Dual-pathway carbohydrate absorption makes a real difference during long efforts, and GU builds the Roctane Energy Gel around that principle. The formula combines maltodextrin and fructose in a ratio that allows your gut to process more fuel per hour than single-source gels, delivering 100 calories through non-competing absorption pathways. That means you can maintain higher calorie intake without the GI distress that comes from overwhelming a single transport mechanism.

Where Roctane separates from GU's original formula is the amino acid and electrolyte content. Each packet contains 1425mg of amino acids, including the branched-chain trio of leucine, valine, and isoleucine that support muscle preservation during extended efforts. Taurine contributes to cardiac output maintenance during prolonged exercise, while beta-alanine promotes carnosine formation to help buffer muscle acidity when you're pushing above threshold. The sodium content runs between 125mg and 180mg depending on flavor, with Lemonade delivering the highest dose for hot-weather training or heavy sweaters.

The box of 24 packets covers roughly six to eight long training sessions or races if you're following the recommended one gel every 30-45 minutes during activity. Multiple flavor options let you stock up on a single favorite or mix across the range. Caffeinated flavors like Blueberry Pomegranate, Cherry Lime, and Sea Salt Chocolate contain 35mg of caffeine from green tea extract, while Cold Brew Coffee doubles that to 70mg for those who want a more aggressive mental boost. Non-caffeinated options include Pineapple, Strawberry Kiwi, and Lemonade.... Read More