Generics Substitution, Bioequivalence Standards, and International Oversight: Complex Issues Facing the FDA.

The regulations for assessing the quality of generic drugs and their bioequivalence to innovator products are outdated and need to be substantially modernized. There are multiple reasons why these changes are needed, including: (i) the regulations remain largely unchanged since the passage of the Hatch-Waxman Act in 1984; (ii) medication therapies have become substantially more complex over the three decades since the passage of the Act; (iii) a switch from an innovator drug to a generic drug, or switching from one generic to another, is not a benign process - there is substantial clinical professional judgment involved and in some instances these decisions should be better informed; and (iv) pharmaceutical ingredients for finished products, whether innovator or generic, are from multiple sources of supply, adding variability in their production, and which may not be accounted for in specification tolerances. When these elements are viewed together, they clearly suggest that more transparency of responsible manufacturers in product labels and updated standards for bioequivalence are required.

Combatting substandard and falsified medicines: a view from Rwanda.

Agnes Binagwaho and colleagues describe Rwanda's experience of pharmacovigilance for malaria and tuberculosis, and call for a global treaty and leadership by the World Health Organization to address the global manufacture and trade in substandard and falsified medicines.

The role of pre-shipment batch testing in ensuring good medicine quality.

Background: Most donor agencies only procure drugs approved by a Stringent Regulatory Authority or the World Health Organization (WHO) Prequalification Programme in an effort to ensure high quality. However, the US President's Malaria Initiative has occasionally had to return approved drugs with quality issues to the manufacturer. This study compares the quality of artemisinin-based combination therapies (ACTs) produced by WHO-approved manufacturers with non-approved manufacturers and suggests policy changes to improve quality of donor-procured drugs.

Subsidizing artemisinin-based combination therapies: a preliminary investigation of the Affordable Medicines Facility - malaria.

Background: The Affordable Medicines Facility - malaria (AMFm) is a subsidy mechanism to lower the price of, and hence increase access to, the best antimalarial medicines, artemisinin-based combination therapies (ACTs). While the AMFm stipulates that only quality-approved products are eligible for subsidy, it is not known whether those products, when actually supplied, are of good quality and comport with established pharmacopeial guidance on formulation and content of active ingredients. This study aimed to assess price and quality of AMFm ACTs, to compare AMFm ACTs with non-AMFm ACTs and artemisinin monotherapies, and to assess whether AMFm ACTs have been pilfered and diverted to a nearby country.

Anti-infective medicine quality: analysis of basic product quality by approval status and country of manufacture.

Background: Some medicines for sale in developing countries are approved by a stringent regulatory authority (SRA) or the World Health Organization (WHO) prequalification program; many of these are global brands. This study ascertains whether medicines approved by SRAs or the WHO perform better in simple quality tests than those that have not been approved by either.

Methods: Over the past 4 years, 2652 essential drugs (products to treat malaria, tuberculosis, and bacterial infections) were procured by covert shoppers from eleven African cities and eight cities in a variety of mid-income nations.

The AMFm and Medicine Diversion: Good intent enabling corrupt practices.

Increased donated and subsidised medicines for malaria are saving countless lives in Africa, but there is probably increasing theft and diversion of those medicines. The impact of medicine diversion is unknown but potentially dangerous and may bolster criminal networks and increase medicine stock outs (1,2). This study demonstrates that diversion is widespread; diverted subsidised medicines were found in 11 of 14 cities investigated, and in four of those, over half the pharmacies researchers visited had diverted subsidised malaria products.

The primacy of public health considerations in defining poor quality medicines.

Paul Newton and colleagues argue that public health, and not intellectual property or trade issues, should be the prime consideration in defining and combating counterfeit medicines, and that the World Health Organization (WHO) should take a more prominent role.

Does price reveal poor-quality drugs? Evidence from 17 countries.

Focusing on 8 drug types on the WHO-approved medicine list, we constructed an original dataset of 899 drug samples from 17 low- and median-income countries and tested them for visual appearance, disintegration, and analyzed their ingredients by chromatography and spectrometry. Fifteen percent of the samples fail at least one test and can be considered substandard. After controlling for local factors, we find that failing drugs are priced 13.

Assessing website pharmacy drug quality: safer than you think?

Background: Internet-sourced drugs are often considered suspect. The World Health Organization reports that drugs from websites that conceal their physical address are counterfeit in over 50 percent of cases; the U.S.

Anti-malarial drug quality in Lagos and Accra - a comparison of various quality assessments.

Background: Two major cities in West Africa, Accra, the capital of Ghana, and Lagos, the largest city of Nigeria, have significant problems with substandard pharmaceuticals. Both have actively combated the problem in recent years, particularly by screening products on the market using the Global Pharma Health Fund e.V.

Drug procurement, the Global Fund and misguided competition policies.

In an effort to increase competition and decrease price, the Global Fund to Fight AIDS, Tuberculosis and Malaria recently began asking some grant recipients to use international competitive bidding processes for certain drug purchases. Unfortunately, for countries like Kenya, this request has caused more harm than good. After awarding the tender for its annual supply of the anti-malarial artemether-lumefantrine to the lowest bidder, Ajanta Pharma, Kenya experienced wide stock-outs in part due to the company's inability to supply the order in full and on time.

Pilot study of essential drug quality in two major cities in India.

Background: India is an increasingly influential player in the global pharmaceutical market. Key parts of the drug regulatory system are controlled by the states, each of which applies its own standards for enforcement, not always consistent with others. A pilot study was conducted in two major cities in India, Delhi and Chennai, to explore the question/hypothesis/extent of substandard and counterfeit drugs available in the market and to discuss how the Indian state and federal governments could improve drug regulation and more importantly regulatory enforcement to combat these drugs.

Physical and chemical stability of expired fixed dose combination artemether-lumefantrine in uncontrolled tropical conditions.

Background: New artemisinin combination therapies pose difficulties of implementation in developing and tropical settings because they have a short shelf-life (two years) relative to the medicines they replace. This limits the reliability and cost of treatment, and the acceptability of this treatment to health care workers. A multi-pronged investigation was made into the chemical and physical stability of fixed dose combination artemether-lumefantrine (FDC-ALU) stored under heterogeneous, uncontrolled African conditions, to probe if a shelf-life extension might be possible.

Antimalarial drug quality in the most severely malarious parts of Africa - a six country study.

A range of antimalarial drugs were procured from private pharmacies in urban and peri-urban areas in the major cities of six African countries, situated in the part of that continent and the world that is most highly endemic for malaria. Semi-quantitative thin-layer chromatography (TLC) and dissolution testing were used to measure active pharmaceutical ingredient content against internationally acceptable standards. 35% of all samples tested failed either or both tests, and were substandard.

Bad medicine in the market.

Counterfeit medicines are an insidious threat to global health, and the risks they pose have been largely underestimated to date. Apart from failing to cure disease, they can cause mental and physical damage - and even death. Fake drugs containing insufficient active ingredients breed resistance, which can make standard drugs useless.