U.S. flag An official website of the United States government

On Oct. 1, 2024, the FDA began implementing a reorganization impacting many parts of the agency. We are in the process of updating FDA.gov content to reflect these changes.

  1. Home
  2. Drugs
  3. Guidance, Compliance, & Regulatory Information
  4. Surveillance: Post Drug-Approval Activities
  5. FDA's Adverse Event Reporting System (FAERS)
  6. October - December 2017 | Potential Signals of Serious Risks/New Safety Information Identified from the FDA Adverse Event Reporting System (FAERS)
  1. FDA's Adverse Event Reporting System (FAERS)

October - December 2017 | Potential Signals of Serious Risks/New Safety Information Identified from the FDA Adverse Event Reporting System (FAERS)

Product Name: Trade (Active Ingredient) or Product Class

Potential Signal of a Serious Risk / New Safety Information

Additional Information
(as of January 31, 2025)

  • Asclera (polidocanol) injection
  • Sotradecol (sodium tetradecyl sulfate) injection
  • Varithena (polidocanol) injectable foam 
Cardiovascular adverse events 

For Asclera and Sotradecol, the “Warnings and Precautions” section of labeling was updated to include the risk of arterial embolism. 

Asclera labeling 

Sotradecol labeling 

No regulatory action was warranted for Varithena. 

Cytotec (misoprostol) tablets High fevers (greater than 104 degrees Fahrenheit or 40 degrees Celsius) 

The “Precautions” section of labeling was updated to include high fevers greater than 104 degrees Fahrenheit or 40 degrees Celsius. 

Cytotec labeling 

Emend (fosaprepitant) for injection Infusion site reactions 

Updated

The “Highlights”, “Warnings and Precautions”, and “Patient Counseling Information” sections of the Emend labeling were updated in March 2018 to include infusion site reactions.

Emend labeling

Erythrocin Lactobionate – IV (erythromycin lactobionate) for injection Drug interaction with HMG-CoA reductase inhibitors (lovastatin and simvastatin) extensively metabolized by CYP3A4 (enzyme) resulting in myopathy and rhabdomyolysis 

Updated

The “Contraindications” section of the Erythrocin labeling was updated in April 2018 to contraindicate concomitant use of lovastatin and simvastatin.

Erythrocin Lactobionate – IV labeling 

  • Fortamet (metformin hydrochloride) extended-release tablets
  • Glucophage (metformin hydrochloride) tablets
  • Glucophage XR (metformin hydrochloride) extended-release tablets
  • Glumetza (metformin hydrochloride) extended-release tablets
  • Riomet (metformin hydrochloride) oral solution 
Serious skin reactions 

Updated

FDA decided that no action is necessary at this time based on available information. 

Lamictal (lamotrigine) tablets Labetalol-lamotrigine name confusion/medication errors associated with serious outcomes FDA decided that no action is necessary at this time based on available information. 
Lexiscan (regadenoson) injection Serious cardiac adverse events following prolonged Lexiscan administration (>10 seconds) 

Updated

The “Dosage and Administration” and “Warnings and Precautions” sections of the Lexiscan labeling were updated in May 2018 to reinforce adherence to the recommended duration of injection.

Lexiscan labeling 

Muscle Relaxants 

  • Amrix (cyclobenzaprine hydrochloride) extended release capsules
  • Equagesic (aspirin and meprobamate) tablets
  • Maolate (chlorphenesin carbamate) tablets
  • Metaxalone Tablets (metaxalone) tablets
  • Norflex (orphenadrine citrate) extended release tablets
  • Norflex (orphenadrine citrate) injection
  • Norgesic (aspirin, caffeine, orphenadrine citrate) tablets
  • Parafon Forte DSC (chlorzoxazone) tablets
  • Robaxin (methocarbamol) injection
  • Robaxin (methocarbamol) tablets
  • Skelaxin (metaxalone) tablets
  • Soma (carisoprodol) tablets 
Serotonin syndrome 

Updated

FDA decided that no action is necessary at this time based on available information. 

ProvayBlue (methylene blue) injection Inappropriate dilution of medication 

Updated

The carton and container labels of ProvayBlue were updated in May 2018 to clarify the appropriate solution for dilution.

ProvayBlue labeling 

Singulair (montelukast sodium) tablets Neuropsychiatric adverse reactions 

Updated

The “Boxed Warning”, “Indications and Usage”, “Warnings and Precautions”, “Overdosage”, “Pharmacokinetics”, “Patient Counseling”, and “Medication Guide” sections of the labeling were updated in April 2020 to include information about the risk of neuropsychiatric events.

Singulair labeling

An FDA Drug Safety Communication was issued on March 4, 2020.

Sodium-Glucose Cotransporter-2 (SGLT-2) Inhibitors 

  • Farxiga (dapagliflozin) tablets
  • Glyxambi (empagliflozin and linagliptin) tablets
  • Invokana (canagliflozin) tablets
  • Invokamet (canagliflozin and metformin hydrochloride) tablets
  • Invokamet XR (canagliflozin and metformin hydrochloride extended-release) tablets
  • Jardiance (empagliflozin) tablets
  • Qtern (dapagliflozin and saxagliptin) tablets
  • Synjardy (empagliflozin and metformin hydrochloride) tablets
  • Synjardy XR (empagliflozin and metformin hydrochloride extended-release) tablets
  • Xigduo XR (dapagliflozin and metformin hydrochloride extended-release) tablets 
Fournier’s gangrene 

Updated

The “Warnings and Precautions”, “Adverse Reactions”, “Patient Counseling Information” and “Medication Guide” sections of the SGLT-2 inhibitor product labeling were updated in October 2018 to include necrotizing fasciitis of the perineum (Fournier’s gangrene).

Example: Farxiga labeling 

Viberzi (eluxadoline) tablets Anaphylaxis and hypersensitivity 

The “Warnings and Precautions” and the “Adverse Reactions” sections of labeling were updated to include hypersensitivity.  The Medication Guide was updated to include serious allergic reactions. 

Viberzi labeling 

 

Back to Top