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Drugs used in medicines for babies are risky: UK expert

The study led by Dr Hitesh Pandya documents the non-drug ingredients present in liquid medicines given to premature infants as part of their medical care.

Written by Agencies | London | Published: January 20, 2009 10:25:23 am

An Indian-origin expert at the University of Leicester has led a major study that shows that infants given liquid medicines are exposed to risk from the chemicals used.

The study led by Dr Hitesh Pandya,senior lecturer in Child Health,documents the non-drug ingredients (excipients) present in liquid medicines given to premature infants as part of their medical care.

The study revealed that the chemicals added to medicines to improve their taste,absorption and to prolong their shelf-life could be potentially harmful to very small babies.

The chemicals generally used are ethanol,sorbitol and Ponceaau 4R (a colouring agent). The study revealed that premature babies are exposed to these potentially harmful excipients in amounts equivalent to over three pints of beer per week.

“This study documents a worldwide problem. It shows that the collection of medicines given to babies may ultimately lead to them being exposed to harmful chemicals with the potential for short and long-term toxic effects.

“Our research highlighted this,and we are planning further studies on the chemicals to understand exactly what these effects might be. What our study hasn’t done is find any direct evidence on the cause and effect of these chemicals and the medical problems that these babies might be being treated for” Dr Pandya said.

Dr Andrew Currie,Consultant at the University Hospitals of Leicester NHS Trust who was also part of the research team,said,”Parents should not panic about these findings. These chemicals can be found in foods all around the world.

“What the study highlighted is that we have a greater understanding of the side-effects of the drugs than we do of the chemicals that many of these drugs are mixed with; there just simply hasn’t been enough research done.

“It is often necessary that these chemicals are added to medications,and in the majority of cases it improves the way the drugs work,but we should be taking more of an interest in them and their effects. It is great news that Dr Pandya and his team will continue their research,” Andrew Currie said.

“Babies and older children are often given medicines that have only received formal testing on adults,which means we estimate amounts that should be given to children and babies,” Pandya said.

“There are numerous reasons for this,such as the practical problems in performing studies in very small babies,worries their parents may have about involving their child in drug trials and drug manufacturer’s reluctance to tackle the problem”

“Our study showed that more work needs to be done to tackle this problem and to improve our understanding,” he added.

The doctor said parents should begin to understand what chemicals are in the medicines being given to their children,but they should not be overly concerned. In many cases there may not be an alternative medicine,and the risk will be balanced in favour of using them in treatment.

He said,”As a research team we do feel it is important that the (medicines regulators) not only ensure that all manufacturers provide detailed labelling of the excipient content of their products but all lead action to determine whether existing practice constitutes a risk,and if so,how this might be dealt with.”

The authors point out that children’s medicines have to cater for a wide age range,making it difficult for manufacturers to tailor their products for each age group. The inclusion of some ingredients is also a necessity.

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