Could Gastritis And Inconsistent Stools Be Due To Nerium Anti Aging Products?

I don't know if you can, but you may be able to. I have been using Nerium AD anti aging products. Recently, I have noticed I have a lot of abdominal gassiness, stools are inconsistent and I wondered if these products are causing it. I've been on the products for about a month now. Must say my skin looks better but these symptoms are bothersome. I've looked online and tried to find out the straight scoop but only become more confused. Can you help?