There is no cure for tetanus. Treatment of tetanus involves wound care, medications to ease symptoms and supportive care.
Spores of clostridium tetani are deposited in a contaminated wound. These spores multiply rapidly and produce a neurotoxin that interferes with nerves that control muscle movement. Cleaning of wound is essential as it removes and prevents growth of tetanus spores. Cleaning of wound includes removing dirt, foreign objects and dead tissue from the wound.
Getting tetanus doesn't provide immunity to the bacteria afterward. Vaccination with tetanus vaccine is needed to prevent future tetanus infection.