Rarebird

Active

Elevating mental health to be a part of your daily coffee ritual.

Summer 2020Founded 20205 peopleSan Leandro, CA, USA

www.rarebird.coffee ↗LinkedIn ↗See on the Idea Map Healthcare momentum

About

We are making coffee for caffeine sensitive people. We do this by producing the world's first caffeine replacement, paraxanthine. It's better than caffeine at waking you up and causes fewer side effects, like anxiety and jitteriness.

From their website

as of Jun 7, 2026www.rarebird.coffee ↗

SaaSSubscription

Rarebird offers Px Coffee, a line of coffee powered by paraxanthine (Px) instead of caffeine to provide smoother energy, clearer focus, and sleep-friendly energy. The product is positioned as a better energy alternative to traditional caffeine-based coffee, with science-backed claims and award recognition.

Px Coffee replaces caffeine with paraxanthine (Px) through a patented Px infusion process, delivering smooth, steady energy and alertness without jitters, crashes, or sleep disruption. The product lines include whole bean/ground coffee, ready-to-drink Px cold brew and oatmilk lattes, instant Px coffee, and Px-powered coffee pods. The coffee is described as decaffeinated in some descriptions, infused with 60mg of Px per serving, and marketed as supporting clearer focus and better sleep compared to traditional caffeine coffee.

Who it’s for: Coffee drinkers seeking steady energy and improved focus without jitters or sleep disruption; individuals sensitive to caffeine; consumers interested in science-backed, sleep-friendly energy alternatives.

Features

Px-infused coffee delivering smooth energy
Options: whole bean, ground, ready-to-drink, instant, and pods
Claims of improved focus with no jitters or crashes
Sleep-friendly energy profile
Patented Px infusion technology
Award-winning product recognized by Specialty Coffee Association
Sustainably sourced, small-batch roasting

Award-winning product, NSF-backed claims, multiple product formats (coffee varieties, ready-to-drink, pods), ongoing marketing and e-commerce presence

Founders · 1

Jeffrey DietrichFounder

Berkeley

Jeffrey Dietrich received his Ph.D. in BioEngineering from UC-Berkeley working in Jay Keasling’s lab to develop new biomanufacturing technologies. Jeffrey then co-founded and was CTO at Lygos (YC W16), which raised over $40MM in equity financing and $10MM in Federal awards to commercialize industrial biochemicals. He has also served on advisory boards for Department of Energy- and National Science Foundation-backed institutions and is an inventor on 17 patents or patent applications.

LinkedIn ↗