published: true

A Plain-Language Guide to Diabetes Medications

Type 2 diabetes treatment has changed dramatically in the last decade. Where patients once had a handful of options, there are now dozens of medications across several different classes — each working in a different way. Here's a plain-language breakdown.

Metformin: Still the Starting Point

For most people with type 2 diabetes, metformin is the first medication prescribed. It works by reducing the amount of glucose your liver releases into your blood and making your cells more sensitive to insulin. It's been used for decades, is inexpensive, and has a strong safety record.

Common side effects are digestive — nausea, diarrhea, stomach upset — and usually improve after a few weeks. Taking it with food helps.

Sulfonylureas: Older but Still Used

Medications like glipizide and glimepiride stimulate your pancreas to produce more insulin. They're effective and affordable, but can cause low blood sugar (hypoglycemia) and weight gain. They're often used when metformin alone isn't enough.

GLP-1 Receptor Agonists: The Newer Class

Semaglutide (Ozempic, Wegovy), liraglutide (Victoza), and dulaglutide (Trulicity) mimic a hormone that tells your pancreas to release insulin when blood sugar is high. They also slow digestion and reduce appetite, which is why many people lose weight on them.

Most are injected once weekly or daily. They've also been shown to reduce cardiovascular risk in people with heart disease.

SGLT2 Inhibitors: Removing Sugar Through Urine

Dapagliflozin (Farxiga), empagliflozin (Jardiance), and canagliflozin (Invokana) work by blocking a protein in your kidneys that reabsorbs glucose — so excess sugar is excreted in urine instead of staying in your blood.

They also have proven benefits for heart failure and kidney disease, making them increasingly popular for patients with those conditions.

Insulin: When Other Medications Aren't Enough

Some people with type 2 diabetes eventually need insulin — either because their pancreas has stopped producing enough, or because other medications aren't controlling blood sugar adequately. People with type 1 diabetes need insulin from the start.

Insulin comes in many forms: rapid-acting (like insulin aspart/NovoLog), long-acting (like insulin glargine/Lantus), and combinations. Your doctor will determine which type and dose is right for you.

Checking Availability

Insulin and GLP-1 medications like semaglutide have experienced significant shortages. Use MedTrack to check real-time stock at pharmacies near you before making the trip — especially for injectable medications that can't easily be substituted.