Is it safe to use sports drinks and gels in a marathon?

Ducks Rule

New member
I'm preparing for a full marathon and have decided to use gels as after some experimenting I've found that they help me stay energized and provide a bit of a psychological boost. Anyways my question is, is it safe for me to use gels if I am drinking an sports drink (gatorade etc) which I may have to do as it will be very hot on the race day.I've heard that the combination can cause some unpleasant stomache reactions.

Thanks!
 
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