This article points to a supplement that may prevent chemo brain. Several things-

1) This study points to n-acetyl cysteine as a preventative before chemotherapy- not to heal chemo brain after chemo therapy (though i supplement with it in hopes of regaining my full brain function )

2)A researcher is quoted in the article saying that chemo brain is experienced for up to two years- I have experienced this side effect for at least 10 years-yes, my chemo brain improved but I still suffer deficits-

"In the past, there was a lot of ignorance among doctors about
chemo-induced cognitive problems,” Dr. Abraham said. “In some patients,
problems can persist for up to two years.”

"Cancer patients have complained for years about the mental fog known as
chemobrain. Now in animal studies at West Virginia University,
researchers have discovered that injections of N-acetyl cysteine (NAC),
an antioxidant, can prevent the memory loss that breast cancer
chemotherapy drugs sometimes induce."

http://www.newswise.com/a...