Carbs Fuel Caffeinated Original 50 g Energy Gel

50 g carbs per 1 packet (76 g) · 2:1 glucose:fructose · 100 mg caffeine. Graded for five standard jobs below — the same product fits some jobs and not others.

dual-source100 mg caffeine
Check it for your own job →

Job fit

Caffeinated Original 50 g Energy Gel works when the job is Marathon, 70.3, IRONMAN, Century / gran fondo, Ultra.

Marathon
3.5 h · race · target 80 g/h → 1.6/h
A
✓ dual-source 2:1 · absorbs at 80 g/h✓ gut-friendly✓ 1.6/h · easy to carry✗ 100 mg each · 560 mg over 3.5 h, above 6 mg/kgℹ 32 % of your sodium · add saltℹ ~250 ml water per gel
70.3
5.5 h · race · target 90 g/h → 1.8/h
A
✓ dual-source 2:1 · absorbs at 90 g/h✓ gut-friendly✓ 1.8/h · easy to carry✗ 100 mg each · 990 mg over 5.5 h, above 6 mg/kgℹ 36 % of your sodium · add saltℹ ~250 ml water per gel
IRONMAN
12 h · race · target 90 g/h → 1.8/h
A
✓ dual-source 2:1 · absorbs at 90 g/h✓ gut-friendly✓ 1.8/h · easy to carry✗ 100 mg each · 2160 mg over 12 h, above 6 mg/kgℹ 36 % of your sodium · add saltℹ ~250 ml water per gel
Century / gran fondo
5 h · steady · target 80 g/h → 1.6/h
A
✓ dual-source 2:1 · absorbs at 80 g/h✓ gut-friendly✓ 1.6/h · easy to carry✗ 100 mg each · 800 mg over 5 h, above 6 mg/kgℹ 32 % of your sodium · add saltℹ ~250 ml water per gel
Ultra
10 h · steady · target 80 g/h → 1.6/h
A
✓ dual-source 2:1 · absorbs at 80 g/h✓ gut-friendly✓ 1.6/h · easy to carry✗ 100 mg each · 1600 mg over 10 h, above 6 mg/kgℹ 32 % of your sodium · add saltℹ ~250 ml water per gel

Grades: A–E from absorption (35 %), gut (30 %), practicality (15 %), caffeine (10 %) and your preferences (10 %); a ✗ on absorption or gut caps at C. Sodium and tonicity are shown as ℹ and never change the grade.

What is in it

Label facts, not a score. Apply your own preferences in the checker.

Format
Gel
Unit
1 packet (76 g)
Carbohydrate
50 g
Carb sources (label order)
maltodextrin, sucrose, fructose
Glucose:fructose
2:1 glucose:fructose · ~33 % fructose (declared)
Sodium
150 mg
Potassium
not stated
Caffeine
100 mg
Protein / fat / fibre
not stated / not stated / not stated
Sugar alcohols
none listed
Sweeteners
none listed
Allergens
not stated
Vegan / gluten-free
not stated / not stated
Batch-tested
not stated
Tonicity
hypertonic

200 kcal, 100 mg caffeine, 150 mg sodium. Same seven-ingredient base plus caffeine.

From the manufacturer's page, checked 2026-09-18 · source. Labels change; read the pack. Not medical advice; not affiliated with the brand.

How many Carbs Fuel Caffeinated Original 50 g Energy Gel per hour do I need?

At 50 g carbs per 1 packet (76 g): about 1.2 per hour for 60 g/h and 1.8 per hour for 90 g/h. Use the fuel checker to set your own job.

Is Carbs Fuel Caffeinated Original 50 g Energy Gel dual-source (glucose and fructose)?

Yes — 2:1 glucose:fructose (declared), about 33 % fructose, which is in the range that absorbs at 90 g/h and beyond.

Does Carbs Fuel Caffeinated Original 50 g Energy Gel contain caffeine?

Yes, 100 mg per 1 packet (76 g). Keep the day's total inside 3–6 mg per kg of body mass and under about 400 mg.

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