Weight Loss and GLP-1 Medications

What is semaglutide?

Semaglutide is a GLP-1 receptor agonist that works with the gut's own appetite and blood-sugar signaling, prescribed for weight management within a monitored plan. The version prescribed through ACT 2 Health is compounded, not FDA-approved, and not equivalent to or interchangeable with any branded medication; the treatment page covers it in full.

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 alone, while tirzepatide acts on GLP-1 and a second gut hormone, GIP. Which suits you is a clinical decision, and the side-by-side comparison sets out the differences.

Semaglutide vs tirzepatide

Is tirzepatide better than semaglutide?

Neither is better as a general matter, and ACT 2 Health publishes no comparative outcome claims for compounded medications; your provider chooses with you based on your history and response. See the side-by-side comparison.

Semaglutide vs tirzepatide

Is compounded semaglutide the same as Wegovy?

Compounded semaglutide is not the same as Wegovy: the molecule matches, but the formulation, testing, device and regulatory status differ, and compounded medications are not FDA-approved or equivalent to or interchangeable with any branded product. The compounding comparison explains the difference.

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 in the US, and compounded semaglutide is not a generic, because it is not FDA-approved and is not equivalent to or interchangeable with any branded product. Ozempic, Wegovy and Rybelsus explained covers the naming.

Ozempic, Wegovy and Rybelsus explained

Why are compounded GLP-1 medications cheaper than branded ones?

Compounded GLP-1 medications cost less because no research, trial, approval or branded-device costs are built into them, which is neither evidence of an inferior ingredient nor a guarantee of equivalence to the approved drug. The cost page sets out what you pay and why.

Semaglutide cost

Is compounded semaglutide legal in 2026?

Patient-specific compounding by a 503A pharmacy remains lawful in 2026 where there is a clinical reason the approved product does not fit, a much narrower lane now that the shortage has ended. The compounding comparison covers what that means for a prescription.

Compounded semaglutide vs Wegovy

Do branded GLP-1 trial results apply to compounded versions?

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 an oral GLP-1 as effective as the injection?

The oral route delivers the same molecule, but absorption is lower and more variable, so the injection is the more predictable delivery and the branded tablet's trial results do not apply to a compounded capsule. The oral vs injectable comparison compares the two.

Oral vs injectable semaglutide

Why do peptide GLP-1 pills have to be taken on an empty stomach?

A peptide GLP-1 is broken down by digestion, and the absorption enhancer that protects it works only briefly, so food or other liquids defeat it. The oral vs injectable comparison explains why consistency matters with the oral route.

Oral vs injectable semaglutide

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?

Results on a GLP-1 take time to see: appetite usually changes within the first few weeks, 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 how much weight you will lose on a GLP-1, 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 do GLP-1s cause nausea?

GLP-1 medications slow how quickly the stomach empties, which is part of how they produce fullness and the main reason for nausea; it is usually worst early on and eases for most people, and it is worth telling your clinician if it does not. The side-effects guide covers what helps.

Semaglutide side effects

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?

Yes — you can lose some muscle on a GLP-1, since some lean mass is lost with any significant weight loss, on a GLP-1 or otherwise. 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?

When you stop taking a GLP-1, appetite returns, 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 be on a GLP-1 for life?

Not necessarily — being on a GLP-1 for life is not automatic, though obesity behaves as a chronic condition and for some people ongoing treatment is the right answer. Plans are reviewed over time, and some members step down or stop as body composition, biomarkers and habits improve, always with their clinician. 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 a branded GLP-1 — do I still need ACT 2 Health?

If your plan covers a branded GLP-1, fill it through your plan, which is almost always cheaper than any cash route; the Weight Loss Program Membership adds the clinical care around the drug, from baseline labs to monitoring and body-composition tracking.

Weight Loss Program Membership

Does semaglutide reduce the risk of heart attack and stroke?

In the SELECT trial of the branded product, in adults with established cardiovascular disease and overweight or obesity, semaglutide reduced the risk of major cardiovascular events, a finding now carried on the Wegovy label. The SELECT trial page covers what was tested. 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.

Semaglutide and the SELECT trial

Is semaglutide approved for fatty liver?

Wegovy was approved in 2025 for adults with noncirrhotic MASH with moderate to advanced fibrosis, not for simple fatty liver without inflammation, and telling the two apart takes staging rather than a liver enzyme result. The fatty liver page explains the staging. 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.

Semaglutide and fatty liver

Is tirzepatide approved for sleep apnea?

Zepbound was approved by the FDA in December 2024 for moderate to severe obstructive sleep apnea in adults with obesity, and it remains the only medication carrying that indication. In the SURMOUNT-OSA trial the apnea-hypopnea index fell markedly over a year, with a substantial share of participants ending with mild or no obstructive sleep apnea. ACT 2 Health prescribes on a diagnosis rather than a suspicion, so a sleep study comes first. 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.

Tirzepatide and sleep apnea

Can I stop using my CPAP if I start tirzepatide?

Not on your own, and not at the start. The airway improves as weight comes off over months rather than in the first weeks, so stopping CPAP early means returning to untreated apnea while the medication is still being established. Any change to CPAP is a decision for the sleep physician who prescribed it, made on a repeat sleep study rather than on how you feel.

Tirzepatide and sleep apnea

Does tirzepatide prevent type 2 diabetes?

In SURMOUNT-1, adults with prediabetes and obesity taking tirzepatide were far less likely to progress to type 2 diabetes over three years than those on placebo — among the largest risk reductions reported for any preventive intervention in this area. That protection receded after the medication was stopped, alongside returning weight, which is the part that tends to go unmentioned. 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.

Tirzepatide and prediabetes

Does metformin prevent type 2 diabetes?

Metformin reduced progression from prediabetes to type 2 diabetes in the Diabetes Prevention Program, and the effect was still detectable at fifteen-year follow-up, though weaker than at three years. Structured lifestyle intervention outperformed metformin in the same trial, which is worth knowing before either is chosen. The benefit was clearest in people under 60, those carrying more weight, and women with a history of gestational diabetes.

Metformin for prediabetes

What is the difference between metformin ER and immediate-release metformin?

Metformin ER and immediate-release metformin are the same medication released at different speeds: the immediate-release form dissolves quickly and is usually taken more than once a day, where the extended-release form dissolves over hours and is usually taken once. Effects on glucose and insulin are equivalent between them, and the practical difference is tolerability — the extended-release form is generally easier on the gut. Which form you are prescribed is a clinical decision rather than a matter of strength.

Metformin ER vs immediate-release

Why is there a whole metformin tablet in my stool?

Some extended-release metformin formulations use a shell that stays intact while the medication diffuses out of it, so what appears in the stool is an emptied shell rather than an unabsorbed tablet. This is expected and does not mean the medication was wasted. Mention it at a review if it is new to you, but it is not a reason to change anything on your own.

Metformin ER vs immediate-release

Can I cut an extended-release metformin tablet in half?

No — an extended-release metformin tablet should not be cut in half, because splitting or crushing it destroys the structure that releases the medication slowly. That turns a once-daily form into an immediate release all at once — which is both less tolerable and not what was prescribed. If swallowing the tablet is the difficulty, tell your clinician, because the immediate-release form exists and is a legitimate alternative.

Metformin ER vs immediate-release

Does metformin help with perimenopause weight gain?

Metformin helps modestly, and only where insulin resistance is genuinely driving the weight change — it treats the insulin resistance that makes weight in the menopause transition harder to shift, rather than acting as a weight-loss medication. GLP-1 medications produce considerably more weight loss than metformin does. Metformin and hormone therapy are commonly prescribed together, since they address different drivers and do not interact.

Metformin in perimenopause

Does metformin affect vitamin B12?

Long-term metformin use is associated with reduced B12 absorption, and periodic B12 monitoring is a recognized part of metformin care rather than an optional extra. Low B12 causes fatigue and, over time, nerve symptoms such as tingling in the feet — symptoms easily attributed to something else if nobody is checking. Oral supplementation usually corrects it once it has been identified.

Metformin

Does tirzepatide raise testosterone?

In men with obesity and low testosterone, testosterone commonly rises on tirzepatide — through weight loss and improved insulin sensitivity rather than through any direct hormonal action. Where low testosterone is metabolically driven, treating the metabolism first is the more honest sequence, because testosterone therapy treats the number and leaves the cause in place. The effect tracks the metabolic state, so testosterone tends to fall again if the weight returns.

Tirzepatide and testosterone

Can I take an oral GLP-1 with levothyroxine?

Yes, with thyroid monitoring: slower stomach emptying can raise how much levothyroxine is absorbed, so tell whoever prescribes your thyroid medication and report palpitations, tremor or new insomnia. The thyroid medication page covers the interaction.

Oral semaglutide and thyroid medication

What is orforglipron?

Orforglipron is an oral GLP-1 medication that is not a peptide, which is why it can be taken with food and water while semaglutide tablets — peptides that need an absorption enhancer and an empty stomach to survive digestion — cannot. There is no FDA-approved oral tirzepatide: every oral tirzepatide is a compounded preparation, and the injectable tirzepatide trial data does not transfer to a capsule whose absorption has never been measured. 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.

Oral tirzepatide vs orforglipron

What is semaglutide sodium?

Semaglutide sodium is a salt form that the FDA has said is not the same active ingredient as the approved drug and should not be used in compounding, so it is fair to ask which form your pharmacy uses. The compounding comparison covers what to ask.

Compounded semaglutide vs Wegovy

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.