Houston Center for Infectious Diseases provides the following vaccines to prevent the Chickenpox (Varicella):

MMRV: Combined Measles, Mumps, Rubella, and Varicella (chickenpox) combination vaccine

Varicella: Varicella (chickenpox) vaccine

Chickenpox vaccine is very effective. Two doses of the vaccine are about 98% effective at preventing chickenpox. Some people who are vaccinated against chickenpox may still get the disease. However, it is usually milder with fewer skin blisters and little or no fever.

Getting chickenpox vaccine is much safer than getting chickenpox disease. Most people who get chickenpox vaccine do not have any problems with it.