Final answer:
Opioids and tranquilizers are drugs used for the treatment of spasms. Opioids prevent spasms by relieving pain, while tranquilizers help reduce spasms by relieving anxiety and tension.
Step-by-step explanation:
The drugs used for the treatment of spasms include opioids and tranquilizers. Opioids such as morphine and codeine are used to prevent muscle spasms by relieving pain. Tranquilizers like diazepam and chlordiazepoxide are also used to relieve the symptoms of anxiety and tension, which can help reduce muscle spasms.