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Diabetes Medicines
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Endocrine System

Diabetes Medicines

Managing diabetes often requires a combination of lifestyle changes and medication, tailored specifically to the type of diabetes and the individual's health needs.

What is diabetes?

Diabetes is a disease characterized by high blood glucose levels. Glucose, derived from food, provides energy to the body's cells, while the hormone insulin helps glucose enter those cells. In type 1 diabetes, the body does not produce insulin; in type 2 diabetes, the body does not make or use insulin effectively.

Treatment Overview

Common treatments include a diabetic meal plan, regular physical activity, and medicines. Less common treatments include weight loss surgery, or for some with type 1 diabetes, an artificial pancreas or pancreatic islet transplantation.

Medicines for Type 1 Diabetes

People with type 1 diabetes must take insulin because their bodies no longer produce it. Because different types of insulin work at different speeds and durations, a provider may prescribe more than one type. Patients must check their blood sugar at home to guide decisions regarding food, activity, and medication.

Insulin delivery methods include:

  • Needle and syringe
  • Insulin pen
  • Insulin pump (provides small, steady doses)
  • Less common methods: inhalers, injection ports, and jet injectors

Medicines for Type 2 Diabetes

While some people manage type 2 diabetes with diet and exercise, others require medication. These may be pills or injectable medicines. Over time, patients may need to switch to combination medicines or use both pills and injections. Insulin may also be required during specific times, such as pregnancy or hospitalization.

Important Considerations

Medication does not replace the need for a healthy diet, smoking cessation, and regular physical activity. Before starting or changing any treatment, discuss the following with your provider:

  • Your target blood sugar level
  • Steps to take if blood sugar is too low or too high
  • Potential interactions with other medications
  • Possible side effects

Note: Never change or stop your diabetes medicines without consulting your health care provider first.

Frequently Asked Questions

You should monitor your blood glucose levels regularly at home and track your A1C results during routine checkups. If your fasting or post-meal blood sugar readings consistently exceed your target range, or if your A1C rises despite consistent medication adherence, it indicates the current regimen may need adjustment. Contact your provider to discuss potential dose changes, adding a second agent, or switching to a different class of medication.
The need for insulin often arises when the pancreas can no longer produce enough of its own insulin to meet the body's needs, typically indicated by persistently high blood sugar levels despite maximum tolerated doses of oral medications. Other triggers include severe hyperglycemia, unexplained weight loss, or specific life events such as pregnancy, surgery, or acute illness. Your provider will determine the timing based on your beta-cell function and overall metabolic status.
You must inform your surgeon or dentist about your diabetes and all medications you take. Depending on the type of procedure and whether you will be fasting, your provider may instruct you to skip your morning dose of certain pills or adjust your insulin to prevent hypoglycemia while you are unable to eat. Never stop medication on your own without specific medical guidance, as this can lead to dangerous blood sugar spikes or drops during the stress of surgery.
Medication safety varies significantly by drug class. Many oral medications, such as metformin, are often considered safe during pregnancy, but others like SGLT2 inhibitors or GLP-1 receptor agonists may need to be stopped. Insulin is the standard treatment during pregnancy as it does not cross the placenta. Always consult your obstetrician and endocrinologist before continuing, stopping, or changing any diabetes medication during pregnancy or lactation to ensure both maternal and fetal safety.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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