Amid reports of rare botulism cases in the UK, the country's Medicines and Healthcare products Regulatory Agency (MHRA) has issued a safety warning for all botulinum toxin type A products, including Botox and other cosmetic injectables.The regulator said cases of iatrogenic botulism—botulism caused by medical treatment—have been reported following both therapeutic and cosmetic use of botulinum toxin products when the toxin spreads beyond the intended injection site."Patients should seek immediate medical advice if they experience signs and symptoms," the MHRA said.Why Are Botulinum toxin At Risk?Botulinum toxin medicines are widely used for cosmetic procedures, such as reducing facial wrinkles, as well as for treating conditions including muscle spasms, excessive sweating (hyperhidrosis), and an overactive bladder.While these medicines are considered safe when used correctly, the MHRA warned that, in very rare cases, the toxin can spread beyond the injection site and cause botulism—a serious and potentially life-threatening condition.To improve awareness, the regulator has worked with manufacturers to update product information and patient leaflets to more clearly highlight the risk of iatrogenic botulism.Also read: GLP-1 Weight-Loss Drugs Show Promise for 17 Million With Binge Eating Disorder, Suggests StudySymptoms Can Appear Up to Four Weeks LaterThe MHRA warned that symptoms may not appear immediately after treatment. They can develop within days or even up to four weeks after receiving a botulinum toxin injection.Patients are advised to seek immediate medical attention if they experience:Difficulty swallowingSlurred speech or difficulty talkingDifficulty breathing or shortness of breathMuscle weaknessSevere cases may require intensive care and mechanical ventilation.Who Is at Higher Risk? According to the MHRA, the risk of serious side effects may be higher in:People with underlying neurological disordersThose with a history of difficulty swallowing (dysphagia)Those with a history of aspiration (inhaling food or fluids into the lungs)Patients receiving high doses of botulinum toxinProcedures performed outside licensed indications or at unapproved injection sitesUse of counterfeit or unlicensed botulinum toxin productsHealth officials say early recognition of symptoms is critical, as prompt treatment can help prevent serious complications."While botulism is a rare infection, it can be serious. There are effective treatments available, and we recommend seeking immediate medical advice if you have had a recent treatment and are experiencing symptoms such as difficulty swallowing," said Dr. Martin Bewley, Consultant in Health Protection at the UK Health Security Agency (UKHSA).Dr. Alison Cave, Chief Safety Officer at the MHRA, recommended that healthcare professionals and patients be aware of the symptoms of botulism and act quickly if they arise. Importantly, the expert "strongly urged the public to avoid unlicensed products and seek treatment only from appropriately qualified practitioners."What Is Botulism?Botulism is a rare but serious illness caused by a toxin produced by the bacterium Clostridium botulinum. The toxin attacks the nervous system and can lead to paralysis, breathing difficulties, and, in severe cases, death if not treated promptly.Because it can rapidly affect the muscles involved in breathing, botulism is considered a medical emergency.