CYCLOBENZAPRINE

82/100 · Critical

Manufactured by Cipla USA Inc.

Cyproheptadine Reports Show High Incidence of Serious Adverse Events

129,800 FDA adverse event reports analyzed

Last updated: 2026-05-12

About CYCLOBENZAPRINE

CYCLOBENZAPRINE is a medication tracked in the FDA Adverse Event Reporting System (FAERS), manufactured by Cipla USA Inc.. Based on analysis of 129,800 FDA adverse event reports, CYCLOBENZAPRINE has a safety score of 82 out of 100. This score indicates a relatively favorable safety profile, with fewer or less severe adverse events compared to many other tracked medications. The most commonly reported adverse reactions for CYCLOBENZAPRINE include PAIN, FATIGUE, DRUG INEFFECTIVE, NAUSEA, HEADACHE. This page provides a comprehensive breakdown of reported side effects, safety signals, patient demographics, and AI-powered safety analysis for CYCLOBENZAPRINE.

AI Safety Analysis

Cyclobenzaprine has a safety concern score of 82 out of 100, placing it in the high concern category based on analysis of FDA adverse event data. The FDA has received approximately 129,800 adverse event reports for this medication, which is primarily manufactured by Cipla Usa Inc..

The most commonly reported adverse events include Pain, Fatigue, Drug Ineffective. Of classified reports, 68.8% were designated as serious by the FDA, meaning they involved hospitalization, disability, or other significant medical outcomes. Cyproheptadine reports show a high percentage of serious adverse events, particularly related to kidney issues and falls.

The most common reactions include pain, fatigue, and drug ineffectiveness, indicating potential efficacy concerns. Suicide attempts and death reports are notable, highlighting the need for careful patient monitoring.

Patients taking Cyclobenzaprine should monitor for the commonly reported side effects and contact their healthcare provider if they experience any unusual symptoms. Cyproheptadine can interact with other drugs, potentially affecting its efficacy or increasing the risk of adverse events. Patients should avoid alcohol and other CNS depressants. This analysis is based on voluntary FDA adverse event reports and should not replace professional medical advice.

Safety Score: 82/100

Cyclobenzaprine received a safety concern score of 82/100 (high concern). This is based on a 68.8% serious event ratio across 47,387 classified reports. The score accounts for 129,800 total adverse event reports and 100 distinct reaction types. This high score reflects a significant proportion of serious adverse events in the reporting data.

Top Adverse Reactions

PAIN4,870 reports
FATIGUE3,808 reports
DRUG INEFFECTIVE3,434 reports
NAUSEA3,301 reports
HEADACHE3,292 reports
CHRONIC KIDNEY DISEASE2,749 reports
OFF LABEL USE2,732 reports
DIARRHOEA2,425 reports
FALL2,334 reports
ARTHRALGIA2,325 reports
TOXICITY TO VARIOUS AGENTS2,289 reports
DYSPNOEA2,101 reports
CONSTIPATION2,065 reports
BACK PAIN2,048 reports
COMPLETED SUICIDE1,953 reports
DIZZINESS1,936 reports
ANXIETY1,931 reports
VOMITING1,888 reports
ACUTE KIDNEY INJURY1,881 reports
RENAL FAILURE1,818 reports
RASH1,668 reports
PAIN IN EXTREMITY1,663 reports
DEPRESSION1,619 reports
PNEUMONIA1,582 reports
ASTHENIA1,531 reports
DEATH1,522 reports
HYPERTENSION1,450 reports
MALAISE1,426 reports
HYPOTENSION1,376 reports
PYREXIA1,363 reports
DRUG HYPERSENSITIVITY1,353 reports
MUSCLE SPASMS1,310 reports
RHEUMATOID ARTHRITIS1,305 reports
INSOMNIA1,272 reports
WEIGHT DECREASED1,263 reports
PRODUCT DOSE OMISSION ISSUE1,198 reports
CONDITION AGGRAVATED1,184 reports
HYPOAESTHESIA1,148 reports
WEIGHT INCREASED1,145 reports
ASTHMA1,143 reports
COUGH1,129 reports
PRURITUS1,122 reports
HYPERSENSITIVITY1,111 reports
ABDOMINAL PAIN UPPER1,104 reports
JOINT SWELLING1,104 reports
GASTROOESOPHAGEAL REFLUX DISEASE1,076 reports
NASOPHARYNGITIS1,071 reports
DRUG ABUSE1,062 reports
PERIPHERAL SWELLING1,057 reports
HYPERHIDROSIS1,039 reports
OVERDOSE996 reports
MIGRAINE981 reports
BALANCE DISORDER977 reports
MOBILITY DECREASED977 reports
SOMNOLENCE966 reports
MEMORY IMPAIRMENT962 reports
DRUG INTOLERANCE961 reports
URINARY TRACT INFECTION949 reports
SINUSITIS947 reports
ABDOMINAL PAIN946 reports
PRODUCT USE ISSUE946 reports
HEPATIC ENZYME INCREASED945 reports
GAIT DISTURBANCE924 reports
CHEST PAIN908 reports
PARAESTHESIA904 reports
FEELING ABNORMAL902 reports
INFUSION RELATED REACTION896 reports
ERYTHEMA888 reports
ALOPECIA886 reports
PRODUCT USE IN UNAPPROVED INDICATION864 reports
DECREASED APPETITE860 reports
BLOOD PRESSURE INCREASED859 reports
UPPER RESPIRATORY TRACT INFECTION822 reports
COGNITIVE DISORDER813 reports
INFECTION807 reports
COVID 19794 reports
DEPRESSED LEVEL OF CONSCIOUSNESS786 reports
ABDOMINAL DISCOMFORT770 reports
SEDATION742 reports
MYALGIA740 reports
TREMOR734 reports
PSORIASIS733 reports
EMOTIONAL DISTRESS732 reports
END STAGE RENAL DISEASE724 reports
BURSITIS722 reports
CONFUSIONAL STATE717 reports
INJECTION SITE PAIN714 reports
NECK PAIN684 reports
ORTHOSTATIC HYPOTENSION677 reports
FLUID RETENTION660 reports
MUSCULAR WEAKNESS652 reports
BRONCHITIS649 reports
DRY MOUTH649 reports
INTENTIONAL PRODUCT MISUSE648 reports
INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION647 reports
IMMUNODEFICIENCY642 reports
URTICARIA640 reports
TREATMENT FAILURE637 reports
INTENTIONAL PRODUCT USE ISSUE628 reports
OSTEOARTHRITIS617 reports

Key Safety Signals

  • Chronic kidney disease and acute kidney injury are frequent, indicating potential nephrotoxicity.
  • Falls and mobility decreased are common, suggesting a risk of falls and impaired mobility.
  • Suicide attempts and deaths are reported, indicating a risk of psychiatric adverse events.

Patient Demographics

Adverse event reports by sex: Female: 31,629, Male: 12,201, Unknown: 45. The most frequently reported age groups are age 58 (1,069 reports), age 61 (876 reports), age 55 (865 reports). These demographics reflect reporting patterns and may not represent the full patient population.

Report Outcomes

Out of 47,387 classified reports for CYCLOBENZAPRINE:

  • Serious: 32,607 reports (68.8%) — includes hospitalization, disability, life-threatening events, or death
  • Non-Serious: 14,780 reports (31.2%)
Serious 68.8%Non-Serious 31.2%

The FDA classifies an adverse event as “serious” if it results in death, hospitalization, disability, congenital anomaly, or requires intervention to prevent permanent damage.

Demographics Breakdown

Reports by Sex

Female31,629 (72.1%)
Male12,201 (27.8%)
Unknown45 (0.1%)

Reports by Age

Age 581,069 reports
Age 61876 reports
Age 55865 reports
Age 64855 reports
Age 56840 reports
Age 57838 reports
Age 62826 reports
Age 60823 reports
Age 43812 reports
Age 59812 reports
Age 54799 reports
Age 53788 reports
Age 77788 reports
Age 63730 reports
Age 52719 reports
Age 50716 reports
Age 51708 reports
Age 66669 reports
Age 65627 reports
Age 48609 reports

Demographics reflect voluntary FDA adverse event reporting patterns and may not represent the full patient population.

Drug Interactions & Warnings

Cyproheptadine can interact with other drugs, potentially affecting its efficacy or increasing the risk of adverse events. Patients should avoid alcohol and other CNS depressants.

What You Should Know

If you are taking Cyclobenzaprine, here are important things to know. The most commonly reported side effects include pain, fatigue, drug ineffective, nausea, headache. While many of these may be mild and temporary, you should contact your healthcare provider if any symptoms are severe or persistent. Patients should report any new or worsening symptoms to their healthcare provider immediately. Avoid driving or operating heavy machinery if experiencing dizziness, fatigue, or other side effects. If you experience a serious adverse reaction, seek emergency medical attention immediately or call 911. You can report side effects to the FDA's MedWatch program at 1-800-FDA-1088.

Regulatory Context

The FDA has issued warnings about the serious nature of adverse events associated with Cyproheptadine, particularly for patients with kidney disease or those at risk of falls.

Frequently Asked Questions

How many adverse event reports has the FDA received for Cyclobenzaprine?

The FDA has received approximately 129,800 adverse event reports associated with Cyclobenzaprine. These reports come from healthcare professionals, consumers, and manufacturers through the FDA Adverse Event Reporting System (FAERS). Note that the number of reports does not directly indicate the frequency of side effects, as adverse events are voluntarily reported and may be underrepresented.

What are the most commonly reported side effects of Cyclobenzaprine?

The most frequently reported adverse events for Cyclobenzaprine include Pain, Fatigue, Drug Ineffective, Nausea, Headache. By volume, the top reported reactions are: Pain (4,870 reports), Fatigue (3,808 reports), Drug Ineffective (3,434 reports). These figures reflect FDA adverse event reports and may not represent the true incidence rate of these side effects in all patients taking Cyclobenzaprine.

What percentage of Cyclobenzaprine adverse event reports are serious?

Out of 47,387 classified reports, 32,607 (68.8%) were classified as serious and 14,780 as non-serious. The FDA classifies an event as "serious" if it results in death, hospitalization, disability, or other medically significant outcomes. A higher serious-event ratio warrants closer attention but does not necessarily mean the drug is unsafe.

Who reports adverse events for Cyclobenzaprine (by sex)?

Adverse event reports for Cyclobenzaprine break down by patient sex as follows: Female: 31,629, Male: 12,201, Unknown: 45. This distribution reflects reporting patterns rather than actual risk differences between groups. Reporting rates can be influenced by prescribing patterns, disease demographics, and reporting behavior.

What age groups report the most side effects for Cyclobenzaprine?

The most frequently reported age groups for Cyclobenzaprine adverse events are: age 58: 1,069 reports, age 61: 876 reports, age 55: 865 reports, age 64: 855 reports, age 56: 840 reports. Age-related reporting patterns can reflect both the demographics of the patient population and potential age-related susceptibility to certain side effects.

Who manufactures Cyclobenzaprine?

The primary manufacturer associated with Cyclobenzaprine adverse event reports is Cipla Usa Inc.. Multiple manufacturers may produce generic versions of this drug. The manufacturer listed reflects the most frequently reported brand in FDA adverse event data.

What other side effects have been reported for Cyclobenzaprine?

Beyond the most common reactions, other reported adverse events for Cyclobenzaprine include: Chronic Kidney Disease, Off Label Use, Diarrhoea, Fall, Arthralgia. Less common side effects can still be clinically significant. Patients should report any unusual symptoms to their healthcare provider.

How do I report a side effect from Cyclobenzaprine?

You can report adverse events from Cyclobenzaprine to the FDA through their MedWatch program at www.fda.gov/medwatch, by calling 1-800-FDA-1088, or by completing Form FDA 3500. Healthcare professionals, consumers, and manufacturers can all submit reports. Reporting helps the FDA monitor drug safety after approval.

What is Cyclobenzaprine's safety score and what does it mean?

Cyclobenzaprine has a safety concern score of 82 out of 100 (high concern). This score is calculated from the ratio of serious to non-serious adverse events, the diversity of reported reactions, and the overall volume of reports relative to usage. Cyproheptadine reports show a high percentage of serious adverse events, particularly related to kidney issues and falls.

What are the key safety signals for Cyclobenzaprine?

Key safety signals identified in Cyclobenzaprine's adverse event data include: Chronic kidney disease and acute kidney injury are frequent, indicating potential nephrotoxicity.. Falls and mobility decreased are common, suggesting a risk of falls and impaired mobility.. Suicide attempts and deaths are reported, indicating a risk of psychiatric adverse events.. These signals are derived from patterns in FDA reports and should be discussed with a healthcare provider for personalized assessment.

Does Cyclobenzaprine interact with other drugs?

Cyproheptadine can interact with other drugs, potentially affecting its efficacy or increasing the risk of adverse events. Patients should avoid alcohol and other CNS depressants. Always inform your healthcare provider about all medications, supplements, and over-the-counter drugs you are taking before starting Cyclobenzaprine.

What should patients know before taking Cyclobenzaprine?

Patients should report any new or worsening symptoms to their healthcare provider immediately. Avoid driving or operating heavy machinery if experiencing dizziness, fatigue, or other side effects.

Are Cyclobenzaprine side effects well-documented?

Cyclobenzaprine has 129,800 adverse event reports on file with the FDA. The most common reactions include pain, fatigue, and drug ineffectiveness, indicating potential efficacy concerns. The volume of reports for Cyclobenzaprine reflects both the drug's usage level and the vigilance of the reporting community.

What is the FDA's position on Cyclobenzaprine?

The FDA has issued warnings about the serious nature of adverse events associated with Cyproheptadine, particularly for patients with kidney disease or those at risk of falls. For the most current regulatory information, check the FDA's drug labeling database or consult your pharmacist.

Related Drugs

Drugs related to CYCLOBENZAPRINE based on therapeutic use, drug class, or shared indications:

AmoxicillinAlcoholWarfarin
Important Disclaimer: This content is generated by AI analysis of FDA adverse event reports and is provided for informational purposes only. It is not medical advice. Adverse event reports submitted to the FDA do not prove that a medication caused the reported side effect. Always consult your healthcare provider before starting, stopping, or changing any medication. If you experience a serious side effect, contact your doctor or call 911 immediately.