Is there any side effect for oatmeal?

No: oatmeal is a great food for healtH

Used for what: Are you using it for a skin paste? Or are you consuming it?

Not usually: Oatmeal is very healthy. It has a lot of fiber so if you have been eating a very low fiber diet then adding oatmeal can cause a lot of oatmeal it can cause some bloating and gas, but this should resolve as soon as your body becomes adjusted to it. Add some fruit and it makes a great breakfast. Enjoy

Sure R Side effects: I find that one of the most troublesome and consistent side effects following a bowl of good piping hot, steaming, delicious oatmeal together with dried fruit toppings, blueberries, and UNprocessed (but pasteurized) honey, using non fat steamed milk is that I want at least 1 more bowl...and if there's time....I want another one....especially now the weather is getting a little cooler.