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Have signed up for my first ever marathon in April, have done a few half's ranging from 1:49 to 1:58.
Is there are benefit to be had from taking creatine or will it just make me slower?
Thanks in advance.
caffeine is decent.
Creatine is generally considered to be a waste of time (but I'm sure you'll find some recommendations for it somewhere), but don't worry, running marathons opens up an entire new world of supplements that you've probably never heard of before to obsess over.
Including, but not limited to:
Beetroot (juice, concentrate, natural or powdered)
BCAA (Branch Chain Amino Acids)
Conjugated Lineloic Acid
About a million different types & sources of carbs
Feel free to experiment, but it can be a long and expensive road and can turn obsessive as you look for a better type of protein etc.
Personally I found beetroot, BCAA and caffeine to possibly offer some benefits (and of course carbs).