Questions and answers

Use the search page, or open the shop and pick one of its 12 categories. Every product page lists its strengths, stock status by ship-from origin and the supplies used with that vial. To read about a compound before ordering, open its profile from the A to Z list. Read more: Peptides A to Z.

Yes, as a research peptide sold labeled for research use; BPC-157 for sale lists its strengths (5 mg) and stock by ship-from origin. It is not an approved medicine: FDA's 2026 review found no approved product containing BPC-157 in any country.¹ Read its profile for what the research does and does not show. Read more: What is BPC-157?.

Yes. Peptides and supplies go in the same cart. Six of the seven supplies list the USA as their only ship-from origin; the 3 mL syringe also ships from Canada. The shipping page explains how orders that mix origins are sent, and each peptide page lists the supplies used with that vial. Read more: Peptide supplies.

On each product page, beside every strength and ship-from origin; the figures come from the store catalog. For the GLP-1 research vials, the per-milligram math for each vial size is worked through in the tirzepatide price guide and the semaglutide cost guide. Read more: Peptides for sale.

Work out the figure per milligram: divide what a strength sells for by the milligrams it holds, then compare across sizes. Check the certificate of analysis too, because the label amount is not all peptide: Bachem, a peptide maker, notes a powder may be only 70 to 90% peptide even when HPLC purity is above 95%.² Read more: Lab results and certificates of analysis.

Bulk terms are set per account and confirmed when a wholesale application is reviewed. Repeat-order and referral programs are described on the subscribe and save and refer a friend pages, where their terms appear once confirmed. We do not quote discounts that are not published there. Read more: Wholesale and bulk peptides.

Not as a published policy yet. Shipping charges, and any order value above which shipping becomes free, are not set on this site; the shipping page will list both once they are confirmed. Until then, ask us at support@d2cpeptides.com for the charge on your order before you send it, and keep the reply with your order records. Read more: Shipping.

Each peptide page lists the same five supplies: bacteriostatic water, a 3 mL Luer-Lok syringe, an 18G needle, insulin syringes and alcohol swabs. Bacteriostatic water's label limits it to diluting or dissolving drugs for injection.³ The supplies guide explains what each one is for. Read more: Peptide supplies.

No. Bacteriostatic Water for Injection contains 0.9% or 1.1% benzyl alcohol as a preservative and comes in a multiple-dose vial; Sterile Water for Injection has no preservative and comes only in single-dose containers.³⁴ The bacteriostatic water label says it must not be used in newborns, because benzyl alcohol has been linked to toxicity in them.³ Read more: Bacteriostatic Water.

Markings and needles. The 3 mL Luer-Lok syringe has a barrel marked in milliliters and a threaded tip that a separate needle screws onto.⁵⁶ An insulin syringe has its own needle and is marked in units: on a U-100 syringe each unit is 0.01 mL.⁷⁸ For needles, the higher the gauge number, the thinner the needle.⁸ Read more: Peptide supplies explained.

FDA advises putting needles and other sharps into a sharps disposal container right after use, then following local rules when it is about three-quarters full: drop-off sites, household hazardous waste sites, mail-back programs or pick-up.⁹ If no FDA-cleared container is available, a heavy-duty plastic household container, such as a laundry detergent bottle, can serve instead.¹⁰ Never put loose needles in the trash or recycling.¹⁰ Read more: How subcutaneous injections are given.

Into 12 categories, from weight loss to cognitive peptides, plus a supplies section. A product can sit in more than one: HGH and the KLOW blend each appear in six. Category names describe the research area, not a use; every product carries the label: For research use only. Not for human or veterinary use. Read more: Peptides for sale.

The weight loss peptides category, which also lists seven other products such as HGH, tesamorelin and MOTS-c. The semaglutide, tirzepatide and retatrutide vials are research materials, not FDA-approved medicines. FDA has warned sellers of research-labeled semaglutide, tirzepatide and retatrutide sold for human use, and says such products are of unknown quality.¹¹ Read more: Weight Loss Peptides.

Four vials hold more than one peptide: the Wolverine Stack (BPC-157 and TB-500, 5 mg each), CJC-1295 + Ipamorelin (5 mg each), the Glow stack (GHK-Cu, BPC-157 and TB-500, 60 mg in all) and the KLOW blend (BPC-157, TB-500, KPV and GHK-Cu, 70 mg in all). The blends page sets out what research covers each combination. Read more: Peptide blends and stacks.

Yes. Research labs, institutes and resellers can apply for a wholesale account. Terms, minimums and lead times depend on the products and quantities, so they are confirmed when the application is reviewed rather than published. Each product page shows retail figures and stock by ship-from origin, so you can plan an order before you apply. Read more: Wholesale and bulk peptides.

Labs, research institutes and resellers. Every product is sold labeled for research use, not for use in people or animals, and the research use policy sets out who may order and what we do not provide. If your lab needs a single lot or particular strengths, say so in the application. Read more: Research use policy.

You can ask. Certificates are listed on the lab results page by product and lot only when they are published. Before a large order, write to support@d2cpeptides.com with the products and strengths, and ask what documentation exists for the lots that would ship. When the order arrives, check the lot shown on each vial or its packaging against that documentation. Read more: Lab results and certificates of analysis.

On the lab results page, listed by product and lot when they are published; if your lot is not listed, write to support@d2cpeptides.com with the product, strength and lot number. Check which tests a certificate reports: in its 2026 review, FDA found most certificates for BPC-157 reported purity only, and it treats endotoxin testing as a critical quality check for injectable products.¹ Read more: Lab results and certificates of analysis.

At least identity and purity. EMA's guideline for synthetic peptides lists identification, purity (total and individual impurities), water content, residual solvents, elemental impurities, bacterial endotoxins and microbiological purity among the tests in a peptide's specification.¹² Mass spectrometry can confirm identity by molecular mass and sequence.¹² Read more: What are research peptides?.

Not always. In a 2024 study of 3 semaglutide vials from illegal online pharmacies, drug content ran 28.56% to 38.69% above the label.¹³ Health Canada warns that unauthorized peptide products may hold too much, too little or none of the active ingredient, unlisted ingredients, and contaminants such as solvents, heavy metals and particles of fiber, glass or plastic.¹⁴ Read more: Peptide safety basics.

It marks a material for laboratory research, not for use in people. Every product here carries this label: For research use only. Not for human or veterinary use. The label does not make a product legal to use on people: an August 2026 FDA warning letter found a seller's research-labeled peptides were drugs intended for human use, and Health Canada says such labels do not make products legal.¹⁵¹⁴ Read more: What are research peptides?.

From the USA and Canada. Each product page shows the ship-from origins for every strength and whether each is in stock; some products list only one origin. A parcel sent from outside the United States is imported, so it passes through US customs, which can delay or hold it. Read more: Shipping.

To addresses across the United States. Local pages cover 34 places in Maricopa County, Clark County and Riverside County, such as Phoenix, Las Vegas and Temecula. Each local page covers shipping to that place and keeping vials cool in its climate. Orders are shipped; no pickup or walk-in location is listed on this site. Read more: Locations.

Processing times, carriers and delivery estimates are not published yet, and the shipping page will list them once they are set. If a study depends on a delivery date, ask us at support@d2cpeptides.com before you order, and pick a US origin when the product page shows one in stock. Read more: Shipping.

Check each vial, then store it as its product page says. Bachem, a peptide maker, ships freeze-dried peptides at room temperature with the long-term storage condition on the label, and says a refrigerator at 4 °C suits short-term use, with a freezer for longer storage.¹⁶ Approved products differ, so the label for each one governs.¹⁷¹⁸ Read more: How to store peptides.

A lab-made peptide of 15 amino acids, described as part of a protein found in human gastric juice.¹⁹ Evidence comes mostly from animal studies: a 2026 systematic review found only three human studies, with 30 people in all and no control groups.²⁰ No country has approved a medicine containing it.¹ Read more: What is BPC-157?.

Yes. It is a 39-amino-acid peptide joined to a fatty-acid chain, and it activates two gut-hormone receptors, GIP and GLP-1.²¹²² It is the active ingredient in Mounjaro, approved for type 2 diabetes, and Zepbound, approved for long-term weight reduction and for sleep apnea in adults with obesity.²³²⁴ Read more: What is Tirzepatide?.

An investigational peptide that activates three hormone receptors: GIP, GLP-1 and glucagon.²⁵ FDA says it is not a component of any FDA-approved drug, has not been found safe and effective for any condition, and cannot be used in compounding under federal law.¹¹ Read more: What is Retatrutide?.

No. NAD+ (nicotinamide adenine dinucleotide) is a coenzyme made of two nucleotides, found widely in nature.²⁶ It carries electrons in energy metabolism and is needed by enzymes such as sirtuins and PARPs.²⁷ The body makes it from tryptophan and recycles it from nicotinamide.²⁷ Read more: What is NAD+?.

No. TB-500 is a synthetic 7-amino-acid piece of thymosin beta-4, amino acids 17 to 23.²⁸ Thymosin alpha-1 (thymalfasin) is a different peptide of 28 amino acids, first isolated from calf thymus in 1977.²⁹ It is approved in some countries, including Italy, but not in the United States.²⁹³⁰ Read more: What is Thymosin Alpha-1?.

The evidence differs by compound and is mostly from animals. A 2025 systematic review of BPC-157 in orthopaedic sports medicine found 36 studies, of which 35 were preclinical and 1 was clinical.³¹ Animal results do not show what happens in people, so each compound's profile reports its evidence level. Read more: Peptides and healing and recovery.

This has not been shown. Human studies of CJC-1295, ipamorelin, GHRP-2 and GHRP-6 measured growth hormone and IGF-1 levels, appetite, diagnosis or gut recovery, not muscle growth.³² Even growth hormone itself raised lean mass by 2.1 kg in a review of healthy young adults without improving strength or exercise capacity.³³ Read more: Peptides and muscle growth.

FDA-approved options include GLP-1 drugs: Wegovy (semaglutide) and Zepbound (tirzepatide) are approved, with diet and physical activity, for long-term weight reduction in adults with obesity, or overweight with a weight-related condition, and Foundayo (orforglipron) is a daily tablet approved for the same use in April 2026.^34243536 All are prescription only, and the prescriber sets the dose. Read more: Peptides and weight loss.

Stomach and gut effects are the most common: on the Ozempic label, nausea, vomiting, diarrhea, abdominal pain and constipation each affected 5% or more of patients.³⁷ The label also warns of pancreatitis, gallbladder disease, low blood sugar when combined with insulin or a sulfonylurea, and thyroid C-cell tumors seen in rodents.³⁷ Read more: GLP-1 side effects.

FDA's review found no increased risk. A meta-analysis of 91 placebo-controlled trials with 107,910 patients showed no rise in suicidal thoughts or behavior, and in January 2026 FDA asked makers to remove that warning from the Saxenda, Wegovy and Zepbound labels.³⁸ FDA still advises anyone with new or worsening depression to tell a health care professional.³⁸ Read more: GLP-1 side effects.

Its safety in people is not established. FDA says compounded BPC-157 may trigger immune reactions and have impurity and characterization problems, and that it lacks enough information to know whether the drug would harm people.³⁹ The US Anti-Doping Agency notes it is unknown whether any dose is safe.⁴⁰ Read more: What is BPC-157?.

Unknown in people. In its 2026 review, FDA found no published study in which TB-500 was given to people, and no human exposure data for TB-500 products.²⁸³⁹ FDA also notes it is not a component of any FDA-approved drug.²⁸ WADA bans it at all times as a thymosin beta-4 derivative.⁴¹ Read more: TB-500 side effects.

FDA says to wash the area right away with soap and water, or use a skin antiseptic such as rubbing alcohol or hand sanitizer, and to get medical attention right away by calling a doctor or a local hospital. The same steps apply if blood or other body fluids reach the eyes, nose, mouth or skin.¹⁰ Read more: Peptide safety basics.

No. Our pages report label schedules for approved medicines, which a prescriber sets for each patient, and the doses used in published studies for other compounds, with species and route. Research-grade vials are unapproved and have no label dose.¹¹ For many research compounds no human dose is established; FDA found too little clinical safety information to characterize BPC-157's safety profile.¹ Read more: Peptide dosage basics.

Both tirzepatide labels start at 2.5 mg once weekly. If more blood sugar control is needed, Mounjaro rises in 2.5 mg steps after at least 4 weeks on each dose, to a maximum of 15 mg weekly for adults.²³ Zepbound treats 2.5 mg as a starting dose only, moves to 5 mg after 4 weeks, and lists maintenance doses of 5, 10 or 15 mg for weight reduction.²⁴ The prescriber sets the dose. Read more: Tirzepatide dosage.

To reduce stomach and gut side effects, the labels state.³⁷²³²⁴ Wegovy injection steps from 0.25 mg to 0.5, 1 and 1.7 mg, four weeks at each; for adult weight reduction, maintenance is 2.4 mg (recommended) or 1.7 mg, and some adults may go up to 7.2 mg.³⁴ Foundayo, a daily tablet, starts at 0.8 mg and rises to 2.5 mg, then 5.5 mg, with at least 30 days at each step.³⁵ The prescriber sets each step. Read more: GLP-1 dosage.

Divide the amount in the vial by the volume of diluent added. A 10 mg vial mixed with 2 mL holds 5 mg/mL, so each 0.1 mL holds 0.5 mg, and 0.1 mL is 10 units on a U-100 syringe. The reconstitution calculator and units converter do the same math and show the formula. Read more: Peptide calculator.

There is no single volume. The volume chosen sets the concentration, so less liquid gives a stronger solution and more gives a weaker one, and the calculator shows the result for any volume. Approved products fix their own: EGRIFTA WR is mixed with 1.3 mL of bacteriostatic water to give 8 mg per mL.⁴² Read more: How to reconstitute a peptide vial.

It depends on the product. Peptide makers advise against storing peptides in solution, because they slowly break down.¹⁶ Approved products set their own limits: EGRIFTA SV is used at once, EGRIFTA WR keeps 7 days at room temperature, ZOMACTON 14 or 28 days refrigerated depending on the vial, and one hCG product 60 days refrigerated.^17421843 Read more: How to store peptides.

No. A unit mark is a volume: on a U-100 syringe, 1 unit is 0.01 mL, and how many milligrams that holds depends on the concentration.⁷ FDA has reports of people told to draw 5 units (0.05 mL) who drew 50 units (0.5 mL), ten times the intended amount.⁴⁴ Read more: Peptide dosage basics.

Ozempic is one FDA-approved brand of semaglutide for adults with type 2 diabetes: a weekly injection, also approved to lower heart and kidney risks in some of them, and now a daily tablet too.³⁷⁴⁵ Wegovy is semaglutide approved for long-term weight reduction, and Rybelsus is a daily semaglutide tablet for type 2 diabetes.³⁴⁴⁵ Read more: Ozempic vs Semaglutide.

Both contain tirzepatide and are made by Eli Lilly, but they are approved for different uses. Mounjaro is for type 2 diabetes: blood sugar control in adults and children 10 and older and, since August 2026, cutting the risk of major cardiovascular events in high-risk adults.²³ Zepbound is for long-term weight reduction in adults with obesity, or overweight with a weight-related condition, and for moderate to severe obstructive sleep apnea in adults with obesity.²⁴ Read more: What is Zepbound?.

For weight loss, a head-to-head trial favored tirzepatide. In SURMOUNT-5, a 72-week open-label trial in 751 adults with obesity but without diabetes, people on tirzepatide (10 or 15 mg weekly) lost 20.2% of body weight on average, against 13.7% on semaglutide (1.7 or 2.4 mg weekly).⁴⁶ Waist size fell 18.4 cm versus 13.0 cm.⁴⁶ Read more: Ozempic vs Tirzepatide.

They are unrelated peptides. BPC-157 has 15 amino acids and is described as part of a gastric juice protein; TB-500 is a 7-amino-acid piece of thymosin beta-4.¹⁹²⁸ WADA bans both at all times, BPC-157 in class S0 and TB-500 in class S2.⁴¹ FDA's advisory committee reviewed both in July 2026.⁴⁷ Read more: What is Wolverine Stack (BPC-157 + TB-500)?.

No. Sermorelin is a 29-amino-acid analog of GHRH that prompts the pituitary to release the body's own growth hormone; HGH (somatropin) is the 191-amino-acid hormone itself.⁴⁸⁴⁹ In children with growth hormone deficiency, sermorelin given by infusion or in 3 daily doses raised growth rate less than once-daily somatropin at the same microgram dose.⁴⁸ Somatropin products are FDA approved, while sermorelin, sold as GEREF, was discontinued in 2008.⁴⁹⁵⁰ Read more: What is Sermorelin?.

Write to support@d2cpeptides.com or use the contact page. Include your order number and the name on the order; for a lab document question, add the product, strength and lot number from the vial or its packaging. We answer questions about orders, products, lab documents and wholesale accounts. Read more: Contact us.

No. Every product is a research material labeled for research use, so we do not answer questions about using one on a person or an animal, and we give no doses or protocols. Questions about your own health belong with a licensed clinician; the medical disclaimer explains why. Read more: Research use policy.

Tell us as soon as you find the problem, with your order number, what is wrong, and photos of the box, the packing and each affected vial with its label and lot number readable. Keep everything until the claim is closed, and leave a vial you think is wrong unopened. Read more: Returns and refunds.

Use the contact page and name the page address, the sentence you think is wrong and, if you have one, the source that shows it. A correction to a health statement needs a source of the kind this site cites: drug labels, regulators such as FDA, NIH databases or peer-reviewed journals. Our review policy explains how sources are chosen and how corrections are handled. Read more: How we source and review our content.