This is the first time I’ve ever used the gel and it was for 2025 LDN Marathon. I used 4 160 gels at 5,10,15,19, and the caffeine at 22.
I did not experience any stomach issues with the gels and I can honestly say that fuelling with the gels gave me the energy necessary to get me to the end in a relatively comfortable tress free run. Highly recommended Maurten.