Weight Loss and GLP-1 Medications

What is semaglutide?

Semaglutide is a GLP-1 receptor agonist — a medication that engages the same appetite and blood-sugar signaling system the gut already uses after a meal. It is prescribed for weight management as part of a monitored plan alongside nutrition and strength work, not as a product that works on its own. The semaglutide prescribed through ACT 2 Health is prepared by a licensed compounding pharmacy; it is not an FDA-approved product, and it is not the same as, equivalent to, or interchangeable with any branded medication.

Semaglutide injection

What is tirzepatide?

Tirzepatide is a dual receptor agonist that acts on two gut-hormone pathways, GLP-1 and GIP, rather than one. It is prescribed for weight management within a monitored plan, as either a weekly injection or a daily capsule. The tirzepatide prescribed through ACT 2 Health is prepared by a licensed compounding pharmacy; it is not an FDA-approved product, and it is not the same as, equivalent to, or interchangeable with any branded medication.

Tirzepatide injection

What is the difference between semaglutide and tirzepatide?

Semaglutide acts on the GLP-1 pathway; tirzepatide acts on GLP-1 and GIP, a second gut hormone involved in insulin response and in how the body handles energy and fat storage. Semaglutide has the longer clinical record and the cardiovascular and liver indications that came with it; tirzepatide is the newer molecule and carries the obstructive sleep apnea indication. Which one suits you is a clinical decision made with your provider, and ACT 2 Health publishes no comparative outcome figures for compounded medications.

Medical weight loss

Is tirzepatide better than semaglutide?

Neither medication is better as a general matter, and ACT 2 Health does not publish comparative outcome claims for compounded medications. The two act on different numbers of receptor pathways, and individual response varies more than the difference between the molecules does. Your provider chooses with you, based on your history, your metabolic picture and how you actually respond.

Is compounded semaglutide the same as Wegovy?

Compounded semaglutide is not the same as Wegovy. The active molecule is chemically the same, but the formulation, the testing that stands behind it, the device it arrives in and its regulatory status are all different: compounded medications are not FDA-approved, are not reviewed by the FDA for safety or effectiveness, and are not equivalent to or interchangeable with any branded product. How much confidence a compounded preparation deserves depends entirely on the pharmacy that made it.

Compounded semaglutide vs Wegovy

Is compounded tirzepatide the same as Zepbound?

Compounded tirzepatide is not the same as Zepbound. Zepbound and Mounjaro are the same FDA-approved tirzepatide under two labels, made under a process the FDA has inspected; a compounded preparation is made by a pharmacy against an individual prescription and has never been reviewed by the FDA for safety or effectiveness. Compounded medications are not equivalent to or interchangeable with any branded product.

Compounded tirzepatide vs Zepbound and Mounjaro

Is there a generic version of semaglutide?

There is no generic semaglutide. A generic is an FDA-approved copy of an approved drug, held to equivalence standards the FDA has reviewed, and none exists for semaglutide. Compounded semaglutide is sometimes described online as a generic; that description is wrong, because a compounded preparation is not FDA-approved and is not equivalent to or interchangeable with any branded product.

Compounded semaglutide vs Wegovy

Why is compounded semaglutide cheaper than the branded product?

Compounded semaglutide costs less because no research, trial, approval or branded-device costs are built into it. That is the whole of the difference — it is not evidence that the ingredient is inferior, and it is not a guarantee that the preparation is equivalent to the approved drug either. Compounded medications are not FDA-approved and are not equivalent to or interchangeable with any branded product.

Compounded semaglutide vs Wegovy

Is compounded semaglutide legal in 2026?

Patient-specific compounding of semaglutide by a 503A pharmacy remains lawful in 2026 where there is a clinical reason the approved product does not fit. The shortage that allowed copies to be compounded at scale has ended, and with it the enforcement discretion that came with it; the FDA has separately proposed excluding semaglutide from the 503B bulk-substances list. That is a much narrower lane than the one the telehealth industry grew up in, and any provider prescribing compounded semaglutide owes you an account of how their prescription fits inside it.

Compounded semaglutide vs Wegovy

Do the Wegovy and Zepbound trial results apply to compounded semaglutide and tirzepatide?

No — and ACT 2 Health does not quote branded trial figures on its compounded product pages for that reason. Results vary. Clinical trial results apply only to the FDA-approved branded medication specifically identified and do not apply to compounded medications. All medications must be prescribed by a licensed provider based on medical necessity.

Compounded semaglutide vs Wegovy

Is oral semaglutide as effective as the injection?

Oral semaglutide delivers the same molecule, but absorption by the oral route is lower and varies more between people, which makes the injection the more predictable delivery. In the OASIS trials of the FDA-approved oral tablet, weight loss came close to the injection's — results that belong to that branded tablet and do not apply to a compounded capsule, which has never been through a trial of its own. In practice the route you will stay consistent with often matters more than the difference on paper.

The OASIS trials, plainly

Why does oral semaglutide have to be taken on an empty stomach?

Oral semaglutide has to be taken on an empty stomach because semaglutide is a peptide and the digestive system is built to break peptides down. The approved tablet pairs it with an absorption enhancer that protects it only briefly, and food or other liquids defeat that protection. This is why how consistently an oral GLP-1 is taken affects how much of it actually reaches you.

Oral semaglutide capsules

Should I choose the GLP-1 injection or the capsule?

Choose the route you will actually keep to — consistency affects the result more than the difference between the routes does. The weekly injection is the more predictable delivery; the daily capsule suits people for whom needles are a genuine obstacle rather than a mild dislike. Your clinician decides with you, and moving from one route to the other later is a normal clinical decision rather than a failure.

Medical weight loss

How long does it take to see results on a GLP-1?

Appetite usually changes within the first few weeks on a GLP-1, and weight change follows over months rather than weeks. The early period is mostly about tolerance, because GLP-1 medications are started gently and increased in steps under clinical guidance. Individual response varies, and ACT 2 Health does not publish an expected rate of loss.

Medical weight loss

How much weight will I lose on a GLP-1?

ACT 2 Health does not publish an expected amount of weight loss, and a provider who promises you a number is guessing. Individual response varies widely, and the published trial figures belong to the FDA-approved branded medications those trials studied rather than to compounded preparations. What your clinician can do is track your response over time — on body composition and biomarkers rather than the scale alone — and adjust the plan around what actually happens.

How is my GLP-1 regimen decided?

Your GLP-1 regimen is a clinical decision made by your provider from your history, your labs and your response, and it is reviewed and adjusted over time. GLP-1 medications are begun at a starting point and increased in steps, with the pace set by how you are tolerating them rather than by a calendar. ACT 2 Health publishes no amounts or schedules, because they are individual and are never something to arrange yourself.

How it works

Why do GLP-1 medications start gently and increase over time?

GLP-1 medications are increased in steps because the gastrointestinal side effects — nausea above all — are far more manageable when the body is given time to adapt. Moving up too quickly is the commonest reason people abandon a treatment that would otherwise have suited them. The pace is set by your clinician against your tolerance, and it is not something to accelerate on your own.

Why has my weight loss stalled on a GLP-1?

A stall on a GLP-1 usually has a findable cause rather than meaning the medication has stopped working. Common ones are protein and resistance training slipping, sleep that has deteriorated, alcohol, an evening eating pattern, and the plain arithmetic that a lighter body needs less energy. Tell your clinician rather than changing anything yourself — a stall is a reason to review the plan, and a short period of glucose monitoring sometimes shows what a food diary cannot.

Using a CGM on a GLP-1

What are the most common side effects of GLP-1 medications?

The most common side effects of GLP-1 medications are gastrointestinal: nausea above all, along with constipation, diarrhea, reflux and a general sense of digestion having slowed. They are usually worst early and after each step up, and often ease as the body adapts. Contact your clinician promptly for severe abdominal pain, persistent vomiting, or any neck lump, difficulty swallowing or persistent hoarseness.

Safety and side effects

Why does semaglutide make me feel nauseous?

Semaglutide slows the rate at which the stomach empties, which is part of how it produces fullness and also the main reason for nausea. Nausea is usually worst in the first weeks and after each increase, and it eases for most people as the body adapts. Tell your clinician if it does not — unaddressed nausea is the commonest reason people stop treatment, and it is a problem with known clinical solutions rather than something to endure.

Do GLP-1 side effects go away?

GLP-1 side effects commonly ease over time, particularly the gastrointestinal ones, which are usually at their worst early and after each step up. That is not universal: some people remain intolerant, and that is a legitimate reason to change course rather than a failure of willpower. Report what you are experiencing to your clinician instead of waiting it out alone.

Do GLP-1 medications cause thyroid cancer?

GLP-1 medications carry a boxed warning about thyroid C-cell tumors, which were observed in rodents; whether the same risk applies in humans has not been established. Because of that warning they are not prescribed to anyone with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2. Tell your clinician about any thyroid history in your family, and report any neck lump, difficulty swallowing or persistent hoarseness promptly.

Can I take a GLP-1 if I have had pancreatitis?

A history of pancreatitis does not automatically rule out a GLP-1, but it calls for careful evaluation and is a decision for your clinician rather than a box to tick on an intake form. Pancreatitis is an uncommon but recognized concern with this class of medication. Severe, persistent abdominal pain — particularly pain that bores through to the back — is a reason to stop and seek medical attention promptly.

Will I lose muscle on a GLP-1?

Some lean mass is lost with any significant weight loss, on a GLP-1 or otherwise, and after 45 it matters more and returns more slowly than it would have at 30. ACT 2 Health's protocols emphasize protein, resistance training and body-composition tracking rather than scale weight for exactly that reason. Individual results vary.

Medical weight loss

Why does protein matter so much on a GLP-1?

Protein matters on a GLP-1 because appetite suppression makes it easy to eat far less of everything, and protein is the thing you can least afford to cut while losing weight. Adequate protein alongside resistance training is what gives the body a reason to keep lean mass rather than spend it. Your clinician sets a target that fits you; the principle is that intake should not drift down with your appetite.

Medical weight loss

Do I need to lift weights while taking a GLP-1?

Resistance training is the most useful thing you can add to a GLP-1 plan after 45, because it is what protects the lean mass that weight loss otherwise puts at risk. It does not have to be a gym program — progressive, loaded work a few times a week is the shape of it. If you have not trained in years, ask your clinician what is appropriate for you before you start.

Medical weight loss

What happens when I stop taking a GLP-1?

Appetite returns when a GLP-1 is stopped, generally within weeks, because the medication acts while it is present rather than resetting appetite permanently. Metabolic improvements such as better blood-sugar handling also begin to reverse, and weight tends to return without something in place to replace what the medication was doing. Stopping is a clinical decision to plan for with your provider rather than something to do abruptly on your own.

Medical weight loss

Will I regain the weight if I stop semaglutide?

Regain after stopping semaglutide is common, and we would rather say so plainly: appetite returns once the medication clears, and in the trials of the branded product weight returned after discontinuation. What changes the trajectory is what is in place by then — muscle you have kept, habits that have become routine, sleep and alcohol under control, and a clinician still watching your markers. Whether you taper, stop or continue is decided with your provider from your own data.

Medical weight loss

Will I be on a GLP-1 for life?

Not necessarily. Obesity behaves as a chronic condition, so for some people ongoing treatment is the right answer — but plans are reviewed over time, and some members taper as body composition, biomarkers and habits improve. That is a decision made with your clinician on your data, and not one to settle before you have any.

Who should not take a GLP-1?

GLP-1 medications are not prescribed to anyone with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2, anyone pregnant, breastfeeding or trying to conceive, or anyone with a history of pancreatitis without careful evaluation. Active gastrointestinal disease, gallbladder disease, significant kidney impairment and certain eating-disorder histories also call for caution. GLP-1 medications are not suitable for everyone, and eligibility is determined by a licensed clinician from your full history — which is why disclosing all of it matters.

Safety and side effects

Do I need a certain BMI to qualify for a GLP-1?

There is no blanket BMI cutoff for a GLP-1 at ACT 2 Health. Eligibility is assessed case by case on your symptoms, metabolic picture and history — which matters after 45, where weight change is often entangled with hormones, sleep and thyroid function. A licensed clinician makes that determination, and medications are prescribed only when medically necessary.

Lab testing and diagnostics

Are GLP-1 medications safe after 60?

GLP-1 medications are prescribed after 60 with closer monitoring rather than avoided. A 2026 pooled analysis of semaglutide trials in adults 65 and over found weight loss comparable to younger adults, with serious adverse events more frequent than on placebo — findings that belong to the FDA-approved branded medication those trials studied and not to compounded preparations. What changes in the plan at this age is the emphasis: lean mass, bone density, and a review of blood-pressure and diabetes medications that may need adjusting as weight comes off.

Semaglutide after 60

Do GLP-1 medications interact with my other medications?

GLP-1 medications slow stomach emptying, which changes how quickly other oral medications are absorbed — including oral contraceptives, where additional precautions are sometimes advised. Taken alongside insulin or a sulfonylurea they raise the risk of low blood sugar, and blood-pressure medication often needs review by whoever prescribes it as weight comes off. Give your clinician your complete list, supplements included, and never combine two GLP-1 medications.

What is food noise, and do GLP-1 medications quiet it?

Food noise is the running mental loop about food — planning it, anticipating it, negotiating with yourself about it — that fills the space between meals, and quieting it is what most people on a GLP-1 describe first. It is not the same thing as appetite: people report the thinking about food receding rather than a surge of willpower arriving. It usually returns when the medication stops, which is part of why what you build during treatment matters.

Medical weight loss

Can I drink alcohol on a GLP-1?

There is no prohibition on alcohol with a GLP-1, but it commonly affects people differently: the stomach empties more slowly, there is usually less food in it, and the medication's own gastrointestinal effects overlap with the drink's. Low blood sugar is a real risk if you also take insulin or a sulfonylurea. Many people find their interest in alcohol falls without trying — that evidence is early, and GLP-1 medications are not an approved treatment for alcohol use disorder and are not prescribed here for that purpose.

Semaglutide and alcohol

Is metformin a weight-loss drug?

Metformin is not a weight-loss drug. It works mainly on insulin sensitivity and blood-sugar regulation, and any weight effect is modest next to a GLP-1 — in weight care it is used as an adjunct, or where insulin resistance rather than weight is the problem being treated. Metformin is an FDA-approved medication dispensed as manufactured, which sets it apart from the compounded GLP-1 preparations in the same catalog.

Metformin

Can I take metformin and a GLP-1 together?

Metformin and a GLP-1 are commonly prescribed together, and the combination is routine rather than unusual. They work through different mechanisms — insulin sensitivity on one side, appetite and blood-sugar signaling on the other. Whether both are appropriate for you is determined by your clinician from your labs and history.

Metformin

Can I take a GLP-1 and hormone therapy at the same time?

GLP-1 medications and hormone therapy are frequently used together, and for many women in the menopause transition treating both is the more complete approach. They address different drivers — appetite and metabolic signaling on one side, estrogen loss on the other — and addressing only one often disappoints. At ACT 2 Health both are reviewed together as one plan rather than run as two unrelated prescriptions.

Hormone questions for women

Does a GLP-1 change how my hormone therapy works?

A GLP-1 can change how oral hormone therapy is absorbed, because slowed stomach emptying affects anything taken by mouth; transdermal routes such as a patch or gel bypass the stomach entirely. Weight loss itself also shifts the hormonal picture, since fat tissue produces estrogen — some women notice their symptoms change as weight comes off. Tell whoever prescribes your hormone therapy that you are starting a GLP-1, and expect the plan to be reviewed rather than left alone.

Hormone therapy on a GLP-1

My insurance covers Wegovy or Zepbound — do I still need ACT 2 Health?

If your plan covers a branded GLP-1, fill it through your plan: it is almost always cheaper than any cash route, and ACT 2 Health does not try to compete with a pharmacy benefit. What the Weight Loss Program Membership adds in that situation is the clinical care around the drug rather than the drug itself — baseline labs, monitoring, plan review, and body-composition tracking, which is the part a pharmacy benefit does not provide. The medication-inclusive semaglutide and tirzepatide options exist for people whose plans cover nothing.

Weight Loss Program Membership

Results vary. Clinical trial results apply only to the FDA-approved branded medication specifically identified and do not apply to compounded medications. All medications must be prescribed by a licensed provider based on medical necessity.