I think you were very right before wombat. Just like iodine, chlorine dioxide is and oxidant. Therefore, it would not be good to take antioxidants near the time of Miracle-Mineral-Supplement dosage. Apparently, it is only ascorbic acid that stops the action of the CLO2. Maybe it is also due to it being an acid as well as antioxidant.
I take several antioxidants; including and especially selenium. I take them about 6 hours after Miracle-Mineral-Supplement . I take Miracle-Mineral-Supplement twice a day; so it works out that I can take my vitamins and minerals around lunch time.