Phentermine vs. Personalized Compounded Semaglutide

Phentermine is a daily appetite-suppressant pill, a Schedule IV controlled substance labeled for short-term use of a few weeks. Personalized compounded semaglutide is a weekly GLP-1 injection whose dose your provider adjusts over time. At Padgett in Ocala, phentermine's first month is $127.40 booked online with a card on file; personalized compounded semaglutide starts at $149 a month.

Padgett Medical Center offers both, in person or by telehealth anywhere in Florida: phentermine weight loss in Ocala and personalized compounded semaglutide. Your provider decides which one, if either, is right for you.

How do phentermine and personalized compounded semaglutide work?

Both help you eat less, in different ways. Phentermine is a stimulant-type drug related to amphetamine, taken as a pill. Its FDA label calls it an anorectic, or appetite suppressant, but notes it has not been proven that curbing appetite is the main way such drugs work. Phentermine is not a GLP-1 medication.

Personalized compounded semaglutide is a GLP-1 medication, given as a weekly injection just under the skin. The prescribing information for FDA-approved semaglutide describes GLP-1 as a natural regulator of appetite and calorie intake. That label says semaglutide activates the GLP-1 receptor, which is found in parts of the brain that control appetite, and slows how fast the stomach empties.

How long can you stay on each one?

Phentermine is labeled for a short course, while FDA-approved semaglutide is labeled for long-term use. Phentermine's label calls it a short-term add-on, for a few weeks, to a plan built on exercise, behavior change and a reduced-calorie diet. MedlinePlus, the National Library of Medicine's drug guide, says most people take it for 3 to 6 weeks.

The label adds that tolerance to its appetite effect usually develops within a few weeks. At that point the drug should be stopped rather than taken above the recommended dose, a decision your provider makes with you. How long you can take phentermine goes deeper.

The label for FDA-approved semaglutide says it is meant to reduce excess weight and keep it off long term, with a reduced-calorie diet and more activity. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) warns that you will probably regain some weight after stopping a weight-management medicine, so stopping is a plan you make with your provider; see what happens when you stop a GLP-1.

Which one leads to more weight loss?

Studies of FDA-approved semaglutide ran far longer and produced much more weight loss beyond placebo than the short trials described in phentermine's label, though head-to-head trials of weight-loss drugs are limited. In those phentermine-class trials, which lasted a few weeks, people on the drugs lost more weight than people on placebo and diet, but only a fraction of a pound more per week.

In the STEP 1 study of FDA-approved semaglutide, 1,961 adults without diabetes took 2.4 mg once a week or a placebo for 68 weeks, alongside a lifestyle program. Those on the drug lost an average of 14.9% of their body weight, and those on placebo 2.4%. A 2026 review of 69 randomized trials for the American College of Physicians found that FDA-approved semaglutide and tirzepatide led to the greatest weight loss compared with placebo, with few direct comparisons between treatments.

These are averages from studies of FDA-approved products, not results for Padgett's personalized compounded medication, and not a promise of what you will lose.

How do the side effects compare?

They differ. Phentermine's label lists dry mouth, an unpleasant taste, trouble sleeping, restlessness, dizziness, tremor, headache, a fast or pounding heartbeat, raised blood pressure, diarrhea or constipation, and changes in sex drive or erections. It also warns of two rare but serious problems: primary pulmonary hypertension, an often fatal lung disease, and heart valve disease. Both were reported with phentermine taken alongside fenfluramine or dexfenfluramine, and in rare cases with phentermine alone.

Call your provider right away about new shortness of breath, chest pain, fainting, leg swelling, or exercise that suddenly feels harder. Phentermine side effects, and why your blood pressure is checked has more.

In weight-loss trials of FDA-approved semaglutide injection, nausea affected 44% of people on the drug and 16% on placebo, and diarrhea 30% and 16%. Vomiting, constipation, stomach pain, headache and fatigue were also common, and digestive effects were reported most often while the dose was being raised.

That label carries a boxed warning: semaglutide caused thyroid C-cell tumors in rodents, and whether it does in people is unknown. It should not be used with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2 (MEN 2). Other warnings include pancreatitis, gallbladder disease, low blood sugar with insulin or a sulfonylurea, kidney injury from dehydration, a faster resting heart rate, and inhaling stomach contents under anesthesia, so tell anyone planning a procedure that you take it. Managing GLP-1 side effects has tips.

Who might each one suit?

It depends on your health, goals and preferences; your provider makes the call. Phentermine's label covers people starting with a body mass index (BMI) of 30 or more, or 27 or more with a risk factor such as controlled high blood pressure, diabetes or high cholesterol. The FDA-approved semaglutide label covers adults with obesity, or overweight plus a weight-related health problem. Check yours with the BMI calculator.

Phentermine may fit if you want short-term help or prefer a pill. Its label rules it out with a history of heart or blood vessel disease, such as coronary artery disease, stroke, an irregular heart rhythm, heart failure or uncontrolled high blood pressure, and with an overactive thyroid, glaucoma, an agitated state, a history of drug abuse, pregnancy, nursing, or a monoamine oxidase inhibitor (MAOI) antidepressant in the past 14 days. It calls for caution even with mild high blood pressure.

Personalized compounded semaglutide may fit if you want a longer-term plan and don't mind a weekly injection. Beyond the thyroid history above, tell your provider about any pancreatitis, gallbladder disease, kidney problems or diabetic eye disease, all named in the FDA-approved semaglutide label's warnings. That label also doesn't recommend it with severe gastroparesis (very slow stomach emptying).

If you take insulin or a sulfonylurea diabetes pill, both labels say its dose may need lowering, so your provider decides any change. And MedlinePlus says older adults usually should not take phentermine because other medicines for the same condition are safer, while the FDA-approved semaglutide label reports more hip and pelvis fractures in people 75 and older on the drug than on placebo in a heart study. Leaning toward a GLP-1? Also compare personalized compounded semaglutide and personalized compounded tirzepatide.

What does each one cost at Padgett?

For new patients, phentermine's first month is $127.40 when booked online with a card on file, 35% off the regular $196. It includes the provider visit, the first month of medication and a B12 injection. Each monthly refill is $166 and covers the monthly visit, the medication and a B12 injection. The card-on-file price is for phentermine's first month only; what phentermine costs in Ocala has details.

Personalized compounded semaglutide is priced by dose, from $149 a month at the starting dose; personalized compounded semaglutide in Ocala lists the other doses. The monthly price is your medication. Your provider visit is $100 and is free when you start medication at that visit; the only other charge is a $50 no-show fee. Because that price depends on your dose, compare the two over several months.

Neither has a contract, and nothing is charged when you book. The no-show fee applies if you don't show, or don't cancel or reschedule at least 24 hours ahead. Padgett is self-pay; see personalized compounded semaglutide without insurance.

How do visits work at Padgett in Ocala?

Either way, your visit is with Sarah Weir, APRN, an advanced practice registered nurse, at 200 SW 8th St., Suite A, or by telehealth while you are physically in Florida. Your provider decides whether either medicine is safe for you, and no prescription is promised in advance.

Phentermine adds a few steps. Blood pressure is checked at the visits, and a telehealth phentermine visit also needs a valid Florida driver's license or state ID and a picture of a recent blood pressure reading, sent before the visit. Without a Florida ID, the phentermine visit is in person. See the rules for phentermine by telehealth in Florida.

Personalized compounded semaglutide is medically supervised and shipped to your door in Florida. You get clear instructions for your exact medication, your provider adjusts the dose with you, and you report side effects rather than changing your dose yourself. Your first month on personalized compounded semaglutide walks through the start.

Padgett offers a free consultation: a free 15-minute phone call with the medical staff; it is not a visit with the provider and nothing is prescribed on it. Visits are held with a card on file; book without one and the appointment isn't confirmed until staff reach you by phone.

Book a phentermine visit or book a weight-loss visit for personalized compounded semaglutide, in person in Ocala or by telehealth. Questions? Call (352) 369-0104, Monday to Friday, 9:00 AM to 5:00 PM.

Personalized compounded semaglutide and personalized compounded tirzepatide are compounded drugs that have not been approved by the FDA. They have not been reviewed by the FDA for safety, effectiveness, or quality. FDA-approved products containing semaglutide and tirzepatide are available. Individual results vary.

This article is educational and is not medical advice. Talk with a licensed provider about your own health, medications and treatment options.