Eterna Femme's premium quad-peptide complex — KPV, GHK-Cu, BPC-157, and TB-500 — engineered to work in concert. Anti-inflammatory, copper-driven regeneration, systemic repair, and tissue remodeling in one physician-guided protocol built for women who demand comprehensive cellular renewal.
The Science
KLOW combines KPV, GHK-Cu, BPC-157, and TB-500 because no single peptide addresses the full scope of cellular aging in a perimenopausal body. KPV suppresses the chronic low-grade inflammation that accelerates tissue breakdown. GHK-Cu activates copper-dependent regeneration pathways — collagen, skin, connective tissue. BPC-157 drives systemic tissue repair through angiogenesis and growth hormone receptor upregulation. TB-500 (Thymosin Beta-4 fragment) remodels the actin cytoskeleton — the cellular scaffolding that governs tissue flexibility and repair architecture. Together, they work on inflammation, regeneration, repair, and remodeling simultaneously — the four processes that decline fastest in your 40s.
Perimenopause doesn't just shift hormones — it dismantles the cellular machinery that regenerates tissue. Estrogen decline reduces collagen synthesis by up to 30% in the first five years of perimenopause. Copper metabolism shifts, impairing GHK-Cu's natural pathway. Inflammatory tone rises. The body becomes less efficient at clearing damaged tissue and less responsive to signals to rebuild. KLOW doesn't fight aging with hormones. It restores the peptide signaling networks that estrogen once supported — directly, at the cellular level. For women whose bodies are doing less of what they once did automatically, this is the protocol designed to close that gap.
Women on KLOW report a wide range of tissue-level changes because its mechanisms span multiple systems. Most common: improved skin thickness and texture within 4–6 weeks (GHK-Cu); reduced joint and connective tissue discomfort, faster soft-tissue recovery from exercise (BPC-157 + TB-500); lower ambient inflammatory burden — fewer flares, less morning stiffness (KPV). Women who have experienced visible skin changes from perimenopause — laxity, increased fragility, slower healing of minor wounds — tend to notice the most dramatic shifts. This is not cosmetic positioning. It is the biology of copper peptide regeneration working as intended.
A quad-peptide protocol is meaningfully more complex than a single-peptide approach. The interactions between GHK-Cu's copper metabolism and the body's inflammatory signaling, the timing of BPC-157 relative to TB-500's cytoskeletal action, the dosing sequence across an 8-week cycle — none of this should be managed without a physician. Eterna Femme's KLOW protocol requires a comprehensive intake evaluation, and candidacy is not assumed. Women with active autoimmune conditions, those on copper-restricted therapeutic regimens, and women with active malignancy are not appropriate candidates. Your physician determines fit — not a quiz.
Cycle Structure
KLOW is a cycled protocol — not a continuous one. The 8-week active phase is the therapeutic window: peptide signaling cascades peak within the first two weeks and sustain through week eight. The 2-week washout period prevents receptor desensitization and allows the body's endogenous signaling to reassert itself. This is not a limitation; it is how peptide protocols achieve durable effects rather than temporary suppression of symptoms.
At this cadence — 8 weeks on, 2 weeks off — you complete approximately 5.5 cycles per year. Most women run 2–4 cycles before assessing outcomes with their physician; some continue indefinitely on a maintenance schedule.
Choose Your Tier
Same 8-week ON / 2-week OFF protocol at every tier. Pricing confirmed for current cycle.
Who This Is For
You've read enough to know that collagen loss, inflammatory signaling, tissue repair capacity, and structural remodeling are all declining at once — and you want a protocol that addresses all four simultaneously, not sequentially.
Skin that feels thinner. Joints that are less forgiving. Healing that takes longer. Connective tissue that doesn't bounce back the way it once did. These are the specific changes KLOW is designed to address at the cellular level.
BPC-157 improved your recovery but didn't address the inflammatory baseline. Or GHK-Cu helped skin but didn't touch joint discomfort. KLOW is where women go when they need the full spectrum.
KLOW is Eterna Femme's most complex protocol. You value physician oversight, individualized dosing, and a cycle structure designed around how peptides actually work — not a subscription auto-refill with no clinical follow-through.
This protocol is not appropriate for:
Women who are pregnant or planning pregnancy; those with active malignancy or a history of hormone-sensitive cancers; individuals on anticoagulant therapy or copper-restricted therapeutic regimens; anyone with active autoimmune conditions that have not been stable for at least 12 months. KLOW's multi-peptide complexity makes rigorous screening non-negotiable. Your intake physician will evaluate each contraindication before the protocol begins — not as a formality, but as clinical practice.
Investment
Same proven 8-week ON / 2-week OFF protocol at every tier. Choose the commitment that fits your plan.
Single Cycle
Start with one protocol cycle. Assess, then decide.
One-time · No commitment
Start Consultation →Save $15
3-Cycle Prepay
Three cycles with a modest discount — commitment with flexibility.
$675 total · Prepaying all 3 cycles
Start Consultation →6-Cycle Subscription
Maximum discount. Full year of physician-supervised protocol.
$1,320 total · ~5.2 cycles/year
Start Consultation →All tiers include the complete quad-peptide compound, compounding pharmacy fees, and physician oversight. Pricing confirmed for current cycle; subject to change as supplier costs finalize. No hidden lab fees, no separate billing for check-ins.
Take the First Step
Complete a brief intake form. A member of the Eterna Femme clinical team will review your profile and schedule a consultation with a licensed prescribing physician. KLOW candidacy involves additional screening — expect a thorough evaluation. No obligation. No pressure. Just clarity on whether this protocol is right for you.
Most women hear back from the clinical team within one business day. All intake information is handled under strict HIPAA-compliant protocols. · View all pricing
Limited Cohort
We open a limited number of physician-reviewed slots each cycle. Add your email to be notified when the next cohort window opens — and receive a short note from our founder on what to expect.
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Watch your inbox — we'll be in touch when the next cohort opens.
Explore the Full System
Cellular repair, lean tissue preservation, and metabolic momentum anchored by BPC-157.
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Explore Protocol →Quad-peptide regeneration: KPV + GHK-Cu + BPC-157 + TB-500. The premium protocol for comprehensive cellular renewal.
Current Protocol