Pioglitazone: uses, side effects & brands

Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed 5 November 2026

Pioglitazone improves insulin sensitivity in type 2 diabetes. It belongs to the Oral diabetes medicine group. These help control blood sugar in type 2 diabetes through different mechanisms.

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Drug type — dosing is set by your doctor

Measure	Range
Drug class	Oral diabetes medicine
Type	Prescription
Dose	Individual — ask your doctor or pharmacist

What it is used for

Type 2 diabetes
Used with diet and exercise
Combined with metformin or other diabetes medicines

Common brand names

India: Pioz, Piozone
Worldwide: Actos

Common side effects

Weight gain
Fluid retention and ankle swelling
Higher risk of bone fractures
Raised liver enzymes (uncommon)

Before taking it — precautions

Not for people with heart failure — it can worsen fluid build-up
Tell your doctor about bladder cancer history or blood in the urine
Liver function is checked; tell your doctor about liver disease

When to see a doctor urgently

Breathlessness, rapid weight gain or swelling (possible heart failure — urgent)
Blood in the urine or pain passing urine
Yellow eyes or skin, dark urine

Not a prescription — no dose shown. The right dose of pioglitazone depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.

Frequently asked questions

Why can pioglitazone cause swelling?

It makes the body hold more fluid, which can cause ankle swelling and, in some people, worsen heart failure.

Does pioglitazone cause low blood sugar?

On its own it rarely does; the risk rises with sulfonylureas or insulin.

Is there a link with bladder cancer?

Some studies suggest a small increased risk with long-term use. Report any blood in the urine to your doctor.

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Sources & further reading

Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.