The substandard formulations made from those ingredients often end up in pharmacies in developing countries and for sale on the Internet, where more Americans are turning for cheap medicine.
The strip can be considered as suitable for on-the-spot analysis of test sample formulations either by farmers, extension workers, quality control officials etc., to generate preliminary prima facie evidence in case of doubtful samples of substandard insecticide formulation.
This article reviews the different aspects of substandard drug formulation that can occur (for example, pharmacological variability between drug batches or between generic and originator drugs, incorrect drug quantity and presence of impurities).
When samples of substandard insecticide formulations are diluted as per the pre-determined dilutions, the aliquots are expected to contain less than the quantity specified above, and would result in the appearance of two purple lines, with one of them at the sample line region of the membrane, the intensity of which would be inversely proportionate to the concentration of the test analyte.
Substandard antimalarial formulations were widely available in Tanzania at the time of this study.
It is extremely unlikely that if either a substandard or falsified formulation of paracetamol entered into the market in a high income country, that doctors would have specified the formulation in a history taken in a child presenting with acute liver failure.
Substandard medicines (a formulation with too little or too much API) are a concern in countries with low standards of quality control of the manufacturing process (non-good manufacturing accredited status).
At their worst, uncertified chemical companies contribute to China's notoriety as the world's biggest supplier of counterfeit drugs, which include unauthorized copies as well as substandard, even harmful, formulations.
A blinded study methodology was used to assess pure CQ or DOX that was combined with different amounts of fillers (Table 1 and Figure 4) to correspond to full strength (100%) and substandard (70% and 40%) formulations.
The most frequent type of formulation reported to be substandard were tablets.
