Best Peptide Companies and Sources

With so many options online, and Bezos not looking like he's gonna stock the stuff soon, how do you know where to get your peptides? Let's find out.

Let’s face it. You’re spoiled rotten aren’t you. You have so many options for Peptide Suppliers you’re not even sure which one to go for anymore! This one has great marketing, but that one has better Third Party Tested results.

Obviously you should go for the first, right? Fear not my friend for in the next 10 – 15 minutes we’re going to whittle down this castle of confusion and get to the bottom of it. Who are really, the Best Peptide Companies

Category 📚Mechanism 🪓Popular Peptides ⭐
Muscle BuildingIncrease in amount of cells – HyperplasiaGHRP, GHRH
Fat LossLimits lipoprotein lipase (LPL)HGH, HGH Fragment
RecoveryIncreased blood flowTB500, BPC 157
OthersTan, Increased apetiteMelanotan, GHRP-6

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Best Places to Buy Peptides Online

pure rawz reviewBest Peptide Companies and SourcesBest Peptide Companies and Sources
Best Peptide Companies and Sources
Form of Peptides
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Refund PolicyWrong items will be exchanged or refunded within 7 days of delivery dateUnknownReturn orders within 7 days of delivery date as long as product is sealed and unopened; restocking fee of 15%.No returns but exchange for damaged products only.
Other Product OfferingsSARMs; Peptides; Nootropics; Botanicals; Cannabis; Kratom and SupplementsResearch Chemicals; Pro Hormones; Aminos; Reserach Oils; SARMs; Sprays and Gym WearMetabolics; Naturals; Nootropics; Longevity; SARMs; Ktratom; Male Enhancement Pills; Nootropics; Post Cycle TherapyPeptide Blends
Full ReviewPure RawzAmino AsylumSwiss ChemsBiotech Peptides

Best Peptide Companies

#1 Most Trusted Peptide Vendor


A company that only specializes in Peptides? Yes please. BiotechPeptides pride themselves on being some of the leading developers of American made peptides at an affordable price.

With a wide range of injectable Peptides and even some topical ones, BiotechPeptides is sure to have everything you need. They even stock some interesting blends, like Growth Hormone Secretagogues with AOD 9604 – Fat loss for days!

As time goes on they will continue to expand their range of products to include more, and newer Peptides as well.

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Read full Biotech Peptides review


  • Great pricing
  • Wide range of peptides
  • Interesting peptide stacks


  • Could benefit from a wider range of Peptides
  • More reviews would look better
#2 Most Trusted Peptide Vendor

Sports Technology Labs

STL is one of the most trusted research chemical suppliers on the market, and till recently only supplied SARMs. Then, in late 2022, they introduced a line of Peptides as well.

The Peptides have incredibly high quality, something you would come to expect from STL. All their batches are tested before being packaged and sold.

They do stand to increase the Peptides they offer, but I’ll give them time. Their prices are reasonable, especially considering their quality is some of the best there is.

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Read full Sports Technology Labs review


  • Offers SARMs as well
  • Every batch is tested for quality


  • Other companies have more peptides
#3 Most Trusted Peptide Vendor

Pure Rawz

Pure Rawz is a site that just looks the business. And by judging the amount of products they sell, they are absolutely just the business. Supplying everything from peptides, to SARMs, to other research chemicals. They’ve branched out to provide liquid and tablet SARMs which is a nice touch.

The also have a great range of peptides, and peptide combinations. The point system they run is something that is always going to be beneficial for saving a few bucks, and the fact that they’re US based, combined with the competitive pricing means they’re really up there in the ranks of great peptide companies.

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Read full Pure Rawz review


  • Wide range of products
  • Cost effective
  • Provides COA
  • Worldwide shipping
  • Regular sales and discount codes


  • Certificates of authenticity not always available
  • Does not accept credit cards
#4 Most Trusted Peptide Vendor

Amino Asylum

Amino Asylum prides themselves on providing the highest quality research products, as they do not just provide Peptides. SARMs, PCT Products, Research Chemicals, and as the name suggests, Amino Acids as well.

With great reviews online, on site and on Reddit, their products hold true to the core value of the company. They might not be the most cost effective in the list, but you’re paying for quality. Just be warned that some individuals have said that the payment process combined with the shipping time can be a bit long.

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Read full Amino Asylum review


  • Massive Range of products available
  • Somewhat Cost effective


  • Payment times can take long apparently
#5 Most Trusted Peptide Vendor

Paradigm Peptides

Established in 2014, Paradigm Peptides really focused on supplying high quality peptides, SARMs and other research products to their customers. Producing in the States, Paradigm has some mixed reviews online. The reviews on their site are all 5 star. All of them, barring a select few. This to me is a big red flag, as it’s virtually impossible to perfectly satisfy every single customer.

Offering a wide range of products, ranging from peptides, to SARMs, to CBD products as well. They also provide Lab Equipment which is a nice touch. Their UX and UI is pretty good quality, and they have quite a few payment options available.

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Read full Paradigm Peptides review


  • Bitcoin is a payment method
  • Very up to date blog
  • Wide variety of products


  • Other companies have more peptides
  • Other companies have better reviews on Reddit
#6 Most Trusted Peptide Vendor
Best Peptide Companies and Sources

Peptide Sciences

Peptide Sciences is one of the online venders with the widest range of peptides I have seen. The list is more impressive than your browser history, and the dosing variations of the products is truly remarkable. They’re also really driven to educate people on the different products they have.

They also provide blends of products like this CJC 1295 with the appropriate GHRP-6.  The only real drawback they have as a vendor, is the fact that they do not provide any reviews on their website. For that you’ll have to pop over to Reddit, however when you’re there you will not be disappointed. The anecdotal evidence fits perfectly with their vision of superior quality peptides.

Read full Peptide Sciences review


  • Highly researched and regulated products
  • Massive range available 
  • Offers bulk buy options


  • No customer review 
  • No cashback or return option available 
  • Only provides on product, peptides
#7 Most Trusted Peptide Vendor

Swiss Chems

Swiss Chems is a company that sells quite a range of peptides, but also sells a lot of SARMs and accessory items as well.  They really pride themselves on quality, posting Independent Testing Results, and really striving to be open about the quality of their products.

They provide a great range of peptides, ranging from bog standard BPC 157 to more interesting things like EPO (Erythropoietin). They have great reviews on their site, as well as on Reddit. They provide a Cashback Program, Affiliation, and just has one of the better UX and UI that I’ve encountered in my research.

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Read full Swiss Chems review


  • COAs published for all SARMs
  • 20% crypto discount
  • Sells global


  • Injectable SARMs are no longer sold
  • Does not offer SARMs in powder form
  • 15% restocking fee on returns

So, which is best?

The age old questions. Who does mom love more, me or my perfect, overachieving brother? Do I buy a Challenger or a Mustang? And why hasn’t dad come back from the store yet, it’s been 5 years? Okay, if I were to purchase from one of these vendors I would probably go for BiotechPeptides, or if they were out of stock, either Pure Rawz, Swiss Chems or Science Peptides.

Best Peptide Companies and Sources

Biotech might be newer to the scene than some of the others, and them only stocking Peptides migth seem bad, but to me this means they can focus ONLY on Peptides. That means a far superior quality product, and pricing to match.

Unfortunately, when it comes to these types of products, you get what you pay for. Buying the cheapest option you can get your hands on is just a sure fire way of getting inferior products and being left disappointed. While Pure Rawz is cost effective, it’s not to such an extend where it’s worrying.

They have a good UX and UI, and really strive to be transparent about their products and the quality of them as well.

pure rawz review

Their site has a great synergy of amazing reviews and people who just felt lukewarm about their products, which is how it’s supposed to be. Some had complaints with shipping, which is expected in Covid times. Pure Rawz is 100% legit, and a great company.

Swiss Chems is another company that doesn’t create some facade of perfection. They have a great range of products, peptides, SARMs, and other research chemicals. They aren’t super expensive, in fact they have great deals at most times, as well as a nifty cashback system as well. Reviews are split between great product and service vs bad service. They do offer quite a few payment methods, but unfortunately they do not cover shipping costs. All in all, Swiss Chems seems like a good peptide vendor.


Lastly, we have Peptide Sciences. Looking at their site, you’ll be met with a cold environment. Precise. Calculated. Like a surgeons tool. That’s what they represent, and I like it. I would pick calm and calculated over flashy and taking the wrong product due to negligent manufacturing processes. Peptide Sciences emphasizes that they provide exceptional quality, and they have COA to back their claims. Looking at online reviews (they don’t provide on site reviews) you’ll see that people are willing to cough up the price difference, because they’re just that good.

Best Peptide Companies and Sources

What are Peptides?

Just a variation of amino acids really. Yup, the thing that you think will turn you into Ronnie Coleman overnight is simply just combinations of good ‘ol Arginine and Leucine. Well, it’s a bit more complicated than that. See, peptides are chains of certain amino acids, but do not get classified as proteins.

Best peptide vendors

The bonds between these amino acids are called “Peptide Bonds”, hence the name peptides. Peptides usually contain 2-50 amino acids within its chain, and depending on which amino acids and the sequence, it can have varying effects on the body. Peptides are found everywhere in nature, from eggs to plant proteins. The most common ones we know of in a commercial sense, are Collagen and Creatine.


This Bulk Supplements Collagen is a form of peptides. Collagen is technically a protein, but the end product your body actually uses are Collagen Peptides. Same goes for Creatine, just a sequence of amino acids. These amino acids will act upon the body, and the most common mechanism they undergo, is causing the release of Growth Hormone. Growth hormone is really the king of peptides, and can lead to muscular growth, fat loss, general well being as well as making you look better; younger. Look at any pro’s cycle, we commonly see 3-4 units of HGH daily in their protocol.

How do Peptides work?

Peptides work completely different to exogenous hormones and SARMs. While those cause hypertrophy, peptides (those that are used for growth) cause hyperplasia. Hyperplasia is the growth of the number of muscle cells within a muscle. Hypertrophy is the growth of existing muscle cells. This may sound very intriguing, but the growth of those new muscle cells takes ages to actually show up. That’s why we almost always hear people say “Yeah HGH is great but man it takes so long to see the effects so you gotta run it like 90 days straight!”.

Best Peptide Companies and Sources

The combination of SARMs or Steroids with muscle growth peptides would theoretically create a fantastic synergy for muscle growth. Compared to the former two, peptides provides fewer side effects which increases the appeal of them significantly. Bonus, peptides aren’t only just for muscle gain.

Peptide Benefits

You drive a Ferrari because you want people to think you can drive fast. You drive a Mustang because you hate crowds. And you drive a Prius because you hate yourself. Every car has a purpose, and so do peptides. There are frankly too many to mention, but they usually fall into 4 main categories: Muscle builders, fat loss accessories, recovery helpers, and then a few random ones doing very niche and specific things.

Category 📚Mechanism 🪓Popular Peptides ⭐
Muscle BuildingIncrease in amount of cells – HyperplasiaGHRP, GHRH
Fat LossLimits lipoprotein lipase (LPL)HGH, HGH Fragment
RecoveryIncreased blood flowTB500, BPC 157
OthersTan, Increased apatiteMelanotan, GHRP-6

1) Are Peptides Legal?

Peptides may only be sold as research chemicals, and may not be marketed as supplements or for human consumption.

2) Are Peptides Safe?

It depends. Theoretically, there are no unsafe products. They are only unsafe if you use them wrong. Inject 100 units of Growth in 2 days, yes you’ll most likely end up in ER – so don’t do that. Using 2 units of Growth daily , yes that’s relatively safe.

3) Can Peptides help for weight loss?

Absolutely. Peptides such as HGH or HGH Fragment can massively aid in weight loss.

4) How do I know if my Peptides are real?

Check the COA from the Peptide Vendors, and see if you feel/see results. If your BPC 157 isn’t making your injuries feel better, then it might be bunk. It won’t work on your heartbreak after failing that PR though. Those peptides don’t exist yet.

Daniel Louwrens CPT

Hi there! My name is Daniel Louwrens, and I have more than 10 years of experience in the bodybuilding & fitness world. I have graduated with a degree in Chemistry, and my aim with helping people is to educate people who have questions about anything and everything fitness: Training, Nutrition, Recovery, and PED's.

2 Responses

  1. Hi. What should I order to burn belly fat (diminish as in lose fat…weight loss AND to build muscle? Also, If I choose to go with the nasal spray option versus injection, how many sprays do I do in each nostril and how many days per week do I spray? Finally, would buying both CJC-1295 & Ipamorelin AND Tesamorelin sprays be a good combo to achieve both belly fat weight loss and building muscle?

  2. Hi. What combo of peptides should I purchase to 1. burn and lose belly fat? and 2? build muscle and increase libido? Also, if I choose to go with nasal spray option versus injections, how many sprays in each nostril and how many days per week do I take the peptides? Finally, would my buying the combo CJC-1295 + Ipamorelin along with Tesamorelin be the right combo to achieve the above results? If so, great. If not, what do you recommend I buy to reach my goals? Thank You!

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