Do protein mass gainers cause acidity or gastro problems? although taken in small quantities (3 times a week).. thank you.

They can: It is possible that they can cause reflux and GI symptoms. It depends on the supplement and on your body. But it is very possible that they could be causing some bloating or gassy distention. However, often times it may improve after using it for a couple to few weeks. The reflux symptoms however, you may need to change the mixture of what you are using, but if continues should be seen by md.