How quickly do Caffeine + L-Theanine capsules take effect?

You’ll typically feel the effects within 20-30 minutes. The calm, focused energy usually lasts for about 4-6 hours.

Will Caffeine + L-Theanine capsules affect my sleep?

They can if taken too close to bedtime. To avoid sleep disruptions, don’t take capsules within 6-8 hours of going to bed.

Can I use these capsules daily?

Yes, it's safe for daily use, as long as you stick to the recommended dosage (1-2 capsules per day). Avoid exceeding this amount to prevent potential caffeine-related side effects.

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Caffeine L-Theanine Capsules

Clean energy, laser focus, and calm alertness — without the crash.

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Caffeine L-Theanine Capsules

30ct

125.00 AED

Sharper Attention

Combinations of L-theanine (~100 mg) and caffeine (~40 mg) improved speed and accuracy on demanding attention tasks compared with placebo in healthy adults. PubMed ↗
Calm Focus

Caffeine helps you feel alert while L-theanine helps you stay calm. PubMed ↗
Faster Reactions

People taking caffeine with L-theanine reacted a bit faster on tests. PubMed ↗
Steady Focus

L-theanine–caffeine blends improved sustained attention and impulse control in challenging tasks, with fMRI data showing reduced activity in brain regions linked to mind-wandering. PubMed ↗
Better Accuracy

Combo helped reduce mistakes on attention-heavy tasks. PubMed ↗
Dose Tolerance

Across multiple trials in healthy adults, theanine–caffeine combinations at common supplemental doses were well tolerated with no serious adverse events reported. PubMed ↗

Immediate mental lift
Calm, steady focus
Supports attention & accuracy
Nature’s duo from green tea

Caffeine wakes you up fast, but it can also bring jitters and an energy crash. L-Theanine, an amino acid found in tea leaves, smooths out those side effects by promoting calm, centered focus. Combined, they create a natural synergy—like the balance found in green tea—that delivers clean, lasting energy with sharper focus and fewer downsides.

Caffeine blocks adenosine, the neurotransmitter that makes you feel tired, and boosts alertness and reaction time. L-Theanine promotes alpha brainwave activity, linked to relaxed attention, and modulates excitatory signaling. Together, they balance stimulation with calm for sharper performance.

Dose: 1 capsule, 1–2 times daily as needed
When: 30–60 minutes before focus-intensive work or study
Tip: Avoid late-day use to protect sleep

General safety: Not for children. Avoid during pregnancy or nursing. If you have a medical condition or take medication, consult your healthcare professional before use. Do not exceed the recommended serving. Store in a cool, dry place.

1. How quickly will I feel it?
Most people notice effects within 20–30 minutes, lasting 4–6 hours.

2. Will it disrupt my sleep?
It can if taken too close to bedtime. Leave 6–8 hours before sleep.

3. Is it safe to use daily?
Yes, it’s safe at recommended doses (1–2 capsules/day). Just keep track of your total caffeine intake.

4. Can I stack it with other nootropics?
Absolutely—many pair it with Alpha-GPC or CDP-Choline for learning, or Lion’s Mane for long-term cognitive support.

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Caffeine L-Theanine Capsules

Caffeine + L‑Theanine — Evidence Snapshot

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