The 2:1:1 ratio, not a proprietary blend
5,000 mg of leucine, isoleucine and valine in the ratio the research used, plus L-glutamine. Every amount is on the label.
5,000 mg of branched-chain amino acids and L-glutamine in fruit punch. Built for the gap between meals and the session you train through anyway — alongside real protein, not instead of it.
WHY IT WORKS
A recovery tool with a narrow, honest job — and we will tell you when whole protein would serve you better.
5,000 mg of leucine, isoleucine and valine in the ratio the research used, plus L-glutamine. Every amount is on the label.
Built for the long stretch between lunch and a late session, or a morning workout you train through fasted, when whole protein is not practical.
Amino acids are what your body rebuilds with. This gives it the three it burns through fastest during training.
Half a scoop in 8 to 10 oz of cold water. No chalk, no shaker-bottle sludge, nothing to chew.

The Research
Including the paper that argues against selling them to you as a protein replacement, because it is the most important one here.
Myofibrillar protein synthesis rose 22% above placebo when trained men took BCAAs after resistance exercise. The same authors note the rise was smaller than what a complete protein produces.
A review in the Journal of the International Society of Sports Nutrition argues that BCAAs alone cannot maximally stimulate muscle protein synthesis, because building muscle needs all nine essential amino acids, not three.
A systematic review found BCAA supplementation reduced markers of exercise-induced muscle damage and soreness, but mainly in people with low muscle damage and a diet already adequate in protein.
Simple as 1 · 2 · 3
Mix 6.5 g into 8 to 10 oz. Give it a minute to dissolve fully rather than drinking it gritty.
Before, during or straight after training. On a rest day, use it between meals if the gap runs long.
This sits alongside real protein, it does not replace it. Aim for a complete protein source in every main meal.
Mix half a scoop (6.5 g) into 8 to 10 oz of cold water or your drink of choice. Give it a minute to dissolve fully. Best taken before training, during training, or between meals.
Contains FD&C Red #40 as a colour. Contains no caffeine.
Keep Building
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Three amino acids are not nine. If your daily protein intake is low, fix that first with food or a complete protein powder. This is a supplement to an adequate diet, not a shortcut around one.
The fruit punch flavour is coloured with FD&C Red #40 and sweetened with sucralose and acesulfame potassium. If you avoid artificial colours, choose the honeydew watermelon flavour, which is coloured with beet powder and grape skin extract instead.
Speak with a healthcare professional before use if you have a medical condition, take prescription medication, or have any condition affecting how your body handles amino acids.
Stick to the recommended amount. Keep out of reach of children, and do not use if the safety seal is damaged or missing.
See the difference
Verified Reviews
Helped my late sessions
I use this for the gap between work and training. Mixes fast and sits light, which is exactly what I needed.
No chalky aftertaste
Fruit punch tastes clean and does not leave that sticky shaker smell. Easy to keep in the gym bag.
Good between meals
I am not using it instead of protein, but between lunch and a 6pm lift it makes the session feel less flat.
Solid recovery support
I noticed less next-day heaviness after leg days. Took a couple weeks of using it consistently.
Clear label sold me
The 2:1:1 ratio is actually stated and the dose makes sense. No mystery blend, no label games.
Easy during workouts
I sip it through long sessions and it does not bother my stomach. That alone makes it a keeper.
Good flavor, not too sweet
Most fruit punch powders are candy-level sweet. This one is still sweet, but much easier to drink.
Pairs well with creatine
I mix it with creatine on training days. Dissolves cleaner than the BCAA powders I used before.
Helps fasted mornings
For early workouts before breakfast, this is the thing I reach for. Light and quick.
Actually transparent
I like that the page explains what BCAAs can and cannot do. That made me trust the product more.
Great for long lifts
Not magic, but I feel steadier deep into a longer lift. Fruit punch is the better flavor for me.
No caffeine is useful
I train at night, so caffeine-free matters. This does the job without touching my sleep.
No shaker sludge
It mixes all the way if you give it a minute. No grit at the bottom.
Good habit around training
I use half a scoop before and finish it during the session. Simple routine that stuck.
Took a little trial and error
Cold water and a quick shake works best. Once I figured that out, I liked it a lot.
Clean recovery add-on
This is not replacing meals for me. It is a clean add-on around hard training days.
Better than the old neon powders
Taste is lighter and the label is way more straightforward than what I used before.
Good for two-a-days
On double-session days it is easy to get down and does not feel heavy.
Would buy again
I wish it came in a larger tub, but the formula and flavor are both strong.
Recovery without stimulants
Exactly what I wanted for evening training: amino acids, no caffeine, no crash.
Good Questions
They contribute, and on their own they are not enough. A 2017 trial found BCAAs raised muscle protein synthesis 22% above placebo after resistance training, and the same paper noted a complete protein does more. Building muscle needs all nine essential amino acids. Treat REBUILD as a tool for the gaps in a diet that already hits your protein target.
Before, during or after training, or between meals when the gap runs long. The clearest case is a fasted morning session, where you want amino acids available and a full meal is not realistic.
Yes to both. Creatine does a different job and has stronger evidence for strength and power. If you are already drinking a whey shake around your session, that shake contains BCAAs and more, so REBUILD adds less on those days.
Two parts leucine to one part each of isoleucine and valine. It is the ratio used in most of the published research, and leucine is weighted heaviest because it is the amino acid most directly involved in signalling muscle protein synthesis.
Technically yes. Amino acids provide calories and prompt an insulin response, so a strict fast is broken. If your fast is about training in a low-food state rather than absolute abstinence, most people find half a scoop acceptable. Decide which version of fasting you are actually doing.
No. REBUILD is caffeine-free, so it works before an evening session without affecting your sleep. If you want stimulants, take them separately so you can control the dose.
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