The world's first multivitamin built for fasting.

For the 11am hunger wall.

Six healthy ingredients crush hunger, sustain energy, and keep your mind sharp through your longest stretches. Made in the USA, third-party tested.

Try Core — $39

A functional, science-driven stack designed for fasting physiology.

L-Theanine

Elevate mental clarity and calmness

L-Tyrosine

Catecholamines for cognitive flexibility

Satiereal® Saffron

Reduce snacking urges

SHR-5 Rhodiola

Adaptogenic stress response

Chromium

Support insulin sensitivity and help reduce hunger spikes

Thiamine

Help prevent re-feeding syndrome

Engineered for Fasting.

One capsule system. A benefit for every stretch of the fasting day.

Hour 0–4
Metabolic transition

Ease into the fast

Your last meal winds down and insulin begins to fall, starting the shift away from sugar for fuel.

ThiamineChromium
Hour 4–8
The focus window

Calm, clear focus

With sugar off the table, your brain settles onto a steadier fuel — the window where calm, sharp focus takes hold.

L-TheanineL-Tyrosine
Hour 8–14
Peak cravings

Stay ahead of the cravings

Hunger and cravings tend to peak here — often the hardest stretch of the fast.

Satiereal® SaffronChromium
Hour 14–18
Fatigue

Adaptive Stress Support

As the fast deepens, cortisol and mental fatigue can climb, and focus gets harder to hold.

Rhodiola SHR-5L-Tyrosine
Hour 18–24+
The long haul

Sustained Energy

Into the deepest part of your fast — where staying steady, resilient, and in control matters most.

Rhodiola SHR-5Satiereal® Saffron

Educational visualization of fasting phases and ingredient roles.

Built on published clinical research

We formulate with facts.

Every active in Core was chosen for the human trials behind it. We use Satiereal®, the standardized saffron extract studied in published RCTs for satiety and reduced snacking, and SHR-5 Rhodiola, the specific extract used in the clinical literature on cortisol and cognitive performance. Clinical-grade forms at evidence-based doses.

Try Core — $39
  • MADE IN THE USA

    Proudly crafted in the USA with ultra-premium ingredients you can trust.

  • FREE 2-4 DAY SHIPPING

    Free 2-4 day USA shipping with tracking on all orders. 

  • NO HASSLE 30 DAY RETURNS

    No hassle 30 day returns on unopened packages.

  • THIRD-PARTY TESTED

    Produced in a FDA-registered, GMP-certified facility for purity and safety.