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Topiramate is now contraindicated in pregnancy and in women of childbearing potential unless the conditions of a Pregnancy Prevention Programme are fulfilled. This follows a review by the MHRA which concluded that the use of…
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Zoledronic acid is associated with reports of renal impairment and renal failure, especially in patients with pre-existing renal dysfunction or other risk factors. Renal function should be measured before each dose, and pati…
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If Fournier’s gangrene is suspected, stop the SGLT2 inhibitor and start treatment urgently (including antibiotics and surgical debridement). Fournier’s gangrene is a rare but potentially life-threatening infection that requi…
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Liver function tests should be carried out at treatment initiation, during treatment, and also when the dose is increased.
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Letters were sent about ranibizumab and Emerade adrenaline auto-injectors. Alerts were issued about ranitidine, paracetamol, omeprazole, mitomycin-C Kyowa, folic acid, and Emerade adrenaline auto-injectors.
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Clinical trials have reported an increased risk of renal dysfunction and mortality in critically ill or septic patients who received hydroxyethyl starch (HES) compared with crystalloids.
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Liver function should be tested before and during treatment with temozolomide.
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A summary of recent letters and notifications sent to healthcare professionals about medicines and medical devices.
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Remember to report any suspected adverse reactions
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Safety studies of Spiriva Respimat▼
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Letters were sent about Oncaspar▼ (pegaspargase), Ketalar (ketamine) injection, and Elmiron (pentosan polysulfate sodium). A recall was issued for several medicines taken out of the regulated medicines supply chain, includin…
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A summary of letters and drug alerts recently sent to healthcare professionals.
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Dental examination and appropriate preventive dentistry should be considered before treatment, especially for patients also treated with an intravenous bisphosphonate.
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A summary of letters and recent medicine recalls and notifications sent to healthcare professionals.
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Check full blood counts before prescribing dimethyl fumarate and then every 6 to 12 months. Stop treatment immediately if you suspect progressive multifocal leukoencephalopathy.
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A summary of recent letters and notifications sent to healthcare professionals about medicines.
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Insufficient evidence to confirm a link between oral bisphosphonate use and an increased risk of oesophageal cancer.
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A summary of recent letters and notifications sent to healthcare professionals about medicines and medical devices, and a recent National Patient Safety Alert asking organisations to put a plan in place to implement new regu…
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Use materials online now and hardcopies arriving over the coming weeks by post to ensure women and girls of childbearing potential on valproate medicines meet the requirements of the Pregnancy Prevention Programme.
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A summary of letters and drug alerts recently sent to healthcare professionals.
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A summary of recent letters and notifications sent to healthcare professionals about medicines and medical devices.
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Recent epidemiological evidence suggests a possible small increased risk of congenital cardiac defects in association with fluoxetine in early pregnancy, similar to that seen with paroxetine. There are insufficient data to d…
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A summary of recent letters and notifications sent to healthcare professionals about medicines.
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A summary of recent letters and notifications sent to healthcare professionals about medicines.
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There have been reports of necrotising and haemorrhagic pancreatitis in people taking exenatide some of which were fatal - stop exenatide treatment if pancreatitis is diagnosed.
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Discontinue baricitinib treatment permanently if clinical features of deep vein thrombosis or pulmonary embolism occur. Prescribers are reminded to use caution if using baricitinib in patients with risk factors for deep vein…
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A summary of recent letters and notifications sent to healthcare professionals about medicines.
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There have been rare reports of Nexplanon implants having reached the lung via the pulmonary artery. An implant that cannot be palpated at its insertion site in the arm should be located as soon as possible and removed at th…
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…- the risk of blood clots with all low-dose CHCs is small
- there is good evidence that the risk of venous thromboembolism (VTE) may vary between products, depending on the progestogen
- CHCs that contain levonorgestrel, norethisterone, or norgestimate have the lowest risk of…
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A summary of recent letters and notifications sent to healthcare professionals about medicines and medical devices.
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Repeat enhanced cardiovascular monitoring when restarting fingolimod after treatment interruption,
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Temporary safety measures are in place while an EU review investigates the link between cases of serious liver injury, including 4 cases requiring liver transplantation, and Esmya for uterine fibroids.
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Healthcare professionals working in primary and secondary care should ensure that clinically significant immunosuppression in a patient is identified before administration of a live attenuated vaccine.
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A signal of increased lower limb amputation (primarily of the toe) in people taking canagliflozin compared with placebo in a clinical trial in high cardiovascular risk patients is currently under investigation.
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Take the risk of cardiovascular side effects into account when prescribing tiotropium delivered via Respimat or Handihaler to patients with certain cardiac conditions, who were excluded from clinical trials of tiotropium (in…
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Healthcare professionals prescribing aripiprazole are reminded to be alert to the risk of addictive gambling and other impulse control disorders. Healthcare professionals should advise patients, their families and friends to…
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Provide clear information to patients and caregivers about how to minimise the risk of accidental exposure and the importance of appropriate disposal of patches. We continue to receive reports of unintentional opioid toxicit…
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Patient reminder cards about the risk of osteonecrosis of the jaw are being introduced; denosumab 120 mg is now contraindicated in patients with unhealed lesions from dental or oral surgery.
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Maternal administration of magnesium sulfate for longer than 5–7 days in pregnancy has been associated with skeletal adverse effects and hypocalcaemia and hypermagnesemia in neonates. If use of magnesium sulfate in pregnancy…
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Cases of pigmentary maculopathy leading to visual impairment have been reported with pentosan polysulfate, particularly after long-term use at high doses. Ensure patients taking pentosan polysulfate have regular ophthalmic e…
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Pregabalin has been associated with infrequent reports of severe respiratory depression, including some cases without the presence of concomitant opioid medicines. Patients with compromised respiratory function, respiratory …
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Letters were sent on Typhim Vi vaccines, Mepact (mifamurtide), and Xeljanz (tofacitinib) and an alert issued to recall Emerade 150 microgram adrenaline pens.
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In 2008 MHRA commissioned Ipsos MORI to research the public’s perception of herbal medicines, the findings may help doctors and pharmacists when considering how to advise patients.
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A summary of recent letters and notifications sent to healthcare professionals about medicines
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Cases of progressive multifocal leukoencephalopathy have been reported in patients taking dimethyl fumarate for multiple sclerosis, who all had prolonged lymphopenia.
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Key MHRA advice and guidance issued so far on medicines safety and pharmacovigilance, including on reporting to the Yellow Card Scheme.
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Contact patients currently taking Esmya for uterine fibroids as soon as possible and advise them to stop their treatment. The licence for Esmya has been suspended to protect public health while a safety review is conducted f…
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The eighth annual #MedSafetyWeek social media campaign will take place from 6 to 12 November 2023. It will focus on the importance of reporting suspected adverse reactions to medicines and suspected problems with medical dev…
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A falsified version of Mounjaro (tirzepatide) KwikPen 15mg solution for injection has been found supplied through one online pharmacy in the UK. The falsified product is labelled with batch D873576 and applies to Mounjaro Kw…
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The annual #MedSafetyWeek campaign takes place from 3 to 9 November 2025. This year’s campaign theme is ‘we can all help make medicines safer.’