Preformulation studies for atorvastatin calcium

An instrumental approach


This paper deals with the study of compatibility between antihyperlipidemic agent atorvastatin calcium trihydrate (ATV) and eight pharmaceutical excipients used in the development of solid dosage forms, namely citric acid, anhydrous lactose, magnesium citrate, magnesium carbonate, sodium carboxymethyl cellulose, polyvinylpyrrolidone K30, colloidal silica and sorbitol. As investigational tools, universal attenuated total reflectance Fourier transform infrared spectroscopy and powder X-ray diffractogram patterns were used for binary mixtures of ATV with each excipient at ambient condition and then completed by subjecting the samples to thermal stress using thermal analysis (TG/DTG/HF), in non-isothermal conditions and in oxidative medium. It was shown the binary mixtures do not present interactions between ATV and excipients when stored under ambient conditions for 2 months, while under thermal stress, ATV presents interactions with sorbitol.

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Correspondence to Ionuţ Ledeţi.

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Cristea, M., Baul, B., Ledeţi, I. et al. Preformulation studies for atorvastatin calcium. J Therm Anal Calorim 138, 2799–2806 (2019).

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  • Atorvastatin
  • Compatibility study
  • Excipient
  • FTIR
  • PXRD
  • Statin
  • Thermal stability