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Reglan (Metoclopramide Hydrochloride) - Side Effects and Adverse Reactions



In general, the incidence of adverse reactions correlates with the dose and duration of metoclopramide administration. The following reactions have been reported, although in most instances, data do not permit an estimate of frequency:

CNS Effects

Restlessness, drowsiness, fatigue, and lassitude may occur in patients receiving the recommended prescribed dosage of REGLAN Injection. Insomnia, headache, confusion, dizziness, or mental depression with suicidal ideation also may occur (see WARNINGS). In cancer chemotherapy patients being treated with 1-2 mg/kg per dose, incidence of drowsiness is about 70%. There are isolated reports of convulsive seizures without clear-cut relationship to metoclopramide. Rarely, hallucinations have been reported.

Extrapyramidal Reactions (EPS)

Acute dystonic reactions, the most common type of EPS associated with metoclopramide, occur in approximately 0.2% of patients (1 in 500) treated with 30 to 40 mg of metoclopramide per day. In cancer chemotherapy patients receiving 1‑2 mg/kg per dose, the incidence is 2% in patients over the ages of 30‑35, and 25% or higher in pediatric patients and adult patients less than 30 years of age who have not had prophylactic administration of diphenhydramine. Symptoms include involuntary movements of limbs, facial grimacing, torticollis, oculogyric crisis, rhythmic protrusion of tongue, bulbar type of speech, trismus, opisthotonus (tetanus-like reactions), and, rarely, stridor and dyspnea possibly due to laryngospasm; ordinarily these symptoms are readily reversed by diphenhydramine (see WARNINGS).

Parkinsonian-like symptoms may include bradykinesia, tremor, cogwheel rigidity, mask-like facies (see WARNINGS).

Tardive dyskinesia most frequently is characterized by involuntary movements of the tongue, face, mouth, or jaw, and sometimes by involuntary movements of the trunk and/or extremities; movements may be choreoathetotic in appearance (see WARNINGS).

Motor restlessness (akathisia) may consist of feelings of anxiety, agitation, jitteriness, and insomnia, as well as inability to sit still, pacing, foot tapping. These symptoms may disappear spontaneously or respond to a reduction in dosage.

Neuroleptic Malignant Syndrome

Rare occurrences of neuroleptic malignant syndrome (NMS) have been reported. This potentially fatal syndrome is comprised of the symptom complex of hyperthermia, muscular rigidity, altered consciousness, and autonomic instability (see WARNINGS).

Endocrine Disturbances

Galactorrhea, amenorrhea, gynecomastia, impotence secondary to hyperprolactinemia (see PRECAUTIONS). Fluid retention secondary to transient elevation of aldosterone (see CLINICAL PHARMACOLOGY).


Hypotension, hypertension, supraventricular tachycardia, bradycardia, fluid retention, acute congestive heart failure and possible atrioventricular (AV) block (see CONTRAINDICATIONS and PRECAUTIONS).


Nausea and bowel disturbances, primarily diarrhea.


Rarely, cases of hepatotoxicity, characterized by such findings as jaundice and altered liver function tests, when metoclopramide was administered with other drugs with known hepatotoxic potential.


Urinary frequency and incontinence.


A few cases of neutropenia, leukopenia, or agranulocytosis, generally without clear-cut relationship to metoclopramide. Methemoglobinemia in adults and especially with overdosage in neonates (see OVERDOSAGE). Sulfhemoglobinemia in adults.

Allergic Reactions

A few cases of rash, urticaria, or bronchospasm, especially in patients with a history of asthma. Rarely, angioneurotic edema, including glossal or laryngeal edema.


Visual disturbances. Porphyria.

Transient flushing of the face and upper body, without alterations in vital signs, following high doses intravenously.


Below is a sample of reports where side effects / adverse reactions may be related to Reglan. The information is not vetted and should not be considered as verified clinical evidence.

Possible Reglan side effects / adverse reactions in 74 year old male

Reported by a lawyer from United States on 2011-10-13

Patient: 74 year old male weighing 86.0 kg (189.2 pounds)

Reactions: Abdominal Pain, Rectal Polyp, Dyskinesia, Tachycardia, Clostridium Difficile Colitis, Change of Bowel Habit, Haematemesis, Dizziness, Pleural Effusion, Nausea, Anaemia, Neutropenic Sepsis, Malnutrition, Tremor, Anxiety, Small Intestinal Obstruction, Diarrhoea, Dehydration, Metastases TO Pleura, Hypertension, Asthenia

Suspect drug(s):
    Indication: Product Used FOR Unknown Indication
    Start date: 1992-10-06
    End date: 1992-10-10

    Start date: 2009-08-06
    End date: 2009-08-07

    Start date: 2007-05-14
    End date: 2007-05-21

Possible Reglan side effects / adverse reactions in 19 year old male

Reported by a lawyer from United States on 2011-10-18

Patient: 19 year old male

Reactions: Mental Impairment, Akathisia, Agitation, Completed Suicide, Extrapyramidal Disorder, Depression, GUN Shot Wound, Hallucination, Suicidal Ideation

Adverse event resulted in: death, hospitalization

Suspect drug(s):
    Dosage: (df oral)
    Administration route: Oral
    Indication: Gastric Ulcer
    Start date: 2008-06-12
    End date: 2008-06-21

    Dosage: (df oral)
    Administration route: Oral
    Indication: Gastritis
    Start date: 2008-06-12
    End date: 2008-06-21

Possible Reglan side effects / adverse reactions in 51 year old female

Reported by a health professional (non-physician/pharmacist) from United States on 2011-10-24

Patient: 51 year old female

Reactions: Confusional State, Hyperhidrosis, Walking AID User, Feeling Cold, Myalgia, Skin Lesion, Feeling Hot, Depression, Migraine, Vomiting, Nausea, Urinary Tract Infection, Paraesthesia, Arthralgia, Diarrhoea, Suicide Attempt, Gait Disturbance, Asthenia, Anaesthesia

Adverse event resulted in: hospitalization

Suspect drug(s):
    Start date: 2011-06-01
    End date: 2011-06-01

    Indication: Nausea

    Indication: Crohn's Disease
    Start date: 2011-06-01

    Start date: 2011-06-01
    End date: 2011-06-01

Other drugs received by patient: Calcium Carbonate; VIT D; Multi-Vitamin; Prozac; Xanax; Prednisone; Omeprazole; Furosemide; Cymbalta; Ondansetron; Pentasa; Hydrocodone Bitartrate; Metoprolol Tartrate; Aspirin; Fish OIL; Nabumetone

See index of all Reglan side effect reports >>

Drug label data at the top of this Page last updated: 2010-11-18

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