My husband takes carbidopa levodopa and has curling toes. He recently had his first botox shots, one in the bottom of the foot and one in the calf and it has helped a lot. These were given by his neurologist who is a movement disorder specialist and must be repeated every 3 months. He also sees a physical therapist who specializes in Parkinsons who provides temporary relief for all his tight muscles. I hope you can get some relief soon.