REGULATORYRFK Jr.: 14 peptides returning to Category 1 — FDA advisory committee July 2026UPDATESemaglutide and tirzepatide compounding ended — shortage resolved Feb/May 2025REGULATORYBPC-157, TB-500, thymosin alpha-1, CJC-1295, ipamorelin: expected Category 1 reclassification pendingFDAFDA advisory committee meetings scheduled: late July 2026RESEARCHTranslational Health Research Into Vascular and Neurocognitive Effects of Weight Loss [NCT07592546]RESEARCHA Master Protocol of Multiple Agents in Adults With Metabolic Dysfunction-Associated Steatotic Liver Disease (SYNERGY-Outcomes) [NCT07165028]RESEARCHTirzepatide in the Treatment of Endometrial Cancer [NCT07605247]RESEARCHA Study of Tirzepatide (LY3298176) in Participants With Type 2 Diabetes During Ramadan [NCT06635057]RESEARCHA Study of LY3457263 Compared With Placebo in Participants With Type 2 Diabetes on a Stable Dose of Semaglutide or Tirzepatide [NCT06897475]RESEARCHA Phase 2 Study of Vosoritide in Children With Idiopathic Short Stature [NCT06382155]RESEARCHMetabolic Effects of Angiotensin-(1-7) [NCT02646475]RESEARCHMulti-Site Trial of Tirzepatide for Smoking Cessation [NCT07602699]RESEARCHEvaluation of Tirzepatide as an Adjunct to Buprenorphine for the Treatment of Opioid Use Disorder [NCT06651177]NEWSOorja, run by Acceleron veterans, launches to make new fibrosis drugsREGULATORYRFK Jr.: 14 peptides returning to Category 1 — FDA advisory committee July 2026UPDATESemaglutide and tirzepatide compounding ended — shortage resolved Feb/May 2025REGULATORYBPC-157, TB-500, thymosin alpha-1, CJC-1295, ipamorelin: expected Category 1 reclassification pendingFDAFDA advisory committee meetings scheduled: late July 2026RESEARCHTranslational Health Research Into Vascular and Neurocognitive Effects of Weight Loss [NCT07592546]RESEARCHA Master Protocol of Multiple Agents in Adults With Metabolic Dysfunction-Associated Steatotic Liver Disease (SYNERGY-Outcomes) [NCT07165028]RESEARCHTirzepatide in the Treatment of Endometrial Cancer [NCT07605247]RESEARCHA Study of Tirzepatide (LY3298176) in Participants With Type 2 Diabetes During Ramadan [NCT06635057]RESEARCHA Study of LY3457263 Compared With Placebo in Participants With Type 2 Diabetes on a Stable Dose of Semaglutide or Tirzepatide [NCT06897475]RESEARCHA Phase 2 Study of Vosoritide in Children With Idiopathic Short Stature [NCT06382155]RESEARCHMetabolic Effects of Angiotensin-(1-7) [NCT02646475]RESEARCHMulti-Site Trial of Tirzepatide for Smoking Cessation [NCT07602699]RESEARCHEvaluation of Tirzepatide as an Adjunct to Buprenorphine for the Treatment of Opioid Use Disorder [NCT06651177]NEWSOorja, run by Acceleron veterans, launches to make new fibrosis drugs

For research purposes only. Full disclaimer →

Stack Library

Immune Shield

Immune Supportbeginner

89

synergy

89
Share
Peptides

2

Avg Daily mcg

1,750

Level

beginner

Added

May 17, 2026

Overview

The Immune Shield stack combines the most clinically validated immune-enhancing peptide with a systemic repair compound to create a foundational immune optimization protocol. Thymosin Alpha-1 (Ta1) is a 28-amino-acid peptide that was originally isolated from thymic extract (Thymosin Fraction 5) by Allan Goldstein at George Washington University. It functions as the primary signal for T-cell maturation and activation — without adequate thymic output, the adaptive immune system cannot mount effective responses to novel pathogens or maintain immune surveillance against malignant cells. Ta1 is approved in 35+ countries (as Zadaxin) for hepatitis B, hepatitis C, and as a vaccine adjuvant, with over 4,400 published clinical papers documenting its efficacy and safety. BPC-157 is included for its unique influence on the gut-immune axis. Approximately 70% of immune tissue resides in the gut-associated lymphoid tissue (GALT), and intestinal barrier integrity directly influences systemic immune function. BPC-157''s documented effects on tight junction repair, mucosal healing, and modulation of the enteric nervous system support immune function at its largest interface with the external environment. Additionally, BPC-157''s anti-inflammatory properties help redirect immune resources from chronic low-grade inflammation toward active immune surveillance. The combination addresses immune health from two levels: Ta1 provides direct immune cell activation and maturation (top-down immune enhancement), while BPC-157 optimizes the mucosal barrier and gut immune environment that serves as the foundation of immune competence (bottom-up immune support). This stack is classified as beginner-friendly because both peptides have extensive safety data (Ta1 from international clinical use, BPC-157 from decades of animal research), the dosing schedule is simple, and there are no significant drug interactions or monitoring requirements. It is suitable for seasonal immune support, travel prophylaxis, or as a foundation for individuals with recurrent infections.

Dosing Protocol

Thymosin Alpha-1

2x/week· subcutaneous

Read more about Thymosin Alpha-1 →

1,500 mcg

per dose

BPC-157

Every day· subcutaneous

Read more about BPC-157 →

250 mcg

per dose

Goals & Evidence

Immune functionInfection resistanceGut-immune axisT-cell activationInflammation
Evidence tier:Human RCT

Warnings

  • Thymosin Alpha-1 is Cat 1 (approved in 35+ countries as Zadaxin). BPC-157 is Cat 2. Good safety profile in clinical literature.

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Disclaimer: This stack is community-submitted and for research purposes only. Peptide Contacts does not verify the safety or efficacy of submitted stacks. Always consult a qualified healthcare professional before using any peptide protocol.