http://www.bbc.co.uk/news/health-24679276 Recall of some insulin pens ordered The medicines watchdog, the MHRA, is urging people with diabetes to check their insulin pens. It says a manufacturing fault has led to some batches of pens or cartridges containing the wrong amount of insulin. The products affected are the NovoMix 30 Flexpen 100U/ml pre-filled pen and the Novomix 30 Penfill 100U/ml cartridge. Last year there were just over a million prescriptions for these products dispensed in England. They are used mainly by children with type 1 diabetes, though some people with type 2 diabetes also use the pens. The MHRA warning has also been circulated by the Department of Health in Northern Ireland. Insulin is used to regulate blood-glucose levels. The Medicines and Healthcare products Regulatory Agency says patients with pens affected by the recall should consult their GP or nurse to arrange for a new supply as soon as possible. In the meantime patients should not stop their treatment, it said. The Agency has issued a list of batch numbers printed on the pen or cartridge. It says only a small fraction of the cartridges sold are likely to have been affected. The batch numbers are: CS6D422, CS6C626, CS6C421, CP50912, CP50750, CP50639, CP51706, CP50940, CP50928, CP50903, CP50914, CP50640, CP51095, CP50904, CP50650, CP51098, CP50915, CP50412, CFG0003, CFG0002, CFG0001, CP50902, CP50749, CP50393, CP50950, CP51025, CP50751, CP50375, CP50420, CP51097, CP50641, CP51096 and CP50392.