Why we took the caffeine out
Most people don't have an energy problem. They have a crash problem and the fix isn't a stronger coffee.
We get asked this more than anything else. If the point is focus, why leave out the one ingredient everybody already reaches for?
The honest answer is that caffeine works, and that's the problem. It borrows against attention you haven't earned yet, and the repayment lands somewhere around three in the afternoon.
What the crash actually is
Caffeine doesn't create alertness. Adenosine is the molecule that builds up across your waking hours and tells you you're tired; caffeine blocks the receptor it binds to. The adenosine keeps accumulating behind the block. When the caffeine clears, all of it arrives at once.
For most people that's tolerable once. Repeated daily for years, the baseline shifts. Receptor density adjusts upward, and the first cup stops being a lift and starts being maintenance.
By the time someone tells us they need three coffees to feel normal, coffee isn't giving them anything. It's holding them level.
"our customer interviews, March 2026"
What we put in instead
Deep Focus Brew Original carries 3,000mg of mushroom extract per serving, all as 10:1 extracts. Lion's Mane at 1,500mg, Cordyceps at 1,000mg, Maitake and Royal Sun at 250mg each.
Alongside that sit 950mg of supporting actives: Citicoline at 250mg, Bacopa Monnieri at 200mg, and 500mg of coconut MCT. Total actives come to 3,950mg per serving.
None of those work the way caffeine works. There's no receptor block, so there's nothing to clear, and nothing accumulating behind it while you work.
What this does not mean
Caffeine-free doesn't mean effect-free, and it doesn't mean instant either. Caffeine gives you a sharp, unmistakable signal inside twenty minutes. Nothing in our formula does that, and we'd be lying if we implied otherwise.
What you're trading is the spike for a flatter line. If you specifically want the spike, we're not the product.
What to expect in week one
We'd rather be straight with you: the first three or four days are usually worse, not better. If you're coming off a real caffeine habit, you're not just adding something. You're removing something your body has adjusted around, and that adjustment takes about a week to unwind.
Headaches on day two and three are common. They pass.
Most people describe the second week as the point it stops feeling like a substitution and starts feeling like a preference.
Ellis Achim is the founder of Bioflow. He writes about what we're building, what we get wrong, and what the research actually supports.
Bioflow team April 2026
The Journal, every other Friday
What we're building, and what the research actually says.