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A tiered analytical approach for investigating poor quality emergency contraceptives.

ABSTRACT: Reproductive health has been deleteriously affected by poor quality medicines. Emergency contraceptive pills (ECPs) are an important birth control method that women can use after unprotected coitus for reducing the risk of pregnancy. In response to the detection of poor quality ECPs commercially available in the Peruvian market we developed a tiered multi-platform analytical strategy. In a survey to assess ECP medicine quality in Peru, 7 out of 25 different batches showed inadequate release of levonorgestrel by dissolution testing or improper amounts of active ingredient. One batch was found to contain a wrong active ingredient, with no detectable levonorgestrel. By combining ultrahigh performance liquid chromatography-ion mobility spectrometry-mass spectrometry (UHPLC-IMS-MS) and direct analysis in real time MS (DART-MS) the unknown compound was identified as the antibiotic sulfamethoxazole. Quantitation by UHPLC-triple quadrupole tandem MS (QqQ-MS/MS) indicated that the wrong ingredient was present in the ECP sample at levels which could have significant physiological effects. Further chemical characterization of the poor quality ECP samples included the identification of the excipients by 2D Diffusion-Ordered Nuclear Magnetic Resonance Spectroscopy (DOSY 1H NMR) indicating the presence of lactose and magnesium stearate.

SUBMITTER: Monge ME

PROVIDER: S-EPMC3991657 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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A tiered analytical approach for investigating poor quality emergency contraceptives.

Monge María Eugenia ME Dwivedi Prabha P Zhou Manshui M Payne Michael M Harris Chris C House Blaine B Juggins Yvonne Y Cizmarik Peter P Newton Paul N PN Fernández Facundo M FM Jenkins David D

PloS one 20140418 4

Reproductive health has been deleteriously affected by poor quality medicines. Emergency contraceptive pills (ECPs) are an important birth control method that women can use after unprotected coitus for reducing the risk of pregnancy. In response to the detection of poor quality ECPs commercially available in the Peruvian market we developed a tiered multi-platform analytical strategy. In a survey to assess ECP medicine quality in Peru, 7 out of 25 different batches showed inadequate release of l ...[more]

PMID: 24748219

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A tiered analytical approach for investigating poor quality emergency contraceptives.

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A tiered analytical approach for investigating poor quality emergency contraceptives.

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