Dosing
Semaglutide dosage charts: injection and oral products
Semaglutide is an ingredient, not one dosing schedule. The brand, formulation, condition being treated, and device determine which chart applies.
How to read a dosage chart
A titration chart describes a labeled schedule, not an instruction to change your own treatment. Starter doses help introduce the medicine; the prescriber selects a maintenance dose according to the indication, response, and tolerability. Calendar weeks do not override side effects or individualized instructions.
Milligrams measure the medicine dose. Milliliters measure liquid volume, and syringe units measure markings on a particular syringe. They are not interchangeable. Never use a brand-name chart to convert a compounded vial into syringe units: concentrations differ, and the pharmacist must provide product-specific instructions.
Sources: FDA concerns with unapproved GLP-1 drugs used for weight loss
Choose the correct product first
Ozempic injection starts at 0.25 mg weekly and has maintenance options of 0.5, 1, or 2 mg for glycemic control. Standard Wegovy injection starts at 0.25 mg weekly and escalates toward its indication-specific maintenance dose, usually 2.4 mg. The separate Wegovy HD option is 7.2 mg for selected adults after established treatment.
Wegovy tablets start at 1.5 mg daily, then move through 4 mg and 9 mg to 25 mg daily, with each initiation step lasting 30 days. Rybelsus uses 3, 7, and 14 mg tablets, while the newer Ozempic tablets use 1.5, 4, and 9 mg for diabetes and specified cardiovascular uses. These two oral products are not substitutable on a milligram-for-milligram basis. Do not substitute one tablet product for another because they contain the same named ingredient.
Sources: Ozempic prescribing information · Wegovy prescribing information, including tablets and Wegovy HD · Rybelsus and Ozempic tablets prescribing information
Why an oral number is larger
Only a fraction of swallowed semaglutide reaches the circulation. Oral products use formulation-specific absorption technology and administration instructions. A 25 mg tablet therefore does not represent the same exposure as a 25 mg injection.
Wegovy tablets must be swallowed whole in the morning on an empty stomach with up to 4 ounces of water, followed by at least 30 minutes without food, other beverages, or other oral medicines. Weekly injection timing is different. Ask the prescriber to manage any switch between formulations.
Sources: Wegovy prescribing information, including tablets and Wegovy HD
A compounded vial needs its own instructions
A vial label might state a concentration in mg/mL, while the prescription states a dose in mg and the syringe has unit markings. FDA has reported serious dosing errors when people confused these measures. Ask the pharmacist for the exact volume and syringe for your prescription, including instructions after any concentration change.
Compounded tablets, drops, and dissolving products are not FDA-approved Wegovy tablets or Rybelsus. Do not use the approved oral schedule as evidence that a different compounded formulation will have the same absorption or results.
Sources: FDA concerns with unapproved GLP-1 drugs used for weight loss
Safety before any dose change
These medicines have boxed warnings about thyroid C-cell tumors observed in rodents; whether the same risk occurs in humans is unknown. Personal or family history of medullary thyroid carcinoma or MEN 2 is a contraindication. This is different from saying that every thyroid condition prevents treatment.
Review severe stomach problems, previous pancreatitis, gallbladder disease, kidney problems, diabetes-related eye disease, pregnancy plans, and all medicines with your prescriber. Insulin or sulfonylureas can increase the risk of low blood sugar when combined with these treatments. Vomiting and diarrhea can cause dehydration and kidney injury.
Severe persistent abdominal pain, inability to keep fluids down, or signs of an allergic reaction require prompt medical assessment. Do not increase a dose to overcome slow weight loss or copy another person's prescription. Tell the anesthesia team about treatment before procedures because delayed gastric emptying can affect aspiration risk.
Sources: Wegovy prescribing information, including tablets and Wegovy HD · Ozempic prescribing information · Zepbound prescribing information · Mounjaro prescribing information
Why tablet and injection milligrams look so different
Milligrams measure the amount of ingredient in a dose, but they do not describe how much reaches the circulation by every route. Oral semaglutide has formulation-specific absorption requirements; an injection delivers medicine by a different route. A larger milligram number on a tablet therefore does not establish a stronger clinical effect than a smaller injection number.
Even oral formulations cannot be exchanged simply because they share semaglutide. The Rybelsus and Ozempic tablet labeling distinguishes their strengths and specifically warns against milligram-for-milligram substitution. Approved switch instructions, where applicable, belong to the current label and prescriber's plan. Do not create your own equivalence table from the maximum doses of two products, and do not assume compounded oral drops have the same absorption as a studied tablet.
Sources: Wegovy prescribing information, including tablets and Wegovy HD · Rybelsus and Ozempic tablets prescribing information · FDA concerns with unapproved GLP-1 drugs used for weight loss
A five-part check before following a chart
First identify the full medicine name. Next confirm whether it is a weekly injection or daily tablet. Then identify the condition being treated and the patient's age group. Finally, match the device and strength supplied to the prescription. Each part can change which instructions apply. The ingredient name alone answers none of those practical questions.
For example, someone with an Ozempic injection prescription for diabetes and someone with Wegovy tablets for weight management can both correctly say they take semaglutide while needing different escalation, administration, and missed-dose advice. If an online program says only "semaglutide," request the formulation before comparing its price or chart. A vial's concentration also must be identified; a syringe marking cannot be read as a universal semaglutide dose.
Sources: Ozempic prescribing information · Wegovy prescribing information, including tablets and Wegovy HD · FDA concerns with unapproved GLP-1 drugs used for weight loss
What a complete switching plan should contain
A switch should specify the old product's last administration, the new product and strength, its first administration date, and the escalation or maintenance plan. It should also explain which old supplies should no longer be used. Taking two semaglutide products together because one is a tablet and one is an injection can create duplicate therapy rather than a useful combination.
Review oral medicine timing, gastrointestinal symptoms, glucose monitoring when relevant, and access to follow-up. Insurance or supply pressure may make a change necessary, but it does not establish clinical equivalence between approved and compounded products. If the route changes, obtain fresh instructions rather than reusing the old reminder, pen technique, or fasting routine. Keep the written plan available to other clinicians who manage your medicines.
Sources: Wegovy prescribing information, including tablets and Wegovy HD · Ozempic prescribing information · Rybelsus and Ozempic tablets prescribing information · FDA concerns with unapproved GLP-1 drugs used for weight loss
Sources and evidence
Sources checked October 2, 2026. Prescribing information supports medication facts; provider pages support advertised services. Offers and labels can change.