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trademark for a preparation of bromocriptine mesylate, a dopamine agonist used to suppress prolactin secretion and to treat parkinsonism and acromegaly.

bromocriptine mesylate

Apo-Bromocriptine (CA), Cycloset, Dom-Bromocriptine (CA),Parlodel, PMS-Bromocriptine (CA)

Pharmacologic class: Ergot-derivative dopamine agonist

Therapeutic class: Antiparkinsonian

Pregnancy risk category B


Directly stimulates dopamine receptors in hypothalamus, causing release of prolactin-inhibitory factors and thereby relieving akinesia, rigidity, and tremors associated with Parkinson's disease. Also restores testicular or ovarian function and suppresses lactation. Cycloset's action in glycemic control is unknown.


Capsules: 5 mg

Tablets: 0.8 mg, 2.5 mg

Indications and dosages

Parkinson's disease

Adults: Initially, 1.25 mg P.O. b.i.d. Increase by 2.5 mg/day q 14 to 28 days depending on therapeutic response. Usual therapeutic dosage is 10 to 40 mg/day.


Adults: Initially, 1.25 to 2.5 mg/day P.O. for 3 days. Increase up to 1.25 to 2.5 mg/day q 3 to 7 days. Usual therapeutic dosage is 20 to 30 mg/day; not to exceed 100 mg/day.


Adults: Initially, 1.25 to 2.5 mg/day P.O. Increase gradually q 3 to 7 days up to 2.5 mg two to three times daily.

Neuroleptic malignant syndrome

Adults: Initially, 5 mg P.O. once daily. Increase up to 20 mg/day.

Pituitary tumors

Adults: Initially, 1.25 mg P.O. b.i.d. to t.i.d. Adjust dosage gradually over several weeks to a maintenance dosage of 10 to 20 mg/day given in divided doses.

Type 2 diabetes mellitus

Adults: Initially, 0.8 mg P.O. daily within 2 hours of awakening; may increase by one tablet (0.8 mg) weekly until target range (1.6 to 4.8 mg) or maximal tolerance is reached.


• Hypersensitivity to drug, its components, or other ergot-related drugs
• Severe peripheral vascular disease
• Uncontrolled hypertension, syncopal migraines
• Breastfeeding


Use cautiously in:
• impaired hepatic or cardiac function, renal disease, hypertension, pituitary tumor
• psychiatric disorders
• galactose intolerance, severe lactose deficiency, glucose-galactose malabsorption (use not recommended)
• Concomitant use with anti-hypertensives
• Concomitant use with dopamine antagonists such as neuroleptic agents (use not recommended)
• pregnant patients
• children younger than age 15.


• Give with meals or milk.
• If desired, give at bedtime to minimize dizziness and nausea.
• For Cycloset, administer within 2 hours of patient's waking in the morning and with food.

Adverse reactions

CNS: asthenia, confusion, headache, dizziness, fatigue, delusions, nervousness, mania, insomnia, nightmares, seizures, cerebrovascular accident

CV: hypotension, palpitations, extrasystoles, syncope, arrhythmias, bradycardia, acute myocardial infarction

EENT: blurred vision, diplopia, burning sensation in eyes, amblyopia, rhinitis, sinusitis, nasal congestion

GI: dyspepsia, nausea, vomiting, diarrhea, constipation, abdominal cramps, anorexia, dry mouth, GI hemorrhage

GU: urinary incontinence, polyuria, urinary retention

Musculoskeletal: leg cramps

Skin: urticaria, coolness and pallor of fingers and toes, rash on face and arms, alopecia

Other: metallic taste, digital vasospasm (in acromegaly use only), infection


Drug-drug.Amitriptyline, estrogens, haloperidol, hormonal contraceptives, imipramine, loxapine, MAO inhibitors, phenothiazines, progestins, reserpine: interference with bromocriptine effects

Cyclosporine: inhibition of cyclosporine metabolism, leading to cyclosporine toxicity

Dopamine receptor antagonists (such as neuroleptics [including phenothiazines, butyrophenones, thioxanthenes]), metoclopramide: diminished effectiveness of Cycloset and these drugs

Ergot-related drugs: increased ergotrelated adverse reactions, such as nausea, vomiting, and fatigue; decreased effectiveness of these drugs

Erythromycin: increased bromocriptine blood level and greater risk of adverse effects

Levodopa: additive effects of bromocriptine

Potent CYP3A4 inhibitors or inducers, substrates of CYP3A4 (such as azole antimycotics, HIV protease inhibitors): increased or decreased Cycloset circulating levels

Risperidone: increased prolactin blood level, interference with bromocriptine effects

Drug-diagnostic tests.Alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, blood urea nitrogen, creatine kinase, growth hormone, uric acid: increased levels

Drug-herbs.Chaste tree fruit: decreased bromocriptine effects

Drug-behaviors.Alcohol use: disulfiram-like reaction

Patient monitoring

• Monitor blood pressure to detect hypotension.
• When giving drug for hyperprolactinemia, monitor serum prolactin.
• When giving drug for acromegaly, monitor growth hormone levels to help guide dosage adjustment.
• When giving drug for diabetes mellitus, monitor blood glucose and hemoglobin A1C levels.
• In long-term use, monitor respiratory, hepatic, cardiovascular, and renal function.

Patient teaching

• Instruct patient to take Cycloset within 2 hours of waking in the morning and with food.

Caution patient not to drink alcohol because of risk of severe reaction.
• Advise patient to have regular dental exams. Drug causes dry mouth, possibly resulting in caries and periodontal disorders.
• To minimize constipation, instruct patient to exercise regularly, increase dietary fiber intake, and drink plenty of fluids (3,000 ml daily).
• Advise patient who doesn't desire pregnancy to use reliable contraceptive, because drug may restore fertility.
• Caution patient to avoid driving and other hazardous activities until he knows how drug affects concentration and alertness.
• As appropriate, review all other significant and life-threatening adverse reactions and interactions, especially those related to the drugs, tests, herbs, and behaviors mentioned above.


A trademark for the drug bromocriptine mesylate.


a trademark for a dopamine receptor agonist (bromocriptine).


An ergoline derivative which reduces pituitary prolactin secretion and size of pituitary tumours.
Hyperprolactinemia, pituitary tumours, amenorrhoea, female infertility, hypogonadism, acromegaly, Parkinson’s disease, neuroleptic malignant syndrome, type-2 diabetes.
Adverse effects
Orthostatic hypotension, vomiting, vertigo, headaches, upset stomach, coronary vasospasm, pulmonary fibrosis, hepatotoxicity.

A dopamine D2-receptor inhibitor which inhibits T-cell-dependent induction of macrophage tumouricidal activity.


A brand name for BROMOCRIPTINE.
References in periodicals archive ?
Although Sandoz, the manufacturer of Parlodel, must bear primary responsibility for this tragedy," wrote Public Citizen Heath Research Group Director Dr.
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The parties' appellate briefs in a case upholding a verdict against the manufacturer of Parlodel.
Besides ongoing investments - in the Group's production plants, for example, these important events occurred in 2006: In Q1, Meda acquired the Parlodel product for SEK 375.
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With its new campaign, Ferring hopes to establish NORPROLAC as a strong competitor among market leaders DOSTINEX (Pfizer) and PARLODEL (Norvartis).
In March, Meda acquired the European rights to the Parlodel product from Novartis, a Swiss pharma company, for SEK 375.
He was also responsible for the national recall of three dangerous products _- the Remington 600 rifle, the Honda All Terrain Three Wheeler and the prescription drug Parlodel.
Recently acquired Parlodel is included in sales as of March.
Meda entered into an agreement with Novartis, a Swiss Pharma company, for acquisition of the European rights to the Parlodel product.
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