There is no additional benefit of wearing the patch longer than 8 hours
Cai J, Yang J, Chen X, Zhang H, Zhu Y, Liu Q, et al
via the activation of Nrf2 pathway and Sirtuin-3-FoxO3a pathway in AKI and CKD models (Xu et al., 2012
The nationwide fortification of grains with folic acid was estimated to prevent 1,000 cases of neural tube defects in the years after it was implemented, but a CDC study showed that there were still about 3,000 babies born with neural tube defects each year, even with the mandated fortification.[ref] ufficient choline, vitamin B12, vitamin B6, riboflavin, thiamine, zinc, and methionine (protein) also plays a role in reducing the risk of neural tube defects
But its certainly not the only antioxidant that can ward off unwanted sickness