Intra-Fuel: BCAA Post-Workout Recovery (5,000mg) CATEGORY5
Intra-Fuel: BCAA Post-Workout Recovery (5,000mg) CATEGORY5
Intra-Fuel: BCAA Post-Workout Recovery (5,000mg) CATEGORY5
Intra-Fuel: BCAA Post-Workout Recovery (5,000mg) CATEGORY5

Intra-Fuel: BCAA Post-Workout Recovery (5,000mg)

Regular price $39.99 Save $-39.99
-27 in stock


Building muscle takes time and dedication. You know that, everyone knows that. You need a product that helps you achieve a muscular, not bulkier, body. Would you trade head-turning musculature for short term bulk? Intra-Fuel carries on the philosophy of the Golden Era of bodybuilding and fitness in what has become a fundamental trio of ingredients for natural bodybuilders and athletes wishing to build hard, dense, quality muscle.


Keep your hard earned muscle fed, whether you’re at home or at the gym. Intra-Fuel is a muscle-builder formulated to add muscle, not bulk. 10g of BCAAs, L-Glutamine, and Electrolyte Vitamin B6 are delivered in just 1 scoop of this mouth-watering powder that easily mixes with water with no artificial dyes or flavorings!


  • 45 Servings
  • Taste Great
  • No Sugar or Calories
  • Speed Recovery
  • Increase Protein Synthesis
  • 2:1:1 Ratio For Increased Leucine Dosage
  • Features 1g of L-Glutamine & Vitamin B6
  • Formulated for Easy Dispersion in Water
  • No Artificial Flavorings
  • No Artificial Dyes†

The Science

How BCAAs Grow Muscle

Amino acids are strung together by the body into polypeptide chains which serve as the basis of all proteins in the body- from muscle tissue, to skin, to enzymes that catalyze vital reactions. The amount of free amino acids you have influence the rate of protein synthesis in your body- how fast you make the proteins and how much you make. Revved up protein synthesis is how your cells grow, including muscle tissue.

BCAAs are the 3 amino acids (Leucine, Isoleucine,Valine) with the unique property of having a branched non-polar side chain, making these amino acids hydrophobic and playing a major role in how these amino acids are used. BCAAs, and specifically leucine, have shown the ability to increase protein synthesis levels by stimulating the mTOR (mechanistic target of rapamycin) pathway. BCAAs have the ability to trigger the phosphorylation of mTOR which communicates to the cell to rev up synthesis-and this is dependent on the concentration of BCAAs in your cell. BCAA supplementation of 7g has been show to increase protein synthesis 22%.

Science-Backed Research

Science-Backed Supporting Research

Effect of branched-Chain Amino Acid Supplementation on Muscle Soreness following Exercise: A Meta-Analysis

“All studies included in the current analysis were:peer-reviewed publications; available in English; utilized a random control design that compared a BCAA group to a placebo control group following exercise; and assessed soreness of muscle tissue during recovery.Delayed-Onset-Muscle-Soreness was assessed in 61 participants following ingestion of a BCAA supplement over the course of these interventions. The cumulative results of 37 effects gathered from 8 studies published between 2007 and 2017 indicated that BCAA supplementation reduced DOMS following exercise training (ES = 0.7286, 95% CI: 0.5017 to 0.9555, p < 0.001). A large decrease in DOMS occurs following BCAA supplementation after exercise compared to a placebo supplement.”




Exercise promotes BCAA catabolism: effects of BCAA supplementation on skeletal muscle during exercise
“BCAA requirement is increased by exercise. Furthermore, BCAA supplementation before and after exercise has beneficial effects for decreasing exercise-induced muscle damage and promoting muscle-protein synthesis; this suggests the possibility that BCAAs are a useful supplement in relation to exercise and sports”





The Weight Loss Effects of Branched Chain Amino Acids and Vitamin B6: A Randomized Controlled Trial on Obese and Overweight Women
Significant time × treatment interactions in waist to hip ratio (P = 0.005), left leg lean (P = 0.004) and right leg lean (P = 0.023) were observed. Overall, supplementation with BCAA and vitamin B6 could preserve legs lean and also attenuated waist to hip ratio.





Intra-Fuel have been shown to promote muscular endurance, decrease fatigue, and improve muscle recovery by playing a key role in stimulating protein synthesis. They are part of an optimal and essential post workout routine for any active individual looking to recover faster from training with no calories or sugar!



This exact 4g dose of leucine that was shown in a clinical study to help subjects increase their 5 rep max strength by over 40 percent. Suitable for men and women looking for lean muscle building power, not bulk or a weight gainer. Intra-Fuel is a great supplement to your preworkout and a healthy diet.



Keep feeding your muscles, even during limited activity. Intra-Fuel natural muscle building and preserving supplement. Its unique formula delivers a proven trio of muscle building ingredients in the form of branched chain amino acids (BCAA), L-glutamine, & Vitamin B6 in a flavored powder that mixes easily and tastes great with water or your favorite protein shake.



Whether it’s replacing morning coffee or keeping you optimized when you’re in the gym, on the field, or at the office, you get the all the performance benefits in 1 drink. Just mix 1/2 scoops (6.5g) of cold water for Anytime Energy or Recovery for Intense Training (vary amount of water by taste preference)!



Intra-Fuel products are backed by a 30-day full money-back guarantee. Only one thing has ever mattered to Category5: our customers. Before becoming a best-selling brand with thousands of loyal customers and followers, this was our priority. That will never change. Our experts are available by email or social media to answer questions regarding the best way to use a product.

Supplement Facts

Our Guarantee

All CATEGORY5™ products are manufactured in an UL NPA certified, FDA Inspected cGMP (Current Good Manufacturing Practice) certified facility. This ensures that our facilities comply with all Current Up To Date Food and Drug Administration regulations and requirements for the manufacturing of our supplements. Every single raw material used in our products is identity tested before production at a minimum and all finished products are submitted to rigorous quality control and assurance processes and procedures prior to being released to our Products. Guaranteeing the quality and safety of every bottle of CATEGORY5™ product continues to be at the core of our business and our vision.


*cGMP refers to the Current Good Manufacturing Practice regulations enforced by the US Food and Drug Administration (FDA). CGMPs provide for systems that assure proper design, monitoring, and control of manufacturing processes and facilities