Track every supplement and medication with real pharmacokinetic models. Not just timers — actual absorption curves, drug interactions, and steady-state projections backed by published research.
Also available on Android (APK) and iOS — free, no account needed
Watch levels rise after a dose and decay over time. Not a countdown — actual pharmacokinetic math.
Warnings for dangerous combos, absorption conflicts, and depletions surface automatically.
No account, no cloud, no tracking. Data lives on your device and nowhere else.
Every drug links to peer-reviewed research with plain-language summaries you can actually read.
Pick from 300+ supplements and medications, or create your own with custom half-life data.
One tap records a dose. Bundles let you track a whole multivitamin as a single action.
See real-time curves modeling absorption, metabolism, and elimination for everything you take.
Dose reminders, interaction warnings, and optional Health Connect / Apple Health sync.
Most trackers count pills. Serum models what happens after you swallow them.
First-order absorption via the Bateman equation with calibrated absorption rates, elimination rates, and oral bioavailability for each drug. Buspirone at 4%, curcumin at 5%, propranolol at 25%.
Drugs like fluoxetine, codeine, and amitriptyline produce active metabolites. Serum models the full parent-to-metabolite conversion cascade with independent half-lives.
Testosterone esters, lisdexamfetamine, simvastatin — prodrugs are modeled with their conversion mechanics, not just the active form.
See where your levels are heading with regular dosing. Tracks time to steady state, peak, and trough. Multiple sources (standalone + bundles) are combined.
Configure loading phases, custom frequencies, on/off cycling, and as-needed PRN dosing. Projections adjust accordingly.
Track a multivitamin as one dose — each ingredient gets its own curve. Overlap detection flags when the same compound comes from multiple sources.
Serum is fully offline. No accounts, no cloud sync, no analytics, no telemetry. Your supplement regimen, dose history, and settings are stored on your device and are never transmitted anywhere.
Optional Health Connect (Android) and Apple Health (iOS) integration syncs dose logs to your health platform when you enable it.
Free and works in your browser. Install as a PWA for offline use, or get the native Android or iOS app for notifications and Health sync.
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