What Is Gemtesa? Uses, Dosage, and What You Need to Know in 2026

If your doctor just prescribed Gemtesa, or you're researching it as a possible treatment for overactive bladder, this guide covers everything you need to know: what Gemtesa is, what it treats, how to take it, and what to expect.

What Is Gemtesa?

Gemtesa is a brand-name prescription medication. Its active ingredient is vibegron. It belongs to a class of drugs called beta-3 adrenergic receptor agonists. It comes as a 75 mg light green film-coated tablet taken once daily. It was first FDA-approved in December 2020 and commercially launched in the U.S. in April 2021. It is manufactured and marketed by Sumitomo Pharma America.

What Is Gemtesa Used For?

Gemtesa has two FDA-approved indications:

Overactive bladder (OAB) in adults — with symptoms of urge urinary incontinence (leakage when you feel a sudden urge to urinate), urgency (strong, sudden urge to urinate), and urinary frequency (urinating more than 8 times per day). Approved December 2020.

OAB in adult males with benign prostatic hyperplasia (BPH) — specifically for men who are already taking pharmacological therapy (such as an alpha blocker) for BPH and are experiencing OAB symptoms on top of that. Expanded approval December 2024.

What Is Overactive Bladder?

Overactive bladder is a condition where the bladder muscle contracts suddenly and involuntarily, creating an urgent, often uncontrollable need to urinate. OAB affects over 30 million Americans over age 40. It significantly impacts quality of life — affecting sleep, work, social activities, and emotional well-being. Symptoms include:

Urgency: a sudden, intense urge to urinate that's hard to control

Urge incontinence: involuntary urine leakage associated with urgency

Frequency: urinating 8 or more times in 24 hours

Nocturia: waking 2 or more times per night to urinate

Gemtesa Dosage: How to Take It

The FDA-approved dose of Gemtesa is one 75 mg tablet taken by mouth once daily. Key points about how to take it:

With or without food. Food does not affect how Gemtesa works in your body.

Can be crushed. If you have trouble swallowing the tablet, it can be crushed, mixed with one tablespoon of applesauce, and taken immediately with a glass of water.

No dose adjustment needed for kidney or liver problems — unlike some other OAB medications.

No titration required. You start at 75 mg — there's no starter dose or dose ramp-up needed.

How Long Does Gemtesa Take to Work?

Many patients notice improvements within 2 weeks of starting Gemtesa. In clinical trials, significant improvements in urgency, frequency, and incontinence episodes were measurable at 2 weeks and continued improving through 12 weeks. For full benefit, allow up to 3 months of consistent treatment.

Results from the EMPOWUR Phase 3 trial: At 12 weeks, patients on Gemtesa experienced an average of 2 fewer daily leakage episodes and 2 fewer daily bathroom trips compared to placebo.

Who Should NOT Take Gemtesa?

Gemtesa is contraindicated only in patients with known hypersensitivity to vibegron or any ingredient in the formulation. Use caution and discuss with your doctor if you have:

Bladder outlet obstruction — increased risk of urinary retention

Are taking other OAB medications (muscarinic antagonists) — increased urinary retention risk

Are taking digoxin — Gemtesa can increase digoxin levels by about 21% (Cmax); monitoring required

Are pregnant or breastfeeding — safety not established; discuss with your doctor

Storing Your Gemtesa

Store Gemtesa at room temperature: 68°F to 77°F (20°C to 25°C). Short-term exposure to 59°F to 86°F is acceptable. Keep out of reach of children. For a deeper look at how Gemtesa works inside your body, read How Does Gemtesa Work? Mechanism of Action Explained.