From Feeling Nauseous
to Feeling Normal

The only antiemetic approved for
breakthrough PONV rescue

Not an actual patient.

Barhemsys is the first and only antiemetic approved for rescue treatment of PONV after failed prophylaxis with an agent of a different class

Barhemsys is a selective D2 and D3 receptor antagonist1

  • D2 receptors are in the CTZ and respond to the dopamine released from nerve endings; activation of the CTZ relays stimuli to the vomiting center, which is involved in emesis
  • Studies in multiple species indicate that D3 receptors in the area postrema also play a role in emesis
  • In vitro studies have shown that amisulpride has no appreciable affinity for any other receptor types apart from low affinities for 5-HT2B and 5-HT7 receptors

Barhemsys is nonsedating1,2

Based on a post-hoc analysis of safety data from the clinical development program, 922 subjects could be evaluated for treatment-related sedation and none of them experienced sedation or sedation-like events.

Barhemsys enables guideline-driven care

The 2025 guideline
recommendations3

When PONV prophylaxis fails, use an antiemetic treatment from a different pharmacological class than the prophylactic drug administered.

Consider the sedating side effects of antiemetics that may prolong discharge.

—Fifth Consensus Guidelines for the Management of
Postoperative Nausea and Vomiting from the Society for
Ambulatory Anesthesia (SAMBA) and American Society of
Enhanced Recovery (ASER)

Most commonly used classes of antiemetic agents3

5-HT3 antagonists

Anticholinergics

Antihistamines

Corticosteroids

Dopamine antagonists

NK-1 antagonists

Barhemsys, as a selective D2/D3 receptor antagonist, offers a nonsedating treatment option from a different pharmacological class than commonly used prophylaxis agents, enabling guideline-driven care.1-4

Guideline-driven Care

Learn more from your peers about ERAS protocols, management guidelines, and clinical considerations for treating PONV in the PACU.

Watch Video

Barhemsys Fast Facts

Keep key information about Barhemsys on hand to assist in your decision-making.

Download Resource

Indications

Barhemsys is a selective dopamine-2 (D2) and dopamine-3 (D3) receptor antagonist indicated in adults for:

  • prevention of postoperative nausea and vomiting (PONV), either alone or in combination with an antiemetic of a different class
  • treatment of PONV in patients who have received antiemetic prophylaxis with an agent of a different class or have not received prophylaxis

Important Safety Information

Contraindication

Barhemsys is contraindicated in patients with known hypersensitivity to amisulpride.

QT Prolongation

Barhemsys causes dose- and concentration-dependent prolongation of the QT interval. The recommended dosage is 5 mg or 10 mg as a single intravenous (IV) dose infused over 1 to 2 minutes.

Avoid Barhemsys in patients with congenital long QT syndrome and in patients taking droperidol.

Electrocardiogram (ECG) monitoring is recommended in patients with pre-existing arrhythmias/cardiac conduction disorders, electrolyte abnormalities (e.g., hypokalemia or hypomagnesemia), congestive heart failure, and in patients taking other medicinal products (e.g., ondansetron) or with other medical conditions known to prolong the QT interval.

Adverse Reactions

Common adverse reactions reported in ≥ 2% of adult patients who received Barhemsys 5 mg (N=748) and at a higher rate than placebo (N=741) in clinical trials for the prevention of PONV were: chills (4% vs. 3%), hypokalemia (4% vs. 2%), procedural hypotension (3% vs. 2%), and abdominal distention (2% vs. 1%).

Serum prolactin concentrations were measured in one prophylaxis study where 5% (9/176) of Barhemsys-treated patients had increased blood prolactin reported as an adverse reaction compared with 1% (1/166) of placebo-treated patients.

The most common adverse reaction, reported in ≥ 2% of adult patients who received Barhemsys 10 mg (N=418) and at a higher rate than placebo (N=416), in clinical trials for the treatment of PONV was infusion site pain (6% vs. 4%).

Use in Specific Populations

Pregnancy
Available data with amisulpride use in pregnant women are insufficient to establish a drug associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.

Lactation
Amisulpride is present in human milk. There are no reports of adverse effects on the breastfed child and no information on the effects of amisulpride on milk production.

Barhemsys may result in an increase in serum prolactin levels, which may lead to a reversible increase in maternal milk production. In a clinical trial, serum prolactin concentrations in females (n=112) increased from a mean of 10 ng/mL at baseline to 32 ng/mL after Barhemsys treatment and from 10 ng/mL to 19 ng/mL in males (n=61). No clinical consequences due to elevated prolactin levels were reported.

To minimize exposure to a breastfed infant, lactating women may consider interrupting breastfeeding and pumping and discarding breast milk for 48 hours after receiving a dose of Barhemsys.

Pediatric Use
Safety and effectiveness in pediatric patients have not been established.

Geriatric Use
No overall differences in safety or effectiveness were observed between these patients and younger patients, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

Drug Interactions

  • Barhemsys causes dose- and concentration-dependent QT prolongation. To avoid potential additive effects, avoid use of Barhemsys in patients taking droperidol.
  • ECG monitoring is recommended in patients taking other drugs known to prolong the QT interval (e.g., ondansetron).
  • Reciprocal antagonism of effects occurs between dopamine agonists (e.g., levodopa) and Barhemsys. Avoid using levodopa with Barhemsys.

To report SUSPECTED ADVERSE REACTIONS, contact LXO US at 1-844-399-5701 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Please click to access full Prescribing Information.

BAR HCP ISI 09/2022

Indications

Barhemsys is a selective dopamine-2 (D2) and dopamine-3 (D3) receptor antagonist indicated in adults for:

  • prevention of postoperative nausea and vomiting (PONV), either alone or in combination with an antiemetic of a different class
  • treatment of PONV in patients who have received antiemetic prophylaxis with an agent of a different class or have not received prophylaxis

Important Safety Information

Contraindication

Barhemsys is contraindicated in patients with known hypersensitivity to amisulpride.

QT Prolongation

Barhemsys causes dose- and concentration-dependent prolongation of the QT interval. The recommended dosage is 5 mg or 10 mg as a single intravenous (IV) dose infused over 1 to 2 minutes.
Avoid Barhemsys in patients with congenital long QT syndrome and in patients taking droperidol.
Electrocardiogram (ECG) monitoring is recommended in patients with pre-existing arrhythmias/cardiac conduction disorders, electrolyte abnormalities (e.g., hypokalemia or hypomagnesemia), congestive heart failure, and in patients taking other medicinal products (e.g., ondansetron) or with other medical conditions known to prolong the QT interval.

Adverse Reactions

Common adverse reactions reported in ≥ 2% of adult patients who received Barhemsys 5 mg (N=748) and at a higher rate than placebo (N=741) in clinical trials for the prevention of PONV were: chills (4% vs. 3%), hypokalemia (4% vs. 2%), procedural hypotension (3% vs. 2%), and abdominal distention (2% vs. 1%).

Serum prolactin concentrations were measured in one prophylaxis study where 5% (9/176) of Barhemsys-treated patients had increased blood prolactin reported as an adverse reaction compared with 1% (1/166) of placebo-treated patients.

The most common adverse reaction, reported in ≥ 2% of adult patients who received Barhemsys 10 mg (N=418) and at a higher rate than placebo (N=416), in clinical trials for the treatment of PONV was infusion site pain (6% vs. 4%).

Use in Specific Populations

Pregnancy
Available data with amisulpride use in pregnant women are insufficient to establish a drug associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes.

Lactation
Amisulpride is present in human milk. There are no reports of adverse effects on the breastfed child and no information on the effects of amisulpride on milk production.

Barhemsys may result in an increase in serum prolactin levels, which may lead to a reversible increase in maternal milk production. In a clinical trial, serum prolactin concentrations in females (n=112) increased from a mean of 10 ng/mL at baseline to 32 ng/mL after Barhemsys treatment and from 10 ng/mL to 19 ng/mL in males (n=61). No clinical consequences due to elevated prolactin levels were reported.

To minimize exposure to a breastfed infant, lactating women may consider interrupting breastfeeding and pumping and discarding breast milk for 48 hours after receiving a dose of Barhemsys.

Pediatric Use
Safety and effectiveness in pediatric patients have not been established.

Geriatric Use
No overall differences in safety or effectiveness were observed between these patients and younger patients, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

Drug Interactions
  • Barhemsys causes dose- and concentration-dependent QT prolongation. To avoid potential additive effects, avoid use of Barhemsys in patients taking droperidol.
  • ECG monitoring is recommended in patients taking other drugs known to prolong the QT interval (e.g., ondansetron).
  • Reciprocal antagonism of effects occurs between dopamine agonists (e.g., levodopa) and Barhemsys. Avoid using levodopa with Barhemsys.

To report SUSPECTED ADVERSE REACTIONS, contact LXO US at 1-844-399-5701 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Please click to access full Prescribing Information.

BAR HCP ISI 09/2022

5-HT3=serotonin. CTZ=chemoreceptor trigger zone. D2/D3=dopamine 2/dopamine 3. ERAS=enhanced recovery after surgery. NK=neurokinin. PACU=postanesthesia care unit. PONV=postoperative nausea and vomiting.

References: 1. Barhemsys [Package Insert], Lansdale, PA: LXO US, INC; 2026. 2. LXO US. Data on File. 3. Gan TJ, Jin Z, Ayad S, et al. Fifth Consensus Guidelines for the Management of Postoperative Nausea and Vomiting: Executive Summary. Anesth Analg. 2025. Epub ahead of print. doi: 1001213/AMNE.0000000000007816.4. Habib AS, Kranke P, Bergese SD, et al. Amisulpride for the rescue treatment of postoperative nausea or vomiting in patients failing prophylaxis: a randomized, placebo-controlled phase III trial. Anesthesiology. 2019;130(2):203-212.