Injectable Tirzepatide vs the Wegovy Pill: Weekly Shot or Daily Tablet

On the scale, injectable tirzepatide has the stronger record. In SURMOUNT-1, adults without diabetes on 15 mg a week lost an average 20.9% of body weight over 72 weeks, against 3.1% on placebo (NEJM, 2022). In OASIS 4, the Wegovy pill at 25 mg a day produced 13.6% at 64 weeks, against 2.4% on placebo (FDA label).

Those are separate trials, so the wegovy pill vs tirzepatide gap is an estimate, not a head-to-head result. Tirzepatide is one shot a week at any time of day. The pill is a tablet taken each morning on an empty stomach, followed by a 30-minute wait.

The pill has real strengths: there is no needle, it is an FDA-approved product, which Arbor’s compounded tirzepatide is not, and its label adds lowering the risk of major heart events in adults with established cardiovascular disease. For readers choosing on results, routine and monthly cost, the weekly shot leads.

Each row comes from an FDA label or a drug’s main trial. This is a different question from wegovy pill vs injection, which compares two forms of semaglutide. The guide to oral vs injected semaglutide covers it. Here, oral Wegovy is set against a different molecule.

A tirzepatide injection and the Wegovy pill are different drugs, taken differently.

How tirzepatide & oral semaglutide work

Semaglutide, the drug in the Wegovy pill, acts on one receptor, GLP-1. Tirzepatide acts on two, GIP and GLP-1. Both slow stomach emptying and reduce appetite. That second receptor is the tirzepatide vs semaglutide difference. For a plain-language overview, see the tirzepatide drug information from MedlinePlus.

A swallowed peptide is hard to absorb. Per the label, about 1% to 2% of a semaglutide tablet dose reaches the bloodstream, mostly through the stomach, so each Wegovy tablet contains an absorption enhancer, salcaprozate sodium (SNAC), and comes with strict rules on food and water (FDA label). An injection under the skin avoids the stomach entirely.

Weight loss results in trials

For anyone asking “how much weight can you lose on tirzepatide”, SURMOUNT-1 is the main answer. It enrolled 2,539 adults without diabetes on 5, 10 or 15 mg a week, or placebo, for 72 weeks. Average weight loss was 15.0%, 19.5% and 20.9% by dose, against 3.1% on placebo, and 57% on 15 mg lost at least 20% (NEJM). For more detail, see the tirzepatide weight loss trial data summary.

Wegovy pill results come from OASIS 4, which enrolled 307 adults without diabetes and measured weight at 64 weeks (NEJM, 2025). In the FDA label’s analysis, average weight loss was 13.6% on the 25 mg tablet and 2.4% on placebo, and 27.9% on the tablet lost at least 20% (FDA label).

No trial has put tirzepatide against the pill. SURMOUNT-5 comes closest, but it compared tirzepatide with injectable semaglutide, not the tablet, and found 20.2% against 13.7% at 72 weeks (NEJM, 2025). For that head-to-head trial, see Zepbound vs Wegovy compared. SURMOUNT-1 and OASIS 4 differ in length, size and population, each was funded by its drug’s maker, and individual results vary.

Dosing, timing & food rules

A tirzepatide injection is taken once a week, at any time of day, with or without meals. Zepbound’s label starts dosing at 2.5 mg for 4 weeks, then raises it in 2.5 mg steps no sooner than every 4 weeks, to a maintenance dose of 5, 10 or 15 mg (FDA label). A missed dose can still be taken within 4 days.

Each Wegovy tablet is taken in the morning on an empty stomach, swallowed whole with no more than 4 ounces of plain water. You then wait at least 30 minutes before eating, drinking anything else or taking other oral medicines. Every 30 days the dose climbs, from 1.5 mg to 4 mg, then 9 mg, then 25 mg from day 91 (FDA label). A missed tablet is skipped, and the next one is taken the following day.

With a compounded program, your clinician sets the dose and the schedule.

Wegovy pill cost vs tirzepatide cost

At launch in January 2026, the Wegovy pill cost $149 a month in cash for the starting dose and $299 for the 9 mg and 25 mg doses (CNBC). With insurance coverage, it can cost as little as $25. In its February 2026 TrumpRx fact sheet, the White House said the monthly price of the Wegovy pill would fall from $1,349 to as low as $149, depending on dosage strength (White House).

The wegovy pill cost climbs with the dose, and these prices change often. Arbor lists compounded tirzepatide from $149 a month, and its current catalog shows no dose-based increases.

FDA status & how to get each

FDA approved the Wegovy pill on December 22, 2025 (Drugs@FDA), and its label covers weight reduction and, at the 25 mg daily maintenance dose, lowering the risk of major heart events in adults with established cardiovascular disease and obesity or overweight.

Tirzepatide is FDA approved as the brand Zepbound. Compounded tirzepatide is not FDA approved, and FDA does not review compounded drugs for safety, effectiveness or quality before they are marketed (FDA). A licensed pharmacy prepares it for one patient, on a prescription.

Scroll the table sideways to see both columns →

Your clinician weighs goals, routine, history and budget. Arbor compounded tirzepatide is a weekly injection, prescribed only after a board-certified physician reviews your history. Compounded tirzepatide is not FDA-approved.

Injectable tirzepatide may fit better when:

• The average trial result matters most to you
• A daily fasting routine would be hard to keep
• You would rather dose once a week than seven times
• You want a price that does not change by dose

The Wegovy pill may fit better when:

• You do not want to use a needle
• You want an FDA-approved product, or your insurance covers it
• You have established cardiovascular disease, where the pill’s label includes lowering the risk of major heart events
• Room-temperature storage suits your travel

Tell your clinician about every medicine you take. Zepbound’s label advises a non-oral or backup method of birth control for 4 weeks after starting and after each dose increase.

For anyone weighing the wegovy pill vs zepbound or compounded tirzepatide, the shot brings the larger average trial result, a routine with no fasting window and one listed monthly price. The pill offers a needle-free tablet and full FDA approval, with a daily 30-minute rule attached.

A licensed clinician reviews your history before either is prescribed, and if it is not the right fit, it is not prescribed.