The neurotoxins used in Botox are produced by a bacterium called Clostridium botulinum. For medical injections, healthcare professionals use a specific strain known as type A.
Botulinum toxins occur naturally in soil and contaminated food. Ingesting large amounts or having the bacteria enter a wound can lead to botulism—a serious neurological condition that can affect breathing. To ensure safety and effectiveness, Botox is manufactured in a laboratory setting, where the toxins are carefully purified, diluted, and sterilised to eliminate the risk of causing botulism.