Natur Total Verlag · English US edition
Peptides
Without Guesswork
A Clear Guide to Science,
Evidence, and U.S. Rules
A clear guide by Ralf Hebrock to peptide science, research evidence and U.S. rules on approval, prescribing, compounding and research. Read the English original, focused on the U.S. context.
E-book after payment · Paperback: maximum 14 days
30chapters
6practical appendices
336references
Englishoriginal edition
Knowledge you can use
Between high hopes
and reliable evidence.
Which peptides have actually been studied? In which people, in which product and with what result? This book helps you examine promises more closely and understand uncertainty.
01 · Foundations
The language of peptides
What peptides are, how biological signals work and what to ask when reading a study.
02 · Metabolic health
Beyond the number on the scale
GLP-1, semaglutide and tirzepatide: findings, study populations and limits to their relevance.
03 · Recovery
A closer look at the promises
BPC-157, thymosin beta-4, TB-500 and the growth hormone axis in their research context.
04 · Skin & immune signals
The specific product matters
Collagen peptides, GHK-Cu and immune-related claims: identity, formulation and route of use.
05 · Longevity
Make healthy years concrete
MOTS-c, epitalon, Semax, Selank, sleep and sexual health, with attention to human evidence.
06 · Decisions
Bring better questions to the conversation
Safety, quality and six practical appendices to prepare for a discussion with your clinician.
Your edition
Read. Listen.
Refer back at your pace.
Choose the format that fits your day. The English e-book is available now. The paperback below is the German edition. The English audiobook offer will follow when its audio files are complete.
01 · Read digitally
E-Book
EPUB · English
€8.65
incl. VAT · no shipping costs
- Complete English EPUB
- Adjustable text and linked chapters
- 30 chapters + six appendices + references
Available after successful payment.
Download access is provided automatically.
02 · Read & listen
E-Book + Audiobook
€21.90
planned price incl. VAT · no shipping costs
- English EPUB e-book
- English audiobook planned
- Read and listen in one offer
English audiobook in preparation.
Not yet available to purchase. The offer will be released when the complete English audio files are ready.
03 · Read in print
Paperback
German edition
€24.90
incl. VAT · plus shipping
- 470 pages · German edition
- Paperback with a matte cover
- ISBN 978-3-69433-023-3
Delivery: maximum 14 days.
Shipping costs are shown at checkout.
Digital: The EPUB works with common reading apps. For Kindle, use “Send to Kindle”. No printed book is shipped.
Print: German paperback, 470 pages, 6 × 9 inches. Delivery takes a maximum of 14 days; shipping costs apply.
Table of contents
Inside the book.
Six parts take you from the foundations to a personal decision framework. Open a section to see the English chapter titles and appendices.
Understanding the Peptide Landscape
- Chapter 1: Peptides, Promises, and Better Questions
- Chapter 2: What Peptides Are—and Why the Name Is Not Enough
- Chapter 3: From a Biological Signal to a Real-World Effect
- Chapter 4: How to Read a Peptide Study
- Chapter 5: The US Map: Approval, Prescribing, Compounding, and Research
Metabolic Health and Weight Management
- Chapter 6: GLP-1: The Biology Behind the Headlines
- Chapter 7: Semaglutide: What the Evidence Actually Shows
- Chapter 8: Tirzepatide: A Different Approach to Metabolic Treatment
- Chapter 9: Beyond the Scale: Muscle, Nutrition, and Long-Term Function
- Chapter 10: The Next Wave: Reading the Metabolic Pipeline
Recovery, Performance, and the Growth Hormone Axis
- Chapter 11: BPC-157: Recovery Claims Under the Microscope
- Chapter 12: Thymosin Beta-4 and TB-500: Getting the Identity Right
- Chapter 13: Growth Hormone and IGF-1: Signals, Measurements, and Trade-Offs
- Chapter 14: CJC-1295, Ipamorelin, and the Secretagogue Question
- Chapter 15: Tesamorelin and the Limits of Extrapolation
Skin, Connective Tissue, and Immune Signaling
- Chapter 16: Collagen Peptides: A Closer Look at Everyday Use
- Chapter 17: GHK-Cu: Molecule, Formulation, and Route
- Chapter 18: Skin and Hair Claims: Looking Past the Ingredient List
- Chapter 19: Thymosin Alpha-1, KPV, and LL-37: Immune Claims in Context
- Chapter 20: Gut Health and Inflammation: Asking More Precise Questions
Longevity, Brain, Sleep, and Sexual Health
- Chapter 21: MOTS-c and the Mitochondrial Promise
- Chapter 22: Epitalon, Telomeres, and the Meaning of Longevity
- Chapter 23: Semax and Selank: Brain Claims and Human Evidence
- Chapter 24: DSIP and Sleep: Measuring What Matters
- Chapter 25: Bremelanotide and Melanocortins: Indication Matters
Making an Informed Decision
- Chapter 26: Stacks, Cycles, and the Problem of Attribution
- Chapter 27: Safety: What We Know, What We Miss, and Who Was Studied
- Chapter 28: Quality, Testing, and the Online Marketplace
- Chapter 29: A Better Conversation With Your Clinician
- Chapter 30: Your Decision Framework—and How to Stay Current
Appendices A–F
- Appendix A: Peptide Reference Map
- Appendix B: Define the study and the outcome
- Appendix C: Prepare for the visit
- Appendix D: Connect the report to the material
- Appendix E: Define the decision and compare options
- Appendix F: Glossary and Update Log
Includes a glossary and references. Research and source dates are stated in the book.
Reading sample · English
A better question
is a good place to start.
An unchanged excerpt from Chapter 1: “Peptides, Promises, and Better Questions”, in the English original.
Consider Jamie, a fictional reader aged 54 who enjoys lifting weights, walking on weekends, and staying active. Lately, a good workout seems to cost an extra day of recovery. An old shoulder problem interrupts progress, and the bathroom scale has become another source of frustration.
One evening, Jamie listens to a podcast about peptides. The conversation moves from weight loss to tissue repair, then to sleep and healthy aging. A clinic website offers a consultation. A friend sends a photograph of a supplement label. Another link leads to vials with unfamiliar names. By bedtime, Jamie has several new tabs open and one apparently simple question: Which peptide should I try?
Perhaps Jamie's question brought you here too. You want to move comfortably, manage a health condition, remain independent, or understand a proposed treatment. Begin by describing that goal clearly enough for evidence to inform your decision.
From “Peptides Without Guesswork” · Ralf Hebrock · Chapter 1
Before ordering
Your questions.
Clear answers.
Edition, delivery and contents at a glance.
What language is the book in?
The e-book and planned audiobook bundle on this English page are in English. The paperback currently offered here is the German edition and is labelled accordingly.
How do I receive the e-book?
After successful payment, download access is provided automatically. You receive a complete EPUB. There are no shipping costs.
EPUB works with common reading apps. For Kindle, transfer it using “Send to Kindle”; the EPUB is not intended for direct USB import.
When will the e-book + audiobook be available?
The middle offer is prepared at €21.90 incl. VAT. The audiobook is in preparation, and the bundle is not yet available to purchase. It will be released when the complete audio files are ready.
How long does paperback delivery take?
Delivery takes a maximum of 14 days. The paperback costs €24.90 incl. VAT, plus shipping. Shipping costs are displayed at checkout before purchase.
What content and supplements are included?
The English original includes 30 chapters, six appendices A–F and 336 references, with a glossary, practical worksheets and update log.
This is the U.S. edition. The Germany/EU supplements belong to the separate German edition.
Is this a guide to using peptides?
The book helps you assess studies, claims and unanswered questions. It does not replace individual medical advice or treatment and does not recommend self-treatment.
Understand the evidence. Make informed decisions.
English e-book €8.65 · German paperback €24.90 plus shipping
This book provides general information. It does not replace individual medical advice or treatment and is not a self-treatment guide.