Peptide Cycling Protocols: How Long to Run Each Peptide and When to Take a Break
Evidence-based cycling schedules for BPC-157, TB-500, CJC-1295/Ipamorelin, Sermorelin, Epithalon, and Thymosin Alpha-1 — when to run, when to pause, and why it matters.
Peptide Therapy
Limited EvidenceCJC-1295 / Ipamorelin
Unapproved growth hormone secretagogues: short-term human GH-release studies, no outcome trials. Evidence, risks and regulatory status.
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Sermorelin Dosage & Protocol Guide: Titration, Timing, and Lab Monitoring
Physician-authored sermorelin dosage guide covering starting doses, titration, bedtime timing, cycle structure, IGF-1 monitoring, and age-specific adjustments.
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Ibutamoren (MK-677): A Physician's Guide to the Oral Growth Hormone Secretagogue
Dr. Douwes breaks down MK-677 (ibutamoren): mechanism, dosing, human trial evidence, safety signals, regulatory status, and how it compares to injectable GH peptides.
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Sermorelin vs CJC-1295: Which Growth Hormone Peptide Is Right for You?
Sermorelin and CJC-1295 both stimulate growth hormone release, but differ in half-life, pulsatility, and clinical use. A physician's comparison of both peptides.
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Sermorelin Peptide: A Physician's Guide to Growth Hormone Optimization
Dr. med. univ. Julian Douwes reviews sermorelin dosing, clinical uses, how it compares to CJC-1295 and ipamorelin, and what patients realistically gain from GH peptide therapy.
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Ipamorelin: A Physician's Guide to Dosage, Benefits, and Clinical Use
Ipamorelin selectively amplifies GH pulses without raising cortisol or prolactin. Physician guide to dosing, stacking with CJC-1295, and candidacy.
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Peptide Therapy for Women: What the Clinical Evidence Actually Shows
A physician's evidence-based guide to peptide therapy for women — covering hormonal interactions, key peptides, dosing considerations, and who is a suitable candidate.
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Peptides for Muscle Growth: What the Evidence Actually Supports
Evidence-based review of peptides for muscle growth. GH secretagogues, BPC-157 for recovery, safety risks, and where the human evidence stops.
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CJC-1295/Ipamorelin vs Tesamorelin: Growth Hormone Secretagogues Compared
A physician's comparison of CJC-1295/Ipamorelin and tesamorelin — mechanisms, evidence, body composition effects, and which GH secretagogue suits which patient.
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CJC-1295/Ipamorelin Dosage: Growth Hormone Protocol
CJC-1295/Ipamorelin dosing guide by Dr. med. univ. Julian Douwes: nightly subcutaneous protocol, DAC vs no-DAC, cycling, monitoring, FDA safety notes and WADA status.
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CJC-1295/Ipamorelin for Weight Loss and Body Composition
CJC-1295/Ipamorelin for fat loss and body recomposition. Dr. med. univ. Julian Douwes explains growth hormone mechanisms, realistic expectations, and what the evidence supports.
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CJC-1295/Ipamorelin: Growth Hormone Secretagogues
CJC-1295 and Ipamorelin review by Dr. med. univ. Julian Douwes. Growth hormone optimization, body composition, evidence for GH secretagogues, dosing and safety.
