When considering semaglutide (GLP-1 agonist), tirzepatide (GLP-1/GIP dual agonist), and retatrutide (GLP-1/GIP/glucagon triple agonist), contraindications can be grouped into several practical categories. ABSOLUTE contraindications are situations where the drug should not be used because the risk clearly outweighs any benefit; for all three incretin-based agents this includes a personal or family history of medullary thyroid carcinoma or MEN2, prior serious hypersensitivity to the drug, and generally pregnancy. RELATIVE contraindications are conditions where use may be possible but requires caution and close monitoring, such as severe gastrointestinal disease (e.g., gastroparesis), history of pancreatitis, gallbladder disease, advanced frailty, or high risk of dehydration; these concerns tend to be mildest with semaglutide, more notable with tirzepatide, and potentially greater with retatrutide because its added glucagon activity increases metabolic stress. TEMPORARY contraindications are short-term reasons to hold therapy, such as acute severe nausea/vomiting, dehydration, acute pancreatitis workup, or before major surgery where slowed gastric emptying could increase aspiration risk. PERMANENT contraindications include MEN2, medullary thyroid carcinoma, or a proven severe allergic reaction to the medication. DIRECT contraindications are problems caused by the drug’s own mechanisms, such as worsening gastroparesis, severe GI intolerance, or recurrent pancreatitis, while INDIRECT contraindications arise from downstream effects like volume depletion, electrolyte imbalance, or excessive lean mass loss if nutrition is poor. DISEASE-DRUG contraindications include conditions like severe gastroparesis, certain endocrine tumor syndromes, or unstable pancreatitis history, and procedural contraindications mainly involve holding these agents before anesthesia or endoscopy due to delayed gastric emptying. So, semaglutideis usually the most conservative and predictable option, tirzepatide offers greater metabolic effect with similar but sometimes stronger GI risks, and retatrutide is the most potent and potentially most stressful metabolically, so it demands the greatest caution, slow titration, and careful patient selection. If you are not sure where you are in the scheme of your own therapy, consult your PCP to go over potential contraindications before you start your RS journey. The more you know.

by Jonquilyn Hill and Kelli Wessinger Feb 16, 2026, 6:30 AM EST If you watched the Super Bowl, you might have noticed that a lot of the ads were for weight-loss drugs. Even Serena Williams was selling them. That’s because demand for GLP-1s has skyrocketed over the last year, with users more than doubling from 2024. GLP-1s are relatively new and the industry is rapidly expanding, so we’re still learning more about their long-term effects. Users report fatigue and nausea as being quite common during use. But with more people using the drug, more side effects are popping up. Dr. Sera Lavelle is a clinical psychologist who noticed several of her patients reporting a strange GLP-1 side effect: extreme apathy. She told Today, Explained co-host Jonquilyn Hill that it isn’t quite depression, but more of a “missing spark,” making people lose interest in things they previously loved. Below is an excerpt of their conversation, edited for length and clarity. There’s much more in the full episode, so listen to Today, Explained wherever you get podcasts, including Apple Podcasts, Pandora, and Spotify. When did you first start noticing people having a psychological reaction to GLP-1s? I first started looking into this about a year ago. It was kind of the same conversation with three different patients in the same week, and I started noticing they all had this flat affect. None of them were depressed, but each was saying things like, “Well, what’s the point?” “Maybe I don’t even care about that job promotion.” “I don’t know what it is, but I’m not even excited to go out with my friends.” And these three in particular had been on GLP-1s. And of course, you can’t make an inference based on three people, but it is what motivated me to start looking into more of the psychological effects, particularly around what we do and do not know about how GLP-1s affect dopamine and motivation-seeking behavior. The other thing is that there’s a big difference between a person being depressed [versus the GLP-1 side effects], which they have started looking into. Does it affect suicidality and depression? You have to think about depression like, yes, it can be that kind of apathy feeling. However, depression really implies a negative affect: Like, I’m no good, I don’t feel like existing, right? That’s very different than a flatness.

Medications (Peptides) like TRZ, Sema, and RTA work by strongly slowing stomach emptying, reducing appetite, and changing how the brain and gut communicate about hunger and fullness. When these drugs are started at too high of a dose or when someone is especially sensitive, the effects can become too strong too fast. This often shows up as severe nausea, vomiting, diarrhea, abdominal cramping, weakness, shaking, and profound fatigue. In simple terms, the stomach and intestines can become over-slowed and overstimulated at the same time, making it hard to keep food or fluids down and leaving people feeling miserable. While nausea and GI upset are known side effects, severe or persistent symptoms usually mean the dose exceeded what the body can tolerate at that moment, rather than just normal adjustment. Most of the time this is not dangerous by itself, but it can become risky if dehydration or electrolyte imbalance develops. Warning signs that need medical attention include not being able to keep fluids down, very dark or minimal urine, dizziness or lightheadedness, severe or worsening abdominal pain, or ongoing vomiting. The good news is that for most people symptoms improve as the medication level slowly falls over several days. Many individuals can still use these medications successfully later if they restart at a much lower dose and increase more slowly. During an acute reaction, the priorities are hydration first—taking small, frequent sips of water or electrolytes, eating bland foods only if tolerated, avoiding fatty, heavy, or spicy meals, resting, and using anti-nausea medication if prescribed or available. The focus should be on preventing dehydration, not forcing calories. Prevention is key. The safest approach with GLP-1 receptor agonists is to start low and go slow, increase doses only after symptoms are well controlled, avoid stacking similar drugs, and respect individual sensitivity. Rapid dose escalation or starting too high is the most common reason people experience severe side effects.

So I’m a chronic headache/migraine suffer. I was wondering if there was a peptide that would help with these headaches. I have been doctors, specialists, had imaging done, see chiropractors, had massages and been on several medicines. TIA

500mcg bottles. 100 small tablets. Minimal fillers. $135 Labeled wrong. Can't be sold on the vendor site as labeled.