Synthesis Peptides is a Las Vegas-based online seller of freeze-dried (lyophilized) peptide vials, plus tablets, creams and hair products, all labeled “for research use only.” The seller markets them to laboratories for studying recovery, growth-hormone, metabolic and skin-related questions, not as treatments. As of October 2, 2026, the seller lists single vials at $36.99 for GHK-Cu, $79.99 for Tesamorelin, $99.99 for a BPC-157 + TB-500 blend and $89.99 for SYN-3RT, with volume discounts of 5% to 20%. All sales are final: the seller does not accept returns or exchanges, and only wrong or damaged orders reported within 72 hours can get a replacement, store credit or, rarely, a partial refund. The testing and purity claims come from the seller itself, and the seller says its products are not for human use and have not been evaluated by the FDA. This page covers the price, refund terms, what is in the vials, how to check whether a peptide vendor is legit, and what health sources say about foot nerve pain.
Affiliate disclosure: Links on this page may generate a commission if you buy through them.
| What it is | Lyophilized research peptide vials (also tablets, creams, hair products), labeled for research use only and not for human consumption |
| Who sells it | Synthesis Peptides, a veteran-owned seller that lists a Las Vegas, Nevada address on its contact and about pages |
| Price as shown | From $36.99 (GHK-Cu) to $99.99 (BPC-157 + TB-500) per vial; SYN-3RT $89.99 and up; prices as of October 2, 2026 |
| Guarantee or returns | All sales final; no returns or exchanges. Wrong or damaged items: contact within 72 hours of delivery. Cancel within 1 hour of ordering. |
| How to contact the seller | Email support@synthesispeptides.io, the site's contact form, or WhatsApp chat; the seller says it replies within 1 business day |
| Product Page | Where to Buy |
What is Synthesis Peptides and who is it for?
The seller describes itself as a veteran-owned, U.S.-based supplier of “certified research peptides,” founded by a disabled combat veteran. It says it is a licensed distributor, ships from Las Vegas and carries more than 40 research compounds. The catalog is grouped by research area: recovery, GLP, anti-aging, cognitive and stress, growth, metabolic, skin tone and sexual health, plus reconstitution solutions.
The audience is laboratories, not consumers. You must confirm you are 21 or older to enter the site. The seller's legal notice says buyers certify they are a qualified professional or connected to a laboratory or research institution. Its terms say the products are “for in vitro research only” and not for personal use of any kind. If you came here because you are looking for something to take for pain or another health problem, the seller itself says these products are not meant for that.
What does the seller say the peptides do?
Seller pages describe each compound by research area rather than by health benefit:
- SYN-3RT is described as a triple agonist (GLP-1, GIP and glucagon pathways) studied for appetite, fat burn and glucose control.
- Tesamorelin is described as a growth-hormone-releasing-hormone analogue studied for growth hormone and IGF-1 release and lipid metabolism.
- GHK-Cu is described as a copper-binding tripeptide studied in collagen and dermal-repair work, hair-follicle biology and antioxidant models.
- BPC-157 + TB-500 is sold as a co-lyophilized recovery blend, marketed as “the shortcut to full-spectrum recovery research.”
The seller links published studies on each compound, such as tesamorelin trials in people with HIV and BPC-157 studies in rats. It adds that these papers do not test its own lots or show outcomes for its products, and that direct clinical evidence for TB-500 is limited. Studies in animals and cells are early-stage findings; the library page on understanding emerging research explains what that kind of result can and cannot tell you.
What is in the vials?
Each product is a freeze-dried powder in a glass vial. The seller says storage is in a refrigerator at 2 to 8 degrees Celsius, away from heat, light and moisture. Reconstitution solution is a separate purchase, not bundled with any vial.
| Product | Label size shown | Purity the seller lists | Certificates linked |
|---|---|---|---|
| SYN-3RT | 5 mg on the label image; 10 mg on the product listing | 99.96% (specification: at least 98% by HPLC) | 13 |
| Tesamorelin | 10 mg | 99.87% | 3 |
| GHK-Cu | 50 mg | 99.945% | 4 |
| BPC-157 + TB-500 | 10 mg | 99.89% | 6 |
The seller says every batch is third-party tested and comes with a Certificate of Analysis (COA). It describes a COA as listing purity from vials pulled from the lot, measured content against the labeled milligrams, identity confirmation, endotoxin, a microbial screen and heavy metals. It tells buyers to match the lot number on the vial to the lot number on the certificate, and to treat older example results as not current. Two details are worth confirming with support. The SYN-3RT label image says 5 mg while the listing says 10 mg. And the terms page says COAs are “available upon request” and that purity is “not guaranteed beyond the listed shelf life,” while the product pages say certificates are linked.
How much does it cost, and what is the total commitment?
The product pages list a single-vial price and automatic volume discounts that cannot be combined with other promo codes. Check the checkout for today's prices.
| Product | 1 vial | 3 vials (save 5%) | 5 vials (save 15%) | 10 vials (save 20%) |
|---|---|---|---|---|
| SYN-3RT (10 mg listing) | $89.99 | $256.47 | $382.46 | $719.92 |
| Tesamorelin | $79.99 | $227.97 | $339.96 | $639.92 |
| GHK-Cu | $36.99 | $105.42 | $157.21 | $295.92 |
| BPC-157 + TB-500 | $99.99 | $284.97 | $424.96 | $799.92 |
- Shipping: Free on orders over $250. The cost below that is not shown on the pages. Orders ship by USPS or UPS priority service with tracking, usually arriving 1 to 3 business days after dispatch, within the United States only. Package protection against loss or damage is an optional add-on at checkout.
- Dispatch: The seller says orders placed before 12pm PST ship the same day. Its homepage and product pages quote other cutoffs (2pm, and 2pm ET), so the sources differ on detail.
- VIP membership: The site promotes a membership “from $19.99/mo” with 5x points, free 2-day shipping and early access. Ask support how it is billed and how to cancel before joining.
- Discounts: The seller says military and first responders get 20% off. Reward points have no cash value, and coupons cannot be used on sale items unless stated.
- Payment: The site shows American Express and Google Pay, and the privacy policy says payments go through third-party processors.
What are the refund, return and cancellation terms?
The seller's shipping and returns page is blunt: because of the “sensitive nature” of the products, all sales are final, with no returns or exchanges and no refunds for change of mind. The homepage also advertises a “satisfaction guarantee,” which is hard to square with that policy, so read the returns page as the one that governs.
What you can get if something goes wrong:
- Contact support@synthesispeptides.io within 72 hours of delivery. The homepage FAQ says 48 hours, so act within the shorter window.
- Email your order number and attach a clear video of the item in question.
- Open a lost or damaged package claim with USPS or UPS. The seller says package protection, if you added it, covers this.
- The seller then offers, at its discretion, a replacement shipment, a partial refund (“in rare, approved cases”) or store credit.
Cancellations are possible only within 1 hour of placing the order, by email. Once an order ships it cannot be canceled. If a package comes back because of a wrong address or failed delivery, the seller may reship free or offer a partial refund minus shipping and handling. It also reserves the right to cancel or refuse any order.
What about side effects, safety and who should avoid it?
The seller gives no dosing, side-effect or safety guidance for people, because it says the products are not for human or animal use, diagnostic use or therapeutic use. Its terms say the products have not been evaluated by the FDA or any other regulatory body, and its legal notice says it assumes no responsibility for misuse and makes no warranties about fitness for any purpose. In practice that means a vial from this seller comes with no instructions for human use and no recourse if something goes wrong.
That is why questions such as whether peptides are hard on the liver, what the downsides are, or who should not take peptide injections cannot be answered from this seller's pages. Those are questions for a licensed clinician who knows your health history and any medicines you take. For background on how to read adverse-event information when you do find it, see the library page on clinical study safety data. Our page on BPC-157 and nerve pain goes deeper on that one peptide.
Is Synthesis Peptides a scam or legit?
Nobody can answer that for you from the outside, but you can check the things that matter: whether you get what you order, whether you can reach someone, and what happens if you do not.
What the seller's pages show
- A named business with a support email, contact form, WhatsApp chat and a Las Vegas, Nevada address listed on its contact and about pages.
- A stated response time of 1 business day and a tracked shipping method.
- Published terms, privacy policy, legal notice and returns policy.
- Lot-specific certificates linked on product pages, with a listed purity for each.
What to check yourself
- The certificate: The homepage says tests come from an “HPLC licensed testing facility” without naming it. The seller itself says to check the independent lab's details, accession number and any verification link on the certificate for your lot. Ask support for these before you order.
- The “licensed distributor” claim: The pages do not say which license. Ask what it is.
- The email domain: The site runs at synthesispeptides.co, but the support email ends in synthesispeptides.io. Confirm through the site's contact form that the address is the right one before sending order details.
- Reviews on Reddit, BBB and Consumer Reports: Look up the business name and Las Vegas location on the BBB site and see whether complaints were answered. Reddit posts are anonymous, so look for detailed, repeated accounts of the same issue rather than single raves or rants. This page earns a commission if you buy, so cross-check it with those sources.
- Your payment route: Since refunds are rare, ask your card issuer how disputes work before paying. The seller's terms mention chargebacks, and say reward points from a charged-back order are voided.
Which peptide company is the most legit?
No page here can rank vendors, and be wary of any site that claims to. A fair test for any vendor, using the seller's own description of a good certificate: a named lab, a lot number matching your vial, measured content in milligrams (not just a purity percentage), plus endotoxin, microbial and metals results. Add clear contact details and refund terms you can accept.
How does it compare with other ways of dealing with nerve pain?
Many readers searching this seller are really looking for relief from nerve pain. Here is how the options compare, according to the health sources on this page.
| Option | What the sources say |
|---|---|
| Treating the cause | The NHS says treatment may target the underlying cause, such as controlling diabetes or treating B12 deficiency. |
| Prescription nerve-pain medicines | The NHS lists amitriptyline, duloxetine, pregabalin and gabapentin. Side effects can include tiredness and dizziness. |
| Capsaicin cream or patch | The NHS says it may help in neuropathic pain, with possible skin irritation, and notes supply problems with the cream. |
| Movement and foot care | Hinge Health, which sells a physical-therapy program, says gentle regular movement can ease discomfort and improve balance. The CLS Health clinic lists supportive shoes and low-impact exercise. |
| Supplements and complementary therapies | The NHS says evidence for acupuncture, herbal medicine, benfotiamine and alpha-lipoic acid is not always clear, and advises talking to a doctor first. |
| Research peptides from this seller | Sold for laboratory use only; the seller does not market them for nerve pain or any human use. |
| Doing nothing | Austin Foot and Ankle Specialists, a podiatry practice, says nerve pain will not go away on its own and can worsen. Cleveland Clinic says neuropathy can be temporary or permanent. |
For more general approaches, see our pages on managing chronic pain and foot health and chronic pain.
What triggers foot nerve pain, and can it be reversed?
Cleveland Clinic says diabetes is the most common cause overall and often affects the feet first. Other causes it lists include alcohol use disorder, vitamin and nutrient deficiencies (copper and vitamins B1, B6, B9, B12 and E), toxins, certain medications such as chemotherapy, autoimmune conditions, infections, kidney or liver disease, compressed nerves and injuries. Austin Foot and Ankle adds smoking and poorly fitted footwear.
On reversal, Cleveland Clinic says it is possible to stop or may help address certain types if they are diagnosed and treated quickly, and that the more severe and longer-lasting the damage, the less likely it is to reverse. The CLS Health clinic says some forms improve when the cause is treated, while long-standing diabetic or chemotherapy-related neuropathy may not fully go away. Cleveland Clinic advises seeing a provider at the first signs.
What works immediately for nerve pain, and which vitamins help?
The NHS says neuropathic pain does not usually respond to common painkillers such as paracetamol and ibuprofen, and that prescription medicines are started at a low dose and raised gradually until an effect is noticed. It does not describe any instant fix.
On vitamins, the Foundation for Peripheral Neuropathy says B12, B1, B6 and vitamin E deficiencies can cause neuropathy, and lists alpha-lipoic acid, acetyl-L-carnitine and vitamin D as studied, mostly in diabetic neuropathy. It also warns that too much vitamin B6 can cause neuropathy and that supplements should not be started without a physician's supervision. The NHS says B12 deficiency is treated with injections or tablets. CLS Health cautions against high-dose supplements without medical guidance, especially with medications or kidney disease.
Who is this product for, and who should check with a professional first?
The seller says its products are for qualified researchers aged 21 and over, and not for humans or animals. On the health side, the NHS advises speaking to a doctor before trying supplements or complementary therapies in case they interfere with ongoing treatment. Cleveland Clinic says to see a provider at the first signs of neuropathy, and Austin Foot and Ankle suggests seeing a podiatrist about foot nerve pain.
What should you check before ordering?
- Ask support which lab tested your lot, and for its accession number or verification link.
- Ask which license makes it a “licensed distributor.”
- Confirm the SYN-3RT vial size (5 mg label versus 10 mg listing).
- Ask whether COAs are posted for every lot or only on request.
- Ask what shipping costs on orders under $250, and how VIP membership bills and cancels.
- Check the BBB listing and independent reviews, and ask your card issuer about dispute rules.
- Remember that all sales are final and the 72-hour window for wrong or damaged items is short.
If you decide to look at the catalog, the seller's Product Page lists current prices and certificates.
Quick answers to other questions
- Is Synthesis Peptides reputable? It presents itself as an established research supplier with documented terms, but the testing claims are its own. See the checks above.
- Does Jennifer Aniston inject peptides, and what are celebrities taking? This page cannot confirm what any celebrity does. A famous name says nothing about safety or about the quality of a vendor's vial.
- How much do peptide injections cost? This page can only show what this seller charges per research vial (see the table). Clinic pricing is a question for a licensed provider's office, and the seller says its vials are not for human use.
- Is Vicks VapoRub good for neuropathy in feet? The NHS names capsaicin cream or patches, with their side effects, as a topical option for nerve pain. Your clinician can say whether any other topical product suits you.
- Synthesis Peptides reviews on Reddit, Consumer Reports or BBB? Check those sites directly using the business name and Las Vegas location, as described above.
By KIMAWellness.com Wellness Team
This article is for general information purposes only and does not constitute medical advice. Consult your doctor or qualified healthcare provider before making changes to your health routine.