L-theanine with caffeine
Results suggest the two combined improve performance on cognitively demanding tasks.
Oral energy strips · Cranberry
Energy that dissolves on your tongue.
Each 290 mg strip has 50 mg of green tea caffeine, 30 mg of L‑theanine and 1000 mcg of B12, and it absorbs in your mouth. There's no sugar, and a month of strips fits in one 64 g tin.
VeganGluten-freeLactose-freeNon-GMONo fillersHormone-freeHalal
Compared
Coffee lifts you up, then drops you.
An energy drink can carry up to 54 g of sugar in one can. Coffee needs a cup, and gummies have to get through your stomach first. manna is a thin film you put on your tongue.
Sugar per serving
Grams. Lower is better.
Ranges are typical for each product type and vary by brand and size.
| manna | Double espresso | Energy drink | Caffeine gummies | |
|---|---|---|---|---|
| Sugar | 0 g | 0 g, black | Up to 54 g | 2 to 4 g |
| Caffeine | 50 mg, exact | 80 to 200 mg | 80 to 300 mg | 40 to 100 mg |
| L-theanine | 30 mg | None | Rarely | Sometimes |
| Goes through your stomach | No, it absorbs in the mouth | Yes | Yes | Yes |
| What you carry | A 64 g tin | A cup | A 500 ml can | A bottle |
| Cost per serving | $0.83 | $3 to $6 | $2.50 to $4 | $1 to $2 |
How it works
Open a sachet, put the strip on your tongue.
1. Peel the sachet
Each strip comes in its own sealed sachet, so there's nothing to mix or measure.
2. Let it dissolve
The film melts in seconds. It tastes like cranberry, a little tart, and has no sugar.
3. Get on with your day
The ingredients absorb in your mouth instead of waiting on digestion. Take one strip a day at most.
Inside the tin
A month of strips in a 64 g metal tin.
- 01Printed lid
Dose, flavor and serving count are on the top of every tin.
- 02Metal tin
It fits in a pocket, a gym bag or a glovebox.
- 0330 sealed sachets
One strip each, so the rest stay sealed until you need them.
- 04One 290 mg strip
Cranberry, sugar-free, and it dissolves on your tongue.
The formula
Three active ingredients, with the exact dose of each.
There's no proprietary blend. Here is every active ingredient and how much of it is in one strip.
50 mg
Green tea caffeine
About half a double espresso. In one study, caffeine supplementation had a significant ergogenic effect on muscular endurance and maximal bench press strength.
30 mg
L-theanine
An amino acid found in green tea. It's studied for anti-stress effects through inhibition of cortical neuron excitation, and it's often paired with caffeine.
1000 mcg
Vitamin B12 (methylcobalamin)
B12 plays a role in turning carbohydrates into glucose, the fuel your body uses for energy. This is the methylcobalamin form.
290 mg
What one whole strip weighs
Pullulan makes the film, mannitol and cellulose give it body, malic acid and cranberry flavor add the taste, and erythritol and steviol glycosides sweeten it without sugar.
Research
Why caffeine and L-theanine are paired.
These are summaries of published research on the ingredients in this formula, not studies of the finished product.
L-theanine and stress
Oral L-theanine may produce anti-stress effects by inhibiting the excitation of cortical neurons.
Caffeine and strength
Caffeine supplementation showed a significant ergogenic effect on muscular endurance and maximal bench press strength.
Caffeine in team sport
The study suggests caffeine can be a supplementation strategy for female athletes in team sports.
Caffeine and attention
A low to moderate dose before or during exercise may improve self-reported energy, mood, attention and reaction time.
L-theanine and mental health
Findings suggest it may support mental health in people with stress-related complaints and cognitive impairment.
When
Six times a strip comes in handy.
06:40
Before the gym
A pre-workout without 300 mg of caffeine or a shaker bottle to wash.
15:10
The afternoon dip
When a third coffee would only make you jittery.
21:30
Night drive
It fits in the glovebox and can't spill.
08:55
Before an exam
Caffeine without a sugar spike.
12:00
Airport layover
It isn't a liquid, so it goes through security with you.
14:20
After lunch
For the slump that follows a big meal.
Pricing
One tin lasts a month. More tins cost less per strip.
Each tin has 30 strips, one for each day.
30-day guarantee
Use a whole tin. If you don't feel a difference within 30 days, message us and we'll refund you. Refund policy
Reviews
From people who keep a tin in their pocket.
Sample copy written for this page, not real customer feedback. Replace these with verified reviews in the theme editor.
★★★★★
"I train at 6 a.m. and powder pre-workout always sat badly. One strip on the way to the gym, and by the time I'm warming up I'm there. No upset stomach and no shaker to wash."
Marco R. · Austin, TX
★★★★★
"The 3 p.m. coffee run was costing me $4 and an hour of sleep. A tin lives in my drawer now. I get the same lift without the jitters, and I still fall asleep at eleven."
Priya N. · Chicago, IL
★★★★★
"Bought it for long drives. It's the only caffeine I can take at a gas station without carrying a drink. The cranberry is tart, not sweet, which I wasn't expecting."
Dylan S. · Denver, CO
★★★★☆
"Works as described and the tin really is pocket-sized. Four stars only because one strip a day is the limit, and on deadline weeks I'd want two."
Hannah B. · Portland, OR
★★★★★
"Flew JFK to Seattle with these in my pocket. Nothing liquid, so security didn't ask, and the red-eye didn't flatten me. Ordered three more tins when I landed."
Nate W. · Brooklyn, NY
★★★★★
"I'm sensitive to caffeine, and 50 mg with theanine is the first dose that doesn't make my hands shake. It dissolves before I've finished reading the sachet."
Ellie T. · Nashville, TN
FAQ
Questions people ask before buying.
How much caffeine is in one strip?
50 mg, about half a double espresso. It's a moderate dose. Take no more than one strip a day.
How fast does it work?
The film dissolves in seconds and the ingredients absorb in your mouth, so they don't wait on digestion in your stomach. The combination of caffeine and amino acids increases alertness right away.*
What does it taste like?
Cranberry. It's tart and clean, without a syrupy aftertaste, and it's sweetened with erythritol and steviol glycosides, so there's 0 g of sugar.
Will I crash?
The formula pairs caffeine with 30 mg of L-theanine to give you steady energy for several hours, instead of the spike and drop you get from a sugary drink.*
Does it fit my diet?
It's vegan, gluten-free, lactose-free, non-GMO, corn-free, hormone-free and halal, with no fillers.
Who shouldn't take it?
If you're pregnant or nursing, under 18, or have a known medical condition, talk to a doctor before using this or any dietary supplement. Don't exceed the recommended dose.
How do I store it?
Keep it somewhere cool and dry. Each strip is sealed on its own, so the tin travels fine in a bag. Don't use it if the safety seal is damaged or missing.
How long does shipping take?
We ship within the US by USPS. Standard shipping takes 2 to 4 business days and costs $5.95, or nothing on orders of $80 or more, so the 3-tin and 6-tin packs ship free. Express (USPS Priority) takes 1 to 3 business days. Shipping details
Energy shouldn't weigh 500 ml.
30 cranberry strips per tin, no sugar, one a day.
Choose your pack, from $24.83 a tin30-day guarantee
*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. Keep out of reach of children. Do not exceed the recommended dose. The actual product may vary slightly from the images.