Your body runs on a 24-hour biological clock — the circadian rhythm — that governs cortisol production, metabolism, cognitive performance, and cellular repair. Circadian nutrition is the practice of timing nutritional support to match these predictable biological phases. The same nutrient taken at 7am vs. 9pm can produce meaningfully different results because the biochemical environment your body provides changes throughout the day. CircadianSync formulas are designed around this principle — not as a marketing angle, but as the foundational mechanism.

Morning Rise AM — Take with or shortly after breakfast, ideally within 60 minutes of waking. This aligns with the cortisol awakening response (CAR), when your body is primed for energy mobilization and cognitive activation.

Afternoon Focus Midday — Take with lunch or early afternoon, around 12–2pm. This targets the natural post-lunch circadian energy trough and supports sustained focus through the afternoon without stimulants that disrupt evening wind-down.

Evening Recovery PM — Take with dinner or 1–2 hours before bed. This aligns with the natural shift toward parasympathetic dominance and melatonin onset, supporting deep, restorative sleep.

Each ingredient in the CircadianSync system is supported by published human clinical research — not animal models, not in vitro studies. The 43 citations represent the body of peer-reviewed literature that informed ingredient selection, dosing, and timing for all three formulas. We cite human trials where efficacy was demonstrated at the doses we use. A full reference list is available on our Science page.

No — never. Every ingredient in every CircadianSync formula is disclosed with exact milligram amounts on the label. Proprietary blends are a common tactic used to underdose expensive ingredients while maintaining label appeal. We believe you have the right to know exactly what you're taking and at what dose. Full transparency is non-negotiable for us.

Yes — the three formulas are designed to be used as a complete system. Morning Rise AM, Afternoon Focus Midday, and Evening Recovery PM are formulated as a complementary, non-redundant stack. Ingredients were selected with full-day coverage in mind to eliminate overlap and ensure each formula works with the others. The System Pack bundles all three and is our recommended starting point.

Many customers notice an improvement in energy quality and sleep within the first 1–2 weeks of consistent daily use. The full system effect — where all three formulas are working in concert with your circadian rhythm — typically becomes apparent after 3–4 weeks. Circadian rhythm support is cumulative. Consistency is more important than any individual dose.

All CircadianSync formulas are manufactured in an FDA-registered, GMP-certified facility with third-party testing for purity, potency, and contaminants. As with any supplement, consult your physician before use if you are pregnant, nursing, taking prescription medications, or have a pre-existing health condition. The formulas do not contain stimulants, controlled substances, or banned athletic substances.

When you choose a subscription at checkout, you save 20% off the one-time purchase price on every order — automatically. Your first order ships immediately, then subsequent orders ship on the frequency you choose (every 30, 45, or 60 days). The discount applies to every renewal for as long as your subscription is active.

Yes — full control, any time. Log into your account to pause your subscription, skip an upcoming order, change your delivery frequency, update your shipping address, or cancel. No cancellation fees, no waiting periods, no forms to fill out. We use Recharge Subscriptions, which gives you a clean self-service portal to manage everything.

We offer free standard shipping on all System Pack orders. Individual product orders ship at a flat rate. Expedited shipping is available at checkout. Orders typically ship within 1–2 business days. You'll receive a tracking number by email once your order is dispatched.

We stand behind our formulas with a 30-day money-back guarantee. If you're not satisfied for any reason within 30 days of your purchase, contact us and we'll issue a full refund. No return shipment required. For subscription orders, the guarantee applies to the first order of each product. After that, you can cancel before your next order ships.