L-Arginine 1000mg 60 Veg Caps — Nitric Oxide Booster for Pumps, Stamina & Endurance (FSSAI Lab-Tested India)
About Zenith Sports
Zenith Sports is an Indian sports nutrition brand on a single mission: make lab-tested, easy-to-digest protein supplements that Indian athletes can actually trust.
Founded in 2020 and headquartered in Bangalore, Zenith Sports was built to fix two problems that quietly hurt every Indian gym-goer — bloating from cheap whey, and uncertainty about authenticity. Our answer was an 8-enzyme digestive blend in every whey and mass gainer, paired with a two-step QR-code authenticity check on every pouch you buy.
What makes Zenith different
1. 8-enzyme digestive blend in every protein SKU
Every Zenith whey and mass gainer is fortified with Protease, Lactase, Lipase, Amylase, Alpha-galactosidase, Gluco-amylase, Invertase and Cellulase. The blend helps break down protein and lactose efficiently, so you get maximum absorption without the bloating most Indian users associate with whey.
2. USA-imported whey concentrate at 80% protein-by-weight
Our raw whey is imported from the USA — one of the world’s highest-quality whey supply chains — and processed to a clean 80% protein-by-weight concentrate. No fillers, no artificial sweeteners in our unflavoured range, no banned substances.
3. Lab-tested every batch, with proof
Zenith Sports products are manufactured by Medizen Labs Pvt Ltd at our partner facility in Bangalore. The facility holds an FSSAI license (No. 11215332000675) and is GMP-certified. Every batch is third-party lab tested for heavy metals and adulterants — and we publish the test reports on our product pages, not behind an email gate.
4. Two-step QR authenticity check on every pack
Counterfeiting is the worst-kept secret in Indian supplements. We fight it with a two-step verification on every pouch: scan the QR code on the front, then scratch and scan the hidden Scratch QR code inside. Both must match at our verification page for the product to be authentic.
Who we are
Zenith Sports is operated by Meltingpot Concepts Pvt Ltd, headquartered in Bangalore, Karnataka. We are an India-first brand. Every product is formulated for Indian bodies, Indian climate, and Indian price points — the same protein quality international athletes buy, without the international markup.
Our standards at a glance
- FSSAI License: 11215332000675
- Manufacturing partner: Medizen Labs Pvt Ltd, Bangalore
- Certification: GMP-certified facility
- Testing: Third-party heavy-metals and adulterant testing on every batch
- Authentication: Two-step QR-code verification on every pack
- Whey source: USA-imported concentrate
- Dietary: 100% vegetarian range
- Founded: 2020, Bangalore, India
Get in touch
We’d rather hear from a customer than read another five-star review. Reach us at:
- Email: orders@zenithsports.in
- Phone: +91 8884445611
- Verify a product: QR verification page
- Free consultation: Book a call with our nutrition team
Last updated: June 2026.
Zenith Sports L-Arginine delivers 1000mg of pure L-Arginine per 2-capsule serving. Arginine is the direct precursor your body uses to produce nitric oxide — the vasodilator that widens blood vessels for stronger muscle pumps, better oxygen delivery, and improved exercise capacity. Manufactured at our FSSAI-approved (License 11215332000675), GMP-certified facility in Bangalore by Medizen Labs. Vegetarian capsules. Third-party lab tested every batch.
The science
How arginine becomes the pump.
Arginine isn't the workout. It's the road your blood takes to get there. Wider road, more reps.
Arginine enters the bloodstream.
Unlike citrulline, arginine works directly — no kidney conversion step needed. The trade-off: some is broken down in first-pass liver metabolism.
Endothelial cells use it to make nitric oxide.
The enzyme eNOS in your blood vessel lining converts arginine into nitric oxide. NO signals smooth muscle in vessel walls to relax.
Blood vessels widen.
Vasodilation. Blood flow increases. Muscles get more oxygen and nutrients per heartbeat — and clear lactate and ammonia faster.
You feel the pump and the endurance.
Bigger, fuller muscle pumps during training. More reps before failure. Faster recovery between sets. Outside the gym: better blood pressure profile and cardiovascular support.
L-Arginine vs L-Citrulline
Which one wins?
| L-Arginine | L-Citrulline | |
|---|---|---|
| Bioavailability | Moderate — some lost in liver | Higher |
| Speed of effect | Direct — fast | Conversion takes 30–45 min |
| Cardiovascular research | Decades of studies | Newer body of evidence |
| Cost per serving | Lower | Slightly higher |
| Best stacked | Together — synergistic NO response | |
Tested. Traceable.
11215332000675
A quality bar we won't move.
Manufactured by Medizen Labs Pvt Ltd at an FSSAI-approved, GMP-certified facility in Bangalore. Independent third-party labs test every batch.
Heavy metals, microbial counts, adulterants, potency.
Licensed nutraceutical facility in Bangalore.
Two-step QR-code authenticity on every bottle.
Questions
The ones we get most.
Should I take arginine or citrulline?
If you can only choose one: citrulline (more bioavailable). If you can stack both: do that. They're synergistic — arginine works fast and direct, citrulline sustains the response longer. Most pre-workout formulas pair them for this reason.
How long until I feel it?
Pump effect within 30–45 minutes of taking pre-workout. Cardiovascular benefits compound over 4–6 weeks of consistent use.
Can I take it daily?
Yes. No tolerance build-up. Long-term studies show cardiovascular benefits with consistent use.
Side effects?
Generally well tolerated. Some users report mild GI discomfort at high doses. Avoid if on blood pressure or ED medication without doctor clearance. Avoid if pregnant or breastfeeding.
Vegetarian?
Yes. HPMC capsule shell. Arginine is fermentation-derived.
Is it FSSAI approved?
Yes. FSSAI License 11215332000675. GMP-certified facility by Medizen Labs in Bangalore.
Notify me when this comes back.
Demand outpaced supply. Next batch in 2–3 weeks. Use the “Notify me when back” button above.
Statements have not been evaluated by FSSAI for the diagnosis, treatment, cure, or prevention of any disease. Consult a qualified healthcare professional before starting any dietary supplement. Last updated June 2026.
Additional Information
Country of Origin: India
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