NSAID medications taken before marathon running can cause serious harm. In my opinion no marathon should be partnered with NSAIDS of any type, even gels. The fact that @LondonMarathonis sponsored by voltarol, I believe, is a risk to runner welfare. Although the gels are safer than tablets, they have potential risks. The association though can lead runners to a misunderstanding and take NSAID tablets thinking they are safe, especially as most runners don't understand the risks. My article in the @DailyMailUK explains my thoughts and is based on being the medical director of the @BrightonMarathn since 2012. Runner welfare should always be the absolute priority above everything else. For that reason, I believe that @LondonMarathon should stop their partnership with voltraol with immediate effect. Retweet/like if you agree or please give your thoughts below.