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RT3 (Reta)

Rated 5.00 out of 5 based on 133 customer ratings
(133 customer reviews)

Price range: $25.00 through $160.00

High-purity triple receptor agonist research peptide (GLP-1/GIP/glucagon). ≥99% purity, USA-tested, lyophilized. For research use only.

Certificate of Analysis 3rd-party tested · RP-HPLC purity, ESI-MS identity, Karl Fischer moisture View Lab Report
- +
≥99% Purity — COA Available
Third-Party Lab Tested & Batch Certified
Ships in 1–3 Business Days
All sales are final. Due to the nature of the product, no returns, refunds, or exchanges are accepted once an order is placed.
SKU: RT3 Category:

RT3 — Triple Receptor Agonist Research Peptide

RT3 is a next-generation research peptide engineered to simultaneously engage three metabolic receptor targets: GLP-1, GIP, and glucagon receptors. This triple agonist mechanism represents a significant advancement over single- and dual-receptor compounds in preclinical metabolic research.

Mechanism of Action

RT3 activates glucagon-like peptide-1 (GLP-1) receptors to potentiate glucose-dependent insulin secretion, glucose-dependent insulinotropic polypeptide (GIP) receptors to enhance incretin signaling, and glucagon receptors to promote energy expenditure and lipid oxidation. The combined activation of all three pathways creates a synergistic metabolic effect studied extensively in preclinical models of obesity and insulin resistance.

Research Applications

  • Metabolic pathway modulation and energy homeostasis
  • Insulin sensitivity and glucose regulation studies
  • Appetite signaling and food intake research
  • Body composition and lipid metabolism investigations
  • Comparative studies with single- and dual-receptor agonists

Product Specifications

  • Quantity: 10mg per vial
  • Purity: ≥99% (HPLC verified)
  • Form: Lyophilized powder
  • Storage: Refrigerate after reconstitution
  • Testing: USA lab tested, COA available

For research purposes only. Not for human use or consumption.

Weight .25 oz
MG

5mg, 15 mg, 10mg, 30mg, 60mg, 20 mg

133 reviews for RT3 (Reta)

    Mitchell
    Rated 5 out of 5
    May 15, 2026
    Got scammed by a company ordered from pepkits shipped the next day. Super fast delivery definitely recommend gonna order more top notch company
    Bri
    Rated 5 out of 5
    May 15, 2026
    The product was amazing 😍😍
    jasonpkamel
    Rated 5 out of 5
    May 14, 2026
    Amazing product, shipped quick and received my package within 2 days. Ordered from other companies and after a week the other company hadn’t even shipped.
    vcrts
    Rated 5 out of 5
    May 14, 2026
    Fast shipping
    Juan Gonzalez
    Rated 5 out of 5
    May 14, 2026
    Pepkits is the go to place for very responsive customer service and an excellent product with COAs. Iv have nothing but good things to say about the owner and his company. 100% recommended! Thank you pepkits!
    Temari
    Rated 5 out of 5
    May 13, 2026
    I gotten my peptides within a week or less of ordering and they’re really great quality as well as the BAC water highly recommend!
    martinezg2411
    Rated 5 out of 5
    May 12, 2026
    First time ordering, got here within a week. Can’t wait to try!
    RT3 (Reta) photo review
    arturos121594
    Rated 5 out of 5
    May 11, 2026
    This is the fourth time I've ordered it, and it works wonders;
    Anthony
    Rated 5 out of 5
    May 11, 2026
    Amazing product most reliable and affordable website I found to date been purchasing from them since I found out about these guys great stuff!
    Anonymous
    Rated 5 out of 5
    May 11, 2026
    Christy A.
    Rated 5 out of 5
    May 11, 2026
    Anonymous
    Rated 5 out of 5
    May 10, 2026
    Great product
    Azaria
    Rated 5 out of 5
    May 10, 2026
    So cheap! Better than any otherss ive seen ngl
    Heather Hayden
    Rated 5 out of 5
    May 9, 2026
    5/5 stars. Will continue to order all my pep needs from Pepkits. Easy ordering process, full transparency, tracking, quick arrival of my products. Could not ask for Moore.
    Chris Wagner
    Rated 5 out of 5
    May 9, 2026
    Great product, great prices, fast shipping.
    Anne M.
    Rated 5 out of 5
    May 8, 2026
    BJohnson
    Rated 5 out of 5
    May 8, 2026
    We love Pepkits! The prices are fantastic, product is high quality and verified, and the website is easy to use. I contacted Customer Service once with a minor billing question and they responded immediately. We will continue to refer friends and family!
    Eduardo Vasquez
    Rated 5 out of 5
    May 8, 2026
    Great price and shipping was fast.
    jake7wick
    Rated 5 out of 5
    May 7, 2026
    Fast shipping and great product. Will only be shopping with Pepkits!
    Stacy B.
    Rated 5 out of 5
    May 7, 2026
    Absolutely wonderful product!!
    Antonio
    Rated 5 out of 5
    May 7, 2026
    Anonymous
    Rated 5 out of 5
    May 5, 2026
    Great!
    Nakiva D.
    Rated 5 out of 5
    May 5, 2026
    Miguel
    Rated 5 out of 5
    May 4, 2026
    Fast shipping and customer services is on point! Definitely ordering again!
    Sage Gummerson
    Rated 5 out of 5
    May 4, 2026
    I had a mix up with my order but the team at pepkits took care of it and corrected everything relight away. Great customer service!!
    Kennedy
    Rated 5 out of 5
    May 4, 2026
    Works very well and came really fast!
    Anonymous
    Rated 5 out of 5
    May 4, 2026
    Kailey Scott
    Rated 5 out of 5
    May 4, 2026
    Best product and price - lab rat loves the r3ta blend, Thank you guys so much!
    AJ
    Rated 5 out of 5
    May 2, 2026
    The greatest product ever! This stuff is like a miracle!
    George
    Rated 5 out of 5
    April 29, 2026
    Was in with pepkots when there was a lot of options, expensive options, and I I tried this new guy on TikTok and haven’t looked back! Prices are great even though availability is low across the pep sites I just stay here and reap the benefits! Customer service is top notch also, he answers from TikTok and site so probably needs some sleep but whatever McLaren he drives he earned! Trying ghcu next and I’ll review it but ret is A+
    Anonymous
    Rated 5 out of 5
    April 29, 2026
    On my first week havent had any issues
    estulken24
    Rated 5 out of 5
    April 29, 2026
    Amazing results so far and super fast shipping. Will be purchasing more!
    Weston
    Rated 5 out of 5
    April 29, 2026
    Heather Hayden
    Rated 5 out of 5
    April 29, 2026
    Excellent experience. Quick shipping. Will continue to purchase all my peptides here.
    Crystle
    Rated 5 out of 5
    April 28, 2026
    Blake
    Rated 5 out of 5
    April 28, 2026
    Ordering to Alaska has its issues but eventually made it. Thanks guys
    Anonymous
    Rated 5 out of 5
    April 28, 2026
    Trust worthy
    mike.nowak.pps
    Rated 5 out of 5
    April 28, 2026
    This was my first time ordering from "Pepkits". I placed my order on Saturday and it arrived today, Tuesday. From beginning to end so far the service has been exceptional. I reached out to them in a private DM and they responded within 10 minutes with the appropriate responses. I plan on placing another order within the next week or two to keep a steady supply for my animals. I will do more updates as my testing journey continues. So far, I would rate "Pepkits" a 5 star. I absolutely recommend getting your testing equipment from them!
    Robert.
    Rated 5 out of 5
    April 28, 2026
    Fast shipping, comes with certificate of analysis, works as it should, and it's priced right! What more could you want! The customer service is unmatched and the fast shipping really has me locked in. Thank you Pepkits!
    Desiree
    Rated 5 out of 5
    April 27, 2026
    Awesome product I started on 2.5 and now I’m at 4.0 and seen excellent results and customer support is great too, also shipping is very fast and vials come packaged securely. 10/10 will continue to order!
    Anonymous
    Rated 5 out of 5
    April 27, 2026
    Christine
    Rated 5 out of 5
    April 26, 2026
    This is my 2nd time ordering from them, the delivery and product quality have been on point. Totally recommend.
    Tristen G.
    Rated 5 out of 5
    April 26, 2026
    Great Product and fast delivery!
    kayleere09
    Rated 5 out of 5
    April 26, 2026
    *This review has been edited to protect the nature of our products.*I have never bought peptides and I was a little concerned that I would get scammed however my test subject woke up the day after researching with no appetite and it is doing great. It has so much energy I was concerned about the anhedonia people were talking about but it started at .5 and didn’t have any side effects no nausea or anything and it’s sleeping better too! Either way if you are thinking about buying absolutely do it
    Toni
    Rated 5 out of 5
    April 26, 2026
    My order said would take 1-3 weeks literally arrived 4 days later. Fast and reliable my go to for building my stacks. Even got my boyfriend hooked.
    RT3 (Reta) photo review
    albertcruz060691
    Rated 5 out of 5
    April 25, 2026
    Very satisfied super fast shipping will be placin another order today keep up the honest biusness
    Xotiic 907
    Rated 5 out of 5
    April 25, 2026
    Amazing results came within a week Amazing pricing
    Xotiic 907
    Rated 5 out of 5
    April 25, 2026
    Amazing results
    Paige
    Rated 5 out of 5
    April 24, 2026
    Soniarys
    Rated 5 out of 5
    April 24, 2026
    Perfect!!
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