<prompt> All are true about Botulinum toxin except?DiplopiaDysahriaIncrease DTRConstipation  <response>: Botulinum toxin - action on parasympathetic nervous system Clinical feature 1. Diplopia 2. Dysphagia 3. Dysahria 4. DTR Deep tendon reflexes 5. Only food poisoning where constipation occur because of action ACH 