Vitamin B6 deficiencies can also commonly happen as a result of isoniazid treatment for tuberculosis, as isoniazid attaches and inactivates vitamin B6.
And the results of this study showed that the new regimen - the three months of isoniazid and rifapentine - was as effective as the nine-month isoniazid regimen.
Those at highest risk can take medicine, but Vanderbilt University researcher Timothy Stirling says not everyone follows through with the treatment, which is a daily dose of isoniazid for nine months.