GSN OxyBurn

How GSN OxyBurn Fatburner supports your objectives

🚗 2g of L-carnitine — fatty acid transport to mitochondrial fuel

L-carnitine is the molecular transporter that carries long-chain fatty acids across the inner mitochondrial membrane, where they are oxidised to produce ATP. Without adequate L-carnitine, fatty acids cannot enter the mitochondria and cannot be used as fuel — they remain stored as triglycerides. At 2g per serving (4g total at two servings per day), OxyBurn provides L-carnitine at the dose range used in clinical studies on fat oxidation during exercise. The effect is most pronounced during aerobic exercise, when fat oxidation is the primary energy pathway.

🌾 1.5g glucomannane per serving — 3g/day for the EU weight loss health claim

Glucomannane from konjac is one of only a small number of ingredients that carries an EU-authorised health claim for weight management: "Glucomannane in the context of an energy-restricted diet contributes to weight loss." This claim requires a minimum of 3g per day taken in three doses of 1g before meals. At 1.5g per serving across two daily servings, OxyBurn delivers exactly 3g of glucomannane per day — the minimum threshold for this evidence-backed claim. Glucomannane absorbs up to 50 times its own weight in water, forming a viscous gel in the stomach that delays gastric emptying, reduces post-meal blood glucose spikes and extends the feeling of fullness between meals.

🧠 300mg L-theanine — calm focus without stimulation

L-theanine is an amino acid naturally present in green tea that promotes a state of alert relaxation — improving focus and reducing perceived stress without sedation or stimulation. It is widely used as a caffeine modulator (reducing jitteriness when taken alongside caffeine), but in OxyBurn it operates independently of any caffeine. At 300mg per serving, it supports the mental clarity and appetite management focus needed during a caloric restriction phase, without contributing any stimulant load.

🫀 500mg choline bitartrate — normal lipid metabolism

Choline is an essential nutrient that carries the EU-authorised health claim for contributing to normal lipid metabolism. It is required for the synthesis of phosphatidylcholine — a key component of cell membranes and the primary transport vehicle for fat out of the liver. Inadequate choline leads to fat accumulation in the liver (hepatic steatosis), making it a functionally important nutrient during periods of increased fat mobilisation such as a caloric deficit. At 500mg per serving (1g total at two servings/day), OxyBurn provides a meaningful daily choline contribution.

🌿 5.5g of dietary fibre per serving — inulin, acacia and glucomannane

OxyBurn provides 5.5g of dietary fibre per 10g serving from three complementary sources: inulin (3g, a prebiotic fructooligosaccharide), acacia fibre (2g, a very well-tolerated soluble fibre) and glucomannane (1.5g, the most water-absorbing fibre known). Together at two servings per day, they provide 11g of dietary fibre — approximately 40% of the EU daily recommended fibre intake — contributing to satiety, digestive comfort and the modulation of blood glucose response after meals.

🚫 0mg caffeine — the defining differentiator

No caffeine. No synephrine. No green tea extract for stimulant purposes. No guarana. No yohimbe. OxyBurn's complete freedom from stimulants means it can be stacked with any caffeinated pre-workout without pushing total daily caffeine to unsafe levels, taken at any time of day or evening, and used continuously without caffeine tolerance developing. Athletes who are already using NOCCO, Bolero Energy, or any caffeinated pre-workout can add OxyBurn to their stack without concern.

🎯 Goal guide

🔥 Weight loss / cutting: 2 servings/day (morning and pre-workout or mid-afternoon). The primary use case — glucomannane and fibre for appetite control, carnitine for fat oxidation, choline for lipid metabolism.

🏋️ Mass gain (body recomposition): 1 serving/day. Maintains metabolic efficiency and appetite regulation during a controlled caloric surplus.

⚖️ Daily wellness: 1 to 2 servings/day. Prebiotic fibre, choline and carnitine as a daily metabolic maintenance stack.

Serving suggestion

Mix 1 scoop (10g) in a large glass of water (minimum 250ml). Take 2 servings per day: one in the morning and one 20 minutes before training. On non-training days, take the second serving in the mid-afternoon. The glucomannane effect on appetite is maximised when taken with a large volume of liquid 20 to 30 minutes before a meal — the fibre expands in the stomach and reduces perceived hunger at the meal.

Important: drink at least 250ml of water per serving. Glucomannane must be consumed with adequate water — taking it without sufficient liquid can cause a choking hazard as the fibre expands rapidly.

Best times to enjoy it

🌅 Morning — first serving

The morning dose provides the day's first appetite management stimulus and L-carnitine loading for fat mobilisation throughout the morning. Taking it 20 to 30 minutes before breakfast is the most effective protocol for the glucomannane satiety effect — consume the serving, wait 20 minutes, then eat breakfast. The reduced hunger at breakfast translates to fewer calories consumed without the psychological discomfort of restriction.

🏋️ 20 minutes before training — second serving (training days)

Pre-workout L-carnitine is the most evidence-supported timing for fat oxidation enhancement. Carnitine plasma levels peak approximately 2 to 3 hours after ingestion, but the 20-minute pre-workout timing aligns the beginning of the carnitine absorption window with the start of aerobic exercise, when muscle carnitine demand is highest. The L-theanine provides a calm pre-workout focus state without any stimulant contribution.

☀️ Mid-afternoon — second serving (non-training days)

The mid-afternoon timing on rest days bridges the most common inter-meal hunger window (3 to 6pm) with the glucomannane and fibre satiety complex, reducing the caloric contribution of afternoon snacking.

🌙 Evening compatibility

Since OxyBurn contains zero caffeine and zero stimulants, there is no restriction on evening use. Athletes who prefer to take their second serving in the evening — for example, those who train in the late afternoon or evening — can do so without any risk of sleep disruption.

Glucomannane EU weight loss claim protocol

The EU-authorised health claim for glucomannane requires a minimum of 3g per day — achieved with two daily servings of OxyBurn.

🏅 Sport Nutrition "Did you know?"

L-carnitine is one of the most misunderstood supplements in the fat loss category. Its primary function is not thermogenesis or stimulation — it is the molecular key that unlocks the mitochondrial membrane for fatty acids. Without carnitine, fatty acids are stranded outside the mitochondria, unable to be oxidised. The body synthesises carnitine from lysine and methionine, but synthesis may be insufficient during high training volumes or caloric restriction. Research consistently shows that L-carnitine supplementation increases fat oxidation during moderate-intensity aerobic exercise — the exercise zone where fat is the primary fuel source. At 4g per day (two servings), OxyBurn provides carnitine at the upper range of the doses studied in the peer-reviewed literature on exercise fat oxidation.

Full ingredient list

Inulin (3g), L-carnitine (2g), acacia fibre (Acacia arabica) (2g), glucomannane from konjac (1.5g), rice flour (Oryza sativa) (0.7g), choline bitartrate (0.5g), L-theanine (0.3g).

Seven ingredients. Every gram declared. No proprietary blend.

Complete ingredient breakdown per 10g serving

Allergens

Allergens: No major allergens declared. No added sugar, gluten-free, GMO-free. Always refer to the current product label for the most up-to-date allergen information.

Product characteristics:

• 0mg caffeine — stimulant-free
• 0g sugar
• 10 kcal per serving
• 5.5g dietary fibre per serving
• Gluten-free
• GMO-free
• NSF certified
• cGMP certified production
• Suitable for evening use — no sleep disruption

Nutritional values per serving (10g)

Active ingredient profile per serving (10g) — fully declared

Jar duration guide

Q1 — Why is OxyBurn stimulant-free when most fat burners use caffeine?

GSN Labs' position is clear: most fat burners provide a perceived energy effect that comes from 200 to 300mg of caffeine — not from any actual fat metabolism mechanism. The caffeine makes you feel warmer, more alert and more energetic, which is interpreted as "burning," but the actual fat oxidation contribution of caffeine is modest and habituates rapidly as tolerance develops. OxyBurn targets fat metabolism through mechanisms that do not depend on caffeine: L-carnitine facilitates fatty acid entry into mitochondria; glucomannane reduces caloric absorption and appetite; choline supports hepatic lipid metabolism. These mechanisms remain active regardless of caffeine tolerance, can be used by caffeine-sensitive individuals, and allow evening use without sleep disruption.

Q2 — What is the glucomannane EU health claim and why does it matter?

The European Food Safety Authority (EFSA) has authorised the claim that glucomannane, in the context of an energy-restricted diet, contributes to weight loss — at a minimum dose of 3g per day taken in three doses of 1g before meals with water. This is one of only a small number of weight management ingredients to have achieved EU health claim authorisation, meaning the evidence for its effectiveness has been reviewed and accepted by EFSA's scientific panel. By providing 1.5g per serving across two daily doses, OxyBurn meets and slightly exceeds this evidence threshold (3g total). This is a meaningful quality signal — not a marketing claim, but a regulatory recognition of the ingredient's effectiveness.

Q3 — Can I use OxyBurn alongside GSN Ultrapure Creatine and GSN BCAA + EAA + Electrolytes?

Yes. All three products are complementary and non-conflicting. Creatine supports explosive strength and lean mass — particularly important during a cutting phase to preserve muscle. BCAA + EAA + Electrolytes supports anti-catabolism and hydration during training. OxyBurn supports fat oxidation, appetite management and lipid metabolism. Together, they represent a comprehensive cutting-phase stack: muscle preservation (creatine), intra-workout anti-catabolism (EAA), and fat metabolism support (OxyBurn) — all without caffeine, so they can be combined with any caffeinated pre-workout of choice.

Q4 — If OxyBurn has no caffeine, what provides the energy effect?

OxyBurn does not produce a stimulant energy effect — and this is intentional. The L-theanine (300mg per serving) promotes alert, calm focus without stimulation or jitteriness. The L-carnitine improves metabolic efficiency, which some users experience as sustained energy (particularly during exercise) rather than a stimulant spike. Users who are accustomed to caffeine-based fat burners may initially notice the absence of the stimulant sensation, but this is precisely the product's value proposition: fat metabolism support that functions independently of the nervous system, without the inevitable crash when the caffeine wears off.

Q5 — How many days does one 300g jar last at the recommended dose?

At two servings per day (the recommended protocol for the glucomannane EU weight loss claim), each 10g serving used twice daily consumes 20g per day. The 300g jar provides exactly 15 days of supply at this dose. For a meaningful supplementation period of 4 to 8 weeks, 2 to 4 jars are needed. At one serving per day (maintenance or cost management), the jar provides 30 days.