FACIAL PAIN: A 21st CENTURY GUIDE For People with Trigeminal Neuralgia Neuropathic Pain 2.3 Botox by Ramesh P. Babu, MD Botulinum toxin is one of the most poisonous biologic substances known to humans. What makes botulinum toxin type A (Botox) safe for use? Even though botulinum toxin is known for its toxicity, administered by well-trained…