Read the science.
Run the numbers.
Decide for yourself.
PeptideIQ is an evidence-based reference for adults exploring peptides, GLP-1s, hormones, and longevity protocols. No products. No prescriptions. Just rigor, dosing math, and primary sources.
What we're reading
Curated long-form on peptide pharmacology, longevity, and metabolic health.
GLP-1 Side Effects Compared: What to Expect from Every Major Medication
Complete comparison of GLP-1 side effects across semaglutide, tirzepatide, CagriSema, retatrutide, and orforglipron. Learn what to expect, how to manage symptoms, and when to seek medical attention.
Retatrutide: The Triple Agonist Producing Record Weight Loss — Mechanism, Data & Outlook
Retatrutide is the first triple GIP/GLP-1/glucagon agonist. Phase 3 data shows up to 28.7% weight loss — the highest ever recorded. Learn about its mechanism, trial results, and projected timeline.
GLP-1 Medication Costs: Insurance, Savings Programs & the $149 Oral Option
GLP-1 medication costs vary from $149/month for orforglipron to over $1,350/month for Wegovy. Complete guide to insurance coverage, savings programs, LillyDirect, and every way to reduce costs.
Calculators that show their work.
Every tool prints its assumptions, uncertainty, and source. No black boxes.
Reconstitution & Volume
Convert mg → IU → syringe units for any vial size and bacteriostatic water volume.
Open toolSemaglutide Titration
Build a 16-week escalation schedule with side-effect-aware step-downs.
Open toolTirzepatide Reconstitution
Dual GIP/GLP-1 dosing with weekly Δ tracking and pen conversion math.
Open toolBPC-157 Protocol Builder
Localized vs. systemic dosing with cycle planner and stacking guidance.
Open toolNext-Gen GLP-1s
Side-by-side: retatrutide, CagriSema, survodutide, mazdutide.
CompareTB-500 Loading Phase
Build a 4-week loading + maintenance schedule with cycle-off planning.
Open toolStart here.
Long-form, beginner-to-advanced. Built like textbooks, read like Wikipedia.