The Medicines and Healthcare products Regulatory Agency (MHRA) is strengthening safety warnings to more clearly highlight the risk of botulism caused by medical and cosmetic treatments using botulinum toxin. Botulism is a rare but potentially life-threatening condition that requires immediate hospital treatment.
What is Botulism?
Botulism is caused by the botulinum toxin, which is commonly used in procedures for treating migraines, facial wrinkles, and neurological disorders. The toxin works by relaxing targeted muscles, but in rare cases, it can attack the nervous system, leading to paralysis that can spread across the body and affect the muscles used for breathing if not treated in time.
Symptoms of Botulism
According to the NHS, symptoms of botulism include blurred or double vision, drooping eyelids, difficulty swallowing and speaking, weak muscles (particularly in the face), constipation, and dry mouth. The MHRA update notes: “Patients are advised to seek immediate medical attention if they experience symptoms after treatment, including difficulty swallowing, slurred speech, breathing difficulties, or muscle weakness. These symptoms can occur within days or up to four weeks after treatment.”
Official Statement
Dr Alison Cave, MHRA Chief Safety Officer, said: “Botulinum toxin products are effective for a number of different medical and cosmetic purposes when used correctly. However, these strengthened warnings are an important reminder that, in rare cases, serious side effects can occur. It is vital that healthcare professionals and patients are aware of the symptoms of botulism and act quickly if they arise as this is a medical emergency. We also strongly urge the public to avoid unlicensed products and seek treatment only from appropriately qualified practitioners. The MHRA continuously monitors the safety of these medicines, including side effects and emerging evidence.”
Treatment and Recovery
Botulism is treated in hospital with medications administered through an IV to stop symptoms from worsening and to maintain normal bodily functions until recovery. This may include using a ventilator to assist breathing. If treated quickly, people can recover, but the medication cannot reverse muscle weakness or paralysis that has already occurred. These symptoms may improve over time, but the NHS warns that it can take up to a year for breathing problems to resolve. Long-term issues from botulism can include feeling very tired, getting out of breath easily, difficulty lifting things, and struggling with mental wellbeing.
Risks from Unlicensed Practitioners
The MHRA also warned about the dangers of unlicensed practitioners and counterfeit products, which can significantly increase the risk of serious side effects. The NHS provides guidance on how to check if a clinic and practitioners are registered and lists red flags to avoid when booking cosmetic procedures.
