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Caffeine 2.0 + L-Theanine Supplement (d9-Caffeine)

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Caffeine 2.0 + L-Theanine side A bottle showing benefits, warnings, Deura9 information, and barcode on a sage green stone pedestal.

Caffeine 2.0 + L-Theanine Supplement Facts bottle on a sage green stone pedestal: 22.5 mg Deura9 d9-caffeine and 50 mg L-theanine per capsule, 30 servings.

Caffeine 2.0 + L-Theanine formula overview on a sage green background: 22.5 mg Deura9 d9-caffeine and 50 mg L-theanine per capsule, 30 capsules.

Caffeine 2.0 + L-Theanine energy and focus overview on a sage green background with Deura9 d9-caffeine, 50 mg L-theanine, the product bottle, and an FDA disclaimer.

A smiling adult woman holds a capsule and a glass of water at a sunlit desk in a room with sage green walls and artwork.

Caffeine 2.0 + L-Theanine Supplement (d9-Caffeine)

Name: Caffeine 2.0 + L-Theanine Supplement (d9-Caffeine)
Brand: Vita Bloom Labs
SKU: D9-LT-1
Price: 49.99 USD
Availability: InStock

$49.99

Size: 1 Bottle (30 capsules)

1 Bottle $49.99 $49.99 each 2 Bottles $94 $47.00 each 3 Bottles $138 $46.00 each 4 Bottles $175 $43.75 each 5 Bottles $212 $42.40 each 6 Bottles $249 $41.50 each

Free standard U.S. shipping. Orders process in 1–2 business days; standard delivery is typically 3 business days after shipping. Estimates are not guaranteed.

Shipping & international delivery · 30-day returns, conditions apply

Energy & focus

A caffeine and L-theanine supplement built on patented Deura9® d9-caffeine, for calm, focused energy.* Each capsule contains 22.5 mg Deura9® d9-caffeine plus 50 mg L-theanine. 30 capsules per bottle.

Formula at a glance

Amount: 22.5 mg d9-caffeine + 50 mg L-theanine
Serving size: 1 capsule
In the bottle: 30 capsules · 30 servings

Benefits

• Lasts 3x longer than ordinary caffeine.*
• Rapid onset with extended duration.*
• Smoother energy. Less jitters. No crash.*
• 50 mg L-theanine for calm, focused energy.*
• Supports sustained focus and mental clarity.*

How it works

Ordinary caffeine is cleared quickly by the liver, which is why the lift fades within a few hours and often ends in a crash. d9-caffeine is caffeine with nine hydrogen atoms replaced by deuterium, a stable, naturally occurring form of hydrogen. The stronger deuterium bonds slow the enzyme that breaks caffeine down, so the same molecule stays active far longer. The result is a smaller dose that works harder and lasts longer, with a smoother rise and a gentler landing. Each capsule pairs 22.5 mg Deura9® d9-caffeine with 50 mg L-theanine.

Who it's for

• Long work days, study sessions, and shifts where one coffee never gets you to the finish
• People who want steady energy without re-dosing caffeine through the afternoon
• Those who get jitters or a crash from ordinary caffeine but still want the focus

In each capsule

• 22.5 mg Deura9® d9-Caffeine
• 50 mg L-Theanine
• Vegetable cellulose capsule
• Microcrystalline cellulose
• Magnesium stearate, less than 2%

How to take

Take 1 to 4 capsules per day as needed, with or without food. Do not exceed 90mg of d9-caffeine per day. Start with one capsule to gauge your response, since d9-caffeine is more potent per milligram and lasts longer than ordinary caffeine. Avoid late-day doses.

Not recommended for children, pregnant or breastfeeding individuals, or people who are sensitive to caffeine. Deura9® is a registered trademark of Lennham Pharmaceuticals, Inc. under exclusive license to d9 Designs Inc. This product is covered by multiple issued and pending patents.

Product facts

• Count: 30 capsules, 30 servings
• Serving size: 1 capsule
• Per serving: 22.5 mg Deura9® d9-caffeine + 50 mg L-theanine
• Capsule: vegetarian cellulose, unflavored
• Other ingredients: microcrystalline cellulose, magnesium stearate (less than 2%)
• Diet: vegan, gluten-free
• Stimulant content: 22.5 mg d9-caffeine per capsule, a deuterated form of caffeine that the liver clears more slowly. Count it as caffeine when tracking daily stimulant intake.
• Quality: formulated in the USA in a GMP-certified facility.
• Suggested use: 1 to 4 capsules per day as needed, with or without food. Do not exceed 90 mg of d9-caffeine (4 capsules) per day. Start with 1 capsule. Avoid late-day doses.
• Not for: children, pregnant or breastfeeding individuals, or people sensitive to caffeine
• Availability: in stock.
• UPC: 884400849427

Learn more Read the Caffeine 2.0 + L-Theanine protocol guide

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Learn more

All L-Theanine articles

Vita Bloom Labs Caffeine 2.0 + L-Theanine front bottle on a sage green stone pedestal with a sage backdrop and soft leaf shadows.

Caffeine 2.0 + L-Theanine Supplement (d9-Caffeine)

$49.99

The formula, at a glance

Longer-lasting caffeine, paired with L-theanine.

Each capsule pairs 22.5 mg of Deura9® d9-caffeine with 50 mg of L-theanine. Start with one capsule and stay within the daily limit on the label.

22.5 mg Deura9® d9-caffeine per capsule
50 mg L-theanine per capsule
30 capsules per bottle

Read Supplement Facts

Inside the formula

Why pair d9-caffeine with L-theanine.

d9-caffeine is caffeine rebuilt with deuterium so your liver clears it more slowly. L-theanine is an amino acid found in tea leaves, and the pairing is a common choice for calm, focused energy.* It still counts as caffeine toward your daily intake.

Explore the research

At a glance

Lasts 3x longer than ordinary caffeine. One dose carries you through the day.*
Rapid onset with extended duration. Kicks in fast, then holds steady.*
Smoother energy. Less jitters. No crash.*
50 mg L-theanine for calm, focused energy and mental clarity.*

Original label information.

Individual responses vary. Ingredient research and customer experiences do not guarantee the same outcome for every person.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Before you choose

Your questions, answered.

Know the serving, understand the ingredient, and decide what fits your routine.

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What does the L-theanine add?

Each capsule pairs 22.5 mg of Deura9® d9-caffeine with 50 mg of L-theanine, an amino acid found in tea leaves, for calm, focused energy.* The caffeine dose and daily limit are the same as Caffeine 2.0.

How many capsules can I take, and when?

Start with one capsule. Take 1 to 4 capsules per day as needed, with or without food, and never more than 90 mg of d9-caffeine (4 capsules) a day. Take your last capsule at least 8 hours before bed.

What about coffee and other energy formulas?

Count them all together. Each capsule has 22.5 mg of d9-caffeine, so add it to any coffee, tea, energy drinks or other energy formulas when you track your daily caffeine, and take your last capsule at least 8 hours before bed. If you have questions about your own total, ask your physician.

Evidence in context

A closer look at the research.

Explore the research library →

Randomized human crossover trial: blood levels

d9-caffeine vs caffeine: how long it stays in the blood

Sherman et al. · Regulatory Toxicology and Pharmacology · 2022

Study design: 20 healthy adults · one dose of caffeine (50 mg or 250 mg) or a matched amount of d9-caffeine, taken as a drink · blood sampled for 48 hours
What it found: d9-caffeine reached a somewhat higher peak and about 4 to 5 times the total blood exposure of regular caffeine, with much lower levels of caffeine’s active breakdown products. Both were well tolerated.

Read the publication ↗

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