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Dave Elder (David P Elder Consultancy)
While determining active intakes and control strategies for short chain alkyl N-nitrosamines was relatively easy to establish, nitrosamine drug substance-related impurities continue to present challenges. Here, Dave Elder reflects on the three main instances of nitrosamine contamination in drug products.
Dave Elder looks at the guidelines drug manufacturers should follow to reduce nitrosamine impurities, following several recent withdrawals.
The valsartan nitrosamine contamination issue was probably the most significant quality issue to hit the pharmaceutical industry in a decade. Here, Dave Elder outlines how agencies and manufacturers are dealing with the problem and indicates the knowledge gaps that might be concealing future complications.
Here, Dave Elder discusses the determination of less than lifetime (LTL) limits for highly potent N-nitrosamine compounds and how to ensure safety in dosing.
There are significant interpretational differences between the European Medicines Agency (EMA) and US Food and Drug Administration (FDA)’s guidance on active pharmaceutical ingredient (API) starting materials. In this article, Dave Elder explores the ambiguity in guidance from both agencies and addresses why industry struggles to identify and justify starting materials…
The impact of COVID-19 is wide-reaching with disruptions to supply chains likely to continue over the coming years. In this article, Dave Elder discusses the effect of the pandemic on the supply and demand of critical medicines and what this means for pharma supply chains.
References for 'Availability of critical medicines during pandemics' and 'Approval of regulatory starting materials', in European Pharmaceutical Review Issue 5 2020.
Although steps have been taken to enable the implementation of continuous manufacturing in industry, a lack of global harmonisation in regulations has slowed the adoption of this promising emerging technology. Dave Elder discusses how ICH Q13 seeks to provide a harmonised approach to support this important initiative.
Repurposing existing drugs can be attractive as the process is often less risky, more cost effective and can be undertaken in less time. This article discusses the logic behind drug repurposing and the approaches that are currently being explored.