cycloset
Cycloset (Bromocriptine Mesylate) is an ergot derivative used to treat Acromegaly, Adenoma, Amenorrhea, Galactorrhea.
Bromocriptine Mesylate · by Veroscience
Available as a generic: Bromocriptine Mesylate
Key facts
- Active ingredient
- Bromocriptine Mesylate
- Drug class
- Ergot Derivative
- Form
- Tablet
- Strength
- Bromocriptine Mesylate EQ 0.8MG Base
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- acromegaly, adenoma, amenorrhea
- Manufacturer
- Veroscience
- Half-life
- about 4.85 hours (how long it stays in your system)
- What the pharmacy pays
- ~$52.02 for 30 — not your price
- FDA application
- NDA020866
What is Cycloset?
From the FDA label:Tablets contain micronized bromocriptine mesylate, an ergot derivative. Bromocriptine mesylate is chemically designated [Ergotaman-3',6',18-trione, 2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-, monomethanesulfonate (salt), (5'α)-]. CYCLOSET is a single enantiomer with absolute configuration 5 R , 8 R , 2' R , 5' S , 11' S , 12' S . The structural formula of bromocriptine is shown below: Bromocriptine mesylate in CYCLOSET is a white or slightly colored micronized crystalline powder with a molecular formula of C 32 H 40 BrN 5 O 5 ∙CH 4 SO 3 and a molecular weight of 750.72. CYCLOSET Tablets contain bromocriptine mesylate USP in an amount equivalent to 0.8 mg. of bromocriptine. Each tablet contains the following inactive ingredients: lactose, corn starch, magnesium stearate, colloidal silicon dioxide, and citric acid. Chemical Structure
How to use
Taken within two hours after waking in the morning with food ( 2.1 ) Initial dose is one tablet (0.8 mg) daily increased weekly by one tablet until maximal tolerated daily dose of 1.6 to 4.8 mg is achieved. ( 2.2 ) Limit dose to 1.6 mg daily during concomitant use of a moderate CYP3A4 inhibitor. Avoid concomitant use with strong CYP3A4 inhibitors. ( 2.3 ) 2.1 Recommended Dosing The recommended dose of CYCLOSET is 1.6 mg to 4.8 mg administered once daily within two hours after waking in the morning. CYCLOSET should be taken with food to potentially reduce gastrointestinal side effects such as nausea. If the morning dose is missed, instruct patients to take their usual dose the following morning. Doses of CYCLOSET should not be doubled the following morning. 2.2 Titration CYCLOSET should be initiated at one tablet (0.8 mg) and increased by one tablet per week until a maximum daily dose of 6 tablets (4.8 mg) or until the maximal tolerated number of tablets between 2 and 6 per day is reached. 2.3 Use with Concomitant Therapy CYCLOSET dose should not exceed 1.6 mg once daily during concomitant use of a moderate CYP3A4 inhibitor (e.g., erythromycin). Avoid concomitant use of CYCLOSET and strong CYP3A4 inhibitors (e.g., azole antimycotics, HIV protease inhibitors) and ensure adequate washout of the strong CYP3A4 inhibitor drug before initiating CYCLOSET treatment [see Drug…
Side effects
The following clinically significant adverse reactions are described elsewhere in the labeling: Hypotension [see Warnings and Precautions (5.1) ] Psychotic Disorders [see Warnings and Precautions (5.2) ] Somnolence [see Warnings and Precautions (5.4) ] Risks in Postpartum Women [see Warnings and Precautions (5.7) ] In controlled clinical trials, adverse reactions reported in ≥5% of patients treated with CYCLOSET and reported more commonly than in patients treated with placebo, included nausea, fatigue, dizziness, vomiting, and headache. ( 6.1 ) Postmarketing reports with higher doses of bromocriptine used for other indications include psychotic disorders, hallucinations, and fibrotic complications. ( 6.2 ) To report SUSPECTED ADVERSE REACTIONS, contact VeroScience, LLC at 1-888-621-1215 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, the adverse reaction rates reported in one clinical trial may not be easily compared to those rates reported in another clinical trial and may not reflect the rates actually observed in clinical practice. The CYCLOSET safety trial was a 52-week, placebo-controlled study. A total of 3,070 patients were randomized to CYCLOSET (titrated to 1.6 to 4.8 mg daily, as tolerated) or placebo. The study population had a mean baseline age of 60 years (range…
Warnings
Important safety information
Hypotension: Can cause orthostatic hypotension and syncope, particularly upon initiation or dose escalation. Use caution in patients taking antihypertensive medications. Assess orthostatic vital signs prior to initiation of CYCLOSET and periodically thereafter. Advise patients during early treatment to avoid situations that could lead to injury if syncope was to occur. ( 5.1 , 6.1 ) Psychosis: May exacerbate psychotic disorders or reduce the effectiveness of drugs that treat psychosis. Use in patients with severe psychotic disorders is not recommended. ( 5.2 ) Impulse control/compulsive behaviors: Ask patients or their caregivers about new or increased gambling urges, sexual urges, uncontrolled spending, or other urges while being treated with CYCLOSET. Consider dose reduction or stopping CYCLOSET if a patient develops such urges. Use of CYCLOSET in patients with impulse control/compulsive behaviors is not recommended. ( 5.3 , 6.2 ). Somnolence: May cause somnolence. Advise patients not to operate heavy machinery if symptoms of somnolence occur. ( 5.4 ) Interaction with dopamine antagonists: Concomitant use with dopamine antagonists such as neuroleptic agents may diminish the effectiveness of both drugs. Concomitant use is not recommended. ( 5.5 , 7 ) Other dopamine receptor agonists: Effectiveness and safety are unknown in patients already taking dopamine receptor agonists for other indications. Concomitant use is not recommended. ( 5.6 ) Risks in Postpartum Patients: Serious and life-threatening adverse reactions have been reported. ( 5.7 , 6.2 ) 5.1 Hypotension Hypotension, including orthostatic hypotension, can occur, particularly upon initiation of CYCLOSET therapy and with dose escalation. In a 52-week, randomized clinical trial of 3070 patients, hypotension was reported in 2.2% of patients randomized to CYCLOSET compared to 0.8% of patients randomized to placebo. Among CYCLOSET-treated patients reporting symptomatic hypotension, 98% were on at least one blood pressure medication compared to 73% on such medication in the total study population. In this trial, six CYCLOSET-treated patients (0.3%) reported orthostatic hypotension compared to 2 (0.2%) placebo-treated patients. All six patients were taking antihypertensive medications. Hypotension can result in syncope. In this trial, syncope due to any cause was reported in 1.6% of CYCLOSET-treated patients and 0.7% of placebo-treated patients [see Adverse Reactions (6.1) ] . As a precaution, assessment of orthostatic vital signs is recommended prior to initiation of CYCLOSET and periodically thereafter. Advise patients during early treatment with CYCLOSET to make slow postural changes and to avoid situations that could lead to serious injury if syncope was to occur. Use caution in patients taking antihypertensive medications. 5.2 Psychotic Disorders In patients with severe psychotic disorders, treatment with a dopamine receptor agonist such as CYCLOSET may exacerbate the disorder or may diminish the effectiveness of drugs used to treat the disorder. Therefore, the use of CYCLOSET in patients with severe psychotic disorders is not recommended. 5.3 Impulse Control/Compulsive Behaviors There have been reports of patients experiencing intense urges to gamble, increased sexual urges, intense urges to spend money uncontrollably, and/or other intense urges, and the inability to control these urges while taking one or more of the medications, including bromocriptine, that increase central dopaminergic tone. In some cases, although not all, these urges were reported to have stopped when the dose was reduced, or the medication was discontinued. Because patients may not recognize these behaviors as abnormal, it is important to specifically ask patients or their caregivers about the development of new or increased gambling urges, sexual urges, uncontrolled spending, or other urges while being treated with CYCLOSET. Consider dose reduction or discontinuation if a patient develops such urges. 5.4 Somnolence CYCLOSET may cause somnolence. In a 52-week, randomized clinical trial, 4.3% of CYCLOSET-treated patients and 1.3% of placebo-treated patients reported somnolence. None of these events were reported as serious, and the majority of patients reported resolution of somnolence over time. Inform patients of the risk of somnolence, particularly when initiating therapy with CYCLOSET. Patients experiencing somnolence should refrain from driving or operating heavy machinery. 5.5 Interaction with Dopamine Receptor Antagonists Dopamine receptor antagonists, including neuroleptic agents that have dopamine D2 receptor antagonist properties (e.g., clozapine, olanzapine, ziprasidone), may reduce the effectiveness of CYCLOSET, and CYCLOSET may reduce the effectiveness of these agents. CYCLOSET has not been studied in patients taking neuroleptic drugs. The concomitant use of CYCLOSET and dopamine receptor antagonists, including neuroleptic drugs, is not recommended. 5.6 Other Dopamine Receptor Agonists Other dopamine receptor agonists are indicated for the treatment of Parkinson's disease, hyperprolactinemia, restless leg syndrome, acromegaly, and other disorders. The effectiveness and safety of CYCLOSET in patients who are already taking one of these other dopamine receptor agonists is unknown. Concomitant use is not recommended. 5.7 Risks in Postpartum Patients CYCLOSET is contraindicated in postpartum patients. Serious and life-threatening adverse reactions including hypertension, myocardial infarction, seizures, stroke and psychosis have been reported postmarketing in postpartum women who were administered bromocriptine for inhibition of lactation [see Adverse Reactions (6.2) ] . These risks may be higher in postpartum patients with cardiovascular disease. The indication for use of bromocriptine for inhibition of postpartum lactation was withdrawn from bromocriptine-containing products and is not approved for CYCLOSET.
Who should not take Cycloset
CYCLOSET is contraindicated in: Patients with known hypersensitivity to bromocriptine, ergot-related drugs, or any of the excipients in CYCLOSET. Patients with syncopal migraine. Bromocriptine increases the likelihood of a hypotensive episode among patients with syncopal migraine. Loss of consciousness during a migraine may reflect dopamine receptor hypersensitivity. CYCLOSET is a dopamine receptor agonist and may, therefore, potentiate the risk for syncope in these patients. Postpartum patients. Serious and life-threatening adverse reactions have been reported with bromocriptine use in this population [see Warnings and Precautions (5.7) , Adverse Reactions (6.2) ] . Lactating patients. CYCLOSET contains bromocriptine which inhibits lactation [see Use in Specific Populations (8.2) ] . Hypersensitivity to ergot-related drugs, bromocriptine or to any of the excipients in CYCLOSET. ( 4 ) History of syncopal migraines. ( 4 ) Postpartum patients ( 4 , 5.7 ) Lactating patients ( 4 , 8.2 )
Overdose — what happens if you take too much
With another formulation of bromocriptine mesylate, the most commonly reported signs and symptoms associated with acute overdose were nausea, vomiting, constipation, diaphoresis, dizziness, pallor, severe hypotension, malaise, confusion, lethargy, drowsiness, delusions, hallucinations, and repetitive yawning. The lethal dose has not been established. Treatment of overdose consists of removal of the drug by emesis (if conscious), gastric lavage, activated charcoal, or saline catharsis. Careful supervision and recording of fluid intake and output is essential. Hypotension should be treated by placing the patient in the Trendelenburg position and administering intravenous fluids. If satisfactory relief of hypotension cannot be achieved by using the above measures to their fullest extent, vasopressors should be considered.
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
Interactions
The active ingredient in CYCLOSET (bromocriptine mesylate) is highly bound to serum proteins. Therefore, CYCLOSET may increase the unbound fraction of other concomitantly used highly protein-bound therapies (e.g., salicylates, sulfonamides, chloramphenicol and probenecid), which may alter their effectiveness and risk for side effects. CYCLOSET is a dopamine receptor agonist. Concomitant use of dopamine receptor antagonists, such as neuroleptics (e.g., phenothiazines, butyrophenones, thioxanthenes), or metoclopramide may diminish the effectiveness of CYCLOSET, and CYCLOSET may diminish the effectiveness of these other therapies. The concurrent use of CYCLOSET with these agents has not been studied in clinical trials and is not recommended [see Warnings and Precautions (5.5) ]. CYCLOSET in combination with ergot-related drugs may cause an increase in the occurrence of ergot-related side effects, such as nausea, vomiting, and fatigue, and may also reduce the effectiveness of these ergot therapies when used to treat migraine. The concurrent use of these ergot agents within 6 hours of CYCLOSET dosing is not recommended. CYCLOSET is extensively metabolized by the liver via CYP3A4. Therefore, potent inhibitors or inducers of CYP3A4 may increase or reduce the circulating levels of CYCLOSET, respectively. Use caution when co-administering drugs that are inhibitors or inducers of CYP3A4. CYCLOSET dose should not exceed 1.6 mg once daily during concomitant use of a moderate CYP3A4 inhibitor (e.g., erythromycin). Concomitant use of strong CYP3A4 inhibitors (e.g., azole antimycotics, HIV protease inhibitors) with CYCLOSET should be avoided. Ensure adequate washout of the strong CYP3A4 inhibitor drug before initiating CYCLOSET treatment [see Clinical Pharmacology (12.3) ] . There are postmarketing reports of hypertension and tachycardia when bromocriptine was co-administered with sympathomimetic drugs (e.g., phenylpropanolamine and isometheptene) in postpartum women. There are limited clinical trial data supporting the safety of co-administering sympathomimetic drugs and CYCLOSET for more than 10 days. Therefore, concomitant use of these agents with CYCLOSET for more than 10 days duration is not recommended. Also, there are limited clinical trial data supporting the safety of selective 5-hydroxytryptamine 1B (5-HT 1B ) agonists (e.g., sumatriptan) used concurrently with CYCLOSET, and the concomitant use of these agents with CYCLOSET should be avoided. May increase the unbound fraction of highly protein-bound therapies, altering their effectiveness and safety profiles. ( 7 ) May increase ergot-related side effects or reduce ergot effectiveness for migraines if co-administered within 6 hours of ergot-related drugs. ( 7 ) Extensively metabolized by CYP3A4. Limit CYCLOSET dose to 1.6 mg/day during concomitant use of moderate CYP3A4 inhibitors. Avoid concomitant use of CYCLOSET with strong CYP3A4 inhibitors. ( 2.3 , 7 )
How long does Bromocriptine Mesylate stay in your body?
The elimination half-life of bromocriptine mesylate is about 4.85 hours — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. Single value from one small study (5 healthy fasted adults, single 5 mg dose); the label reports it simply as the "elimination half-life" and gives no separate distribution/terminal phases. Bromocriptine is not a prodrug. It has an active metabolite profile from extensive first-pass CYP3A metabolism, but the label explicitly states the pharmacokinetics of its metabolites "have not been reported," so no metabolite half-life is available — do not assume the parent value covers them. Special populations: the label says the effect of renal impairment, hepatic impairment, age, race, and gender on PK was NOT evaluated. It notes renal impairment likely has little impact (only ~6% renal excretion), but hepatic impairment may increase bromocriptine plasma levels since it is cleared mainly by metabolism, so caution is advised.
This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: Bromocriptine Mesylate Tablet — DailyMed Label, Clinical Pharmacology / Pharmacokinetics.
Drug class
May treat (source: NIH RxClass)
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Dosage forms
Tablet
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
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Frequently asked questions
- What does Cycloset treat?
- Cycloset (Bromocriptine Mesylate) may be used to treat acromegaly, adenoma, amenorrhea, galactorrhea, hyperprolactinemia, hypogonadism, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How much does Cycloset cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $52.02 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Cycloset?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Cycloset. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Cycloset?
- Cycloset is marketed by Veroscience. You can see Veroscience's full profile, rating, and other products on pharmaranks.
- Is Cycloset a brand-name or generic drug?
- Cycloset is a brand-name product with the active ingredient Bromocriptine Mesylate. Lower-cost generic equivalents containing Bromocriptine Mesylate are available — ask your pharmacist.
- Is Cycloset available over the counter?
- No. Cycloset is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Cycloset come in?
- Cycloset is currently marketed as tablet, per the FDA's National Drug Code Directory.
- What class of drug is Cycloset?
- Cycloset is classified as ergot derivative, per the FDA's Established Pharmacologic Class.
- Is Cycloset FDA-registered?
- Cycloset is on record with the U.S. FDA under application number NDA020866. You can verify this on its official FDA label.
- Is Cycloset safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Cycloset. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Cycloset?
- Cycloset's side effects are taken directly from its FDA label. From the label: The following clinically significant adverse reactions are described elsewhere in the labeling: Hypotension [see Warnings and Precautions (5.1) ] Psychotic Disorders [see Warnings and Precautions (5.2) ] Somnolence [see Warnings and Precautions (5.4) ] Risks in Postpartum Women [see Warnings and Pre… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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