Nitro.Fit

Backed By 31 Peer-Reviewed Studies
57 Servings Per Container: ₹85.95/Serving

24g of whey protein loaded with creatine, beta-alanine, taurine, arginine, and red spinach extract for strength, power, and pump

  • Creatine, Beta-Alanine & Taurine built in for strength and power output
  • Arginine + Red Spinach Extract for nitric oxide and muscle pump
  • Ashwagandha, Trigonella foenum-graecum, and Boron for T-Boost
  • DigeZyme® enzymes included so there’s no bloating or gut discomfort
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EVERY UNIT VERIFIABLE

THE ACTUACIÓN VERIFICATION

Non GMO Non GMO
Soy Free Soy Free
Vegan Vegan
Dairy Free Dairy Free
Gluten Free Gluten Free
Small Batch Production Small Batch Production
GMP Certified GMP Certified

Why Use Nitro.Fit

24g of whey protein loaded with creatine, beta-alanine, taurine, arginine, and red spinach extract for strength, power, and pump

Creatine, Beta-Alanine & Taurine built in for strength and power output

Arginine + Red Spinach Extract for nitric oxide and muscle pump

Ashwagandha, Trigonella foenum-graecum, and Boron for T-Boost

DigeZyme® enzymes included so there’s no bloating or gut discomfort
Build Strength & Power

Build Strength & Power

Creatine, Beta-Alanine, and Taurine restock your ATP-PCr system and buffer fatigue, so you push heavier weight for more clean reps before form breaks down.

Maximize Muscle Pump

Maximize Muscle Pump

Arginine and Oxystorm Red Spinach Extract open two pathways to nitric oxide, widening blood flow so your muscles look and feel fuller mid-set.

Accelerate Recovery

Accelerate Recovery

24g of fast-digesting whey delivers the full amino acid profile your fibers need to start repair the moment you rack the weight, backed by Betaine's cellular hydration support.

WE COULD HAVE JUST SAID IT WORKS.

But you're already reading this far.

So here's everything :

Nitro.Fit

KEY INGREDIENTS

Nitro.Fit has A Whey Protein Base paired with a full performance stack, so the same scoop that rebuilds muscle also drives your strength, pump, and recovery, dosed at clinically relevant levels.

Whey Protein Concentrate
Muscle Repair

Whey Protein Concentrate

Delivers the full essential amino acid profile your fibers need to start repair.
Creatine Monohydrate
ATP-PCr Restock

Creatine Monohydrate

Refuels the system your muscles burn first in heavy lifts and sprints.
DigeZyme® Enzyme Blend
Digestive Support Complex

DigeZyme® Enzyme Blend

Breaks down protein and lactose before they reach the lower gut, where discomfort typically originates.
Beta-Alanine
Fatigue Buffering

Beta-Alanine

Raises carnosine levels so acid buildup hits later, for more clean reps.
Taurine
Cell Volumization

Taurine

Supports muscle contraction and endurance deeper into the session.
Arginine HCl
Nitric Oxide Pathway

Arginine HCl

Direct precursor to the molecule that widens blood vessels for a pump.
Oxystorm® Red Spinach Extract
Second NO2 Pathway

Oxystorm® Red Spinach Extract

Nitrate-rich extract adds a food-derived route to nitric oxide production.
Betaine Anhydrous
Cellular Hydration

Betaine Anhydrous

Pulls water into muscle cells, keeping them volumized under load.
Ashwagandha (5% Withanolides)
Stress & Recovery

Ashwagandha (5% Withanolides)

Stress & Recovery Adaptogen studied for managing training stress and cortisol.
Fenugreek Extract
Traditional Vitality Support

Fenugreek Extract

One of three botanicals in the T-Boost layer, traditionally used to support hormonal balance and vitality.
Tribulus Terrestris (Gokshura)
Traditional Vitality Support

Tribulus Terrestris (Gokshura)

Rounds out the T-Boost complex, traditionally used for its role in vitality and hormonal balance.
Boron Proteinate
Hormone & Bone Support

Boron Proteinate

Dosed as Boron Proteinate for better absorption, a trace mineral studied for its role in hormone metabolism and bone health.
Vitamin B3 (Niacin)
Energy Conversion

Vitamin B3 (Niacin)

Fuels the metabolic pathways that turn every scoop's protein and calories into usable energy.
Vitamin B6
Protein & Amino Acid Metabolism

Vitamin B6

Helps the body break down and use the amino acids delivered by Nitro.Fit's protein base.
Vitamin B12
Energy & Red Blood Cell Support

Vitamin B12

Supports energy metabolism and red blood cell formation, keeping oxygen delivery to working muscle on track.
Vitamin C
Antioxidant Support

Vitamin C

Offsets the oxidative stress that builds up during intense training sessions.
Vitamin E
Cellular Antioxidant Support

Vitamin E

Protects muscle cell membranes from the oxidative damage that hard training generates.
SEEN IN THE WILD

REAL PEOPLE. REAL PERFORMANCE.

See how the Klr.Fit community trains, performs and progresses.

THE SCIENCE BEHIND IT ALL

Explore The Research Behind Our Formula

Muscle Repair

Whey Protein Supplementation Combined with Exercise on Muscle Protein Synthesis and the AKT/mTOR Pathway in Healthy Adults, Ji et al.

Nutrients 2025

Across 21 RCTs, whey protein supplementation extended the post-exercise anabolic window and supported the AKT/mTOR signaling pathway for muscle repair.

Evidence
Muscle Repair

Effectiveness of Whey Protein Supplementation on Muscle Strength and Physical Performance of Older Adults, Al-Rawhani et al.

Clinical Nutrition 2024

This meta-analysis of randomized clinical trials found whey protein supplementation improved muscle strength and physical performance versus placebo.

Evidence
ATP-PCr Restock

The Effects of Creatine Supplementation on Upper- and Lower-Body Strength and Power, Kazeminasab et al.

Nutrients 2025

Creatine plus resistance training produced significantly greater increases in bench press, squat strength, and vertical jump versus placebo across 69 trials.

Evidence
ATP-PCr Restock

Effects of Creatine Supplementation and Resistance Training on Muscle Strength Gains in Adults Under 50, Wang et al.

Nutrients 2024

Creatine combined with resistance training produced significantly greater strength gains than resistance training alone in adults under 50.

Evidence
Fatigue Buffering

Effect of Beta-Alanine Supplementation on Maximal Intensity Exercise in Trained Young Male Individuals, Georgiou et al.

Int. J. Sport Nutr. Exerc. Metab 2024

Across 18 studies, beta-alanine supplementation most effectively improved performance in efforts lasting 4-10 minutes, with 4 weeks of dosing showing the greatest benefit.

Evidence
Fatigue Buffering

Effects of Beta-Alanine Supplementation on Body Composition, Ashtary-Larky et al.

J. Int. Soc. Sports Nutr 2022

This GRADE-assessed review of 20 RCTs examined how beta-alanine's buffering effect on training capacity translates into body composition outcomes.

Evidence
Cell Volumization

The Effects of an Oral Taurine Dose and Supplementation Period on Endurance Exercise Performance in Humans, Waldron et al.

Sports Medicine 2018

Taurine ingestion improved overall endurance performance across trials, regardless of whether it was taken as a single dose or over a longer period.

Evidence
Cell Volumization

Effect of Taurine Supplement on Aerobic and Anaerobic Outcomes, Buzdağlı et al.

Strength & Conditioning Journa 2023

This meta-analysis of randomized controlled trials found taurine supplementation benefited both aerobic and anaerobic exercise outcomes.

Evidence
Nitric Oxide Pathway

The Effect of L-Arginine Supplementation on Maximal Oxygen Uptake, Rezaei et al.

Physiological Reports 2021

This systematic review and meta-analysis found L-arginine supplementation was associated with improved VO2 max, supporting its role as a nitric oxide precursor.

Evidence
Nitric Oxide Pathway

Effects of Arginine Supplementation on Athletic Performance Based on Energy Metabolism, Viribay et al.

Nutrients 2020

This review evaluated how arginine's nitric oxide pathway translates into aerobic and anaerobic performance outcomes across trials.

Evidence
Second NO2 Pathway

Red Spinach Extract Increases Ventilatory Threshold During Graded Exercise Testing, Gonzalez et al.

Nutrients 2018

Red spinach extract raised exhaled nitric oxide levels and improved high-intensity exercise tolerance following chronic supplementation.

Evidence
Second NO2 Pathway

Impact of Red Spinach Extract Supplementation on Bench Press Performance, Muscle Oxygenation, and Cognitive Function, Gonzalez et al.

International Journal of Exercise Science 2021

Short-term red spinach extract supplementation was evaluated for its effect on bench press power output and muscle oxygenation in resistance-trained males.

Evidence
Cellular Hydration

The Effects of Chronic Betaine Supplementation on Body Composition and Performance in Collegiate Females, Cholewa et al.

J. Int. Soc. Sports Nutr. 2018

Nine weeks of betaine supplementation reduced fat mass and showed a trend toward improved high-volume work capacity.

Evidence
Cellular Hydration

Ergogenic Effects of Betaine Supplementation on Strength and Power Performance, Lee et al.

J. Int. Soc. Sports Nutr. 2010

Fourteen days of betaine supplementation increased bench throw power and isometric bench press force in resistance-trained men.

Evidence
Stress & Recovery

Effects of Ashwagandha (Withania somnifera) on Physical Performance: Systematic Review and Bayesian Meta-Analysis, Bonilla et al.

J. Funct. Morphol. Kinesiol. 2021

Across 12 studies, ashwagandha supplementation showed benefits for muscle strength, cardiorespiratory fitness, and post-exercise recovery.

Evidence
Stress & Recovery

Effects of Ashwagandha Supplements on Cortisol, Stress, and Anxiety Levels in Adults, Bachour et al.

BJPsych Open 2025

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Evidence
Digestive Support Complex

Evaluation Of The Safety And Efficacy Of A Multienzyme Complex (DigeZyme®) In Patients With Functional Dyspepsia: A Randomized, Double-Blind, Placebo-Controlled Study, Majeed Et. Al

Journal of Medicinal Food 2018

DigeZyme® supplementation produced statistically significant improvements across all dyspepsia severity measures versus placebo over 60 days, with no adverse events reported.

Evidence
Hormonal Support

Effect of a Plant Extract of Fenugreek (Trigonella foenum-graecum) on Testosterone in Blood Plasma and Saliva in a Double Blind Randomized Controlled Intervention Study, Lee-Ødegård et al.

PLoS ONE 2024

Across 95 men over 12 weeks, fenugreek extract significantly raised saliva testosterone versus placebo, supporting the T-Boost complex's hormonal claim.

Evidence
Recovery & Resistance Training

Beneficial Effects of Fenugreek Glycoside Supplementation in Male Subjects During Resistance Training: A Randomized Controlled Pilot Study, Wankhede et al.

J Sport Health Sci 2016

Over 8 weeks of resistance training, fenugreek glycoside supplementation produced significant anabolic and androgenic activity without any drop in strength or reps to failure.

Evidence
Hormonal Support

The Effects of 6 Weeks of Tribulus terrestris L. Supplementation on Body Composition, Hormonal Response, Perceived Exertion, and CrossFit® Performance, Fernández-Lázaro et al.

Nutrients 2021

In 30 CrossFit-trained males, 6 weeks of Tribulus terrestris significantly raised testosterone and improved bench press performance versus placebo.

Evidence
Recovery Support

6-Week Supplementation with Tribulus terrestris L. to Trained Male CrossFit® Athletes on Muscle, Inflammation, and Antioxidant Biomarkers, Fernández-Lázaro et al.

Int J Environ Res Public Health 2022

The same trained cohort showed improved total antioxidant status and blunted inflammatory markers after 6 weeks of Tribulus supplementation.

Evidence
Hormonal Modulation

Comparative Effects of Daily and Weekly Boron Supplementation on Plasma Steroid Hormones and Proinflammatory Cytokines, Naghii et al.

J Trace Elem Med Biol 2011

In 8 healthy men, 1 week of 10mg daily boron significantly raised free testosterone and lowered estradiol.

Evidence
Energy Metabolism Mechanism

Niacin Cures Systemic NAD+ Deficiency and Improves Muscle Performance in Adult-Onset Mitochondrial Myopathy, Pirinen et al.

Cell Metab 2020

Niacin supplementation restored NAD+ levels and improved muscle strength in both patients and their healthy matched controls.

Evidence
Cofactor Role

Dietary Intake and Food Sources of Niacin, Riboflavin, Thiamin and Vitamin B6 in a Representative Sample of the Spanish Population (The ANIBES Study), Mielgo-Ayuso et al.

Nutrients 2018

This population study confirms niacin's function as a core B-vitamin cofactor across the body's energy-production pathways.

Evidence
Exercise & Skeletal Muscle

Does Vitamin B6 Act as an Exercise Mimetic in Skeletal Muscle?, Kato et al.

Int J Mol Sci 2024

This review outlines how B6 supports skeletal muscle myogenesis and exercise-adaptive gene expression, functioning similarly to physical training itself.

Evidence
Anti-Fatigue & Exercise Performance

A Functional Evaluation of Anti-Fatigue and Exercise Performance Improvement Following Vitamin B Complex Supplementation in Healthy Humans, Lee et al.

Int J Med Sci 2023

28 days of a B1/B2/B6/B12 complex significantly extended time to exhaustion and reduced exercise-induced lactate and ammonia versus placebo.

Evidence
Anti-Fatigue & Exercise Performance

A Functional Evaluation of Anti-Fatigue and Exercise Performance Improvement Following Vitamin B Complex Supplementation in Healthy Humans, Lee et al.

Int J Med Sci 2023

28 days of a B-complex including B12 significantly extended time to exhaustion and reduced fatigue-related blood metabolites versus placebo.

Evidence
Anaerobic Performance

Short-Term Methylcobalamin Supplementation Is Associated with Changes in Anaerobic and Cognitive Performance in Amateur Cyclists, Martínez-Noguera et al.

2026 Just 3 days of methylcobalamin supplementation increased peak power and reduced fatigue across repeated sprints in trained cyclists.

Nutraceuticals

Evidence
Antioxidant Support

Influence of Vitamin C Supplementation on Oxidative Stress and Neutrophil Inflammatory Response in Acute and Regular Exercise, Silva et al.

Br J Nutr 2013

Vitamin C supplementation reduced markers of exercise-induced oxidative stress and neutrophil-driven inflammation in trained individuals.

Evidence
Muscle Damage & Oxidative Stress

Can Low-Dose Dietary Vitamin E Supplementation Reduce Exercise-Induced Muscle Damage and Oxidative Stress? A Meta-Analysis of Randomized Controlled Trials, [author team], 2022

Nutrients 2022

Across 44 RCTs, vitamin E supplementation under 500 IU reduced creatine kinase and lactate dehydrogenase, with the strongest protective effect seen in athletes.

Evidence
Acute Recovery Support

Effects of Acute Vitamin C plus Vitamin E Supplementation on Exercise-Induced Muscle Damage in Runners: A Double-Blind Randomized Controlled Trial, [author team], 2022

Nutrients 2022

In endurance-trained runners, a combined vitamin C and E dose taken before exercise was assessed for its effect on next-day muscle damage and soreness markers.

Evidence

NEED TO KNOW

Questions, answered.

Regular whey gives you amino acids and stops there. Nitro.Fit gives you the same 24g protein base, then layers in creatine, beta-alanine, taurine, a nitric oxide booster, a hydration complex, and a T-Boost complex, so you're not buying four separate tubs to build the same stack.