Reviewed by the PeptideMind Team · Updated July 15, 2026

Kisspeptin Dosage Guide, Benefits & Side Effects

Kisspeptin triggers pulsatile GnRH release, restoring LH, FSH, and testosterone signaling, with lower OHSS risk than hCG in IVF research.

Chemical Makeup

Amino Acids

Kisspeptin

Asn

Position 1

Trp

Position 2

Asn

Position 3

Ser

Position 4

Phe

Position 5

Gly

Position 6

Leu

Position 7

Arg

Position 8

Phe

Position 9

Amino acid sequence

AsparaginePosition 1

TryptophanPosition 2

AsparaginePosition 3

SerinePosition 4

PhenylalaninePosition 5

GlycinePosition 6

LeucinePosition 7

ArgininePosition 8

PhenylalaninePosition 9

As seen on

Kisspeptin Dosage Guide for Sexual HealthKisspeptin Dosage Calculator

Kisspeptin helps stimulate a hormone (GnRH) that plays a key role in fertility.

Vial size

5 mg

Bacteriostatic water

3 mL

Dosing

100 mcg

Frequency

Daily

Cycle

4 weeks on / 4 weeks off

Benefit

Sexual Health

Explore calculators

Basic Dosage Calculator

Calculate peptide doses with our visual syringe guide.

Peptide per vial

Target research quantity

Bac water added

What is Kisspeptin?

Kisspeptin is a naturally occurring hormone that acts as the body's master switch for reproductive signaling, sitting right at the top of the chain that controls fertility hormones. It tells the brain to release the hormone (GnRH) that ultimately triggers the release of the two key reproductive hormones, LH and FSH. It's being studied clinically for fertility disorders, including certain causes of infertility, PCOS, low testosterone, and as a gentler way to trigger ovulation during IVF.

Sexual

Research targets include libido, reproductive hormone signaling, and sexual function.

Hormonal

Research targets include endocrine signaling and hormone receptor pathways.

Hormonal

kis

Hormonal

Is Kisspeptin FDA approved?

Kisspeptin is not an FDA-approved drug. It is intended for research purposes only and is not approved for human consumption, diagnostic, or therapeutic use.

Research Use Only

Kisspeptin has not been evaluated by the FDA for safety or efficacy in humans.

No Clinical Oversight

Not manufactured under FDA-regulated quality or clinical standards.

Unregulated Sourcing

Purity, dosing, and sourcing are not verified through FDA testing or oversight.

A smartphone screen displaying FDA status for a drug, indicating "FDA approved drug: No" and "Classification: Research use only." A banner notes "Research Only" with the disclaimer "not for human use," emphasizing its intended use for laboratory and analytical purposes.

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How Does Kisspeptin Work?

It attaches to a receptor on brain cells that sit at the very top of the reproductive hormone chain, kicking off a signal that tells them to release the hormone (GnRH) that ultimately triggers the two key fertility hormones, LH and FSH. This puts it in a position to influence the entire reproductive hormone cascade from the very first step.

Sits at the top of the chain

Attaches to a receptor on brain cells at the very top of the fertility hormone cascade.

Kicks off GnRH release

Triggers the release of the hormone that leads to LH and FSH.

Influences the whole system

Positioned to affect the entire reproductive hormone cascade from step one.

How to reconstitute Kisspeptin

View guide

The materials you'll need and step-by-step instructions for safely mixing Kisspeptin with bacteriostatic water.

Materials needed

Your Kisspeptin vial (lyophilized)

Alcohol swabs

Bacteriostatic sterile water

3 mL syringes (Luer Lock tip)

25G or 27G needles (Luer Lock). Other gauges may also be acceptable.

Sharps container (optional)

Remove the caps

Remove the caps from both your Kisspeptin vial and your bacteriostatic water vial.

Sanitize the rubber stoppers

Wipe down the rubber stoppers on both vials with alcohol swabs and let them dry for about 3 minutes.

Attach the needle

Take your 3 mL syringe and needle. Twist the needle's plastic hub into the Luer Lock tip on the syringe to secure it.

Draw the bac water

Pull back on the plunger to draw your desired volume of bacteriostatic water. If you overfill, just push the excess back in until you reach the right marker on the syringe.

How much bac water? Kisspeptin typically comes in a 5 mg vial. We recommend 3 mL of bacteriostatic water, though anywhere between 1 mL and 3 mL is acceptable. For larger vials you can use up to 5 mL — more bac water makes microdosing easier, but insulin needles usually max out at 1 mL per injection. That means a lot of bac water might force you into multiple injections to hit your target dose. Unless you're microdosing, 2 mL per vial is a solid rule of thumb.

Insert the needle into the Kisspeptin vial

With the bac water in your syringe, insert the needle into the Kisspeptin vial at a slight angle to avoid pressure buildup.

Use a thin needle: Stick to 25G or higher to avoid damaging the rubber stopper. Higher gauge means a thinner needle.

Release the water gently

Let the water run gently down the side of the vial. Don't inject it forcefully.

Heads up: Sometimes the plunger pushes itself in as soon as the needle enters the vial. Hold the plunger back so you have full control over how fast the bac water enters.

Swirl to dissolve

Avoid shaking. Gently swirl, flip, and roll the vial to dissolve the powder.

Be patient: This usually takes 2 to 5 minutes of consistent swirling, mixing in a circular motion, and gently flipping the vial up and down. The water needs to run through the powder many times to fully dissolve it. Don't shake or get aggressive with it.

Check for full dissolution

The solution should be clear with no visible particles. If it's cloudy or clumpy, wait a minute and repeat the swirling step.

Cap, dispose, and store

Once you're done, cap the needle and dispose of it (ideally in a sharps container). Store the reconstituted Kisspeptin vial in the fridge whenever it's not in use. It will stay good for approximately 30 days.

How to Store Kisspeptin

Freeze the dry powder somewhere dark and dry. Once mixed with bacteriostatic water, refrigerate and use within about a month, avoiding repeated freezing and thawing.

Lyophilized Storage

-20°C in dark, dry conditions.

Reconstituted Storage

With bacteriostatic water, 2–8°C for up to 4 weeks.

Handling Notes

Avoid freeze-thaw cycles.

A smartphone displaying a "Storage Guide" for peptides, indicating a safe storage temperature range of 2–8°C, with warnings to keep away from light, heat, and freezing. The background is light blue, and additional tips on protecting the peptides are visible below the temperature range.

What Are the Benefits of Kisspeptin?

What research says it may help with, and how it works in the body.

reproductive

: Helps eggs mature for fertility treatment, with a 45% live birth rate in studies and no cases of severe ovarian overstimulation syndrome, making it a safer option than the commonly used hormone hCG.
: Helps restore the natural rhythm of reproductive hormone release in women whose periods have stopped due to a brain-signaling issue (hypothalamic amenorrhea).
: Kick-starts the body's reproductive hormone system by activating a dormant hormone pathway (the GnRH axis), helping in cases where this system isn't working properly, whether from an underlying condition or present from birth.

sexual function

: Influences how the brain processes sexual attraction, and in studies people reported feeling more attractive.
: Affects how the brain processes sexual arousal, and increased penile firmness/swelling by 56% compared to placebo in studies.

metabolic

: Early research (in animals) suggests it may affect how many calories the body burns and how active it is.

What Are the Side Effects of Kisspeptin?

Who should avoid it, warning signs to watch for, and what to know before combining it with other compounds.

Who Should Avoid It

: Not recommended during pregnancy or breastfeeding
: Caution with cardiovascular disease history
: Daily dosing causes receptor desensitization

Stop Right Away If You Notice

: Ovarian hyperstimulation signs: severe pelvic pain, bloating, nausea
: Chest pain or cardiovascular symptoms
: Severe headaches or visual disturbances
: Persistent injection site reactions

Milder Signs to Watch For

Discoloration or yellowing indicates oxidation/degradationCloudy after reconstitution indicates degradation or contamination

Was it helpful?Yes

How Long Should a Kisspeptin Cycle Last?

This breaks down how long a typical Kisspeptin cycle runs and what research suggests happens at each stage. Research shows that staying on a peptide continuously, without a break, may make it less effective over time.

That's why most research protocols build in a break between cycles, often called a washout period, to let the body reset before starting again.

Week 0-0: LH surge peaks at 3-5x baseline
Week 0-0: LH returns to baseline
Day 1-2: Testosterone/estradiol increase in response to LH
Week 2-4: Potential improvements in sexual function and libido

Cheat Sheets Featuring Kisspeptin

See how Kisspeptin fits into a broader research stack with these free downloadable cheat sheets. Each one includes reference dose ranges, dosing frequency, and half-life for every peptide it covers. For research purposes only.

View all

Hormonal Peptide Cheat Sheet

5 peptides

Master Peptide Cheat Sheet

78 peptides

Sexual Peptide Cheat Sheet

6 peptides

Kisspeptin Research References

It is a phase 2 compound

4Research references

Kisspeptin

Kisspeptin is a phase 2 compound

Kisspeptin for Hypoactive Sexual Desire Disorder in Men

Modulated sexual brain activity; increased penile tumescence by 56% vs placebo. JAMA Network Open.

2023

Kisspeptin for HSDD in Women

Modulated sexual and attraction processing; increased self-reported sexiness. JAMA Network Open.

2022

Kisspeptin as IVF Ovulation Trigger

45% live birth rate with zero severe OHSS; safer than hCG trigger. Journal of Clinical Investigation.

2017

Intranasal Kisspeptin Administration

Non-invasive delivery with rapid gonadotropin stimulation; stable 60-day formulation. eBioMedicine.

2025

Frequently Asked Questions About Kisspeptin

Straight answers on reconstitution, dosing, and safety, everything you need to research with confidence. For research reference only.

Kisspeptin is a naturally occurring neuropeptide (encoded by the KISS1 gene) that acts as an upstream regulator of the reproductive endocrine system. It binds to the KISS1R (GPR54) receptor on GnRH neurons in the hypothalamus, triggering the release of gonadotropin-releasing hormone (GnRH). GnRH then stimulates the pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn drive testosterone production in men and support ovulation and estrogen/progesterone regulation in women. Because of this position 'upstream' of GnRH, kisspeptin is often described as a master regulator of the hypothalamic-pituitary-gonadal (HPG) axis.

Academic and clinical research has explored kisspeptin for several applications: stimulating LH pulsatility and testosterone in men with low testosterone or hypothalamic hypogonadism, triggering final oocyte maturation as an alternative to hCG in IVF protocols, restoring menstrual cycling in women with hypothalamic amenorrhea, and improving sexual desire and brain processing of sexual cues in people with hypoactive sexual desire disorder (HSDD). Researchers at institutions such as Imperial College London have dosed kisspeptin in several hundred human research subjects across these studies. It does not have an FDA-approved clinical indication and is not a prescribed medication.

Human trials have used a range of doses depending on the route and endpoint, from low intravenous infusion doses used to study acute LH/testosterone pulses up to subcutaneous doses in the range of roughly 100-300 mcg per administration in non-clinical, research-vendor protocols, often given once daily or every other day over cycles of several weeks. Because dosing in the research literature varies substantially by study design (bolus injection vs. continuous infusion, IV vs. subcutaneous), there is no single agreed-upon 'standard' dose, and any dosage figures from peptide vendor sites are self-reported research conventions rather than clinically validated recommendations.

In published human studies, kisspeptin has generally been reported as well tolerated at studied research doses, with mild injection-site reactions being the most commonly noted issue. Because it directly drives LH/FSH release, theoretical concerns include disruption of normal hormone pulsatility, menstrual cycle changes, or altered sex-hormone balance with repeated or high-dose use, though the magnitude and reversibility of these effects with chronic use are not well characterized. Kisspeptin receptors are also expressed in non-reproductive tissues (including some involved in vascular and metabolic signaling), so effects outside the HPG axis have not been fully ruled out. As with all research peptides, safety data outside of controlled clinical trial settings is limited.

Kisspeptin is sold by peptide vendors labeled 'for research use only' or 'not for human consumption.' It has not been approved by the FDA or other regulatory agencies for any clinical indication, and it is not a prescription medication. Its legal status for purchase varies by jurisdiction, but products marketed this way are not intended for personal use, self-administration, or human consumption, and any use outside of a licensed clinical trial falls outside their labeled and regulatory-approved purpose.

Kisspeptin is typically supplied as a lyophilized (freeze-dried) powder that should be stored in a freezer (around -20°C) for long-term stability or refrigerated (2-8°C) for shorter-term storage, protected from light and moisture. It is reconstituted by adding bacteriostatic or sterile water to the vial to reach a target concentration. Once reconstituted, research protocols commonly recommend keeping the solution refrigerated and using it within about 30 days, as peptide solutions degrade faster once mixed.

Kisspeptin is frequently discussed alongside PT-141 (bremelanotide) in peptide-vendor and biohacking contexts, since both have been studied in relation to sexual desire and arousal through different pathways (kisspeptin via the HPG/GnRH axis, PT-141 via melanocortin receptors in the brain). Vendors selling 'stacks' typically suggest spacing the two injections apart (commonly around 30 minutes) rather than administering them simultaneously. There is limited independent clinical research specifically evaluating the combination, so claims about added benefit from stacking are largely anecdotal or vendor-driven rather than established in peer-reviewed trials.

A randomized clinical trial in men with hypoactive sexual desire disorder (HSDD) found that kisspeptin administration was associated with increased penile tumescence, changes in brain activity related to sexual processing, and reduced sexual aversion compared to placebo. These findings come from a controlled research setting using clinical-grade material and monitoring, and should not be interpreted as evidence that unsupervised use of research-grade kisspeptin will reliably reproduce the same effects.

Kisspeptin Dosage Guide, Benefits & Side Effects

Chemical Makeup

Kisspeptin Dosage Guide for Sexual HealthKisspeptin Dosage Calculator

What is Kisspeptin?

Is Kisspeptin FDA approved?

Our top-rated vendor

How Does Kisspeptin Work?

How to reconstitute Kisspeptin

How to Store Kisspeptin

What Are the Benefits of Kisspeptin?

reproductive

sexual function

metabolic

What Are the Side Effects of Kisspeptin?

Who Should Avoid It

Stop Right Away If You Notice

Milder Signs to Watch For

How Long Should a Kisspeptin Cycle Last?

Cheat Sheets Featuring Kisspeptin

Kisspeptin Research References

Frequently Asked Questions About Kisspeptin

What is Kisspeptin and how does it work?

What is Kisspeptin used for in research?

What is the typical Kisspeptin dosage used in research and vendor protocols?

What side effects or risks are associated with Kisspeptin?

Is Kisspeptin legal to buy, and is it approved for human use?

How is Kisspeptin stored and reconstituted?

Is Kisspeptin often combined with PT-141 or other peptides?

Does Kisspeptin help with libido or sexual dysfunction?

Kisspeptin Dosage Guide, Benefits & Side Effects

Chemical Makeup

Kisspeptin Dosage Guide for Sexual HealthKisspeptin Dosage Calculator

What is Kisspeptin?

Is Kisspeptin FDA approved?

Our top-rated vendor

How Does Kisspeptin Work?

Kisspeptin Targeted areas

How to reconstitute Kisspeptin

How to Store Kisspeptin

What Are the Benefits of Kisspeptin?

reproductive

sexual function

metabolic

What Are the Side Effects of Kisspeptin?

Who Should Avoid It

Stop Right Away If You Notice

Milder Signs to Watch For

How Long Should a Kisspeptin Cycle Last?

Related peptides

Cheat Sheets Featuring Kisspeptin

Kisspeptin Research References

Frequently Asked Questions About Kisspeptin

What is Kisspeptin and how does it work?

What is Kisspeptin used for in research?

What is the typical Kisspeptin dosage used in research and vendor protocols?

What side effects or risks are associated with Kisspeptin?

Is Kisspeptin legal to buy, and is it approved for human use?

How is Kisspeptin stored and reconstituted?

Is Kisspeptin often combined with PT-141 or other peptides?

Does Kisspeptin help with libido or sexual dysfunction?