Will I have GI track issues?

No you will not have GI track Issues.  Because Quic Disc Simply Carbs is made up mostly of simple sugars, with Maltodextrin included in much smaller amounts, the energy is absorbed more readily into the blood stream, and as a result does not sit in the stomach waiting to be processed.  Maltodextrin is a more complex form of Dextrose that needs to be processed by the liver before use.  Substantial amounts of Maltodextrin sit in the stomach and will generally take much longer to be processed before being turned into useable energy, which often results in stomach and GI track issues; including cramping and stomach upset.  While many popular gels are up to 80 percent maltodextrin, Quic Disc Simply Carbs has around 5%.