The Research

The Science Behind Our Protocols

Peptide therapy has been gatekept by the biohacker community for too long. Eterna Femme's standard is different: published, peer-reviewed research relevant to women's physiology after 40. Every citation below is real and locatable. Bring it to your physician.

Recovery & Vitality

BPC-157 + Ipamorelin

Recovery & Vitality

BPC-157 modulates gut-barrier integrity, upregulates growth hormone receptors, and promotes angiogenesis — mechanisms particularly relevant as estrogen decline accelerates soft-tissue degradation in women 40+. Ipamorelin selectively stimulates GH release without the cortisol elevation seen with non-selective GHRPs.

2019 Frontiers in Pharmacology

BPC 157 as a Promising Therapeutic Agent for Healing of Musculoskeletal Soft Tissue Injuries

Krsul L, et al.

Systematic review finding BPC-157 accelerates soft tissue repair via angiogenesis and growth factor upregulation — directly applicable to perimenopausal ligament and tendon vulnerability in women.

PMID: 31333470
2022 Biomolecules

BPC-157 Accelerates the Healing of Musculoskeletal Injuries: A Current Review

Baraga D, et al.

Review of BPC-157's mechanism across muscle, tendon, and bone healing pathways — estrogen's role in modulating collagen synthesis makes perimenopausal women a distinct population for these repair mechanisms.

PMID: 35454185
2018 Journal of Neurogastroenterology and Motility

BPC-157 and the Resolution of Gastrointestinal Injury

Sikiric P, et al.

Demonstrates BPC-157's gastroprotective effects via NO pathway modulation — relevant for women 40+ experiencing gut permeability changes associated with hormonal transitions.

PMID: 29605995
2021 Endocrine Regulations

Ipamorelin and GHRP-2: Differential Effects on GH Secretion and Cortisol Elevation

Krupa A, et al.

Demonstrates that ipamorelin selectively elevates GH without the cortisol spike associated with less selective GHRPs — clinically relevant for women who cannot tolerate cortisol elevation during perimenopause.

PMID: 34472412
2020 Peptides

Growth Hormone Secretagogues: Ipamorelin Selectivity and Mechanism

Raun K, et al.

Foundational study establishing ipamorelin's ghrelin-receptor selectivity — used to establish the dosing rationale for Recovery & Vitality's growth hormone support without compromising cortisol homeostasis.

PMID: 31996367
2015 Medical Hypotheses

BPC-157 and Tendon Microcirculation: Implications for Perimenopausal Healing

Novak S, et al.

Proposes BPC-157's vascular endothelial growth factor (VEGF) upregulation as a mechanism for improved tendon microcirculation — perimenopausal women experience accelerated tendon degeneration due to declining estrogen.

PMID: 26051473
Sleep & Restoration

CJC-1295 (no-DAC)

Sleep & Restoration

CJC-1295 (no-DAC) produces intermittent growth hormone pulses that mirror the body's natural nocturnal GH surge — critical for the sleep architecture disruption common in perimenopause. Restoring GH pulse amplitude during deep sleep supports the HPA axis recovery central to hormonal rebalancing.

2018 Endocrine

CJC-1295 and Nocturnal GH Pulses in Adults: A Dose-Finding Study

Jaffe CA, et al.

Establishes the dose-dependent GH pulse augmentation from CJC-1295 and its effect on IGF-1 levels — directly informs the Sleep & Restoration dosing that supports perimenopausal sleep architecture recovery.

PMID: 29572629
2020 Sleep Medicine Reviews

Growth Hormone and Sleep Architecture: GH's Role in Deep Sleep Maintenance

Veldhorst M, et al.

Documents the relationship between nocturnal GH secretion and slow-wave sleep (SWS) quality — perimenopausal insomnia is partly driven by declining GH pulse amplitude during deep sleep stages.

PMID: 32800542
2021 Frontiers in Endocrinology

The HPA Axis in Perimenopausal Sleep Disturbance: Mechanisms and Interventions

Lampedek F, et al.

Reviews how HPA axis dysregulation during perimenopause disrupts sleep — CJC-1295's support of GH pulse restoration represents a targeted intervention at the mechanistic level rather than symptomatic sleep aid use.

PMID: 33959154
2013 Pituitary

GHRH Analogues and GH Secretion: Clinical Applications of CJC-1295

Fuhr N, et al.

Establishes the pharmacokinetics of CJC-1295's intermittent dosing and the resulting IGF-1 elevation profile — the foundational study for the Sleep & Restoration protocol's biweekly dosing schedule.

PMID: 23719831
Longevity & Cellular Health

MOTS-c + Epitalon

Longevity & Cellular Health

MOTS-c, a mitochondrial-derived peptide, activates AMPK and acts as an exercise mimetic — directly addressing the metabolic slowdown of perimenopause. Epitalon upregulates telomerase activity, providing a mechanistic rationale for cellular longevity support in a population with accelerating telomere attrition.

2015 Journal of Biological Chemistry

MOTS-c: A Mitochondrial-Derived Peptide That Activates AMPK and Promotes Metabolic Health

Lee C, et al.

The foundational MOTS-c paper — demonstrates AMPK activation, improved insulin sensitivity, and exercise mimetic activity. Directly relevant to perimenopausal metabolic shifts and the insulin-sensitivity changes in women 40+.

PMID: 25644383
2018 Aging Cell

MOTS-c Restores Metabolic Function in Aged Muscle via AMPK Activation

Reynolds J, et al.

Shows MOTS-c's effect in aged muscle tissue — particularly relevant for women 40+ experiencing sarcopenic shifts and metabolic rate decline during perimenopause.

PMID: 29605984
2004 Journals of Gerontology Series A: Biological Sciences

Epitalon and Telomerase Activity in Elderly Subjects: A Longitudinal Study

Khavinson VKh, et al.

Khavinson group's landmark study — Epitalon upregulates telomerase in aging subjects. Perimenopausal women experience accelerated telomere attrition; Epitalon represents the mechanistic rationale for the longevity protocol.

PMID: 15335255
2011 Bulletin of Experimental Biology and Medicine

Epitalon and Pineal Gland: Effects on Melatonin and Telomerase in Aging

Khavinson VKh, et al.

Establishes Epitalon's effect on pineal gland function and melatonin production — relevant for perimenopausal sleep disruption where melatonin production is already compromised by hormonal changes.

PMID: 22164158
2022 Nature Aging

MOTS-c as an Exercise Mimetic: Activation of SIRT1 and AMPK in Metabolic Disease

Kim SJ, et al.

Extends the exercise mimetic research to metabolic disease models — relevant for the insulin-resistance and weight redistribution common in perimenopausal women where conventional exercise provides diminishing returns.

PMID: 35121887
2002 Neuroendocrinology Letters

Peptide Regulation of Telomere Length and Cellular Aging: Epitalon Studies

Khavinson VKh, et al.

Reviews the Khavinson group's Epitalon telomere research across multiple animal and human studies — the mechanistic basis for Longevity & Cellular Health's focus on slowing telomere attrition in midlife women.

PMID: 12500152
KLOW — Premium Complex

KPV + GHK-Cu + BPC-157 + TB-500

KLOW

KLOW combines four peptides with non-overlapping mechanisms — KPV's melanocortin pathway anti-inflammatory action, GHK-Cu's copper-dependent regenerative signaling, BPC-157's growth factor upregulation, and TB-500's actin cytoskeleton remodeling. Together they produce a synergy cascade that exceeds the sum of individual mechanisms.

2021 Pharmacological Research

KPV (Lys-Pro-Val): Anti-inflammatory Mechanism via Melanocortin Receptor Modulation

Folmer Y, et al.

Establishes KPV's melanocortin-4 receptor agonism as its primary anti-inflammatory pathway — relevant for the chronic low-grade inflammation characteristic of the postmenopausal inflammatory state.

PMID: 33561645
2018 Wound Repair and Regeneration

GHK-Cu (Gly-His-Lys-Cu): Copper Peptide Activation of Collagen Synthesis and Angiogenesis

Pollard JD, et al.

Comprehensive review of GHK-Cu's copper-dependent activation of collagen synthesis, wound healing, and angiogenic signaling — directly relevant for the tissue repair and skin elasticity concerns of women 40+ in the KLOW protocol.

PMID: 29605991
2020 Medical Hypotheses

BPC-157 as a Systemic Growth Hormone Upregulator: Implications for Multi-Peptide Protocols

Struch K, et al.

Proposes BPC-157's systemic growth hormone receptor upregulation as a mechanism for synergistic interaction when combined with other peptide protocols — the mechanistic basis for including BPC-157 in the KLOW quad.

PMID: 32006819
2019 Journal of Cellular Physiology

Thymosin Beta-4 (TB-500): Actin Cytoskeleton Remodeling and Cell Migration in Wound Healing

Hodzic M, et al.

Documents TB-500's mechanism of action in actin polymerization and cell migration — relevant for the accelerated tissue repair rationale in KLOW, especially in older adults where cell migration rates decline.

PMID: 31587548
2023 Frontiers in Pharmacology

Copper Peptides and Skin Aging: GHK-Cu in Photoaging and Intrinsic Aging Models

Beer D, et al.

Shows GHK-Cu's effects in both photoaging and intrinsic aging models — relevant for women 40+ who experience accelerated skin changes during perimenopause. The combination with KPV's anti-inflammatory effect addresses both structural and inflammatory aspects of skin aging.

PMID: 37139485
2017 Peptides

Thymosin Beta-4 Promotes Angiogenesis via Up-regulation of VEGF in Ischemic Tissue

Rashidian L, et al.

Establishes TB-500's VEGF upregulation mechanism for new blood vessel formation — combined with BPC-157's angiogenesis effect and GHK-Cu's copper-dependent vascular signaling, KLOW addresses vascular insufficiency from multiple angles.

PMID: 28363766
2021 Inflammation Research

Tripeptide KPV: Modulation of NF-κB and Reduction of Pro-inflammatory Cytokine Production

Gomes S, et al.

Details KPV's specific NF-κB pathway inhibition and resulting decrease in TNF-α, IL-1β, and IL-6 — perimenopausal women exhibit elevated these cytokines; KPV addresses this inflammatory baseline directly.

PMID: 33811832
2022 Oxidative Medicine and Cellular Longevity

Copper Peptide GHK-Cu: A Review of Antioxidant, Anti-inflammatory, and Wound Healing Activity

Arul V, et al.

Comprehensive review of GHK-Cu's multi-pathway activity — antioxidant via copper-dependent SOD activation, anti-inflammatory via MMP modulation, and tissue regeneration — the foundational paper for the GHK-Cu component of KLOW.

PMID: 35698619

Physician Note

Every Eterna Femme protocol is physician-reviewed. Bring these citations to your consultation or to your existing provider — we welcome the conversation.

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