L-Citrulline 1000mg 60 Veg Capsules — Nitric Oxide Booster for Pumps, Endurance & Recovery (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-Citrulline delivers 1000mg of pure L-Citrulline per 2-capsule serving. Your kidneys convert it to L-Arginine, which produces nitric oxide — the molecule that widens blood vessels so more oxygen and nutrients reach working muscles. Result: stronger pumps, more reps before failure, faster recovery, no stimulants. 60 vegetarian capsules per bottle. Manufactured in Bangalore at an FSSAI-approved (License 11215332000675), GMP-certified facility by Medizen Labs.
The science
How L-Citrulline works inside you.
Citrulline isn't a stimulant. It doesn't fire you up. It rebuilds the road your blood travels on.
You swallow 2 capsules.
Each delivers 500mg of fermentation-derived L-Citrulline inside a vegetarian HPMC shell. No fillers, no binders. The amino acid enters the bloodstream from the small intestine.
Your kidneys convert it to L-Arginine.
Unlike supplemental L-Arginine — which the gut and liver break down before it reaches the bloodstream — L-Citrulline bypasses first-pass metabolism. Plasma arginine rises more predictably.
L-Arginine becomes nitric oxide.
In endothelial cells lining your blood vessels, the enzyme eNOS converts L-Arginine to nitric oxide — a vasodilator. Vessel walls relax. Blood flows faster and farther.
More oxygen reaches your muscles.
Working muscle gets more oxygen per beat. Waste clears faster. Result: fuller pumps, deeper rep ranges before failure, faster bounce-back.
Tested. Traceable.
What we tested for — and what isn't there.
India's supplement category has an authenticity problem. Our answer is paperwork.
11215332000675
Side by side
How we compare.
| Zenith | Generic India | Imported | |
|---|---|---|---|
| Dose / serving | 1000mg | 500–800mg | 1000–2000mg |
| FSSAI shown | ✓ | Sometimes | No |
| Lab tested every batch | ✓ | Rarely | Often |
| QR authenticity check | ✓ Two-step | No | No |
| Vegetarian capsule | ✓ | Sometimes | Gelatin |
| ₹ per serving | ₹15.76 | ₹10–20 | ₹40–80 |
| Ships in India | 3–4 days | 3–7 days | 2–4 weeks |
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, label-stated potency. Every batch.
A licensed nutraceutical facility in Bangalore operated to GMP standards.
Two-step QR-code authenticity on every bottle. Scan front, scratch, scan inside. Both must match.
Questions
The ones we get most.
When will I feel something?
Most users feel sharper pumps and stamina within 5–7 days. Cardiovascular and recovery benefits compound over 4–6 weeks. Citrulline isn't a stimulant. Stay consistent.
How much should I take per day?
Clinical range is 3–6g. Zenith L-Citrulline delivers 1000mg per 2-capsule serving. Most gym-goers take 4 capsules daily — pre-workout + breakfast.
L-Citrulline vs L-Arginine — which?
L-Citrulline. More bioavailable. L-Arginine breaks down in the gut/liver before reaching the bloodstream. Citrulline bypasses that.
Can I stack with caffeine or pre-workout?
Yes. Citrulline is stimulant-free and stacks cleanly with caffeine, beta-alanine, creatine, and BCAAs.
Is it FSSAI approved?
Yes. FSSAI License No. 11215332000675. Manufactured at a GMP-certified facility by Medizen Labs in Bangalore. Third-party lab tested every batch.
Side effects?
Well tolerated. Mild side effects can include heartburn or low blood pressure in sensitive individuals. Consult a doctor if on BP or ED medication. Avoid if pregnant or breastfeeding.
Vegetarian / Jain-friendly?
Yes. HPMC capsule shell (plant-derived, not gelatin). Citrulline is fermentation-derived. 100% vegetarian.
How do I verify the bottle is authentic?
Two-step QR-code verification on every bottle. Scan the front QR, scratch the silver patch inside, scan the hidden code. Both must match on our verification page.
Notify me when this comes back.
Demand outpaced supply. Next batch leaves Bangalore in 2–3 weeks. Use the “Notify me when back” button above.
Try BCAA with 1g L-Citrulline →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
You May Also Like
Recently Viewed
IndiaVery Disheartening
I came to know you have discontinued producing Pine Bark and L cutrlin and i was very disturbed
IndiaProduct to consider
Great product. Take 2 in the morning without food and within 15 minutes have a clear mind good focus and ready for the day! Think You'll see best results on those who are over 40.
Indiaenergizer
I love this stuff! boosts my energy & elevates my mood significantly. I am going to start using it in the late afternoon also. incidentally, who is losing weight also & I need all the energy I can get!!