What is the standard TB-500 dose?

Research loading phase: 2-2.5mg subcutaneous injection twice per week for 4-6 weeks. Maintenance phase: 2mg once per week. TB-500 acts systemically, so injection site is less important than with BPC-157. The abdominal area is the most common injection location.

Should peptide doses be based on body weight?

It depends on the peptide. BPC-157 and TB-500 use flat dosing (not weight-adjusted) in most research protocols. Growth hormone secretagogues like CJC-1295 and MK-677 also use flat dosing. Some peptides like AOD-9604 have been studied at weight-based doses in clinical trials. This calculator specifies which approach each peptide uses.

Can I take multiple peptides at the same dose?

Each peptide has its own dosing protocol — they are not interchangeable. BPC-157 at 250-500mcg/day is very different from TB-500 at 2-2.5mg twice weekly. Always look up the specific peptide. And never mix different peptides in the same vial or syringe.

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Peptide Dosing Calculator

Get recommended dosing protocols based on peptide type, body weight, and experience level

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RecoveryGut HealthTendon RepairSubcutaneous (near injury site)

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This peptide dosing calculator provides research-based dosing ranges for common peptides based on your body weight. Doses are derived from published preclinical studies, clinical trial protocols, and established research community standards. All outputs are for educational and research purposes only.

Medical Disclaimer

The information and calculations provided by this tool are for educational and research purposes only. Peptides discussed on NinjAthlete are research compounds and are not FDA-approved for human consumption, treatment, cure, or prevention of any disease.

This tool does not provide medical advice, diagnosis, or treatment recommendations. Dosing outputs are based on published research protocols and general pharmacological principles — they are not a prescription or a substitute for guidance from a licensed physician, pharmacist, or qualified healthcare provider.

Always consult a licensed medical professional before using any peptide or research compound. NinjAthlete assumes no liability for decisions made based on the output of this tool. Read our editorial policy

Frequently Asked Questions

Research protocols typically use 250-500mcg per day via subcutaneous injection. For a standard 5mg vial reconstituted with 2ml BAC water, this is 10-20 units on an insulin syringe per day. Cycles typically run 4-6 weeks. Inject as close to the injury site as possible for localized healing.

Related Tools & Guides

Peptide Reconstitution Calculator Why Mixing Peptides Sabotages Results Peptide Timing Guide BPC-157 Dosage Guide The Wolverine Complex Stack Guide

NinjAthlete Team

NinjAthlete is a performance optimization platform publishing evidence-based guides on HYROX training, peptide therapy, biohacking, and longevity science. HYROX content is informed by sub-60 competition experience (59:51, HYROX Dallas). Peptide content cites peer-reviewed research with DOI/PubMed links.

Conflict of interest disclosure: NinjAthlete has affiliate relationships with peptide research suppliers. Discount codes may earn NinjAthlete a commission. This does not influence dosing methodology, research citations, or educational content.

Last reviewed: April 2026|Editorial Policy

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