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Product

Serotonics®

A daily pill for a happier state of mind — less inner tension, a better mood, and more joy in everyday life. Nurture your brain chemistry with O-044® Serotonics, a new approach to feeling good again.

- 30-Day Money-Back Guarantee -

$89.99

/ 30-day supply

$89.99 USD every month1 month billing period30-day supply per delivery
The per-dose price above is $89.99 spread across a 30-day supply — your card is charged $89.99 USD every month. Subscription for a physical product, auto-renews until you cancel. Cancel any time, no fee. .
forbes-1

“A new category of living supplements.”

zdfheute

“A European wellness phenomenon.”

deloitte

“Second fastest-growing company in Central Europe.”

“A new category of living supplements.”

forbes-1

“Millions sold across Europe — and growing.”

czechcrunch

“With over 500,000 customers this early stage biotech is expanding to the U.S.”

cnn

“A European wellness phenomenon.”

zdfheute

“Second fastest-growing company in Central Europe.”

deloitte
Forbes

“A new approach to everyday wellbeing.”

Deloitte

“One of the fastest-growing companies in Europe.”

ZDFheute

“A wellness phenomenon.”

CzechCrunch

“Millions sold — and growing.”

CNN Prima

“With over 500,000 customers, this startup is expanding to the U.S.”

Forbes

“A new approach to everyday wellbeing.”

Deloitte

“One of the fastest-growing companies in Europe.”

ZDFheute

“A wellness phenomenon.”

CzechCrunch

“Millions sold — and growing.”

CNN Prima

“With over 500,000 customers, this startup is expanding to the U.S.”

Engineering Happiness

At tbn. labs we cultivate living bacteria to support the biology of a happier mind.

50,000+ people have made Serotonics® part of their daily routine.

You, too, can start feeling better again.

89%
of buyers order regularly

8 seconds

On average, every 8 seconds someone opens a bottle of tbn. products

>100,000

customers regularly purchase our products
89%
of buyers order regularly

8 seconds

On average, every 8 seconds someone opens a bottle of tbn. products

>100,000

customers regularly purchase our products
4.5
1259 Reviews
94%
of respondents would recommend this product
117
70
32
12
3

Questions?

We're here to help.

Most people notice initial changes within the first 1–2 weeks, though optimal results typically emerge after 4–6 weeks of consistent daily use. As long as you continue your daily intake, those beneficial Serotonics are doing their work inside to program, sustain, and enhance your mental health. Product is cultivated for consistent, long-term support rather than immediate stimulation or sedation.

Both — but it goes beyond surface-level stress. Serotonics® are designed for an overstimulated nervous system — when your mind doesn’t fully switch off, sleep isn’t fully restorative, and there’s a constant underlying tension. It works at the level where imbalance begins — before it becomes something clinical.

No, just happier. Serotonics® supports the gut–brain pathways behind mood, stress, and sleep — helping you feel calmer, lighter, and more emotionally balanced. Less tension. More ease. More joy.

Serotonics®

Monthly protocol

Serotonics subscription — $89.99 every month

This is a subscription for a physical product. You are charged $89.99 USD every month and it renews automatically until you cancel. Each payment covers one 30-day supply of Serotonics capsules, shipped to your address — about $3.00 per daily dose, though the amount charged to your card is $89.99 every month.

Subscription price
$89.99 USD
Billing period
Every month
Each delivery
30-day supply
Auto-renews
Yes, until cancelled

Auto-renewal

The subscription renews on its own. We do not ask you to confirm before each renewal, so the charge appears every month on the payment method you used at checkout. Your next billing date is shown in your account, and you can change it there.

Cancelling

Cancel at any time, for any reason, with no cancellation fee and no notice period — from your account under Subscriptions, or by emailing info@tbn.systems or calling +1 941 318 0025. Cancelling stops all future charges.

Refunds and returns

Every order is covered by a 30-day money-back guarantee. Tell us within 30 days of delivery and we refund you to your original payment method, normally within 5 business days of the return arriving. We pay return shipping, an opened jar still qualifies, and there is no restocking fee. We ask what was wrong with it — a sentence is enough. Full terms: Return & Refund Policy.

Changes to the price or billing period

If we change the price or how often you are billed, we email you at the address on your account before the change takes effect, stating the new amount and the date it starts. You can cancel before then and never pay the new price.

Fees

$89.99 USD is the whole recurring charge. Shipping within the United States is included, and there is no signup fee, membership fee or cancellation fee. Sales tax is added at checkout where applicable, based on your delivery address.