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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)

    Stacey Brady
    Rated 5 out of 5
    April 22, 2026
    Great job! Even with backorder product came quicker than expected.
    Anonymous
    Rated 5 out of 5
    April 21, 2026
    Came in quickly and in perfect shape.
    Steven Casper
    Rated 5 out of 5
    April 16, 2026
    Thank you Pepkits for bring so amazing. Your pep is amazing strong and works amazing!! You have super clean COA'S and amazing prices. I know my pep works amazing. Very legit product. Thank you Steve-0-Casper
    Timothy Crane
    Rated 5 out of 5
    April 10, 2026
    Best price, super effective compound, great service. I will continue to buy from Pepkits exclusively
    Aden
    Rated 5 out of 5
    April 10, 2026
    Shipping was quicker than expected even with it being a pre order, very satisfied with product
    Blaine Randolph
    Rated 5 out of 5
    April 9, 2026
    100% trusted and will buy again
    MamaPepper49770
    Rated 5 out of 5
    April 4, 2026
    Was leery because I have been burned elsewhere so I only ordered one vial. Happy with how quickly I received my package and am confident I have found my new supplier. Will be purchasing from again.
    RT3 (Reta) photo review
    toposbshop
    Rated 5 out of 5
    March 30, 2026
    Order Monday 2 day shipping got my package Wednesday…thank you.
    Leah Braden
    Rated 5 out of 5
    March 30, 2026
    Love Pepkits! Got my order fast and in good condition. Definitely ordering again.
    Amy C
    Rated 5 out of 5
    March 30, 2026
    Sooooo much better then what I was using before and customer service and shipping it too tier
    Amy C
    Rated 5 out of 5
    March 30, 2026
    If anyone is doubting if this is legit last week was my 5th week second with pepkits prior I was using something else but last week was my best week since I started!!! Even better than the first week with that big shift I didn’t think I would see again. So don’t doubt just get it!! It’s legit!
    claudia ojeda
    Rated 5 out of 5
    March 29, 2026
    Great product!
    rob
    Rated 5 out of 5
    March 29, 2026
    Came fast and is very useful
    Orlando
    Rated 5 out of 5
    March 28, 2026
    Great product Great price
    Lex
    Rated 5 out of 5
    March 25, 2026
    I was pretty scared to order at first but everything about the process was so organized and just felt right so I decided to order and I am so grateful I did. They sent my package yesterday and I had a problem and within 5 minutes the support team reached back out to me with a solution!
    Samira
    Rated 5 out of 5
    March 24, 2026
    Amazing! I'm loving the results
    Brittney
    Rated 5 out of 5
    March 24, 2026
    Got my Order fast! Great customer service and price. That’s important I can’t wait to try the product and tell my friends.
    Laura Lucio Falcon
    Rated 5 out of 5
    March 23, 2026
    My order came in within one week. Things I learned..1. Check your junk mail! 2. Order on your computer NOT your phone. Product came in packaged with no issues.
    Tcornett09
    Rated 5 out of 5
    March 23, 2026
    Got my first purchase from this company ordered. From other companies in the past and this was by far the best company I’ve ordered from from pricing, shipping, even the packaging was the best. I’ve found my go to source.
    RT3 (Reta) photo review
    Blaine Randolph
    Rated 5 out of 5
    March 23, 2026
    Received my Reta very quick within 2 days great recommended!
    Bobbi Davis
    Rated 5 out of 5
    March 22, 2026
    Was my very first purchase of peptides that weren’t formulated through a pharmacy. Loved the price. My order came quickly. Can’t wait to try some more!
    Jenn P
    Rated 5 out of 5
    March 20, 2026
    Great Customer Service. Fast shipping. Responded within minutes when I contacted them with a question. Highly Recommend!
    RT3 (Reta) photo review
    Delinah W.
    Rated 5 out of 5
    March 20, 2026
    I’m hooked on Pepkits.shop!! Always great customer service with speedy replies and lightening fast processing and shipping. I started RT-3 several weeks ago, it’s amazing and definitely living up to all the hype! Ordered GHK-CU and got it in less than a week. You guys rock!!!! 💙
    Jessie Garcia
    Rated 5 out of 5
    March 20, 2026
    Fast shipping and amazing customer service. Reached out and within minutes I had a response from them.
    cchynowe04
    Rated 5 out of 5
    March 20, 2026
    Great product and it’s working great!
    Paulina Soto
    Rated 5 out of 5
    March 19, 2026
    Great customer service, fast shipping and great results
    RockyAmaya
    Rated 5 out of 5
    March 19, 2026
    Fast shipping. Good customer service
    Rated 5 out of 5
    March 19, 2026
    Very fast shipping and such a great quality product! I’ve been testing Reta for a month now and you can totally tell that it’s working!
    nrseprnces
    Rated 5 out of 5
    March 19, 2026
    Reta has been a life saver for me!!! I have been on it for 9 months and could not be happier. Pepkits has been a pleasure to work with. Very responsive to questions and very quick shipping
    Joe M
    Rated 5 out of 5
    March 19, 2026
    Fast shipping, and the customer service was on point
    Amy Collins
    Rated 5 out of 5
    March 17, 2026
    First of all customer service is great. Shipping fast today is day two and I’m already noticing a difference. Will definitely keep using pepkits
    AO
    Rated 5 out of 5
    March 15, 2026
    Fast shipping and great product! Such great prices compared to other companies. Within just a couple of days i can feel Reta working. Can’t wait to restock soon!
    RT3 (Reta) photo review
    Vaneza Gomez
    Rated 5 out of 5
    March 12, 2026
    Received my package at a timely manner, easy to order and great customer service! I’m a couple days in and I feel great!
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