KUR

It depends on the formula. Magnesium and Sleep Support are felt within the first few nights for most people — magnesium's calming effect on the nervous system is relatively fast-acting. Ashwagandha is a slower-build adaptogen — clinical studies show the most significant cortisol and stress reduction after 4–6 weeks of consistent daily use. Berberine typically shows metabolic effects within 2–4 weeks. The key word across all four is consistent — supplements work cumulatively, not acutely.

Most supplement brands are built around what sells on a label — trending ingredients at token doses, proprietary blends that hide how little of each ingredient is actually present. KUR is built around three things: clinical dosing, bioavailability, and ingredient synergy. Our Ashwagandha formula uses KSM-66® — the most clinically studied ashwagandha extract on the market, standardized to 5% withanolides. Our Magnesium uses the glycinate form specifically because it's the most bioavailable and the least likely to cause digestive issues. Every choice has a reason.

Yes — KUR formulas are designed to complement each other. A common stack: Magnesium Glycinate and Sleep Support taken together before bed for synergistic sleep and recovery support. Ashwagandha taken in the morning for daily stress resilience. Berberine taken with meals for metabolic support. None of our formulas contain ingredients that conflict with one another. If you're on prescription medication or managing a health condition, consult your doctor before stacking any supplements.

KUR formulas are manufactured in the USA in an FDA-registered facility and contain no artificial fillers, dyes, or unnecessary additives. All formulas use vegetarian capsules. Side effects are uncommon but worth knowing: high-dose magnesium can cause loose stools in some people — if this happens, reduce to one capsule and build up. Berberine can interact with blood sugar medications — if you're diabetic or pre-diabetic, consult your doctor. Ashwagandha is not recommended during pregnancy. If you have a known medical condition or take prescription medication, always check with your healthcare provider first.

All KUR orders are fulfilled and shipped within the United States. Standard delivery is 5–7 business days with free shipping on qualifying orders. You'll receive a tracking number as soon as your order ships. We don't source from overseas fulfillment centers — everything ships domestic so there are no extended wait times or customs delays.

Every KUR order is backed by our 60-Day Money-Back Guarantee. If you're not satisfied for any reason, return it within 60 days for a full refund — no questions asked. We recommend giving each formula at least 30 days of consistent use before evaluating — adaptogens and minerals work cumulatively and the most meaningful results typically appear in weeks 3–6. But if KUR isn't right for you, we'll make it right.