Among channel swimmers, the Danish sports drink Maxim is something of a magical elixir. The reasons for this are beyond the scope of this post, but for additional details I recommend a search of the Channel Swimmers chat archives – especially posts by CS&PF pilot Michael Oram.
Maxim is an excellent product. Indeed, it fueled three of my four ultra-marathon events this year (Tampa, MIMS, and Catalina). What’s interesting about Maxim is how simple it is. The ingredients: 97% maltodextrin, with a smattering of Vitamins C and B1. Maltodextrin is a complex carbohydrate of chained glucose polymers, and is the basis for other popular endurance fuels including Perpetuem, HEED, and EFS. Maxim, however, has no added protein (Perpetuem), no added amino acids (EFS), and no added electrolytes (all three).
As you know if you read my DIY recovery drink post, much cheaper than Maxim. So why pay $28 + $8 S/H to ship Maxim from the UK? (There is no currently no American importer of Maxim products.) Is Maxim maltodextrin superior to bulk maltodextrin? Do the added vitamins make a meaningful difference?
Maybe… maybe not. I’m no chemist. For what it’s worth, Maxim does seem to dissolve more readily in water than the bulk stuff. I don’t know why that is, or what it means. Possibly something to do with which grains were used to synthesize it.
In any case… getting to the point of this post. Remember the Ederle Swim earlier this month? Long story, but suffice to say: The night before the swim I discovered that I didn’t have enough Maxim to mix my feeds. Oh, f*ck. Where am I going to find Maxim at 7pm in New York City?
I didn’t find Maxim… but I did find a great little shop in midtown, Swim Bike Run. They carried a product, Carbo Pro, that appeared to be pretty similar to Maxim. Pure maltodextrin, and none of the other crap. To my delight, the Carbo Pro dissolved almost instantly into water - just like Maxim.
Even more to my delight, Carbo Pro worked great the next day, during my 17.5-mile swim - just like Maxim. As far as I’m concerned, the two products are interchangeable. The only difference being, Carbo Pro is easier to obtain in the US.
Price comparison (and this surprised me):