DIY Energy Gel vs Commercial Gels
A homemade dual-transport energy gel matches Maurten, GU, SiS, and PF&H on the biochemical metrics that drive race-day performance (carbohydrate ratio, gastric emptying speed via hydrogel matrix, dual-transport absorption) at roughly $0.06 to $0.08 per 25g carbs versus $0.55 to $0.95 for commercial sachets. The tradeoff is 25 minutes of kitchen prep per batch and a 2 to 3 week refrigerated shelf life.
This page compares Beetroot Pro's free DIY Energy Gel calculator output against five common commercial sachets. The DIY hydrogel uses the same alginate-pectin matrix (Sutehall et al. 2020, MSSE 52:2) and the same dual-transport ratio (Jeukendrup 2014, Sports Medicine) that the commercial products are built on. Prices reflect typical online bulk-pack pricing as of 2026.
| Feature | DIY Fluid | DIY Hydrogel | Maurten 100 | GU Energy | SiS Isotonic | PF&H Gel |
|---|---|---|---|---|---|---|
Cost per 25g carbs DIY math: bulk maltodextrin + fructose (+ sodium alginate + pectin for hydrogel). | ~$0.06 | ~$0.08 | ~$0.95 | ~$0.60 | ~$0.55 | ~$0.65 |
Carbs per serving | You choose (30-120g) | You choose (30-120g) | 25g | 22g | 22g | 30g |
Carb ratio | 1.25:1 malto:fructose | 1.25:1 malto:fructose | Proprietary | ~2:1 | ~1:1 | ~1:0.8 |
Dual-transport (SGLT1 + GLUT5) | ||||||
Hydrogel matrix (alginate + pectin) | ||||||
Safe without simultaneous water | ||||||
Caffeine option | You choose (0-200mg) | You choose (0-200mg) | no (separate Caf 100) | yes (40 or 100mg variants) | yes (75mg variant) | yes (100mg variant) |
Sodium per serving | You choose | You choose | 38mg | 60mg | 20mg | 250mg |
Prep time per batch | ~20 min | ~25 min | 0 min | 0 min | 0 min | 0 min |
Refrigerated shelf life | 2-3 weeks | 2-3 weeks | 12+ months | 12+ months | 12+ months | 12+ months |
Soft-flask refillable | no (sachet) | no (sachet) | no (sachet) | no (sachet) | ||
Plastic waste per serving | zero | zero | 1 sachet | 1 sachet | 1 sachet | 1 sachet |
Independent flavor + caffeine + sodium control | ||||||
Subscription-only pricing Commercial brands push subscriptions for bulk discount. DIY bulk powder has no commitment. | optional | optional | optional | optional | ||
Vegan / vegetarian friendly | ||||||
Ingredients NOT on prohibited substance lists Active carbohydrate and hydrocolloid ingredients used by all six options are not on the WADA, NCAA, or USADA prohibited lists. None of these products are independently certified; verify with your governing body for your event. | ||||||
Patented gel technology | open formulation | yes (hydrogel) | ||||
Travel-stable for multi-day trips Commercial sachets win for multi-day travel or remote ultras where refrigeration is impossible. |
Build your custom recipe
Ready to clone the formula?
The free DIY Energy Gel calculator generates your exact gram-by-gram recipe sized to your flask, carb target, and texture preference. The Flask Master's Hydrogel Blueprint PDF ($4.99) adds the printable kitchen kit, sub-gram scale guide, and Melt-Proof Rice Chew Bar recipe.
Open the DIY Gel CalculatorComparison FAQ
A homemade hydrogel matches Maurten, GU, SiS, and PF&H on the active biochemistry (dual-transport carb ratio, alginate-pectin matrix, gastric emptying time) at roughly 93 percent lower cost per gram of carbohydrate. The tradeoff is 25 minutes of kitchen prep per batch and a 2 to 3 week refrigerated shelf life.
Is a DIY energy gel really comparable to Maurten Gel 100?
On the biochemistry, yes. The DIY hydrogel uses the same dual-transport carbohydrate ratio (maltodextrin and fructose) and the same alginate-pectin matrix at the same approximate 1 percent fluid weight ratio that Maurten patents disclose. Sutehall et al. (2020) confirmed alginate-pectin hydrogels accelerate gastric emptying versus standard carbohydrate mixes regardless of brand. The DIY tradeoff is kitchen prep time (about 25 minutes per batch) and a 2 to 3 week refrigerated shelf life versus 12+ months for the commercial sachet.
Why does PF&H have so much more sodium than other gels?
Precision Fuel and Hydration positions itself for hot-weather and high-sweat athletes, with 250mg sodium per gel versus 20 to 60mg in most competitors. If your sweat sodium runs above 1000mg per liter, PF&H reduces the need for separate electrolyte capsules. If you sweat lighter, you do not need that much sodium per carb unit and the saltiness can blunt the gel's palatability. The DIY tool lets you set sodium independently of carbs, which neither Maurten nor GU allow.
When is a commercial gel actually the right call?
Three scenarios. First, multi-day backpacking or ultra races where refrigeration is impossible, since DIY gels need to stay cool. Second, race-day if you have not practiced your DIY recipe in training (always rehearse new fueling weeks before a key event). Third, if your time per training week is so limited that 25 minutes of kitchen prep is a real opportunity cost. For everyone else, the DIY hydrogel matches the active biochemistry at roughly 93 percent lower cost.