Doseline

Learn

How the numbers work, where they come from, and why you can trust them. No hand-waving. No "consult your doctor" dead-ends.

Database

Medication Database

Search medications with pharmacokinetic data, half-lives, dosing ranges, and cited sources. Covering GLP-1 receptor agonists, testosterone, HRT compounds, peptides, and ancillaries.

Methodology

The science and principles behind Doseline. Every estimate explained.

PK Modeling

How we calculate your levels

Multi-compartment pharmacokinetic modeling, absorption curves, and steady-state estimation. The math behind the medication level charts.

Data Sources

Where the numbers come from

FDA prescribing information, published clinical data, and community reference materials. Every data point is cited and quality-rated.

Privacy

How your data stays private

Local-first architecture, on-device storage, no accounts required. Your health data never leaves your phone unless you explicitly choose to sync.

Guides

In-depth reference articles from the blog. Kept current, cited, and community-specific.

TRT ·

Bloodwork Timing on TRT

Timing matters more than you think. Here's when to draw blood on TRT — trough vs peak timing, what to test, how often, and how to interpret results in context.

Reference

Glossary

PK terms, community abbreviations, and medical vocabulary explained in plain language. From "half-life" to "PIP" to "trough" — every term the app uses, defined.

Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.