2 things will reliably cause my stomach to bloat and/or slosh.
1. Going too fast for my fitness.
2. Consuming too much protein.
I use Infinit too--I know they really urge athletes to consider taking protein for at least part of an IM race. In my first batch, I had their recommended amount of whey protein for IM distance. Bloat. For the second bag, I removed all whey protein from their recommended blend and have been a very happy camper ever since.
I use 6 scoops in a 24oz water bottle--roughly 900 calories. I carry that on the frame and have a 2nd one in special needs. Aero bottle is repeatedly filled with water from the aid stations, because I need to take in 2 mouthfuls of water for every mouthful of 3x concentrated Infinit--otherwise it will not digest very easily and you run the risk of dehydration. (Were you matching each mouthful of your 2x concentrate with 1 mouthful of water? Could that be the issue?)
1. Going too fast for my fitness.
2. Consuming too much protein.
I use Infinit too--I know they really urge athletes to consider taking protein for at least part of an IM race. In my first batch, I had their recommended amount of whey protein for IM distance. Bloat. For the second bag, I removed all whey protein from their recommended blend and have been a very happy camper ever since.
I use 6 scoops in a 24oz water bottle--roughly 900 calories. I carry that on the frame and have a 2nd one in special needs. Aero bottle is repeatedly filled with water from the aid stations, because I need to take in 2 mouthfuls of water for every mouthful of 3x concentrated Infinit--otherwise it will not digest very easily and you run the risk of dehydration. (Were you matching each mouthful of your 2x concentrate with 1 mouthful of water? Could that be the issue?)