Brands can develop gentler energy gel formulations by replacing fast-fermenting sugars and high-osmolality carbohydrate blends with more gut-friendly alternatives, adjusting texture for easier digestion, and carefully selecting functional additives. The key is treating stomach tolerability as a core formulation goal from the very first development stage, not as an afterthought. The questions below walk through each dimension of that process, from ingredient selection to regulatory compliance and manufacturing partnership.
What makes an energy gel hard on the stomach?
Energy gels are hard on the stomach primarily because of their high carbohydrate concentration, osmolality, and the types of sugars used. When a gel draws water into the gut to dilute its contents, it can cause bloating, cramping, or nausea, particularly during high-intensity exercise when blood flow to the digestive system is already reduced.
Several formulation factors contribute to gastrointestinal discomfort. High fructose content is one of the most common culprits: fructose is absorbed through a separate transporter from glucose, and when intake exceeds absorption capacity, the excess ferments in the large intestine. Artificial sweeteners, sugar alcohols like sorbitol and maltitol, and certain preservatives can have a similar effect at higher doses.
Gel texture also plays a role. A very thick, dense consistency slows gastric emptying, which means the product sits in the stomach longer during exercise. Conversely, a watery gel with high osmolality can accelerate fluid shifts in the gut wall, triggering urgency or loose stools.
For brands developing energy gel formulations, understanding these mechanisms is essential. Tolerability is not just a consumer comfort issue, it is a performance and brand loyalty issue. A product that causes distress mid-race will not earn repeat purchases, regardless of its energy delivery profile.
What ingredients should brands swap to improve tolerability?
To improve energy gel digestibility, brands should consider replacing high-fructose syrups with multiple-transporter carbohydrate blends, reducing or eliminating sugar alcohols, and choosing natural flavouring and preservation systems with a lower irritation profile. Ingredient selection is the single most powerful lever in gentler energy gel formulation.
Carbohydrate sources
The most evidence-supported approach is using a combination of glucose-based and fructose-based carbohydrates at a ratio that does not overwhelm the fructose transporter, typically around 2:1 glucose to fructose. Rice-based maltodextrin, waxy maize starch, and isomaltulose are increasingly popular alternatives because they are absorbed more slowly and steadily, reducing osmotic stress in the gut. Isomaltulose in particular has a low glycaemic impact and is well tolerated even at higher doses.
Functional additives and sweeteners
Brands aiming for a cleaner label should evaluate which functional additives are genuinely necessary. Electrolytes such as sodium, potassium, and magnesium are beneficial and generally well tolerated. However, artificial sweeteners and high doses of sugar alcohols can be reduced or replaced with natural options like stevia or monk fruit extract. Caffeine, when included, should be dosed carefully, as it is a known gut stimulant and can compound discomfort when combined with a high-osmolality formula.
Natural gelling agents such as agar, pectin, or locust bean gum can replace synthetic thickeners and often have a gentler effect on the digestive system. The right combination depends on the desired texture, target market, and label positioning, all of which are decisions best made early in the product development process.
How does texture and consistency affect gel digestibility?
The texture and consistency of an energy gel directly affect how quickly it empties from the stomach and how easily it is absorbed in the small intestine. A thinner, lower-viscosity gel generally passes through the stomach faster, which can improve tolerability during exercise, but only if the osmolality is also well managed.
Viscosity is controlled through the type and concentration of gelling agents used. A gel that is too thick requires more chewing or effort to swallow, which can be difficult during intense physical effort. It also tends to linger in the stomach longer, increasing the window for discomfort. On the other hand, a gel that is too thin may feel insubstantial and can be perceived as lower quality by the consumer.
From a manufacturing perspective, achieving the right texture requires precise control of pH, mixing temperature, and processing parameters. Gel-phase products are sensitive to minor variations in ingredient ratios or processing conditions, which is why formulation and production must be tightly aligned. Brands that treat texture as a secondary consideration often find that their product performs differently in real-world conditions than it did in early-stage testing.
Packaging also intersects with texture. A thicker gel may require a larger opening or a squeeze-friendly pouch format to be usable on the move. Formats such as capped pouch packs or tube-style packaging are designed specifically to match the viscosity of the product inside, making packaging selection part of the digestibility conversation, not separate from it.
What regulatory and labelling requirements apply to energy gels?
Energy gels sold in the EU are regulated primarily as foods for normal consumption or, in some cases, as foods for specific groups under Regulation (EU) No 609/2013 and related delegated regulations. The applicable category depends on the product’s intended use, composition, and marketing claims, and this classification determines which labelling rules, nutrient declarations, and permitted ingredient lists apply.
In practice, most energy gels on the market are positioned as general foodstuffs with sports-related marketing claims rather than as regulated sports foods. This means they must comply with the EU Food Information to Consumers Regulation (EU FIC, 1169/2011), which requires a full ingredient list, allergen declarations, nutritional information per 100 g and per serving, and net quantity labelling.
Nutrition and health claims are governed by Regulation (EC) No 1924/2006. Only claims on the EU-approved list may be used, and any claim must be substantiated by the product’s actual composition. For example, claiming that a gel “contributes to normal energy metabolism” requires that the relevant vitamins or minerals are present at the levels specified in the regulation.
For brands expanding into multiple markets, labelling requirements vary by country. Language requirements, mandatory information placement, and specific rules around caffeine or certain additives differ across the EU and beyond. Building a flexible labelling architecture from the start, one that can accommodate market-specific versions, is a practical approach that saves time and cost during rollout.
When should a brand work with a contract manufacturer for gel development?
A brand should engage a contract manufacturer for energy gel development as early as the concept stage, particularly when the formulation involves complex textures, functional ingredients, or strict tolerability targets. Waiting until a recipe is finalised before involving manufacturing expertise often leads to costly reformulation later.
Contract manufacturing adds the most value when the product requires specialised process knowledge, and energy gel formulation is a clear example. Achieving a stable, consistent gel-phase product demands precise pH management, controlled mixing sequences, and careful temperature handling throughout production. These are not capabilities that can be improvised at scale, and they are not easily transferred from small-batch kitchen testing to commercial production without expert input.
We work with brands across the full development cycle, from initial concept and flavour profiling through to packaging selection, production, and logistics. Our approach means that formulation decisions are always made with manufacturability in mind, so a brand’s vision for a gentler, cleaner-label energy gel does not get lost in translation between the development kitchen and the production line.
Brands also benefit from contract manufacturing when they want to expand their product range without investing in dedicated production infrastructure. Scaling production up or down, introducing new flavour variants, or adapting a formula for a different market are all significantly easier when a trusted manufacturing partner is already embedded in the process. If you want to learn more about how we can support your product development, our full service offering covers everything from sourcing and formulation to packaging and delivery.