Research use only. Nothing on this page is medical advice, and KLOW isn’t approved for human use in any country.
KLOW peptide is GHK-Cu, BPC-157, TB-500 and KPV in a bottle. Researched for skin, hair, joints, gut and injury recovery. New trend in peptide research.
Where to buy KLOW: our top picks
Prices checked 24 September 2026
Amino Club
KLOW 80 mg · GHK-Cu / BPC-157 / TB-500 / KPV
With code FALL35 (sale ends early October)
- Lot KLW0002: 99.85% HPLC, 83.87 mg measured
- Heavy metals, sterility, endotoxin and fentanyl tested
- Ships same day (3 pm ET cutoff), free shipping over $100
Elite Edge Biotech
KLOW 80 mg · GHK-Cu / BPC-157 / TB-500 / KPV
50% off list price
- All 4 peptides confirmed by mass spec (MZ Biolabs)
- Per-peptide peak areas published on the COA
- 99.82% purity, lot 2026-05-28
Platinum Biolabs
KLOW 80 mg · GHK-Cu / BPC-157 / TB-500 / KPV
5 to 15% off at 3+ vials
- Ships today, 1 to 2 day delivery from Houston, TX
- Purity and endotoxin COAs on the product page
- 30-day returns
Ascension Peptides
KLOW 80 mg · GHK-Cu / BPC-157 / TB-500 / KPV
Use code NALEI at checkout · up to 10% off at 10 vials
- Kovera Labs batch COA (tested 3 July 2026)
- Same-day shipping on orders before 2 pm CST
- Free shipping over $250
All four sell the standard 50/10/10/10 mg blend for laboratory research use only. Before you pick one, check how their certificates stack up in the COA section below.
KLOW Peptide
Quick facts| Components | GHK-CuBPC-157TB-500KPV TB-500 is a thymosin beta-4 fragment |
|---|---|
| Ratio | 50 / 10 / 10 / 10 mgGHK-Cu 62.5% · BPC-157, TB-500 and KPV 12.5% each |
| Total per vial | 80 mg |
| Form | Lyophilized (freeze-dried) powder, blue when it contains real GHK-Cu |
| Routes studied | None for the blend. The components alone have been studied topically, by injection, orally and rectally, in animal or small human studies |
| FDA status | Not approved. BPC-157, TB-500 and KPV passed an FDA advisory vote on compounding in July 2026, but there’s no final rule yet |
| Vendor price | $65 (with a sale code) to $195 per 80 mg vial (nine US vendors, September 2026) |
What is KLOW peptide?
The GLOW stack with the anti-inflammatory tripeptide KPV added.
KLOW blend or KLOW stack, is cheaper and easier to handle. Some people misspell it as “clo peptide,” which confuses beginners.
Researched for tissue repair, inflammation, and skin remodelling.
Ratio is locked at 50/10/10/10. The COAs published by suppliers are hard to verify for each single peptide in the KLOW blend.
Inside KLOW: the 4 peptides and their ratio
| Peptide | mg per vial | % of blend | What it’s studied for | Our guide |
|---|---|---|---|---|
| GHK-Cu (copper tripeptide) | 50 | 62.5% | Collagen synthesis, wound healing, skin remodelling | GHK-Cu copper peptide |
| BPC-157 (15-amino-acid gastric peptide) | 10 | 12.5% | Tendon, ligament, muscle and gut healing (mostly rodent) | where to buy BPC-157 |
| TB-500 (thymosin beta-4 fragment) | 10 | 12.5% | Cell migration, angiogenesis, wound repair | TB-500 |
| KPV (Lys-Pro-Val, from α-MSH) | 10 | 12.5% | Gut and skin inflammation (cell and animal models) | KPV peptide |
| Total | 80 | 100% |
GHK-Cu is a tripeptide bound to copper. Found naturally in the body. Declines with age. Handles collagen, elastin, and glycosaminoglycan production. Akso adjust enzymes that break down those processes.
BPC-157 is a synthetic peptide made of 15 amino acids and a protein sequence found in human gastric juice. Stimulates blood vessel growth (angiogenesis) in animals through VEGFR2 and nitric oxide signals.
TB-500 is a synthetic fragment of thymosin beta-4. An actin-binding protein released by tiny cell fragments (platelets) in your blood. Platelets help stop bleeding and repair damaged tissue.
KPV is made up of the last three amino acids from a hormone involved in pigmentation and inflammation. It keeps anti-inflammatory signals but has no tanning effects.
Why GHK-Cu makes up 62% of the blend
Put on your marketing hat for a second and sit up straight.
GHK-Cu is the cheapest to produce of all three in the KLOW blend. You can get a vial for meekly $20 vs $30-35 for 10mg for the other peptides.
The KLOW blends mentioned here offer the best prices. They are tested by reliable labs.
KLOW peptide benefits & Scientific Study
Hair growth
GHK-Cu has some evidence for hair growth. More support for topical use than injection. Animal studies show it can enlarge follicles and stimulate growth. Studies on injection showed hair growth. It included copper tripeptide-1 and five other growth factors and peptides. Klow peptide blend is a new combination that hasn’t been researched enough.
Skin and acne
Human studies show that GHK-Cu in creams can tighten and firm your skin. This helps reduce fine lines and hyperpigmentation. For those looking into the KLOW blend to enhance skin, try GHK-Cu creams and serums.
Joints and arthritis
BPC-157 has a big pile of animal data but almost no human evidence. Finding on animal studies are better for tendon, ligament, muscle and bone healing. Among 12 people who got BPC-157 for knee pain, 11 reported serious improvements.
KPV has been shown to reduce inflammatory and cartilage-degrading responses in human chondrocytes. The closest data is on protected cartilage cells.
Psoriasis and inflammation
KPV shows promising anti-inflammatory effects but not for psoriasis. Supresses NF-κB and MAPK signals in human intestinal and immune cells. Reduces inflammation in animals. Researchers say KPV may help with inflammatory skin diseases. It acts as a melanocortin peptide and has anti-inflammatory effects.
Gut
Promising for animals but not proven for humans. Oral KPV reduced colitis in multiple mice. BPC-157 has more animal evidence on colitis, esophagitis, fistulas and intestinal healing.
Is KLOW supposed to be blue?
Yes, because real KLOW is blue because of legit pure GHK-Cu. It’s around 62.% of the KLOW blend.
A white or colourless KLOW peptide vial means it’s disposable garbage. Watch signs:
- White or colourless means little or zero GHK-Cu.
- A green or brown tint can mean degradation or contamination.
- Cloudiness or floating particles that don’t clear after a gentle swirl point to poor solubility, degradation, or contamination. Don’t use it.
Learn how to store peptides properly.
KLOW side effects and safety
Klow blend has no safety data itself, so we need to look at each peptide inside.
- Injection-site redness, sensitivity or mild swelling
- Mild fatigue, headache or vivid dreams
- Brief changes in digestion or appetite
- Light-headedness
Rare or theoretical:
- Allergic reactions to any component or to contaminants
- Infection from non-sterile product or poor technique
- Copper accumulation with long, uninterrupted cycles
- Vision changes. People search for this a lot, but we found no published report linking any KLOW component to vision problems. Treat any change in your vision as a reason to stop and see a doctor.
Contamination carries the real risk. Serious side effects come from BPC-157 if it’s from a trash vendor. There are over 200 peptide vendors, and be sure that many of them are harmful.
For KLOW peptide blends, you must look at the sterility and endotoxin results on the COA before looking at purity numbers.
Who should avoid it
Anyone with a current or past cancer
BPC-157, thymosin beta-4 and GHK-Cu all promote angiogenesis, the growth of new blood vessels. Tumours depend on angiogenesis too, and no study has ruled out that these peptides could help a tumour grow.
Pregnant or breastfeeding women
There is currently no adequate safety data for use during pregnancy or breastfeeding.
People with Wilson’s disease
The same caution applies to other disorders involving abnormal copper handling, given the amount of GHK-Cu contained in the blend.
Tested athletes
TB-500 is prohibited by WADA, and BPC-157 is also prohibited in tested sport.
KLOW vs GLOW (and the Wolverine stack)
| Blend | Components | Typical total | What it adds | Typical price |
|---|---|---|---|---|
| KLOW | GHK-Cu 50 + BPC-157 10 + TB-500 10 + KPV 10 mg | 80 mg | KPV’s anti-inflammatory signalling | $65 to $195 |
| GLOW | GHK-Cu 50 + BPC-157 10 + TB-500 10 mg | 70 mg | Skin and repair stack, no KPV | $89 to $110 at Luxe |
| Wolverine | BPC-157 + TB-500 (commonly 10 + 10 mg) | 10 to 20 mg | Repair only, no copper | Varies |
Is KLOW better than GLOW? Only if you solely want KPV. That extra 10 mg KPV is the only difference between the two blends. Most evidence is from gut and inflammation models, not skin. GLOW gives you the same GHK-Cu, BPC-157, and TB-500. And for injury research without the copper, the Wolverine stack has no GHK-Cu at all.
KLOW vs buying the four peptides separately
We compared both options from the cheapest but reliable vendor. The blend is cheaper.
| Option | Contents | Price | Price per mg |
|---|---|---|---|
| KLOW blend | 80 mg in one vial | $70 | $0.88 |
| Separate vials | GHK-Cu 50 mg ($20) + BPC-157 10 mg ($30) + TB-500 10 mg ($35) + KPV 10 mg ($35) | $120 | $1.50 |
How to check a KLOW vial using its COA
Most KLOW certificates can’t tell you whether your vial contains 50/10/10/10. A standard HPLC purity figure measures how much of the detected peptide material is intact peptide. With four peptides in the vial, a single “99.9% purity” number says nothing about how much of each one is there. The best peptide companies must show NET content and make sure its free from toxins. A vial could hold 70 mg of GHK-Cu and 2 mg of BPC-157 and still sail through at 99%.
We went through the public KLOW certificates from seven US vendors on 23 and 24 September 2026:
| Vendor | Latest COA lab | Purity | Per-component amounts? | What the certificate shows |
|---|---|---|---|---|
| Verified Peptides | Janoshik | Pass (lot KL08260580C) | Measured | GHK-Cu 58.07, BPC-157 11.35, TB-500 11.51, KPV 11.13 mg: every component 11 to 16% over label. Endotoxin pass. |
| Luxe Peptides | Freedom Diagnostics; Janoshik | 99.565% | Measured | Freedom (31 Mar 2026): GHK-Cu 30.55, KPV 22.90, BPC-157 18.54, TB-500 9.96 mg. Ten Janoshik lots: GHK-Cu 48.06 to 65.23 mg. |
| Elite Edge Biotech | MZ Biolabs | 99.82% (lot 2026-05-28) | Peak-area share, not mg | All four identified by mass spectrometry. Peak areas: GHK-Cu 57.22%, BPC-157 16.34%, KPV 16.17%, TB-500 10.09%. The COA notes peak area is not an mg-for-mg measure. |
| Amino Club | ISO 17025 lab (not named on page) | 99.85% (lot KLW0002) | Total only | Net content 83.87 mg measured for the whole vial. Heavy metals, sterility, endotoxin and fentanyl screen passed. |
| Simple Peptide | Not named on page | 99.5% | No | Single total purity only. |
| Oath Research | Not named on page | 99.650% (batch D3226013) | No | Single total purity only. |
What to look for on a KLOW certificate
All four peptides identified
Look for identification by HPLC retention time, mass spectrometry, or another clearly stated analytical method.
Actual peptide quantity measured
The certificate should report the milligrams of each peptide measured, rather than simply calculating amounts from the blend’s stated ratio.
Traceable lot and laboratory
The lot number should match your vial, and the testing laboratory should be independently verifiable.
Heavy-metal testing
Look for a dedicated heavy-metals panel using ICP-MS or another validated elemental-analysis method.
Our guide on how to read a peptide COA walks through the whole process.
KLOW price and where to buy
Every vendor’s label says 80 mg, yet prices vary almost threefold:
| Vendor | 80 mg price | $ per mg | COA lab | Per-component COA? |
|---|---|---|---|---|
| Amino Club | $64.99 with code FALL35 (list $99.99) | $0.81 | ISO 17025 lab | Total only |
| NextGen Peptides | $70 | $0.88 | ILS Laboratories | Calculated only |
| Elite Edge Biotech | $90 (sale; list $180) | $1.13 | MZ Biolabs | Peak-area share |
| Luxe Peptides | $100 (sale; list $120) | $1.25 | Freedom Diagnostics, Janoshik | Yes |
| Ascension Peptides | $120 (sale; list $199.99), code NALEI | $1.50 | Kovera Labs | Not stated on page |
| Verified Peptides | $130 | $1.63 | Janoshik | Yes |
| Platinum Biolabs | $133 | $1.66 | Not named on page | Not stated on page |
| Simple Peptide | $140 | $1.75 | Not named | No |
| Oath Research | $195 (sale; list $215) | $2.44 | Not named | No |
Our best peptide vendors list has more options to compare.
KLOW results and user reports
See user reports as stories, not evidence. There are no controls and no blinding test on KLOW blend.
People who see results rarely share it online. A report also can’t replace the effect from placebo, diet, or training. Or the other peptides people often use simultaneously.
KLOW peptide FAQ
Is KLOW safe?
Nobody knows. The blend has never had a safety study, and each component has only limited human data. The main known risks are contamination from unregulated manufacturing, injection-site reactions, and a theoretical risk that angiogenesis could feed tumour growth. Anyone with a cancer history should avoid it, and so should pregnant women and tested athletes.
How long does KLOW take to work?
No trial has looked at the blend, so there’s no data on timing. In topical GHK-Cu studies, collagen remodelling was measured over weeks. Be suspicious of anyone claiming results within a few days.
Is KLOW good for hair growth?
The evidence is weak. Copper peptides helped hair follicles grow in lab cultures. The best studies used AHK-Cu. No human trials have tested GHK-Cu or KLOW injections for hair loss. So, hair growth is still an unproven claim.
Can you take KLOW with NAD+?
No studies show a combination. There’s no known interaction between NAD+ and any KLOW component. Missing data doesn’t make it safe, though. Adding more compounds also makes it impossible to tell which one caused an effect or a side effect.
How much bac water for KLOW 80 mg?
Most people use 3 mL. That gives 26.7 mg/mL, so 10 units on a U-100 syringe delivers 2.67 mg of blend: 1.67 mg of GHK-Cu and 0.33 mg each of BPC-157, TB-500 and KPV. Use 2 mL if you want a stronger solution, or 4 mL for finer dosing.
Does KLOW need refrigeration?
Yes, once it’s reconstituted. Vendors recommend storing the powder at −20 °C away from light, and the mixed solution at 2 to 8 °C. Luxe Peptides says to use reconstituted KLOW within 14 days. Don’t freeze the mixed solution, and throw it out if it turns cloudy or changes colour.
Sources
- Pickart L, et al. GHK peptide as a natural modulator of multiple cellular pathways in skin regeneration. Biomed Res Int. 2015. doi:10.1155/2015/648108
- Pickart L. The human tri-peptide GHK and tissue remodeling. J Biomater Sci Polym Ed. 2008. doi:10.1163/156856208784909435
- Dou Y, et al. The potential of GHK as an anti-aging peptide. Aging Pathobiol Ther. 2020. doi:10.31491/apt.2020.03.014
- Pyo HK, et al. The effect of tripeptide-copper complex on human hair growth in vitro. Arch Pharm Res. 2007. doi:10.1007/BF02978833
- Vasireddi N, et al. Emerging use of BPC-157 in orthopaedic sports medicine: a systematic review. HSS J. 2025. doi:10.1177/15563316251355551
- McGuire FP, et al. Regeneration or risk? A narrative review of BPC-157 for musculoskeletal healing. Curr Rev Musculoskelet Med. 2025. doi:10.1007/s12178-025-09990-7
- Lee E, Padgett B. Intra-articular injection of BPC 157 for multiple types of knee pain. Altern Ther Health Med. 2021. PMID 34324435
- Seiwerth S, et al. BPC 157 and standard angiogenic growth factors. Curr Pharm Des. 2018. doi:10.2174/1381612824666180712110447
- Józwiak M, et al. Multifunctionality and possible medical application of the BPC 157 peptide. Pharmaceuticals. 2025. doi:10.3390/ph18020185
- Goldstein AL, et al. Thymosin β4: a multi-functional regenerative peptide. Expert Opin Biol Ther. 2012. doi:10.1517/14712598.2012.634793
- Treadwell T, et al. The regenerative peptide thymosin β4 accelerates the rate of dermal healing in preclinical animal models and in patients. Ann N Y Acad Sci. 2012. doi:10.1111/j.1749-6632.2012.06717.x
- Guarnera G, et al. The effect of thymosin treatment of venous ulcers. Ann N Y Acad Sci. 2010. doi:10.1111/j.1749-6632.2010.05490.x
- Dalmasso G, et al. PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation. Gastroenterology. 2008. doi:10.1053/j.gastro.2007.10.026
- Can VC, et al. Anti-inflammatory and chondroprotective effects of melanocortin peptides on LPS-activated chondrocytes. Eur J Pharmacol. 2020. doi:10.1016/j.ejphar.2020.172971
- Böhm M, Luger T. Are melanocortin peptides future therapeutics for cutaneous wound healing? Exp Dermatol. 2019. doi:10.1111/exd.13887
- STAT, 23 July 2026. FDA panel backs compounded BPC-157, KPV peptides.
- Buchanan Ingersoll & Rooney. FDA advisory committee voted yes on six peptides. Now what?
- NIH Office of Dietary Supplements. Copper fact sheet for health professionals.
- NextGen’s lot KLW-06 COA, ILS Laboratories, issued 8 June 2026.