THE ESSENTIAL AMINO ACIDS
ATHLETE FUEL® REGEN upholds our commitment to high-dosed, pure, and premium supplements. This advanced formula delivers all 9 essential amino acids in their optimal ratio, manufactured through a patented fermentation and debittering process. EAAs are absolutely critical for building new muscle tissue and repairing muscle fibers damaged during intense training sessions. They are called “essential” because the human body cannot produce them on its own and must obtain them through proper diet or targeted supplementation.
With an impressive 12 grams of EAAs per scoop, REGEN is among the most potent amino formulas available, each amino dosed according to scientific research. Using patented vegan fermented and debittered essential amino acids, it ignites and supports muscle protein synthesis, accelerates repair, and promotes sustained lean muscle growth. And, as any other product of ours, is naturally flavored, with no artificial colors, fillers or additives.
Other ingredients: Natural flavours, stevia extract (E960c), sucralose, beta carotene (colouring). Allergens: none.
Mix one rounded scoop with 250–300 ml of cold water in a shaker and shake well until fully dissolved. Consume before, during, or immediately after your workout.
REGEN delivers all 9 essential amino acids in scientifically backed ratios to rapidly replenish the amino acids depleted during intense training. By supporting muscle protein synthesis immediately after exercise, it helps reduce recovery time and prepares your body for the next session faster.
With 4 g of leucine and 8 g of BCAAs in the optimal 2:1:1 ratio, REGEN is specifically formulated to activate the pathways responsible for muscle repair and growth. Combined with the full EAA spectrum, it provides the complete building blocks required to support lean muscle development and performance adaptation.
Intense training increases muscle protein breakdown and accelerates fatigue. The highly bioavailable fermented amino acids in REGEN help preserve muscle tissue, support recovery efficiency, and reduce exercise-induced soreness, allowing you to train harder and more consistently.
Unlike many amino acid products known for excessive bitterness and poor mixability, REGEN uses premium fermented and debittered EAAs for a smoother drinking experience and effortless mixing. Combined with natural flavouring and 95% Reb-M stevia, it delivers clean performance without the harsh aftertaste typical of many EAA formulas.
Our essential amino acid blend is a premium, fully vegan mixture of all nine EAAs, produced exclusively through natural fermentation and enhanced with an advanced, patented microencapsulation process. This technology not only improves stability and dispersion, but also allows the amino acids to be debittered, resulting in a remarkably clean, smooth, and pleasant taste profile compared to standard EAA powders. The powder is instantized for effortless mixing, ensuring a uniform texture with no grittiness, while maintaining the integrity and bioavailability of each amino acid. The result is a highly refined EAA blend that delivers performance-grade quality with a noticeably superior sensory experience.
Each scoop of REGEN delivers one of the highest essential amino acid dosages on the market: 12 grams per serving. EAAs are required for building new muscle tissue and supporting cellular repair during recovery. They are considered essential because the body cannot produce them on its own and must obtain them through diet or supplementation. Each amino acid is precisely dosed based on amounts shown to be effective in multiple scientific studies, ensuring both efficacy and balance.
Of the 12 grams per serving, 8 grams are branched-chain amino acids (leucine, isoleucine, and valine) provided in the scientifically recommended 2:1:1 ratio. Leucine plays the primary role in stimulating muscle protein synthesis, especially post-exercise. Valine is particularly valuable pre-workout, as it helps blunt fatigue through central mechanisms in the brain, while isoleucine supports muscle tissue repair and may contribute to improved energy availability.
Many amino acid products focus heavily on BCAAs while neglecting the full spectrum of essential amino acids required for complete muscle protein synthesis. Without all 9 EAAs present in meaningful amounts, recovery and muscle-building potential become limited.
A large portion of EAA formulas use cheap amino acid sources with poor taste and harsh bitterness, often masked through excessive sweeteners and artificial flavouring. The result is an unpleasant drinking experience that becomes difficult to consume consistently.
Many EAA products are built around marketing claims rather than clinically meaningful dosages. Small servings with ineffective amino acid quantities may look impressive on the label but fail to properly support muscle repair, recovery, and performance adaptation after intense training.
Most amino acid drinks rely on artificial colours, flavourings, and unnecessary additives to compensate for poor ingredient quality. Hidden sourcing, weak formulations, and low manufacturing standards have become common across the category, prioritizing margins over performance and ingredient integrity.
Many companies advertise their supplements as "pure" or "natural", hoping you won't go and read the ingredients list where you'll find artificial flavours and colourings. All of our supplements are only flavoured with natural substances, keeping the taste nice and natural and providing you one of the shortest ingredients list on the market.
Whatever the excuse the manufacturer and/or the distributor would use, we can assure you that a quality product won't need any of these toxic ingredients. We only use stevia as a natural sweetener and we don't use any filler or additive, not even the wide-spread silicon dioxide, which some recent medical literature has linked to health problems. Our commitment to you is to deliver a 100% natural product.
Overall rating: 5.0 / 5 from 23 reviews.
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"Been training six days a week for a competition prep and recovery was becoming a problem. Added REGEN intra-workout four weeks ago and the cumulative soreness I was building up between sessions has dropped significantly compared to when I was using MyProtein EAA. 12 grams of vegan fermented EAAs at a proper dose makes a real difference when you're training at that frequency. Clean formula, great taste, does the job."
"Uso REGEN da due mesi abbinato a BUILD post-workout. La combinazione è molto efficace. Il dolore muscolare dopo le sessioni pesanti si risolve in tempi molto più rapidi rispetto a prima e l'energia durante gli allenamenti successivi è nettamente migliore. La qualità degli aminoacidi si sente, fermentati vegani senza nessuna nota amara. Prodotto serio."
"Use REGEN intra-workout alongside GRIND and the combination is genuinely excellent. Pump stays strong all the way through, recovery the next day is noticeably better. The mango flavour mixes clean with no residue. Good product."
"Formula pulita, dosaggio serio, gusto ottimo. Lo uso da sei settimane durante l'allenamento e la differenza nel recupero è evidente già dal giorno successivo. I 12 grammi di EAA per porzione sono esattamente quello che serve, niente di meno."
"Χρησιμοποιώ REGEN εδώ και δύο μήνες, κυρίως κατά τη διάρκεια της προπόνησης. Η διαφορά στην ανάρρωση είναι αισθητή από την πρώτη εβδομάδα. Ο μυϊκός πόνος μετά από βαριές προπονήσεις έχει μειωθεί σημαντικά και η ενέργεια παραμένει σταθερή κατά τη διάρκεια της συνεδρίας. Τα 12 γραμμάρια EAA ανά μερίδα είναι πραγματικά σοβαρή δόση και η γεύση mango είναι καθαρή και φυσική. Ένα brand που δεν κάνει εκπτώσεις στην ποιότητα."
"Ho sempre odiato il sapore degli aminoacidi essenziali. REGEN è completamente diverso, niente amarezza, niente retrogusto chimico. Il gusto mango è fresco e naturale. Lo uso a metà allenamento e il recupero è migliorato in modo evidente."
"Ho sempre integrato gli EAA ma spesso mi ritrovavo con prodotti sottodosati o dal sapore pessimo. REGEN risolve entrambi i problemi in un colpo solo. 12 grammi di EAA per porzione è un dosaggio serio e il processo di fermentazione vegana con debittering si sente chiaramente nel gusto, niente amarezza, niente retrogusto chimico. Lo uso intra-workout e il recupero tra le sessioni è migliorato in modo evidente. Uno dei migliori acquisti che abbia fatto nell'ambito degli integratori."
"Honest review from someone who trains four times a week and used to wake up the day after leg sessions barely able to walk down stairs. I started taking REGEN immediately post-workout about six weeks ago and the soreness has gone from genuinely limiting to something I barely notice. I know amino acids can be overhyped but the dose in this product is high enough that it actually does something. The mango flavour is really good too, one of the better tasting supplements I've come across. Simple, clean, effective."
"Most EAA products I've tried give you 5 or 6 grams and call it a day. REGEN gives you 12 grams of fully fermented vegan EAAs and you feel the difference. Less soreness, faster recovery, more energy going into the next session. This is what the dose should always have been."
"I've been through a lot of EAA supplements over the years and the thing that always put me off was the taste. Standard EAA powders have that harsh, chemical bitterness that no amount of flavouring fully covers. REGEN is genuinely different and the debittering process is clearly the reason why. The mango flavour is clean and light, almost refreshing during a session. But the taste is really just the entry point. The dosing is what matters and 12 grams of fully fermented vegan EAAs with 8 grams of BCAAs in the right ratio is a serious formula. Soreness is down noticeably since I started using it intra-workout. This is the one."
