This question deserves the label, not a headline. Below is what semaglutide's FDA labeling actually warns about, who should not take it, and what the difference is between a supervised prescription and a vial bought online. No scare stories, no sales pitch.
Semaglutide is an FDA-approved medication with a well-documented safety profile when it is prescribed by a licensed provider to an appropriate candidate and monitored over time. It is not appropriate for everyone. The biggest avoidable risk is taking it without medical screening, or getting it from an unregulated source.
Most people who stop semaglutide stop because of their stomach. The common effects are gastrointestinal: nausea, vomiting, diarrhea, constipation, and abdominal discomfort. They usually show up early, follow dose increases, and ease as your body adapts.
This is why titration matters so much. Semaglutide is designed to be started low and increased slowly, and the providers who cause the most misery are the ones racing patients up the dose ladder. If nausea is running your week, that is information, and the answer is usually to hold or step back a dose rather than push through it. Tell your provider. If a program has no easy way for you to do that, it is not a program.
These are the items that belong in a real conversation before a first injection, not after.
Semaglutide carries an FDA boxed warning, and it is the part of the label most often either ignored or exaggerated.
In rodent studies, semaglutide caused thyroid C-cell tumors at clinically relevant exposures, with the increase depending on both dose and length of treatment. It is not known whether semaglutide causes these tumors, including medullary thyroid carcinoma, in humans, because the human relevance of the rodent finding has not been determined.
That unknown is why the contraindication is written the way it is. Semaglutide is contraindicated in anyone with a personal or family history of medullary thyroid carcinoma, or with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). If that is your history, this medication is off the table, and a provider who does not ask you about it has skipped a required step. For people without those risk factors, the labeling does not call for routine thyroid ultrasound or calcitonin screening.
Neither the alarming version nor the dismissive version of this warning is honest. The finding is from animals, the human relevance is undetermined, and the contraindication that follows from it is specific and absolute. All three of those things are true at once.
This list is a starting point for a conversation, not a substitute for one. Your history may include something not listed here that changes the answer entirely, which is the whole reason the screening exists.
Not every "semaglutide" is the same thing, and the distinction is worth understanding before you buy anything.
A compounded preparation is not the FDA-approved product. Compounding is a real, regulated activity performed by licensed pharmacies for documented patient-specific needs, with a licensed prescriber behind it. Federal rules on compounding these particular medications tightened after the GLP-1 shortages were declared resolved, and the FDA has continued enforcement against sellers operating outside those rules.
Separately, there is a market of research-chemical websites and offshore sellers shipping vials with no exam, no labs, and nobody accountable. The FDA has documented dosing errors and counterfeit supply from that channel. If a source does not require a prescriber, it is not a pharmacy, and no amount of website polish changes that.
Our position, from our medical director down: we work within current FDA rules and source through professional compounding pharmacies. When the rules change, we change with them, even when that means telling a patient no.
You can judge any weight loss program, ours included, against this list.
Thyroid history, family history, pancreatic and gallbladder history, medications, pregnancy plans. Asked out loud, by a person.
Metabolic markers, thyroid, kidney function. A program that prescribes without bloodwork is a store.
Florida regulates medical spas as medical clinics, and we see you before we prescribe.
Start low, increase on a schedule your body tolerates, with a clear way to reach us when it does not.
Repeat labs, symptom review, and a real answer to "what if this stops working."
That is how our medical weight loss program is built. If you are weighing this medication against another in the same class, our guide to semaglutide vs tirzepatide covers how that choice gets made. Results vary from person to person, and if semaglutide is not appropriate for you, we will tell you and explain what we would consider instead.
It is an FDA-approved medication with a well-documented safety profile when prescribed by a licensed provider to an appropriate candidate and monitored over time. It is not appropriate for everyone, and its label carries specific contraindications. The largest avoidable risk is taking it without medical screening, or obtaining it from an unregulated source.
In rodent studies, semaglutide caused thyroid C-cell tumors at clinically relevant exposures, with the increase depending on dose and duration. It is not known whether it causes these tumors, including medullary thyroid carcinoma, in humans, because the human relevance of the rodent finding has not been determined. Because of that finding, the medication is contraindicated in anyone with a personal or family history of medullary thyroid carcinoma or MEN 2.
Anyone with a personal or family history of medullary thyroid carcinoma or MEN 2, anyone with a known serious hypersensitivity to semaglutide, and anyone pregnant or planning pregnancy. It also calls for individual review if you have a history of pancreatitis, gallbladder disease, kidney impairment, an eating disorder, or you take insulin or other medications that lower blood sugar. We screen for all of this before prescribing.
The common ones are gastrointestinal, and they typically appear early, track with dose increases, and ease as your body adapts. Slow titration and dose adjustment are the usual fix. Serious reactions are uncommon but real, so symptoms like severe persistent abdominal pain should go to your provider promptly rather than being waited out.
It depends entirely on the source. A compounded preparation is not the FDA-approved product, and federal rules on compounding these medications tightened after the shortages were declared resolved. Compounding through a licensed pharmacy for a documented patient-specific need is a regulated activity with accountability behind it. Research-chemical sites selling semaglutide without an exam are not, and the FDA has documented dosing errors and counterfeit supply from that market.
Beach Glo is physician-owned, with Dr. Kalnoky, MD on site and a family medicine practice next door for ten years. His Florida license is public record, and we link to it.
Screening, labs, an in-person exam, and titration you can actually tolerate.
Learn more →Two mechanisms, one head-to-head trial, and how the choice is actually made.
Read the guide →How we source, screen, and supervise, written down so you can hold us to it.
Learn more →Online booking takes about a minute, and your appointment is confirmed on the spot.