Free Reconstitution Calculator
Enter vial size, BAC water volume, and target dose — get exact syringe units instantly. Works with every reconstituted peptide. No signup required.
Use CalculatorPeptide Research Hub · Updated April 16, 2026
Peptide Research, Organized
PepPal brings together the tools, data, and guides you need to research peptides in one place — a free reconstitution calculator, a Finnrick-tested supplier directory, 30+ dosing protocol guides with clinical citations, and evidence-based articles covering fat loss, recovery, skin health, and more. No subscriptions, no accounts required for the core tools.
Built and maintained by Garret Grant - Founder & Lead Researcher, B.S. Engineering, UCLA.
Last updated: April 16, 2026
Human-researched and AI-assisted with full editorial review. I verify sources, rankings, and final judgments personally. See methodology.
What You'll Find Here
Four pillars, one ecosystem. Pick the tool that matches your stage of research.
Verified Supplier Directory
Five suppliers independently assessed using Finnrick Analytics testing data. COA verification, quality ratings, pricing context, and discount codes.
Compare Suppliers30+ Dosing Protocol Guides
Titration schedules, reconstitution math, clinical trial references, and safety data for every major research peptide and named stack.
Browse ProtocolsEvidence-Based Research Guides
Deep-dive articles on fat loss, muscle recovery, skin health, stacking safety, supplier quality, and reconstitution — with clinical trial citations and source tiers.
Read the BlogBrowse Peptides by Goal
Not sure where to start? Pick a research goal below. Each category links to a curated guide comparing the top peptides for that goal — with clinical trial data, dosing context, supplier options, and reconstitution math.
Fat Loss & Metabolic Health
Top compounds: Semaglutide, Tirzepatide, Retatrutide, CagriSema, AOD-9604
Recovery & Healing
Top compounds: BPC-157, TB-500, GHK-Cu, KPV
Skin, Collagen & Anti-Aging
Top compounds: GHK-Cu, BPC-157, TB-500, KPV
Growth Hormone & Body Composition
Top compounds: CJC-1295, Ipamorelin, Tesamorelin, Sermorelin
Cognitive & Nootropic
Top compounds: Semax, Selank
Stacking Protocols
Top compounds: Wolverine, GLOW, KLOW, CJC/Ipamorelin Pulse, Russian Nootropic
Looking for a specific compound? See the complete peptide list with evidence tiers, dosing ranges, and supplier links.
COA-Verified Peptide Suppliers
PepPal's supplier directory uses Finnrick Analytics independent testing data to assess quality, purity, and contamination risk. We are not a supplier and do not sell peptides. Affiliate relationships are disclosed on every page. Ratings reflect testing data, not payment.
Our #1 Pick
Peptide Partners
Our #1 supplier
Same-day FedEx 2-Day Air, 59 Finnrick tests, multi-lab coverage, and the best per-mg value make Peptide Partners the recommended source for most buyers.
Single Vial?
Orbitrex Peptides
Need one vial?
Broader selection, single-vial orders, and Finnrick A-rated quality make Orbitrex a strong alternative for one-off purchases or harder-to-find compounds.
Discount code PEPPAL — Use at checkout when eligible.
Free Peptide Reconstitution Calculator
Enter your vial size, BAC water volume, and target dose — the calculator returns the exact concentration, dose volume, and syringe units for your insulin syringe. Supports 0.3 mL, 0.5 mL, and 1.0 mL U-100 syringes. Works with every reconstituted peptide including Tirzepatide, Semaglutide, Retatrutide, BPC-157, TB-500, CJC-1295, Ipamorelin, GHK-Cu, and more.
Includes a reverse calculator (enter syringe units, get BAC water volume), preset examples for common setups, and direct links to supplier pages for sourcing.
Worked Example
10 mg vial + 2 mL BAC water = 5,000 mcg/mL. For a 250 mcg dose: 250 ÷ 5,000 = 0.05 mL = 5 units on a U-100 syringe.
Latest from the PepPal Journal
Featured comparison · Apr 16, 2026 · 18 min read
Semaglutide vs Tirzepatide vs Retatrutide (2026)
Head-to-head comparison of semaglutide, tirzepatide, and retatrutide with SURMOUNT-5 and TRIUMPH-4 data, dosing math, access paths, and supplier pricing.
Read guide ->Apr 21, 2026 · 20 min read
Peptide Side Effects: What Clinical Trials Actually Show (2026)
A class-by-class April 2026 peptide safety guide covering GLP-1 agonists, healing peptides, GH secretagogues, skin peptides, nootropics, contraindications, monitoring, and evidence tiers.
Read guide ->Apr 14, 2026 · 14 min read
Peptide Partners vs Orbitrex Peptides: Side-by-Side Comparison (2026)
Peptide Partners vs Orbitrex Peptides compared on Finnrick testing, pricing, shipping, catalog, and COA verification. Data-backed guide to choosing the right supplier. Updated April 2026.
Read guide ->Apr 6, 2026 · 18 min read
Peptide Stacking 101: How to Combine Peptides Safely (2026)
An April 2026 guide to mechanistic complementarity, safe stack design, cycling schedules, contraindicated pairings, and goal-specific stacks for healing, fat loss, cognition, and body composition.
Read guide ->Peptide Dosing Protocol Library
PepPal partners with PeptideDosingProtocols.com to maintain a standardized research library of 22 individual peptide protocols and 9 multi-peptide stack guides. Every protocol follows a 14-section format with titration schedules sourced from clinical trial publications, verified reconstitution math, side effect data with incidence percentages, and numbered citations.
Semaglutide
GLP-1 agonist · FDA-approved
View protocol ->Tirzepatide
Dual GLP-1/GIP · FDA-approved
View protocol ->Retatrutide
Triple agonist · Phase 3
View protocol ->BPC-157
Tissue repair · Preclinical
View protocol ->TB-500
Cell migration · Recovery
View protocol ->Wolverine Stack
BPC-157 + TB-500
View protocol ->How PepPal Researches Peptides
Every number on this site traces back to a source. PepPal follows a four-tier evidence hierarchy:
Tier 1
Clinical trial publications
NEJM, The Lancet, JAMA, and PubMed. Primary source for efficacy percentages, dosing schedules, and side effect data.
Tier 2
Systematic reviews & independent testing
Finnrick Analytics and peer reviews. Used for supplier quality assessment and cross-study comparisons.
Tier 3
FDA filings & regulatory analyses
Manufacturer data and regulatory pipelines. Used for approval timelines and pipeline status.
Tier 4
Community protocols & practitioner reports
Used only when clinical data doesn't exist (e.g., BPC-157, TB-500), and always labeled as community-derived.
When you see a dosing number or side effect percentage on PepPal or PeptideDosingProtocols.com, it comes from Tier 1 or 2 unless explicitly stated otherwise. We do not use supplier marketing pages, anonymous forums, or influencer claims as evidence sources.
Read the full methodology, source hierarchy, and author credentialsPeptide Regulatory Updates
Regulatory & Legal · Mar 2, 2026
RFK Jr. and the FDA 19 Peptides Claim: Fact Check (March 2026)
A source-based fact check of viral claims that 14 of 19 Category 2 peptides were unbanned, including what is official and what still appears unverified.
Read update ->Regulatory & Legal · Feb 18, 2026
GLP-1 Supply and Compounding Shifts to Watch in 2026
Key policy and market shifts affecting how researchers track availability, sourcing reliability, and quality signals.
Read update ->Frequently Asked Questions
What is PepPal?
PepPal is a peptide research hub that combines a free reconstitution calculator, a Finnrick-tested supplier directory, 30+ dosing protocol guides with clinical citations, and evidence-based articles on fat loss, recovery, skin health, stacking, and supplier quality. It is built and maintained by Garret Grant (B.S. Engineering, UCLA). PepPal does not sell peptides and is not a supplier.
Is the peptide reconstitution calculator free?
Yes. The PepPal peptide reconstitution calculator is completely free with no signup required. Enter your vial size, BAC water volume, and target dose to get exact syringe units for any reconstituted peptide. Use it at peppal.app/calculator.
What peptides does the calculator work with?
Every reconstituted peptide. The math is universal — Tirzepatide, Semaglutide, Retatrutide, BPC-157, TB-500, CJC-1295, Ipamorelin, Tesamorelin, GHK-Cu, KPV, Semax, Selank, AOD-9604, and all others. The calculator supports 0.3 mL, 0.5 mL, and 1.0 mL U-100 insulin syringes.
How does PepPal evaluate peptide suppliers?
PepPal references independent testing data from Finnrick Analytics, a third-party peptide testing service. We assess COA verification quality, testing depth, purity consistency across batches, and contamination screening. We carry affiliate relationships with some listed suppliers, which is disclosed on every page. Ratings reflect testing data, not payment. See the full methodology at peppal.app/about.
What is PeptideDosingProtocols.com?
PeptideDosingProtocols.com is an independent research database maintained by the same team behind PepPal. It hosts 22 individual peptide protocols and 9 multi-peptide stack guides, each following a standardized 14-section format with clinical trial citations, titration schedules, reconstitution math, and safety data. Browse protocols at peppal.app/dosing.
How do I convert mg to syringe units?
Calculate concentration first: divide the vial amount in mcg by the water volume in mL. Then divide your desired dose by the concentration to get dose volume in mL. Multiply by 100 for U-100 syringe units. Example: 10 mg vial plus 2 mL water equals 5,000 mcg/mL. A 250 mcg dose equals 0.05 mL or 5 units. The free calculator automates this for any combination.
Where can I find dosing protocols for a specific peptide?
PepPal hosts a searchable protocol directory at peppal.app/dosing with protocols organized by goal, including fat loss, recovery, growth hormone, nootropic, skin, and more. Each protocol links to the full guide on PeptideDosingProtocols.com with titration schedules, reconstitution tables, side effects, and clinical references.
How do I know if a peptide supplier is trustworthy?
Look for third-party testing, not just the supplier's own COA, along with batch-specific Certificates of Analysis, consistent pricing, and documented quality history. PepPal's supplier directory lists vendors assessed by Finnrick Analytics. For a deeper framework, read How to Read a Peptide COA.
Is PepPal medical advice?
No. PepPal is an educational research hub. All content is for informational purposes only and is not medical advice. Garret Grant is not a doctor, pharmacist, or licensed medical professional. Always consult a qualified healthcare provider before considering any compound.
How often is PepPal updated?
The blog, supplier directory, and dosing protocols are reviewed and updated monthly. The PepPal calculator is continuously maintained. The most recent content update was April 16, 2026. Regulatory news is published as developments occur.
The PepPal Ecosystem
PepPal and PeptideDosingProtocols.com form a connected research ecosystem. Here is what each piece covers:
PepPal (peppal.app)
Free reconstitution calculator, verified supplier directory, research blog covering peptide comparisons, safety, stacking, and sourcing. This is where you start.
PeptideDosingProtocols.com
22 individual peptide protocol pages and 9 multi-peptide stack guides, each following a standardized 14-section format with clinical trial citations. This is where you go deep on a specific compound.
Both sites are maintained by the same team, follow the same source hierarchy, and cross-reference each other throughout. No external funding, no supplier ownership, no ghostwritten content.
Disclaimer & Affiliate Disclosure
Disclaimer: PepPal is an educational research hub. All content is for informational purposes only. This site does not provide medical advice, recommendations, or treatment guidance. Always consult qualified healthcare professionals for any health-related decisions.
Affiliate Disclosure: PepPal earns referral commissions from some suppliers listed in the directory. Affiliate relationships do not influence ratings, which are based on Finnrick Analytics testing data. Full disclosure is provided on every page where affiliate links appear.