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5 Best Peptide Sources / Companies For 2023

Perhaps you’ve heard of the compound but do not know where to begin when it comes to locating the best peptide source online?

It’s understandable to have questions or concerns as peptides remain foreign to many consumers.

It’s a shame considering these little strings of amino acids are actually far more common than most people assume.

In fact, peptides are naturally produced in your body as well as essential “building blocks” for proteins.

For this reason, there is support to utilize peptides in daily supplementation for a variety of conditions that range from skin issues to losing weight.1

Sadly, the FDA is behind on peptides like many alternative health care products leaving customers to search online for supplements.

It’s the reason we reviewed the 5 Best Peptide Companies for 2023 to make the shopping experience much more educational, as well as beneficial.

IMPORTANT: The below peptides are NOT intended for those under the age of 18. If you are under the age of 18, do NOT consider taking them under any circumstances whatsoever.

#1. Core Peptides

core peptides is one of the best peptides sources on the internet

Note: Visit the official Core Peptides website here:

First up on our list of the best peptide sources and companies is none other than Core Peptides.

The company is known for its rigorous quality control testing with purity standards that must exceed 99%.

Core features same-day shipping on all U.S. orders with credit cards and other payment options available.

If you are unsatisfied with the peptides simply return with confidence thanks to their money-back guarantee.

Core Peptides stands behind its reputation and provides a full 30-day refund on all purchases.

Core samples its peptides through multiple rounds of high-performance Liquid Chromatography (comparable to testing standards at Sports Technology Labs below).

The series of tests remove the formula from all contaminating reagents or harmful byproducts of synthesis.

It’s natural to feel a little hesitant or nervous about purchasing supplements online.

However, Core Peptides is a trustworthy brand that offers a convenient and secure checkout process.

Once again, the company is based out of the United States and it shows thanks to the excellent customer service.

The only thing Sports Technology Labs may have them beat on is pricing – otherwise, the two manufacturers of peptides are very comparable.

Shop for Core Peptides on their official website.

Click Here to visit the peptides section on the official Core Peptides website.

#2. Sports Technology Labs

sports technology labs is one of the best peptide sources

Note: Visit the official Sports Technology Labs website here:

Sports Technology Labsis another one of the the best peptide sources for safe and effective supplementation.

The industry leader specializes in science – unlike a lot of cheap supplement manufacturers that are simply in it for profit.

Thus, Sports Technology Labs stands behind its anti-aging and metabolic research as well as production standards.

The company thoroughly tests its peptides utilizing advanced HPLC/MS technology.

It ensures the consistency and purity of each supplement are precise, safe, and effective for users.

Sports Technology Labs is a company proud to do business in the United States and doing so with nearly a decade worth of experience (founded in 2013).

It has enabled Sports Technology Labs to evolve into one of the pioneers of peptides.

The first-class service at Sports Technology Labs keeps the focus on quality manufacturing while keeping prices reasonable.

It’s what ultimately keeps Sports Technology Labs in the discussion for the best peptide resource online – their prices are nearly unbeatable!

The low prices allow Sports Technology Labs to remain competitive with the other premiere peptide suppliers.

Sports Technology Labs are for sale online with fast and secure shipping available worldwide.

Click Here to visit the peptides section on the official Sports Technology Labs website.

#3. Pure Rawz

pure rawz is a great peptides source

Note: Visit the official Pure Rawz website here:

Pure Rawz was once better known for selling high-quality SARMs.

SARMS are a class of therapeutic compounds that work similarly to steroids, but don’t have all of the unwanted side effects that come from steroid use.2

However, the reputation of the brand took a hit after its marketing tactics got a little over-aggressive.

It also doesn’t help that the company tends to highlight all the benefits of SARMs while failing to ignore any of the potential issues.

Regardless, it’s hard to blame Pure Rawz for believing in its supplements and selling them hard to consumers.

The bottom line is Pure Rawz still features an extensive catalog of peptides that is as deep as any supplier.

Traditional peptides like Ipamorelin, BPC-157, and TB-500 are available along with harder-to-find compounds like Tesamorelin and Hexarelin.

The prices and shipping arrangements are also competitive with some of the other best peptide sources.

Additionally, the company assists in taking out some of the guesswork for newcomers when it comes to building a weight stack.

New customers seeking to lose weight and gain muscle will appreciate the predesigned weight stack and workout cycle bundles available on Pure Rawz.

Lastly, the supplier also features predesigned bundles for Post Cycle Therapy (PCT).

Shop for peptides and other supplements at Pure Rawz.

Click Here to visit the peptides section on the official Pure Rawz website.

#4. Paradigm Peptides

paradigm peptides is a legit peptides company

Note: Visit the official Paradigm Peptides website here:

Paradigm Peptides not only has a stylish name but a method to its madness.

The manufacturer specializes in premium peptides and Selective Androgen Receptor Modulator (SARMs), comparable to Pure Rawz.

The top-quality peptides are supported by research as well as careful analysis of each order.

Paradigm Peptides insists on independently testing their supplements in order to guarantee authenticity and purity.

The “above 98%” purity standard at Paradigm Peptides is nearly as high as the precedent created at Core.

Here are some of the primary highlights of shopping with Paradigm Peptides:

  • U.S. Small-Business
  • Independently Tested
  • Fast & Secure Shipping
  • Customer Support

Once again, like Core Peptides, the same-day shipping on all U.S. orders is impossible to beat.

Furthermore, Paradigm Peptides ensures the safe handling of all purchases by providing packaging and proper storage during shipment.

It’s important to note that the peptides prepared at Paradigm are artificially created yet designed to replicate/trigger chemical processes that naturally occur in the body.

As a result, Paradigm only offers its peptides for sale in lyophilized (freeze-dried) powder form.

In other words, you’ll need to reconstitute the freeze-dried powder before use in order to stabilize and protect the compound from degradation.

The ingestion technique is different compared to other suppliers like Pure Rawz – which is notorious for offering peptides and SARMs in a variety of different formats.

These include consumption methods such as taking a capsule or tablet each day.

Nevertheless, with Paradigm Peptides, you can feel safe and secure in your purchase.

The company is always striving to offer the finest chemicals and compounds while utilizing cutting-edge production techniques.

Click Here to visit the peptides section on the official Paradigm Peptides website.

#5. Swiss Chems

swiss chems sells high quality peptides online

Note: Visit the official Swiss Chems website here:

Swiss Chems gets the attention of customers immediately with its not-so flashy website.

One other thing you’ll notice is that they sell a TON of different products, including: 

  • Peptides
  • Nootropics
  • PCT

and much more…

Of course, the focus of this post is about peptides, so we’ll just stick with them.

Another thing you’ll notice is that they have a LOT of peptides. They stock virtually every peptide in existence, and rarely do they run out of product.

Their pricing is also on par with many other peptide companies and suppliers, so no worries there.

The only downside I can think of (at the moment, at least) is that ordering from them can be a little bit of a headache.

While they do offer several ways to pay for your order, including bank transfers and cryptocurrency, most people opt to pay with a credit card out of convenience.

This is where they tend to fall a bit short…

You can’t just put in your CC number on the checkout page and be done with it, that would be too easy.

No, instead, you get redirected to a different site called ‘Max Redemption’, which requires you to sign up for an account.

It’s just another step in the process that takes a bit longer, but ultimately, you will get exactly what you ordered.

In any event, Swiss Chems is a good peptides source and they sell at reasonable prices.

Click Here to visit the official Swiss Chems website.

Searching for the Best Peptide Source

Interestingly enough, a variety of different peptides exist in the human body.3

Consequently, peptides offer numerous different roles to the needs of your body which makes them full of potential in the research community.

While the FDA is seriously slacking on producing more government-supported studies on peptides, initial research is encouraging.4

Peptides are believed to produce several benefits, including:

  • Anti-Aging
  • Muscle Growth
  • Skin Issues
  • Weight Loss

What’s more, the list of potential benefits does not simply end with this list; it’s merely a basis.

Losing Weight & Gaining Lean Muscle

For those seeking to lose weight and/or gain muscle – peptides may be a solution.

They represent an emerging category of supplements that are capable of improving lean muscle and mass without the horrible side effects of performance-enhancing drugs.5

Rather, peptides operate by producing compounds like creatine and collagen – notoriously linked to muscle growth.6 7

Meanwhile, peptides such as Ipamorelin have connections to weight loss though more research is necessary to reach a full conclusion.

Lastly, peptides may assist in muscle repair as well as produce other anti-aging properties for men.

Conclusion: What is the Best Peptide Source?

The future of peptides in terms of helping individuals lose weight and gain muscle is bright!

The protein “building blocks” that are peptides are leading to impressive results for some in the gym.

You can also achieve the body definition that you always craved by building the correct weight stack for your needs and cycling properly.

If you would like to implement one or more peptides into your weight stack, you may be asking…

What is the most trustworthy and best peptide source online?

Core Peptides almost always offers lower prices compared to its competitors.

It’s what has built a stellar reputation for the company along with being located here in the United States.

Meanwhile, Sports Technology Labs are nearly equal in many aspects.

The brand features same-day shipping, high testing standards, as well as a 30-day money-back guarantee.

Paradigm Peptides and Pure Rawz are also noteworthy for their deep catalog of peptides and SARMs.

Finally, Swiss Chems is an interesting consideration because it’s not afraid to operate a little differently compared to its competitors.

Regardless of your final destination, you’ll find value in all these suppliers.

It’s why they all deserve recognition as the best peptide source online.

Peptides, like many muscle growth alternatives, remain unregulated by the FDA.

Consequently, finding reliable, pure, and trustworthy compounds is not always easy.

Thus, sticking to one of our selections for the best peptide source will save you time, frustration, and potentially adverse effects.


  1. Martínez-Villaluenga C, Hernández-Ledesma B. Peptides for Health Benefits 2019. Int J Mol Sci. 2020;21(7):2543. Published 2020 Apr 6. doi:10.3390/ijms21072543 (source)
  2. Solomon ZJ, Mirabal JR, Mazur DJ, Kohn TP, Lipshultz LI, Pastuszak AW. Selective Androgen Receptor Modulators: Current Knowledge and Clinical Applications. Sex Med Rev. 2019;7(1):84-94. doi:10.1016/j.sxmr.2018.09.006 (source)
  3. Forbes J, Krishnamurthy K. Biochemistry, Peptide. [Updated 2021 Sep 1]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan. (source)
  4. Martínez-Villaluenga C, Hernández-Ledesma B. Peptides for Health Benefits 2019. Int J Mol Sci. 2020;21(7):2543. Published 2020 Apr 6. doi:10.3390/ijms21072543 (source)
  5. Helms ER, Aragon AA, Fitschen PJ. Evidence-based recommendations for natural bodybuilding contest preparation: nutrition and supplementation. J Int Soc Sports Nutr. 2014;11:20. Published 2014 May 12. doi:10.1186/1550-2783-11-20 (source)
  6. Wu SH, Chen KL, Hsu C, et al. Creatine Supplementation for Muscle Growth: A Scoping Review of Randomized Clinical Trials from 2012 to 2021. Nutrients. 2022;14(6):1255. Published 2022 Mar 16. doi:10.3390/nu14061255 (source)
  7. Zdzieblik D, Oesser S, Baumstark MW, Gollhofer A, König D. Collagen peptide supplementation in combination with resistance training improves body composition and increases muscle strength in elderly sarcopenic men: a randomised controlled trial. Br J Nutr. 2015;114(8):1237-1245. doi:10.1017/S0007114515002810 (source)

See Also 

Gonadorelin Review: 10 Benefits For Men & Women

Sermorelin Review

Thymosin Alpha 1 Peptide: Benefits, Dosage, Side Effects, & More

Thymosin Beta 4 (TB4) Peptide: Benefits, Dosage, Side Effects, & More

Rob V.
Best Peptide Companies

Best Peptide Companies

4.5 out of 5 (29 Ratings)

If you're looking for the best place to buy peptides, consider checking out these 5 companies. They are the most legit peptides sources on the market today.
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