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30-Day Money Back Guarantee
That's how confident we are in your results. But if you're not thrilled, send it back and we'll refund your purchase.
The Triple-Action Liquid Formula That Transforms Fat Into All-Day Energy:
L-Carnitine Base - Acts as your cellular "shuttle," transporting stubborn fat directly to your mitochondria where it's burned for clean, sustained energy
Acetyl L-Carnitine - Crosses the blood-brain barrier to fuel mental clarity and laser focus, eliminating brain fog while your body burns fat
L-Carnitine Tartrate - Rapidly absorbs into muscle tissue to accelerate recovery and reduce post-workout soreness
Why Liquid Changes Everything: While pills sit in your stomach for hours, our liquid formula absorbs in minutes—delivering 3X faster results without the digestive breakdown that wastes your investment.
100% Stimulant-Free means no jitters, no crashes, no disrupted sleep. Just your body's natural fat-burning furnace working the way it was designed to—converting stored energy into the drive, focus, and transformation you've been missing.
Perfect for breaking through plateaus, powering through afternoon slumps, or finally achieving the lean physique that's been just out of reach.
Take 1-2 servings (15-30ml) daily on an empty stomach for optimal absorption.
Best Times to Take
Morning (Recommended):
Take 30 minutes before breakfast to kickstart fat metabolism and provide all-day energy without interfering with sleep.
Pre-Workout:
Take 20-30 minutes before training to enhance fat burning during exercise and improve focus.
Afternoon Energy:
Take during your natural energy dip (2-4pm) to avoid crashes and maintain metabolic momentum.
Pro Tips for Maximum Results
Week 1-2: Start with 1 serving daily to assess tolerance. Most users notice increased energy within 3-5 days.
Week 3+: Increase to 2 servings if desired—morning and pre-workout for accelerated results.
With Food: Can be taken with meals if you experience any stomach sensitivity, though absorption may be slightly reduced.
Hydration: Drink plenty of water throughout the day to support the fat transport process.
What to Expect
- Days 1-7: Increased energy and mental clarity
- Weeks 2-4: Enhanced workout performance and recovery
- Weeks 4-8: Visible fat loss acceleration and metabolic improvements
Storage
Store in a cool, dry place. Refrigeration after opening extends freshness and taste.
We're so confident that Metabolic Fire will transform your energy and ignite your fat-burning potential that we'll take all the risk. Try it for a full 8 weeks and experience the cellular transformation for yourself.
No hassles. No questions asked. No return shipping costs.
We aim to process and ship all orders within 1–3 business days. We operate from two fulfillment centers — most orders ship within 1–3 days, but depending on your location and inventory availability, some may take 4–9 business days to arrive.
Rest assured, we're working hard to get your order to you as quickly as possible.
Need to return something? No problem — just reach out to us and we’ll take care of it at: support@juvein.com

I'm 43 and thought my metabolism was just shot. Tried keto, intermittent fasting, expensive fat burners - nothing worked and I felt like garbage. This liquid carnitine brought my energy back without destroying my sleep like caffeine pills. Down 15 lbs in 2 months and actually have energy to play with my kids after work.
How It Works

1. Rapid Liquid Absorption
2. Cellular Fat Transport
3. Clean Energy Conversion

Liquid L-Carnitine 3000MG
Product Features Premium
Product Features Premium
Rapid Liquid Absorption Technology
Our advanced liquid formula bypasses the slow digestive process, delivering L-Carnitine directly to your bloodstream for maximum bioavailability—up to 3x faster than capsules or powders.
Stimulant-Free Clean Energy
Experience sustained, all-day energy without the jitters, crashes, or heart palpitations that come with caffeine-based fat burners. Your nervous system stays calm while your metabolism ignites.
Premium Purity Formula
Made with pharmaceutical-grade L-Carnitine in an FDA-registered facility. No fillers, no artificial stimulants, no fishy aftertaste—just pure cellular fuel for your body's natural fat-burning engine.
Cellular Metabolism Optimization
Unlike harsh fat burners that shock your system, our formula works with your body's natural processes to transport fatty acids into your mitochondria where they're converted to clean, usable energy.

Our Impact Statistics
Our Impact Statistics
Energy Transformation Rate
Customers report sustained, all-day energy without afternoon crashes within their first week
Metabolism Breakthrough
Users experience noticeable fat-burning acceleration after breaking through their previous plateau
Stimulant-Free Success
Customers successfully eliminated their dependence on caffeine and harsh fat burners
* Based on internal studies and customer feedback surveys.
HELPS WITH
Why ChooseUs?
Here's why we're the industry leader
Why ChooseUs?
Here's why we're the industry leader
Our Product
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Rapid Liquid Absorption
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100% Stimulant-Free Formula
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Cellular Metabolism Targeting
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No Fishy Aftertaste/Odor
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Customer Reviews


Liquid L-Carnitine 3000MG
$59.95 $80.00


Liquid L-Carnitine 3000MG
$59.95 $80.00


Liquid L-Carnitine 3000MG
$59.95 $80.00
Purchased on March 14th, 2025
Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOWMoney-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOWFrequently Asked Questions
Find answers to common questions about our products, shipping, returns, and more.
We understand your skepticism—the supplement industry is full of overhyped products. L-Carnitine isn't a new "miracle" ingredient; it's a naturally occurring compound your body already produces to transport fat for energy. Our liquid formula simply provides the optimal dose in the most absorbable form. That's why we offer a 62-day money-back guarantee—we're confident you'll feel the difference.
Absolutely not. Our formula is 100% stimulant-free—no caffeine, no harsh chemicals, no artificial energy boosters. You'll experience clean, sustained energy that works with your body's natural rhythms, not against them.
This is a rare side effect that can occur with lower-quality L-Carnitine or excessive doses. We use pharmaceutical-grade L-Carnitine in the optimal dosage to minimize this risk. The vast majority of our customers never experience this issue.
Liquid L-Carnitine absorbs up to 3x faster than capsules because it bypasses the slow digestive process. Pills often pass through your system partially undigested, wasting your money. Our liquid formula gets to work within minutes, not hours.
Most customers notice increased energy within the first week. For fat loss and metabolic improvements, expect to see noticeable changes after 4-6 weeks of consistent use. Remember, this isn't a quick fix—it's cellular recalibration that builds lasting results.
We offer a full 62-day money-back guarantee. If you're not completely satisfied, simply return the bottles (even if empty) for a full refund. No questions asked.
Latest Reviews


As a personal trainer, I've tried every fat burner on the market. Most are just caffeine bombs that crash your adrenals. This is different - clean energy that doesn't interfere with sleep. Several clients are seeing real results.

Finally found something that gives me energy without making me feel like I'm going to have a panic attack. No weird fishy aftertaste either! My afternoon crashes are completely gone.
Been stuck at the same weight for 8 months despite eating clean and working out 5x/week. Started this 3 weeks ago and finally seeing the scale move again! No jitters like my old pre-workout used to give me. This actually WORKS.