Topic hub
Safety Alerts
Interaction and spacing guides for supplement users who need fewer collisions inside complex daily stacks.
Content system
Each guide connects evidence, tools, and stack execution
Evidence post
Mechanism and cited research
Tool
The repeatable decision aid
Monograph
Ingredient-specific context
Safety Alerts
Calcium and iron do not belong in the same supplement stack slot
Calcium can blunt non-heme iron absorption when they arrive together. Here is the evidence-based spacing rule for multivitamins, mineral stacks, and iron support.
Safety Alerts
Your magnesium might be blocking your antibiotic: the timing rule most doctors don't mention
When magnesium and certain antibiotics meet in your gut, the antibiotic can lose most of its absorption. Here's what the research shows — and the spacing rule that fixes it.