CLIF Bloks Sours Energy Chews - Individual

Specs

Format: Single packet of 6 cubes

Calories per serving (3 cubes): Approximately 80 kcal (Green Apple), approximately 90 kcal (Strawberry Lemonade)

Carbohydrates per serving: 21g

Sodium per serving: 107mg

Potassium per serving: 20mg

Caffeine per serving: Sour Green Apple: 0mg | Sour Strawberry Lemonade: 25mg

Flavors carried by DCL: Sour Green Apple, Sour Strawberry Lemonade with Caffeine

Carbohydrate sources: Tapioca Syrup, Cane Sugar, Maltodextrin

Certifications: Non-GMO, Plant-based

Gluten-free: Yes

Introduced: 2024 — designed specifically to combat flavor fatigue on long efforts

Usage: Half packet 15-30 min before activity. 3-6 cubes every 20-30 min during activity. Always consume with water.

FAQ

Which Sours flavor contains caffeine?: Sour Green Apple is caffeine-free. Sour Strawberry Lemonade contains 25mg of caffeine per serving (3 cubes) via green tea extract.

How do CLIF Bloks Sours compare nutritionally to standard Bloks?: Sours deliver approximately 21g of carbohydrates and 107mg of sodium per serving (3 cubes), at approximately 80 to 90 calories per serving depending on flavor. Standard Bloks deliver approximately 24g of carbohydrates and 50mg of sodium per serving at approximately 100 calories. Sours are slightly lower in calories and carbs but higher in sodium per serving.

Why sour? What is the benefit of a sour flavor?: The sour flavor profile is specifically designed to combat palate fatigue that builds up over long efforts when consuming multiple sweet chews or gels. The sour taste also tends to prompt athletes to drink more water, which is beneficial for hydration and absorption.

How do I use CLIF Bloks Sours during a ride?: Use the same protocol as standard Bloks: half a packet (3 cubes) 15 to 30 minutes before activity, then 3 to 6 cubes every 20 to 30 minutes during activity. Always consume with water.

Best For

Cyclists and endurance athletes doing long efforts of 3 or more hours who experience sweetness overload or flavor fatigue from standard sweet gels and chews. The Sours are also a good choice for athletes who find that a pronounced sour flavor prompts better hydration behavior during a ride. Try the individual packet before buying a box of 18.