I Built an Embeddable Supplement Interaction Checker — Here's What Surprised Me

The Problem Nobody Talks About There are hundreds of drug interaction checkers online. WebMD has one. Drugs.com has one. Medscape has one. They all answer the same question: "Will this pill interact with that pill?" But none of them answer the question millions of people actually need answered: "Are the 5 supplements I take every morning fighting each other?" I take vitamin D, magnesium, omega-3, and zinc. Nothing exotic. But here's what I didn't know: calcium inhibits iron absorption by up to 60% . And fiber reduces iron absorption significantly through phytate binding. And caffeine blocks iron absorption by 39% . So if you're taking an iron supplement with your morning coffee and a fiber-fortified breakfast — you might as well be throwing that iron pill in the trash. What I Built A Supplement Stack Safety Checker that focuses exclusively on supplement-supplement interactions — not drug interactions, not food interactions. Just the supplements you actually take. The numbers: 78 supple