Currently there are no oral medications approved for treating non segmental vitiligo. This study is to test the safety and effectiveness of a once daily oral treatment for non segmental vitiligo.

Depending on your study group, you may receive either the study medicine or a placebo. A placebo does not have any medicine in it, but it looks just like the medication being studied. In this trial, there is a greater chance of receiving the study medicine than the placebo.

While the study medicine is still being researched in people with vitiligo, it has been approved in the US for use in people with alopecia areata, a condition affecting the immune system resulting in hair loss.

Participant safety is the top priority of this clinical trial. Before you participate, you will be given all the details about the trial, including potential benefits and risks of taking part. Your health will also be monitored by the trial team while in the trial.

Participants will be reimbursed for any reasonable expenses that they may have as a result of taking part in this trial. This may include parking, meals or other travel related expenses.