Peptide Works
Research-Grade Peptides
Peptide Works
Research-Grade Peptides
Every compound Peptide Works supplies, organised by format and by research area — independently tested, documented by batch, and supplied for laboratory research purposes only.
The catalogue currently runs to eighty-seven listings. Rather than present them as one long alphabetical wall, this page groups them the way researchers actually shop — first by the format the material arrives in, then, within the vial range, by the field of research the compound belongs to.
There is a practical reason for that. A researcher who already knows they need Ipamorelin will find it quickly under any system. A researcher who has just been handed a growth hormone project and needs to see what is available across the whole axis is far better served by a page that puts CJC-1295, Sermorelin, GHRP-2, GHRP-6, Hexarelin, Tesamorelin and the IGF and MGF variants in front of them together. The second researcher is the one most catalogue pages fail.
Prices, current stock position and pack sizes are not listed on this page. That is deliberate. Those three things change, sometimes weekly, and a static page that carries them is a page that misleads someone the moment it goes out of date. What you will find here is an accurate, complete inventory of what Peptide Works supplies, with the live catalogue at the Peptide Works store carrying the current commercial detail for each listing.
Understanding the format distinction matters more than it might first appear, because format determines handling, storage and how much preparation work falls to the laboratory rather than to the supplier.
Fifty-five single-compound listings supplied as lyophilised powder in sealed vials. The largest part of the catalogue and the format most research protocols are written around, because reconstitution is left to the laboratory and concentration is therefore under the researcher's control.
Four listings in which two compounds are combined in a single vial before lyophilisation. Useful where a pairing is used consistently enough that preparing two vials separately is wasted bench time.
Fifteen listings that group two or three separate compounds together as a set. Unlike a blend, the compounds remain in their own vials — the stack is a purchasing and pairing convenience, not a pre-mixed product.
Nine listings supplied in capsule form, supporting research that specifically requires an oral presentation rather than a reconstituted solution.
Two GHK-family topical preparations for dermal and cosmetic-science research, supplied ready to apply in a topical research model.
Bacteriostatic water for reconstitution work, and a standalone NAD+ vial. Small in number, but the reconstitution supply is the one item most likely to be forgotten and most likely to stall a bench session.
Lyophilised single-compound vials make up the core of the catalogue. The groupings below follow research field rather than alphabetical order, and a compound is listed under the area most enquiries about it come from — several of these molecules are relevant to more than one field.
One point of housekeeping before the lists. The research areas named here describe the context in which each compound appears in the scientific literature. They are not claims about what any compound does, and nothing on this page should be read as a statement of effect, benefit or outcome. Peptide Works supplies research materials and publishes background reading; it does not answer questions about use or application, and it does not provide protocols.
This is the largest single group in the vial range and the one researchers ask about most often. It covers growth hormone releasing hormone analogues, the ghrelin-receptor secretagogues, and the downstream growth factors that sit further along the same axis. Because these compounds act at different points in one signalling pathway, they are frequently studied side by side, and several of them also appear in the blend and stack ranges below for exactly that reason.
A small, focused group used in work on myostatin and the wider TGF-beta family. These are specialist research materials rather than general-purpose compounds, and they are stocked because researchers in skeletal muscle biology ask for them specifically.
The compounds researchers most often associate with wound healing, gut integrity and mucosal models. BPC-157 is the most requested single compound in the entire Peptide Works catalogue and appears here as a standalone vial as well as in capsule form, in a blend with TB500 Peptide, and across five of the peptide stacks.
Neuropeptides and small nootropic-class molecules used in work on cognition, memory consolidation, mood regulation, sleep architecture and arousal. Selank and Semax are the two most frequently ordered from this group and are also available pre-combined as a stack.
Short peptide bioregulators associated with the Khavinson research tradition, each conventionally linked in the literature to a particular tissue type — pineal, thymic, cartilage and bronchial. They are usually studied as a family rather than in isolation, which is why Peptide Works keeps the group complete rather than stocking only the best-known members.
Compounds used in metabolic, adipose and mitochondrial research, including the mitochondrial-derived peptides and the AMPK-associated molecules. Several of the more recent additions to the catalogue sit in this group, reflecting how quickly mitochondrial peptide research has expanded.
Thymic and antimicrobial peptides used in immunology and inflammation models. Note that Thymosin Beta 4 is supplied in capsule form rather than as a vial, and that KPV and VIP — both also relevant to inflammatory work — are listed under tissue repair above, because that is where most enquiries about them originate.
Senescence-focused research material. This is the smallest group in the catalogue, and deliberately so: Peptide Works stocks the compounds that laboratories genuinely request rather than padding the category out.
Copper peptides, pigmentation-related compounds and the hair and dermal research molecules. The GHK-Cu family runs across four different formats in the catalogue — vial, capsule, topical and three separate stacks — which makes it one of the most format-flexible compounds Peptide Works supplies.
Hypothalamic and pituitary-axis peptides, together with the melanocortin and oxytocin-family compounds used in reproductive and behavioural endocrinology.
Two compounds that have attracted a good deal of recent attention. Peptide Works has published background reading on both, including articles on B7-33 and cardioprotection research and on B7-33 in fibrosis models.
A blend is exactly what the name says: two compounds combined in a fixed relationship and lyophilised together in a single vial.
Blends exist because certain pairings recur. When a laboratory is running the same two-compound combination repeatedly, preparing two vials, reconstituting both and combining them by hand introduces four opportunities for variation that a pre-combined vial removes. The four blends Peptide Works supplies reflect the two pairings researchers request most consistently — the tissue-repair combination, and the growth hormone secretagogue paired with a releasing hormone analogue.
The trade-off is worth stating plainly, because it is the question the support team is asked most about this range. A blend fixes the relationship between its two compounds. If your work requires that relationship to vary, buy the two vials separately and combine at the bench. If it does not, the blend is fewer steps and one less thing to record.
Note that the CJC-1295 blends are offered in both DAC and No DAC forms. That distinction is not cosmetic — the presence or absence of the drug affinity complex is the single most important variable in that compound, and choosing the wrong one will invalidate a protocol written for the other. Both are stocked precisely so that researchers do not have to compromise on it.
A stack groups two or three compounds as a single purchase. Each compound stays in its own vial, so the laboratory keeps full control over how and whether they are combined.
This is the part of the catalogue most often misunderstood, so it is worth being direct about it. A stack is a purchasing convenience. It puts a commonly studied combination together in one order, with one set of batch documentation covering all of its components, and it means a researcher setting up a multi-compound comparison does not have to assemble that order compound by compound. It is not a pre-mixed preparation, it carries no recommended combination, and Peptide Works does not publish protocols for any of them.
What the fifteen stacks do show, read as a group, is where multi-compound research is concentrated. BPC-157 appears in five of them. GHK-Cu appears in four. Those two compounds are the connective tissue of the catalogue, turning up across formats and across research areas more than any others.
Every component of a stack is treated as its own batch for testing and documentation purposes. Buying a three-compound stack means three sets of batch-specific Certificate of Analysis data, not one composite document. That matters if a stack is being used in work that will later be written up, because each component has to be traceable independently.
Nine listings supplied in capsule form for research that requires an oral presentation rather than a reconstituted solution.
Capsules solve a specific problem. Oral-route research needs a fixed, uniform quantity in a form that survives handling and storage without reconstitution, and producing that reliably at the bench from lyophilised powder is difficult and hard to document. The capsule range exists for that class of work.
Three things are worth noticing about how this range is composed. MK-677 and Tesofensine appear only as capsules — there is no vial equivalent in the catalogue, because the research these compounds appear in is oral-route work. 5-Amino-1MQ is likewise capsule-only. And Thymosin Beta 4 is supplied in capsule form, both on its own and in combination with BPC-157, rather than as a vial.
Two of these listings carry Thymosin Beta 4 under slightly different spellings — hyphenated in the BPC-157 combination, unhyphenated in the standalone capsule. Both refer to the same compound. The inconsistency is in the live catalogue's own product titles and is reproduced here rather than silently corrected, so that a researcher cross-checking this page against an order confirmation finds the names matching.
The remaining four listings cover topical preparations for dermal research and the consumables that support reconstitution work.
Two GHK-family topicals, supplied ready for use in a topical research model. They sit alongside the GHK-Cu vial and the GHK-Cu capsule, which means the GHK family can be studied across three different presentations without changing supplier or introducing a second source of material into a comparison.
Bacteriostatic water is the item most frequently left off an order and most frequently needed. It is stocked so that a laboratory ordering lyophilised vials can order the means of reconstituting them at the same time, from the same supplier, rather than sourcing it separately. The NAD+ vial is listed here rather than in the peptide ranges because it is not a peptide; it is included in the catalogue because researchers working on the mitochondrial compounds ask for it alongside them.
Alongside the format categories, the live store maintains two rolling collections that change too often to reproduce accurately on a static page.
New Arrivals collects compounds recently added to the catalogue. It is the honest way to see where the range is growing, and in recent additions that has been weighted towards the mitochondrial and metabolic compounds. Promotions collects whatever is currently discounted. Both are maintained on the live store rather than here, for the same reason prices are: a static page cannot keep either of them truthful.
If you are trying to work out whether a compound you need has been added since you last ordered, the New Arrivals collection is the fastest answer, and it is more reliable than scanning this page for something you might not remember the absence of.
Two formats deserve a direct mention because researchers ask about them. The live catalogue at the time of writing does not include peptide nasal sprays or pre-mixed peptide pens as purchasable listings — both formats are described on the Peptide Works services page as part of the wider service range, but neither currently appears as a stocked product in the eighty-seven listings. If your work depends on either presentation, ask before you plan around it rather than after.
The commercial detail of a catalogue listing — the name, the format, the price — is the least interesting thing about it. What determines whether a compound is usable in serious work is what can be proven about the specific batch that arrives.
Peptide Works standard products are guaranteed to a minimum of 99% purity, with structurally more complex compounds held above 98%. Those figures are not internal assertions. Batches released from the facility are tested by an independent third-party laboratory, and batch-specific Certificates of Analysis can be provided so a researcher can confirm the identity and purity of the exact material on their bench rather than the general specification of the product line. Manufacturing takes place in cGMP-certified facilities.
The distinction between a product-level claim and a batch-level document is the whole point. A supplier's stated purity specification tells you what they aim for. A Certificate of Analysis tied to the batch number on your vial tells you what you received. In work where trace contamination can quietly invalidate a result, only the second one is evidence. Peptide Works also publishes third-party testing certificates on the live site.
Orders are placed through the live store. Accepted payment methods are card payment, bank transfer, Zelle — available to customers in the United States only — and Bitcoin and other cryptocurrency. International bank payments can take two to three working days to appear, and receipt of payment is not separately confirmed; the confirmation a customer receives is the dispatch email, which carries the tracking details. One discount voucher may be applied per order.
Orders are dispatched two to four working days after payment is received. Shipping is from either the United Kingdom or the United States depending on destination, with most orders leaving from the UK, and Parcel Force and DHL are among the carriers used. Standard international delivery is quoted at ten to fourteen days and premium at three to five days, with expedited options available for an additional fee. A tracking number and link are issued on dispatch. Packages are sent unlabelled. Full detail is published in the Peptide Works shipping and returns policy.
Because of the nature of the products, Peptide Works does not accept returns. Items damaged in transit are handled as replacements. A shipping protection provision applies where an order is not received within the published window after dispatch: the order is re-sent, and in the event a re-sent order also fails to arrive, it is refunded. That provision covers customs seizure. Responsibility for checking the laws and regulations of the destination country before ordering rests with the customer, and where customs correspond with a customer about an order, Peptide Works will where possible assist with the information needed to release the shipment.
The answers below are drawn from the published Peptide Works policies. Where a question touches something the policies do not cover, that is said plainly rather than filled in.
Because prices change and this page does not. Several listings are also sold in more than one pack size, which means a single figure would misrepresent them even on the day it was accurate. The current price for every listing is on the live store, alongside the current stock position.
The catalogue is what is stocked. The enquiry form on the live site carries a product enquiry option, which is the appropriate route for asking about something not listed — but nothing on this page should be read as a commitment to source compounds outside the range.
That is a question about the design of your study, and Peptide Works does not advise on it. What the company will confirm is factual: what pack sizes a listing is available in, what the tested purity of a given batch was, and what documentation accompanies it. The judgement about what your protocol requires stays with you.
There is a short window. The published guidance is to make contact within two hours of purchase, after which changes or cancellation may not be possible. Cancellation with a full refund is possible up until the point the order is released for shipping.
Report it within seven days. Transit damage is handled under the shipping and returns policy as a replacement — returns are not accepted because of the nature of the products, so a damaged item is resolved by re-supply rather than by sending material back.
No. One voucher per order, entered in the promo code field at checkout.
No. Orders are shipped unlabelled.
Checking the destination country's laws and regulations before ordering is the customer's responsibility, and Peptide Works does not accept responsibility for loss arising from non-compliance, including customs hold-ups or seizure. Where a customer receives correspondence from customs and forwards a copy, Peptide Works will where possible help supply the information needed to release the shipment. Separately, the shipping protection provision treats seizure as a non-delivery, which brings the re-send and refund sequence into play.
Certificates of Analysis can be provided on a batch-specific basis. If documentation needs to be in hand before material is used — which is often the case where a study will be written up — request it explicitly rather than assuming it will arrive with the parcel.
Bulk and wholesale enquiries are handled individually. The enquiry form on the live site carries a wholesale enquiry option, which is the published route for this; no bulk pricing schedule, minimum order quantity or volume discount tier is published anywhere on the Peptide Works site, and none is invented here.
Every listing on this page is supplied for laboratory research purposes only. That is not a disclaimer appended to the end of a shop page as a formality — it is a condition of purchase, and it is enforced.
The published Peptide Works terms require that purchasers are 21 years or over, and that they are associated with a body qualified to carry out laboratory research — including but not limited to a university, laboratory or other research-based facility. Peptide Works reserves the right to carry out due diligence in assessing customer eligibility and suitability, and to refuse a sale where those conditions are not met. Products should only be handled and used by qualified and suitably trained laboratory research professionals.
None of the compounds listed on this page is for human or animal consumption or ingestion of any kind. None is a medicine. They are not approved by the FDA, for customers in the United States, or by the MHRA, for customers in the United Kingdom, to prevent, treat, diagnose, mitigate or cure any medical condition or disease. Nothing on this page is medical advice, and nothing here should be read as a therapeutic claim.
Peptide Works does not answer questions about the use or application of its products. That is a considered position rather than an evasion: a supply company that started advising on application would be doing something other than supplying, and would be doing it without knowing anything about the study it was advising on. Questions about purity, batch documentation, format, availability and logistics are answered readily — see the Peptide Works contact page for how to raise them. Questions about how to use a compound are not.
The full conditions of sale are set out in the terms and conditions, and data handling in the privacy policy. Background on the company and its standards is on the about page, and the wider service range on the services page.