Hey there, my fabulous Countesses and Counts! Today we’re diving into a topic that’s been on everyone’s mind (and in many of our news feeds!): GLP-1 medication pipelines.
Now, I know this can be a super confusing and sometimes overwhelming topic. We see all these different names—Ozempic, Wegovy, Mounjaro, Zepbound—and it can feel like trying to navigate a designer department store during a sample sale. But don’t worry, I’m here to help you get the lay of the land, from what these medications are to what the future might hold.
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What Are GLP-1 Medications, Anyway?
First things first, let’s get the sciencey part out of the way, but in a way that makes sense. GLP-1 stands for Glucagon-Like Peptide-1. Essentially, these are a class of drugs that mimic a hormone your body already produces. This hormone does some pretty amazing things, like:
- Telling your pancreas to release insulin when you eat, which helps lower your blood sugar.
- Slowing down how fast your stomach empties, which makes you feel full for longer.
- Acting on the brain to reduce your appetite and cravings.
The result? You eat less, feel more satisfied, and your body can manage blood sugar more effectively. It’s a game-changer for many people, both with and without type 2 diabetes.
Behind the Scenes: A Look at the Clinical Trial Phases
Ever wonder how a new drug goes from an idea to something your doctor can prescribe? It’s a long and very carefully monitored process called a clinical trial. Think of it like a journey with different checkpoints.
- Phase I: The Safety Check. This is the very first time the drug is tested on humans. It involves a small group of people (usually healthy volunteers) to see if the drug is safe, what the side effects are, and what the right dosage might be. At this stage, researchers are just looking for red flags.
- Phase II: The Efficacy Test. Once a drug is deemed safe, it moves to a larger group of people (usually a few dozen to a hundred) who actually have the condition the drug is meant to treat. The goal here is to see if the drug actually works and to gather more data on side effects.
- Phase III: The Big Comparison. This is the final and most extensive stage before a drug can be submitted for approval. It involves thousands of people and is often compared to a placebo (a dummy pill) or an existing treatment. This is where researchers confirm the drug’s effectiveness, monitor for rare side effects, and compare it to the current “gold standard” of care.
What GLP-1 Medications are on the Market?
There are currently 2 GLP-1 medications, Tirzepatide and Semagluide that have been FDA approved and are on the market. We’ve summarized these previously: Zepbound vs Wegovy for Weight Loss- What’s the Difference?.
What’s on the Horizon?
Eli Lilly
Bimagrumab
– Pills or Injectable? Injectable
– Stage? Phase II Trials
– What do we know about efficacy: The efficacy results for weight loss are promising, particularly when the drug is used in combination with other anti-obesity medications like semaglutide. In a Phase IIb trial (the BELIEVE study), the combination of bimagrumab and semaglutide resulted in a 22.1% weight reduction at 72 weeks. A key finding is that the majority of this weight loss (92.8%) was attributed to fat mass, with the drug also helping to preserve or even increase lean muscle mass, which is a concern with other weight loss medications.
–Note: This drug is a monoclonal antibody that targets activin type II receptors. It works by promoting muscle preservation and growth. While it’s often studied in combination with GLP-1 drugs for weight loss, its mechanism of action is distinct. It is not a GLP-1.
Mazdutide
– Pills or Injectable? Injectable
– Stage? Phase III Trials
– What do we know about efficacy: In studies on adults with overweight or obesity, mazdutide has shown a mean weight reduction of over 10% from baseline, with some studies showing reductions of nearly 15% at 48 weeks. A high percentage of participants achieved a 5% or greater weight loss, and a notable portion achieved a 15% or greater weight loss.
Orforgilpron
– Pills or Injectable? Pills
– Stage? Phase II Trials
– What do we know about efficacy: Efficacy results for weight loss from Phase III trials for people with type 2 diabetes have shown that at the highest dose, participants lost an average of 7.9% of their body weight (about 16 pounds) over 40 weeks. Earlier Phase II data for chronic weight management showed an even greater reduction of up to 14.7% over 36 weeks. A key feature of orforglipron is that it is an oral, small-molecule GLP-1 receptor agonist, which could offer an alternative to injectable medications.
Retatrutide
– Pills or Injectable? Injectable
– Stage? Phase III Trials
– What do we know about efficacy: Based on data from Phase II clinical trials, retatrutide has shown impressive efficacy for weight loss. In a 48-week trial, participants receiving the highest dose of retatrutide achieved an average weight reduction of 24.2%. This level of weight loss is higher than what has been observed with other currently available weight-loss medications in their respective trials. Retatrutide is a “triple-agonist,” meaning it targets three different hormone receptors (GIP, GLP-1, and glucagon), which is believed to contribute to its significant effects on both weight and metabolism.
Novo Nordisk
Amycretin
– Pills or Injectable? Both
– Stage? Phase III Trials
– What do we know about efficacy: In early-stage trials, it has shown impressive weight loss results: Injectable version: A Phase Ib/IIa trial showed that participants on the highest dose lost an average of 22% of their body weight over 36 weeks. Oral version: A Phase I trial demonstrated that participants on the highest dose lost an average of 13.1% of their body weight after just 12 weeks.
CagriSema
– Pills or Injectable? Injectable
– Stage? Phase III Trials
– What do we know about efficacy: CagriSema is a combination of two different drugs: semaglutide (the active ingredient in Wegovy and Ozempic) and cagrilintide (a new drug). In the REDEFINE 1 Phase III trial, participants with obesity or overweight and at least one related comorbidity (but without type 2 diabetes) experienced a mean weight reduction of 22.7% over 68 weeks.
Semaglutide
– Pills or Injectable? Pills
– Stage? Phase III Trials
– What do we know about efficacy: While an injectable version of semaglutide is already available, a pill version is in trials. In the OASIS 1 Phase III trial, oral semaglutide (50mg) showed an average weight loss of 15.1% over 68 weeks. This is a significant result and is comparable to the weight loss seen with the injectable version of the drug (Wegovy).
UBT251
– Pills or Injectable? Injectable
– Stage? Phase II Trials
– What do we know about efficacy: In a completed Phase Ib trial, participants receiving the highest dose of UBT251 achieved an average weight reduction of 15.1% after 12 weeks. This is a very rapid and promising result compared to other drugs in the same class. UBT251 is a “triple-agonist” drug, targeting the GLP-1, GIP, and glucagon receptors, which is a mechanism of action shared with other experimental drugs like retatrutide.
Amgen
Maritide
– Pills or Injectable? Injectable
– Stage? Phase III Trials
– What do we know about efficacy: Maritide, also known as maridebart cafraglutide, is an injectable medication, with a key differentiator being its potential for less frequent dosing, with some trials exploring a once-monthly schedule. In Phase II studies, Maritide showed significant weight loss, with participants on the highest dose losing an average of approximately 20% of their body weight over 52 weeks. The trial also indicated that weight loss had not yet plateaued by the end of the study, suggesting the potential for further reduction.
Boehringer Ingelheim
Survodutide
– Pills or Injectable? Injectable
– Stage? Phase III Trials
– What do we know about efficacy: In Phase II trials, survodutide showed significant weight loss, with participants on the highest dose achieving an average weight reduction of nearly 19% after 46 weeks. In some cases, up to 40% of participants on the highest doses achieved a weight loss of at least 20%. The studies also indicated that weight loss had not yet plateaued, suggesting the potential for further reduction with longer treatment.
Roche
CT-388
– Pills or Injectable? Injectable
– Stage? Phase II Trials
– What do we know about efficacy: In a Phase I clinical trial, participants treated with CT-388 achieved a significant placebo-adjusted weight loss of 18.8% over 24 weeks. The data also showed that a high percentage of participants achieved notable weight loss milestones, with 45% losing over 20% of their body weight.
Structure Therapeutics
GSBR-1290
– Pills or Injectable? Pills
– Stage? Phase II Trials
– What do we know about efficacy: Based on data from its Phase IIa and a separate capsule-to-tablet pharmacokinetic (PK) study, GSBR-1290 has shown positive efficacy for weight loss. In the 12-week Phase IIa study, participants had a placebo-adjusted mean weight loss of 6.2%. A separate PK study with a new tablet formulation showed a weight loss of up to 6.9% at 12 weeks.
Viking Therapeutics
VK2735
– Pills or Injectable? Both
– Stage? Phase II Trials
– What do we know about efficacy: In a 13-week Phase II trial for the injectable version, participants on the highest dose achieved a mean weight reduction of up to 14.7% from baseline. In a Phase I trial for the oral version, participants saw a mean weight loss of up to 8.2% after just 28 days of dosing.
The Bottom Line from Your Countess
The world of GLP-1 medications is evolving at a lightning-fast pace. And not all medications that go through trials make their way to market. We’ll continue to update the status and regularly post GLP-1 News in our Free Weight Loss Encouragement Group as well as on my YouTube Channel.
What’s on the market today is just the beginning. The key takeaway for all of us is to stay informed, talk to our doctors about our personal health goals, and remember that these medications are a tool, not a magic bullet. They work best when combined with healthy lifestyle changes, just like a fabulous outfit is always enhanced by a great pair of shoes.
Stay fabulous, and as always, happy shopping for a healthier you!
Disclaimers: Friends, I am not a medical professional, nor do I pretend to be one on the internet. This information is for educational purposes only, gathered from trusted sources and my personal experiences. Always consult with your healthcare provider before making any changes to your medication or lifestyle. This post has links included that are affiliate links. Countess of Shopping & her furbabies will be compensated when you make a purchase by clicking through the links at no cost to you.
