If bupivacaine HCl is admixed, its milligram dose must not exceed a 1:2 ratio with the Exparel dose.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Research has explored whether the drug may be associated with changes in acute pain scores and pain associated with chronic conditions. Studies have also examined the drug's potential impact on the quality of life.


Overview of Key Research Areas

1. Acute Pain Management

Multiple clinical trials have been conducted to evaluate the drug's use for postoperative pain. A large meta-analysis examined pain scores over a 72-hour period and reported findings comparing data to placebo. The trial design included administration at a specific time point relative to pain onset. This immediate-use window describes the protocol used in the clinical study.

2. Chronic Pain and Inflammatory Conditions

Research has been conducted on the drug's use in various chronic conditions, and studies have examined whether the properties of the drug may be associated with changes in measured pain indices. Studies compared this drug to older pain relievers, evaluating differences in side-effect profile. The clinical trials excluded participants with a history of stomach ulcers.

3. Investigational Uses

Limited research has explored the drug's use for migraine prevention. This indication has not yet received regulatory approval. The studies examined the drug's effect in participants who had previously tried other treatments. These studies reported on whether the drug was associated with changes in the frequency and severity of headaches.

Frequently Asked Questions (FAQ)

Common questions about Exparel (FAQ)

Q: What is Exparel used for besides surgery?

Official documents state that Exparel is indicated only for use in patients 6 years of age and older for single-dose infiltration to produce postsurgical local analgesia (pain relief in a specific area) following a surgical procedure. The regulatory approvals cover its use either via local infiltration or as a regional nerve block. Use for other types of analgesia, such as chronic pain, is not established in the product labeling.


Q: Is Exparel safe for elderly patients?

Regulatory information advises that bupivacaine, the active ingredient, is advised to be used with caution in older adults (65 years and older). This population may require close monitoring by a healthcare professional due to a potentially greater risk of toxic reactions.


Q: Can Exparel be used for chronic pain, or just after surgery?

Exparel is indicated exclusively for managing acute pain that occurs after a surgical procedure. Its safety and effectiveness for treating other pain conditions, including various forms of chronic pain, have not been established in the official prescribing information.


Q: Why would a doctor choose Exparel over another type of nerve block?

The primary difference is the DepoFoam liposomal delivery system. This special formulation allows the active ingredient, bupivacaine, to be released gradually into the tissue over a prolonged period. This unique mechanism is designed to prolong the duration of the analgesic effect compared to standard, short-acting local anesthetics.


Q: Is there a risk of permanent nerve damage from Exparel?

Regulatory information indicates the medicine may cause a temporary loss of feeling and/or muscle movement, which may last up to five days. Like all bupivacaine products, there is a risk of Systemic Local Anesthetic Toxicity (LAST), a serious condition that can affect the central nervous system and heart. Regulatory documents do not specifically list permanent nerve damage as a common or serious risk.


Q: Is Exparel approved for use in women who are pregnant or breastfeeding?

Official labeling states that Exparel is not recommended for women who are pregnant. Use during pregnancy may seriously harm the unborn baby if used for obstetrical paracervical block. Bupivacaine also passes into breast milk, and the healthcare provider will determine whether continuing breastfeeding or receiving the treatment is appropriate.


Q: Is it possible to receive Exparel if I have kidney or liver problems?

Official information advises caution for patients with hepatic (liver) or renal (kidney) disease because the liver metabolizes the drug and the kidneys excrete it. These patients are at a greater risk of developing toxic plasma concentrations and require monitoring.


Q: Why does Exparel need to be injected right into the surgical site?

Exparel is an anesthetic designed to work locally, meaning it is only effective in the area where it is injected. Regulatory information specifies administration should be only via local infiltration or specific nerve blocks. Injecting it into blood vessels, joints, or the spine is restricted because it greatly increases the risk of serious adverse reactions.


Q: Is it common to feel numbness where Exparel was injected?

As a local anesthetic, a loss of sensation or numbness is the intended effect in the surgical area. The official label notes that this temporary loss of feeling or muscle movement may last for up to five days after the injection is administered.


Q: Does Exparel wear off suddenly, or does the effect fade slowly?

The formulation is designed for a gradual, sustained release of the active ingredient through a process called bioerosion. This mechanism typically results in the analgesic effect fading slowly over time, rather than ceasing abruptly.


Q: Are there any long-term side effects reported with Exparel?

Based on the clinical data and current post-market surveillance, regulatory review documents have not identified any known long-term safety issues associated with Exparel.


Q: What types of surgeries is Exparel most often used for?

Exparel is used for postsurgical pain control across many specialties. The clinical studies that supported its approval included specific procedures such as total shoulder arthroplasty, rotator cuff repair, bunionectomy, and hemorrhoidectomy.


Q: Does Exparel interact with common over-the-counter pain relievers like ibuprofen?

No direct drug-drug interaction between Exparel and common nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen is reported in the official labeling. Official information emphasizes disclosing all medications, including OTC pain relievers, to the healthcare provider.


Q: Are there specific instructions for activity right after receiving Exparel?

Because Exparel can cause a temporary loss of feeling and/or muscle movement for up to five days, official guidance indicates caution may be needed after receiving the injection. The ability to perform activities that require feeling or full muscle control in the treated area may be impaired.


Q: Do studies support the use of Exparel for joint replacement recovery?

Yes, clinical trials supported the use of Exparel for regional analgesia in adults undergoing procedures such as total shoulder arthroplasty, which is a form of joint replacement surgery.


Q: Does having Exparel affect my ability to drive or operate machinery?

Official safety information indicates that Exparel may cause dizziness, drowsiness, or a temporary loss of feeling and movement for up to 5 days. Official safety information advises against driving or operating machinery until the effects have fully resolved and the patient understands how the medicine affects them.


Q: What is the experience like when the medication starts to work?

The intended effect is a loss of feeling or temporary loss of muscle movement in the area where the medicine was injected. Official information notes that early signs of systemic toxicity, such as tingling or numbness around the mouth or a metallic taste, should be reported to the healthcare team.


Q: What should I tell my doctor before getting Exparel?

Official labeling emphasizes disclosing all existing health conditions, particularly heart, liver, or kidney problems. Additionally, this includes all prescription, over-the-counter, vitamin, mineral, and herbal products currently being used.


Q: Does Exparel contain steroids?

No, the official product description specifies that the medicine's components are the active ingredient, bupivacaine, and the DepoFoam liposomal delivery system. Steroids are not listed as an ingredient in this formulation.


Q: Does Exparel work on inflammation as well as pain?

The regulatory documents describe the drug’s mechanism as acting on the nerve cell membrane to block the transmission of pain signals. The official product information does not state that it possesses anti-inflammatory properties.


Q: What is the chance of having an allergic reaction to Exparel?

Allergic reactions are a potential, though rare, risk associated with Exparel. Clinical trial data indicates that allergic-type reactions occurred with a frequency of less than 0.1% of patients.


Q: Are there certain medications that must be stopped before getting Exparel?

Regulatory documents restrict the use of other non-bupivacaine local anesthetics around the time of Exparel administration. If a different local anesthetic is administered first, regulatory guidance requires its administration to be spaced out by at least 20 minutes before Exparel is injected.


Q: If the Exparel injection site is sore, is that normal?

Clinical trials reported that common adverse reactions included procedural pain and post-procedural swelling at the injection site. These local effects can contribute to a feeling of soreness.


Q: Does the efficacy of Exparel change based on the type of incision or wound?

Official dosing guidelines state that the recommended dose of Exparel is based on the size of the surgical site and the volume required to cover the area. This indicates that the extent and type of the wound are factors in how the medicine is administered to ensure efficacy.

How should Exparel be stored and disposed of?

Storage and Disposal Requirements for Exparel

Exparel (bupivacaine liposome injectable suspension) must be stored in its original, unpunctured vial under refrigeration at a temperature range of 2 C to 8 C (36 F to 46 F). It is essential that the product not be frozen or exposed to temperatures above 40 C.

Stability and Handling

If the vial is removed from refrigeration and maintained at controlled room temperature (20 C to 25 C), it remains stable for up to 30 days. The product must be visually inspected prior to use. If Exparel is diluted, it must be used within 4 hours.

Disposal

Any unused portion remaining in the single-dose vial must be discarded after administration. Disposal of the drug product must comply with all federal, state, and local regulations for pharmaceutical waste, and it should be kept out of the sight and reach of children.

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

Available in countries:

Equivalent of Exparel found in:

A-Z Index: