Peptide Dosage Chart: Complete Dosing Guide for Every Peptide (2026)

If you are new to peptides, these terms appear throughout this guide. Bookmark this section.

Before your first injection, gather these items. Most are available from any pharmacy or medical supply store.

You do not need special training. Subcutaneous injection is the same technique diabetics use for insulin: pinch a fold of belly fat, insert the needle at a 45-degree angle, push the plunger, done. For a visual walkthrough, see the Peptide Injections: Complete Guide.

Here is the full process from opening a new vial to your first injection:

Step 1: Reconstitute. Remove the plastic cap from the vial. Wipe the rubber stopper with an alcohol swab. Draw bacteriostatic water into a syringe (typically 1 to 2 mL) and inject it slowly down the inside wall of the vial. Do not squirt it onto the powder.

Step 2: Mix gently. Swirl the vial between your fingers. Never shake. The powder should dissolve completely within 30 to 60 seconds, leaving a clear liquid. Refrigerate immediately.

Step 3: Calculate your dose. Use the Peptide Reconstitution Calculator. Enter the vial size (e.g., 5 mg), how much water you added (e.g., 2 mL), and the dose you want (e.g., 250 mcg). It tells you exactly how many units to draw.

Step 4: Draw. Wipe the vial stopper with a fresh alcohol swab. Insert the needle, turn the vial upside down, and draw the number of units the calculator told you.

Step 5: Inject. Wipe the injection site (belly, thigh, or upper arm) with an alcohol swab. Pinch the skin, insert at 45 degrees, push the plunger slowly, remove, and dispose of the needle in your sharps container.

That is it. The entire process takes under two minutes once you have done it twice. For detailed help with the math, see How to Reconstitute Peptides.

What it does: BPC-157 accelerates healing of tendons, ligaments, muscles, and gut tissue. It is the most popular peptide for injury recovery and the one most beginners start with. If you have a nagging injury that will not heal, this is likely where you should begin.

How it works: BPC-157 is a synthetic fragment of a protein naturally found in your stomach acid. It promotes new blood vessel growth at injury sites (angiogenesis) and reduces inflammation. A systematic review covering 36 studies from 1993 to 2024 (PMC 12313605) confirmed healing benefits across gut, musculoskeletal, and neurological tissue.

Dosing tiers:

Subcutaneous injection near the injury site delivers the fastest localized effect. Systemic injection (abdomen) also works because BPC-157 migrates to sites of inflammation. Oral dosing (500 mcg to 1 mg in capsules) targets gut-related conditions: IBS, leaky gut, NSAID-induced gastric damage.

A 2025 Phase I trial (Lee & Burgess, 2025) demonstrated that IV BPC-157 doses up to 20 mg were tolerated in healthy volunteers with no serious adverse events. This is 40 times the standard subcutaneous dose, suggesting a wide safety margin.

Related resources: BPC-157 Dosage Calculator | BPC-157 Profile | BPC-157 Side Effects

What it does: TB-500 heals injuries from the inside out. Unlike BPC-157 (which works best near the injury), TB-500 travels through your entire body and finds damaged tissue wherever it is. One injection in your belly can reach a torn shoulder, a bad knee, or an inflamed gut.

How it works: TB-500 is a synthetic fragment of Thymosin Beta-4, a protein your body uses to move healing cells to damaged areas and build new blood vessels. It works systemically: a single subcutaneous injection in the abdomen reaches damaged tissue throughout the body.

Dosing tiers:

The loading phase builds serum levels of thymosin beta-4 fragments. Skipping the loading phase is the most common dosing mistake. Maintenance alone is insufficient for acute injury healing.

TB-500 stacks with BPC-157 for what practitioners call the "Wolverine Stack." BPC-157 handles localized repair; TB-500 handles systemic inflammation and vascular remodeling. The combination is the most widely used recovery protocol in the peptide community.

Related resources: TB-500 Dosage Calculator | TB-500 Profile | TB-500 Dosage Chart

What it does: Semaglutide dramatically reduces appetite. You eat less because you genuinely feel full sooner. It is FDA-approved for weight loss (brand name Wegovy) and for diabetes (brand name Ozempic). In clinical trials, participants lost an average of 14.9% of their body weight over 68 weeks (published in the New England Journal of Medicine).

How it works: Semaglutide mimics a gut hormone called GLP-1. This hormone signals your brain to stop eating, slows down how fast food leaves your stomach, and improves how your body handles insulin.

Titration schedule:

Inject once weekly on the same day each week. Rotate injection sites (abdomen, thigh, upper arm). Nausea is the primary side effect during titration; it typically resolves within two to three weeks at each dose level.

Do not skip titration steps. Jumping from 0.25 mg to 1.0 mg triggers severe nausea and vomiting in most users. The four-week intervals at each dose level allow GI adaptation.

Related resources: Semaglutide Dosage Calculator | Semaglutide Profile

What it does: Tirzepatide is a stronger weight loss peptide than semaglutide. It targets two appetite hormones instead of one, producing more weight loss in clinical trials: 22.5% of body weight over 72 weeks. A 2025 head-to-head study confirmed it: tirzepatide users lost 20.2% vs 13.7% for semaglutide. FDA-approved as Mounjaro (diabetes) and Zepbound (obesity).

How it works: Tirzepatide activates both GIP and GLP-1 receptors simultaneously. Think of semaglutide as pressing one appetite-suppression button; tirzepatide presses two.

Titration schedule:

Each dose escalation occurs at four-week intervals minimum. Some practitioners hold patients at 10 mg if weight loss trajectory is satisfactory, reserving higher doses for plateaus.

Related resources: Tirzepatide Dosage Calculator | Tirzepatide Profile

What it does: Retatrutide is the most powerful weight loss peptide studied so far. It produced roughly 24% body weight loss in trials, more than semaglutide or tirzepatide. It is not yet FDA-approved (still in Phase 3 trials as of February 2026), so it is only available through research suppliers.

How it works: Retatrutide hits three targets instead of two: GIP, GLP-1, and glucagon receptors. The third target (glucagon) makes your body burn more calories even at rest, adding a fat-burning effect on top of appetite suppression.

Titration schedule:

Retatrutide's glucagon receptor activation provides an additional thermogenic effect absent from semaglutide and tirzepatide. This third pathway increases energy expenditure independent of appetite suppression. GI side effects parallel those of other incretin therapies: nausea, diarrhea, and constipation during dose escalation.

Related resources: Retatrutide Dosage Calculator | Retatrutide Profile

What it does: AOD 9604 helps burn fat without the side effects of full growth hormone. It tells fat cells to release stored energy. It does not affect blood sugar or cause growth-related side effects.

How it works: AOD 9604 is a small piece of human growth hormone (amino acids 177-191), specifically the fat-burning fragment. It triggers lipolysis (fat breakdown) without raising IGF-1 levels, which is the main concern with full HGH.

Dosing tiers:

Fasted administration is standard protocol. AOD 9604's lipolytic activity is blunted by insulin. Inject at least 30 minutes before eating. Clinical data supporting fat loss in humans remains limited; most evidence comes from in vitro and animal models.

Related resources: AOD 9604 Profile

What it does: HGH Fragment 176-191 burns fat, similar to AOD 9604. The two are closely related (same region of growth hormone, slightly different structure). You take it twice a day on an empty stomach for maximum effect.

How it works: This fragment is the fat-burning tail of human growth hormone. It activates the same fat-cell receptor pathway (beta-3 adrenergic) as AOD 9604, triggering stored fat to be released and burned.

Dosing tiers:

Splitting the dose into two administrations (AM and PM) maintains more consistent lipolytic signaling across a 24-hour period. As with AOD 9604, avoid eating within 30 minutes of injection. Fasted-state dosing is non-negotiable for this peptide.

Related resources: HGH Fragment Dosage Calculator | HGH Fragment Profile

What it does: 5-Amino-1MQ helps your body burn fat instead of storing it. The big advantage: you swallow a capsule instead of injecting. No needles, no reconstitution, no syringes.

How it works: Your fat cells overproduce an enzyme called NNMT that promotes fat storage. 5-Amino-1MQ blocks this enzyme, shifting your metabolism toward burning fat and increasing NAD+ (a molecule involved in energy production). Animal studies (Neelakantan et al., Biochemical Pharmacology, 2018) showed significant body fat reduction without changes in food intake.

Dosing tiers:

Morning dosing is preferred because of its stimulatory effect on cellular metabolism. Human clinical data remains preliminary.

Related resources: 5-Amino-1MQ Profile

What they do: CJC-1295 and Ipamorelin are almost always used together. The combination is the most popular growth hormone stack and the best starting point for anyone interested in GH peptides. Benefits include deeper sleep, faster recovery, fat loss, and improved skin quality.

How they work: Your body releases growth hormone through a two-step process: one signal says "make GH" (that is CJC-1295's job) and another says "release it now" (that is Ipamorelin's job). Using both together produces a much bigger GH pulse than either one alone. Teichman et al. (JCEM, 2006, PMID: 16352683) confirmed dose-dependent GH elevation in healthy adults.

Combined dosing tiers:

Administer on an empty stomach. Carbohydrates and fats blunt GH release. The pre-bedtime dose is the most important because it amplifies the natural nocturnal GH pulse. Cycle for 8 to 12 weeks, then take 4 weeks off to prevent desensitization.

Related resources: CJC-1295 + Ipamorelin Calculator | CJC-1295 Profile | Ipamorelin Profile

What it does: Sermorelin boosts growth hormone with a single daily injection before bed. It is gentler and slower-acting than CJC-1295/Ipamorelin, making it a good choice for people who want a low-maintenance GH protocol. Results build gradually over months: better sleep first, then body composition, then skin improvements.

How it works: Sermorelin is a shortened version of the hormone your brain uses to trigger GH release. The FDA approved it in 1997 for children with growth hormone deficiency. It was discontinued in 2008 due to manufacturing issues (not safety concerns) and is still available through compounding pharmacies.

Dosing tiers:

Sermorelin protocols run longer than CJC/Ipamorelin cycles. Three to six months is standard because sermorelin's GH elevation is more gradual and cumulative. Results build over time: improved sleep quality in weeks two to four, body composition changes by month two, skin and recovery improvements by month three.

Related resources: Sermorelin Profile

What it does: MK-677 raises growth hormone levels with a single pill before bed. No injections. No mixing. Swallow a capsule and your GH and IGF-1 levels stay elevated for 24 hours. This makes it the easiest GH-boosting option for people who dislike needles.

How it works: MK-677 mimics ghrelin, the "hunger hormone." When ghrelin signals rise, your pituitary releases more growth hormone. MK-677 tricks this system into producing a sustained GH elevation without actual hunger (though appetite does increase).

Dosing tiers:

Bedtime dosing is standard. MK-677 amplifies the nocturnal GH pulse and increases appetite within one to two hours of ingestion. Taking it before bed sidesteps hunger-related compliance issues. Water retention and mild joint stiffness are common at 25 mg; these effects are dose-dependent and resolve with dose reduction.

MK-677 increases fasting blood glucose and insulin levels. Monitor HbA1c during extended cycles. This is not a benign oral supplement: treat it with the same caution as any GH-elevating compound.

Related resources: MK-677 Profile

What it does: IGF-1 LR3 directly builds muscle. While other GH peptides work by raising growth hormone (which then raises IGF-1), this one skips the middleman and delivers IGF-1 directly. It is the most potent peptide for muscle growth but also carries more risk than the others in this section.

How it works: IGF-1 LR3 is a modified version of insulin-like growth factor 1, engineered to last 20 to 30 hours in the body instead of 12 minutes. It stimulates muscle cell growth and prevents muscle breakdown.

Dosing tiers:

Post-workout timing maximizes the anabolic window when muscle tissue is primed for nutrient uptake and repair. Hypoglycemia is a real risk at doses above 60 mcg, particularly when combined with insulin or during caloric restriction. Keep fast-acting carbohydrates accessible during the first hour after injection.

Cycle length is short: 4 to 6 weeks maximum. Prolonged IGF-1 LR3 use downregulates IGF-1 receptors. Extended breaks between cycles (at least 4 weeks) are mandatory for receptor resensitization.

Related resources: IGF-1 LR3 Profile | IGF-1 LR3 Dosage Protocol

What it does: GHK-Cu rebuilds collagen, the protein that keeps your skin firm, your joints smooth, and your hair healthy. Your body naturally produces GHK-Cu, but levels drop by 60% between age 20 and 60. Supplementing it reverses some of that decline. Many people notice firmer skin, faster wound healing, and thicker hair.

How it works: GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) activates over 4,000 genes involved in tissue remodeling. It stimulates collagen production, reduces inflammation, and promotes wound healing. Available as both an injection and a skin cream.

Dosing tiers:

Topical application (creams containing 1-3% GHK-Cu) targets skin-specific aging: wrinkles, laxity, and hyperpigmentation. Injectable protocols address systemic collagen remodeling: joints, hair, internal tissue repair. Many practitioners combine both routes for comprehensive coverage.

Related resources: GHK-Cu Profile | GHK-Cu Dosage Guide

What it does: Epitalon targets biological aging at the chromosomal level. Each time your cells divide, their telomeres (protective caps on chromosomes) get shorter. When they get too short, the cell stops functioning. Epitalon activates the enzyme that rebuilds these caps. Users often report improved sleep and a sense of rejuvenation.

How it works: Epitalon is a synthetic version of epithalamin, a substance from the pineal gland studied by Russian gerontologist Vladimir Khavinson. It activates telomerase, the enzyme that maintains telomere length. Khavinson's research showed increased telomere length in human cell cultures and extended lifespan in animal models.

Dosing tiers:

Epitalon protocols are short and intense: 10 to 20 consecutive days, repeated two to three times per year. Evening administration aligns with the pineal gland's natural circadian activity. Some users report improved sleep onset and vivid dreams during Epitalon cycles, consistent with its pineal modulation.

Related resources: Epitalon Profile

What it does: MOTS-C is sometimes called the "exercise in a vial" peptide. It activates the same metabolic pathways that exercise does, promoting fat burning and improving how your mitochondria (the energy factories in your cells) function. It targets belly fat specifically while preserving muscle.

How it works: MOTS-C is a naturally occurring mitochondrial peptide discovered at USC in 2015. It activates AMPK, the same metabolic switch your body flips during exercise. No completed human clinical trials exist yet, though Phase 1 data for the analog CB4211 showed promising metabolic improvements.

Dosing tiers:

Morning dosing maximizes synergy with daytime physical activity. MOTS-C promotes fat oxidation through AMPK-mediated lipolysis and targets visceral fat specifically. Unlike GLP-1 agonists, it preserves lean muscle mass during caloric restriction.

Related resources: MOTS-C Profile | MOTS-C Dosage Guide

What it does: DSIP improves the deepest, most restorative phase of sleep (called "delta sleep" or slow-wave sleep). Unlike sleeping pills, it does not knock you out or leave you groggy the next morning. A 1984 study found a 59% increase in deep sleep duration in chronic insomnia patients.

How it works: DSIP (Delta Sleep-Inducing Peptide) is a nine-amino-acid neuropeptide that modulates your brain's sleep architecture. It enhances slow-wave sleep without causing sedation, distinguishing it from drugs like Ambien or benzodiazepines.

Dosing tiers:

Administer two to three hours before intended sleep time, not immediately at bedtime. DSIP modulates sleep-promoting pathways rather than inducing acute sedation; the delay allows these mechanisms to activate. Cycle for 2 to 4 weeks, then assess. Chronic uninterrupted use beyond 4 weeks lacks safety data.

Related resources: DSIP Profile

What it does: Semax sharpens mental focus, improves memory, and speeds up learning. It is a nasal spray: two squirts in the morning and you are done. Developed and approved in Russia for stroke recovery and cognitive decline. No injections required.

How it works: Semax increases BDNF (brain-derived neurotrophic factor), a protein that supports the growth and survival of brain cells. It also modulates serotonin and dopamine. Despite being derived from a stress hormone (ACTH), it does not raise cortisol levels.

Dosing tiers:

Nasal administration provides rapid CNS penetration via the olfactory mucosa. Morning dosing is standard; adding a second dose in the early afternoon extends cognitive benefits through the workday. Avoid evening dosing because Semax may interfere with sleep onset due to its stimulatory BDNF activity. Cycle for 2 to 4 weeks with equal time off.

Related resources: Semax Profile

What it does: Selank reduces anxiety. Its calming effect is comparable to medications like Xanax, but without drowsiness, brain fog, or addiction risk. It is a nasal spray that works within 5 to 10 minutes. Approved in Russia for generalized anxiety disorder.

How it works: Selank is a synthetic version of tuftsin, a naturally occurring immune peptide. It modulates GABA receptors (the same system benzodiazepines target) but without suppressing cognitive function or creating dependence.

Dosing tiers:

Selank works within 5 to 10 minutes of nasal administration. Effects last 3 to 4 hours. Morning dosing covers work-related anxiety; a second afternoon dose extends coverage. Unlike Semax, Selank does not interfere with sleep and can be used in the evening if needed. Cycle 2 to 4 weeks on, 2 to 4 weeks off.

Related resources: Selank Profile

What it does: Thymosin Alpha 1 strengthens your immune system by maturing T-cells (the white blood cells that detect and destroy infections and abnormal cells). It is one of the most clinically proven peptides on this list, approved in over 35 countries for hepatitis B and C treatment.

How it works: Your thymus gland (located behind your breastbone) naturally produces Thymosin Alpha 1 to train immune cells. The synthetic version (brand name Zadaxin) enhances T-cell function, dendritic cell activity, and balanced cytokine production. Decades of clinical use confirm it is one of the safest peptides available.

Dosing tiers:

The 1.5 mg every-other-day protocol mirrors the approved Zadaxin regimen. Daily dosing is reserved for acute immune challenges or practitioner-guided protocols. Thymosin Alpha 1 is one of the safest peptides in clinical use; decades of human data confirm a clean side effect profile.

Related resources: Thymosin Alpha 1 Profile

What it does: KPV shuts down inflammation. It is especially effective for gut problems (IBD, colitis, leaky gut) when taken orally, and for systemic inflammation (joints, skin, autoimmune conditions) when injected. Unlike anti-inflammatory drugs, KPV does not suppress your overall immune system.

How it works: KPV is a tiny three-amino-acid fragment of alpha-MSH, a natural anti-inflammatory hormone. It retains the full anti-inflammatory power of the parent hormone without causing skin tanning. Unlike Melanotan II, KPV does not activate melanocortin receptors.

Dosing tiers:

Oral administration (500 mcg to 1.5 mg/day) targets gut-specific inflammation: IBD, colitis, and intestinal barrier dysfunction. Subcutaneous injection addresses systemic inflammation: joints, skin, and autoimmune conditions. Morning dosing is standard. Preclinical studies demonstrate potent NF-kB inhibition and IL-10 elevation at microgram-level doses.

Related resources: KPV Dosage Guide

What it does: PT-141 increases sexual desire. Unlike Viagra (which only affects blood flow), PT-141 works in the brain to increase actual arousal and desire. It is FDA-approved for women (brand name Vyleesi) and widely used off-label by men, especially when Viagra or Cialis stop working. You take it only when needed, 45 to 60 minutes before.

How it works: PT-141 activates melanocortin-4 receptors in the hypothalamus, the part of your brain that controls sexual desire. This is a fundamentally different approach than PDE5 inhibitors (Viagra, Cialis), which only increase blood flow without affecting desire.

Dosing tiers:

The approved Vyleesi dose is 1.75 mg. Community protocols range from 0.5 mg to 2 mg. Nausea is the primary side effect and is dose-dependent; starting at 0.5 mg and titrating up minimizes this. Do not exceed 8 doses per month. PT-141 is an as-needed peptide, not a daily protocol.

Related resources: PT-141 Profile

What it does: Melanotan II produces a deep tan without UV exposure (or with minimal sun). It also increases libido and reduces appetite as secondary effects. The first injection almost always causes nausea, which goes away after a few doses. Not FDA-approved. Requires careful mole monitoring.

How it works: Melanotan II activates melanocortin receptors that stimulate melanin production in your skin (the pigment that causes tanning). Because it hits multiple melanocortin receptor types, it also affects appetite and sexual desire.

Dosing tiers:

Start at 250 mcg on the first injection to assess tolerance. Nausea is almost universal on the first dose. Increase to 500 mcg on the second or third injection if tolerated. The loading phase builds melanin; maintenance preserves it with less frequent dosing. Monitor moles carefully during Melanotan II use. Any mole changes require immediate dermatological evaluation.

Related resources: Melanotan II Profile

What it does: Kisspeptin triggers your body to produce more reproductive hormones (testosterone in men, estrogen in women). It is used in clinical research to study fertility and sexual function. This is not a self-administration peptide. It requires weight-based dosing and IV or SubQ administration under clinical supervision.

How it works: Kisspeptin signals your brain to release GnRH (gonadotropin-releasing hormone), which triggers a cascade: your pituitary releases LH and FSH, which stimulate your reproductive organs. Published human studies (Dhillo et al., JCEM, 2005) used IV bolus doses and observed rapid hormonal responses.

Research dosing (clinical settings only):

Self-administration of kisspeptin outside clinical supervision is not recommended due to the need for precise weight-based dosing and IV/SubQ technique.

Related resources: Kisspeptin Profile

This is the most popular peptide stack in existence. BPC-157 promotes localized healing through angiogenesis and nitric oxide modulation. TB-500 drives systemic repair through cell migration and blood vessel formation. Together, they address both local tissue damage and systemic inflammation.

Protocol:

Inject BPC-157 subcutaneously near the injury site. Inject TB-500 subcutaneously in the abdomen. They can be injected at the same time but should not be mixed in the same syringe unless stability data confirms compatibility.

The GHRH + GHRP combination amplifies growth hormone release beyond what either peptide achieves individually. CJC-1295 stimulates GH synthesis; Ipamorelin triggers GH release. The pairing mimics the body's natural two-signal GH regulation system.

Protocol:

Combine in the same injection if desired. Both peptides are stable in solution together. Administer on an empty stomach; food blunts GH release. The pre-bedtime dose is the priority.

GLP-1 agonists commonly cause nausea, constipation, and GI discomfort during dose escalation. BPC-157's gastroprotective properties may reduce these side effects while supporting GI mucosa integrity. This combination addresses a practical limitation of semaglutide therapy.

Protocol:

Oral BPC-157 capsules are preferred over injectable for this stack because the target is the gastrointestinal lining. This stack is practitioner-guided; do not combine prescription medications with research peptides without medical supervision.

Before combining any peptides, verify there are no known contraindications. The Peptide Interaction Checker cross-references peptide combinations against documented interactions and side effect overlap. The Peptide Stack Calculator generates combined protocols with dosing, timing, and cost estimates.

General stacking rules: never combine two peptides that act on the same receptor at the same time. Do not stack more than three peptides simultaneously without practitioner guidance. Introduce one new peptide per week so side effects can be attributed to a specific compound.

Heavier individuals generally require higher absolute doses to achieve the same serum concentration. This is most relevant for weight-based peptides like kisspeptin (dosed in mcg/kg) and less relevant for receptor-saturating peptides like BPC-157, where tissue concentration at the injury site matters more than total body distribution.

For weight loss peptides, the relationship is inverse: semaglutide and tirzepatide use fixed-dose titration regardless of starting weight. A 300-pound patient starts at 0.25 mg semaglutide, the same as a 180-pound patient.

Growth hormone peptides become more relevant with age because endogenous GH production declines approximately 14% per decade after age 30. A 50-year-old may respond more dramatically to CJC-1295/Ipamorelin than a 25-year-old because the baseline is lower.

Post-menopausal women and androgen-deficient men may respond differently to sexual health peptides like PT-141 and kisspeptin. Hormonal context shapes peptide response.

Recovery peptides (BPC-157, TB-500) scale with injury severity. A mild tendonitis protocol differs from a post-surgical recovery protocol even when using the same peptide.

First-time peptide users should always start at the beginner tier regardless of body size or fitness level. Two weeks at the lowest effective dose reveals individual sensitivity. Experienced users with documented tolerance may start at the standard tier.

Subcutaneous injection deposits the peptide into the fat layer beneath the skin. Intramuscular injection places it directly in muscle tissue. Nasal sprays bypass the GI tract and enter the bloodstream through the olfactory mucosa. Oral administration subjects the peptide to gastric degradation, which is why most peptides cannot be taken orally. Exceptions like BPC-157 and 5-Amino-1MQ have specific formulations designed for oral stability.

Injection site rotation prevents lipodystrophy (fat tissue changes at overused sites). Rotate between abdomen, thigh, and upper arm. BPC-157 is the notable exception: injecting near the injury site delivers higher local concentrations.

Every peptide protocol in this guide starts with a beginner dose. That is intentional. The first injection reveals individual sensitivity: allergic reactions, injection site reactions, blood pressure changes, and GI disturbance all surface within the first week.

Increase dose by one tier every one to two weeks. Document each change and its effects. If side effects appear at a higher dose, return to the previously tolerated dose. Not every user needs the advanced dose. Many achieve their goals at the standard tier.

Use alcohol swabs on the vial stopper and injection site before every injection. Use a new sterile syringe and needle for each injection. Never reuse needles. Never share vials.

Draw bacteriostatic water slowly and inject it along the vial wall, not directly onto the lyophilized powder. Swirl gently; do not shake. Vigorous agitation denatures peptide bonds and reduces potency. For a complete visual walkthrough, see Peptide Injections: Complete Guide.

Unreconstituted (lyophilized) peptides are stable at room temperature for shipping but should be refrigerated (2-8 C / 36-46 F) upon arrival. Reconstituted peptides must be refrigerated immediately and used within 28 to 30 days. Some peptides (IGF-1 LR3, MOTS-C) degrade faster and should be used within 14 to 21 days after reconstitution.

Never freeze reconstituted peptides. Freezing ruptures the solution's molecular structure and reduces bioavailability. Keep vials upright and away from light. Bacteriostatic water's preservative (benzyl alcohol at 0.9%) prevents microbial growth but does not halt peptide degradation indefinitely.

Semaglutide, tirzepatide, PT-141, and thymosin alpha 1 have regulatory approval in at least one country for at least one indication. All other peptides in this chart are sold as research chemicals. They are not approved by the FDA for human therapeutic use.

This article provides educational information based on published research. It does not constitute medical advice. Consult a licensed healthcare provider before using any peptide. Self-administration of research peptides carries inherent risks including contamination, incorrect dosing, and unknown long-term effects.