--- title: "Half-Life Visualizer: Compound Decay Calculator" url: https://www.bodyhackguide.co/tools/halflife description: "Visualize how peptides and nootropics decay over time. Compare half-lives for BPC-157, Semaglutide, Selank, and 60+ compounds with interactive decay charts." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Half-Life Visualizer Compare compound concentration decay over time Understanding half-life After 1 half-life, 50% remains. After 2 half-lives, 25%. After 5 half-lives, less than 3.2%, effectively cleared. Compare up to 5 compounds on the same chart. Or load a popular stack: Active Compounds BPC-157 t½ = 30 min Or enter custom values mg Starting dose hours Time to 50% clearance ## Concentration Decay (% Remaining) ### BPC-157 Source: Short plasma half-life. The first formal preclinical ADME study reported an elimination half-life under ~30 minutes after IV/IM dosing in rats and dogs, with linear dose-proportional kinetics (PMID: 36588717); a 2026 biopharmaceutical review confirms this sub-30-minute plasma half-life and highlights a pharmacokinetic-pharmacodynamic disconnect, as biological effects persist for hours to days (PMID: 42198317). No full human pharmacokinetic study has been published; twice-daily dosing is empirical/community-standard rather than PK-derived. View profile (https://www.bodyhackguide.co/compound/bpc-157) 50% left 30m 25% left 1.0h 10% left 1.7h ~3% left 2.5h How we verify half-life data All half-life values are sourced from peer-reviewed pharmacokinetic studies and clinical trial publications. Peptide half-lives come from published phase I/II trial data and manufacturer PK profiles. Nootropic half-lives reference clinical pharmacology literature and drug monographs. Values shown as ranges (e.g. "4-6 hours") are averaged for visualization. The raw source value is displayed in each compound's milestone card. For compounds where human PK data is limited, animal model data is used and noted accordingly. ### Related Tools Reconstitution Calculator: https://www.bodyhackguide.co/tools/reconstitution Dosage Calculator: https://www.bodyhackguide.co/tools/dosage Intranasal Spray Calculator: https://www.bodyhackguide.co/tools/intranasal ## Frequently Asked Questions ### What is a compound's half-life? ### Why does half-life matter for dosing? ### Where do these half-life values come from? ### Can I compare multiple compounds on the same chart? Compare prices → See where to source these compounds https://www.bodyhackguide.co/compare?ids=bpc-157 Build a cycle → Plan ON/OFF days for these https://www.bodyhackguide.co/tools/cycling-generator Check interactions → Confirm this stack is safe https://www.bodyhackguide.co/tools/interaction-checker Free 2026 Peptide Cheat Sheet (PDF) 38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers. Download Free (https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download) Image: BodyHackGuide (https://www.bodyhackguide.co/assets/bodyhackguide-logo-DOzZNUyh.webp) ### BodyHackGuide Your biohacking research hub: compound pricing, brain health protocols, dosing tools, and vendor reviews. support@bodyhackguide.co Join our Discord: https://discord.gg/Mhq5UdRYBA r/BodyHackGuide on Reddit: https://reddit.com/r/BodyHackGuide #### Explore - Compare prices: https://www.bodyhackguide.co/compare - Vendors: https://www.bodyhackguide.co/vendors - Deals: https://www.bodyhackguide.co/deals - Coupons: https://www.bodyhackguide.co/coupons - Nootropics: https://www.bodyhackguide.co/nootropics - Brain health: https://www.bodyhackguide.co/brain-health - Blog: https://www.bodyhackguide.co/blog - Guides: https://www.bodyhackguide.co/guides #### Tools - Reconstitution: https://www.bodyhackguide.co/tools/reconstitution - Half-life visualizer: https://www.bodyhackguide.co/tools/halflife - COA reader: https://www.bodyhackguide.co/tools/coa - Cost calculator: https://www.bodyhackguide.co/tools/cost-calculator - Stack builder: https://www.bodyhackguide.co/stack-builder - All tools: https://www.bodyhackguide.co/tools #### Trust & vendors - Vendor directory: https://www.bodyhackguide.co/vendors - Trust scorecard: https://www.bodyhackguide.co/vendors/scorecard - Vendor trust badge: https://www.bodyhackguide.co/vendors/get-vetted - Scoring methodology: https://www.bodyhackguide.co/vendors/methodology - Peptide cheat sheet: https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download #### Company - About: https://www.bodyhackguide.co/about - Affiliate disclosure: https://www.bodyhackguide.co/affiliate-disclosure - Editorial standards: https://www.bodyhackguide.co/editorial-standards - Creators: https://www.bodyhackguide.co/creators - Coaches: https://www.bodyhackguide.co/coaches - 1-on-1 coaching: https://www.bodyhackguide.co/coaching - Privacy: https://www.bodyhackguide.co/privacy - Terms: https://www.bodyhackguide.co/terms - Full site directory: https://www.bodyhackguide.co/site-directory **Affiliate Disclosure:** We rank every vendor on the same public, reproducible methodology (https://www.bodyhackguide.co/vendors/methodology), and we earn a commission from purchases made through some of our links at no extra cost to you. Full details in our affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). **Research Disclaimer:** All compounds listed are for laboratory and research purposes only. Not for human consumption. This site does not sell or ship any products. Always consult a qualified healthcare professional and comply with local regulations. © 2026 BodyHackGuide. All rights reserved. · Terms (https://www.bodyhackguide.co/terms) · Privacy (https://www.bodyhackguide.co/privacy) ## Structured data ```json [ { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is a compound's half-life?", "acceptedAnswer": { "@type": "Answer", "text": "A half-life is the time it takes for the concentration of a substance in your body to reduce by 50%. After one half-life, 50% remains. After two half-lives, 25%. After five half-lives (~3.1% remaining), the compound is considered effectively cleared from the body." } }, { "@type": "Question", "name": "Why does half-life matter for dosing?", "acceptedAnswer": { "@type": "Answer", "text": "Half-life determines how often you need to re-dose to maintain effective levels. Short half-life compounds (like Semax at ~20 minutes) require multiple daily doses, while long half-life compounds (like Semaglutide at ~168 hours) only need weekly dosing." } }, { "@type": "Question", "name": "Where do these half-life values come from?", "acceptedAnswer": { "@type": "Answer", "text": "Our half-life data is sourced from peer-reviewed pharmacokinetic studies, clinical trial data, and pharmaceutical reference databases. For peptides, values come from published PK studies. For nootropics, values are drawn from clinical literature and manufacturer data. Each value is cited on the individual compound profile page." } }, { "@type": "Question", "name": "Can I compare multiple compounds on the same chart?", "acceptedAnswer": { "@type": "Answer", "text": "Yes! Click 'Add compound' to overlay up to 5 compounds on the same decay chart. This is useful for timing stacked compounds: for example, seeing when BPC-157 clears while TB-500 is still active." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.bodyhackguide.co" }, { "@type": "ListItem", "position": 2, "name": "Tools", "item": "https://www.bodyhackguide.co/tools" }, { "@type": "ListItem", "position": 3, "name": "Half-Life Visualizer", "item": "https://www.bodyhackguide.co/tools/halflife" } ] }, { "@context": "https://schema.org", "@type": "SoftwareApplication", "name": "Peptide Half-Life Visualizer", "description": "Free peptide half-life and decay visualizer. Overlay up to 5 compounds to see elimination curves, steady-state, and optimal dosing intervals.", "url": "https://www.bodyhackguide.co/tools/halflife", "applicationCategory": "HealthApplication", "operatingSystem": "Any (web-based)", "browserRequirements": "Requires JavaScript", "offers": { "@type": "Offer", "price": "0", "priceCurrency": "USD" }, "creator": { "@type": "Organization", "name": "BodyHackGuide", "url": "https://www.bodyhackguide.co" } } ] ```