Background
Quality of medicines is necessary to ensure patient safety. Quality failures of medicines could result in patient harm. Many medicine quality problems are detected after they arrive at health facilities. Thus, medicine withholds, and recalls are conducted for critically defective medicines that pose health risks to patients.
Aims
To investigate the withheld and recalled medicines in relation to the types of defects, their frequencies, therapeutic categories, pharmaceutical dosage forms, and country of manufacturer.
Methods
A retrospective review was done on withheld and recalled medicines published on the publicly available National Medicines Regulatory Authority (NMRA) official website, Sri Lanka between June 2018 and January 2022. Two categories of defective medicine alerts were identified: falsified medicines (FM) and substandard medicines (SM), out of which SM were extracted and included as none of the FM was reported in Sri Lanka. Each record of SM was individually reviewed to determine the type of defect, therapeutic category, pharmaceutical dosage form, manufacturer with respect to his country and respective frequencies.
Results
Among 163 total defects reported, the most common types of defects were contamination (N = 59, 36.2%), stability defects (N = 41, 25.2%), packaging and labelling defects (N = 27, 16.6%) and Active Pharmaceutical Ingredient (API) defects (N = 26, 15.9%). Out of 143 total defective medicines identified, anti-infectives (for systemic use) accounted for 42.2%, while parenteral preparations (N = 63, 44.0%) were found to be frequently defective. Nearly 70% of the recalled and withheld medicines were of Indian origin and seven manufacturers were identified as repeatedly involved with medicine withholds and recalls.
Conclusions
Substandard medicines are a problem in Sri Lanka and have resulted in an increasing number of withheld and recalled medicines. This study revealed that contaminations were the most frequent cause of defective medicines while parenteral preparations and anti-infectives were the most susceptible pharmaceutical dosage form as well as therapeutic category to be substandard. In addition, some manufacturers were accountable for repetitive withholds and recalls. Therefore, this review highlights the need of investigating the underlying causes and preventive measures to be implemented by manufacturers and regulatory authorities to avoid similar episodes in future.