RESUMO
BACKGROUND: In pediatrics, developing new pharmaceutical forms that offer safety and efficacy is crucial to improve pediatric pharmaceutical care. Orodispersible tablets do not require swallowing because orodispersible tablets dissolve quickly in the mouth, reducing the risk of choking and making medication administration safer and more straightforward. There is no solid dosage form in the pharmaceutical market offering a unit dose of Levothyroxine for pediatric hypothyroidism patients. OBJECTIVE: The objective of this study is to design and develop Orodispersible mini tablets of Levothyroxine Sodium (LT4 ODMTs) for pediatric doses. METHODS: LT4 ODMTs were prepared by direct compression with 10 and 15 µg, respectively, using StarLac® and Disolcel® as excipients. United States Pharmacopeia (USP-43) guidelines evaluated and determined pre-compression properties and quality control parameters. RESULTS: The LT4 ODMTs met the specified limits for quality controls. The Drug Content Uniformity was 97%, Hardness was less than 2.5 N, Friability was less than 0.3%, Disintegration time was less than 25 s, and dissolution profiles (Q 80% > 45 s) followed the USP requirements. Additionally, stability and microbiology assays were realized. CONCLUSION: These formulations are optimal for developing new LT4 ODMTs suitable for treating pediatric hypothyroidism.
RESUMO
A new green on-line method for Boldine determination (BOL) in herbal drugs and phytopharmaceuticals, using its native fluorescence in acid media (λex=282nm; λem=373nm) has been developed. The presented methodology involves for the first time, a flow injection (FI) strategy using a mini-column of multiwalled carbon nanotubes as retention agent coupled with molecular fluorescence. Different parameters influence as sample pH and flow rate, eluent flow rate and composition; on BOL sensitivity and elution time was investigated by multifactorial techniques. Adequate dynamic calibration range (r2=0.9993) was obtained over a concentration interval of 0.029-27.0µgmL-1 BOL. The limits of detection (LOD) and quantification (LOQ) were 0.008 and 0.029µgmL-1, respectively. The average recoveries in explored samples ranged from 95% to 103%. Under optimized conditions, the throughput sample as high as 30h-1 was achieved with high repeatability performance (99%). The proposed development represents a useful and valuable tool emulating the analytical efficiency of the official methodologies for quality control of herbal and phytopharmaceutical drugs containing BOL. Moreover, this approach shows advantages respect to low cost, simplicity and environmental and analyst friendly.
