A question many people living with Type 2 Diabetes have is, "Should I continue taking this medication? Or should I change it?" Maybe you've wondered about this too. Maybe your blood sugar levels aren't well controlled, or maybe your medication is causing you side effects. Today, let's talk about when you might need to change your diabetes medication.
When should you consider switching medications?
There are several reasons why your doctor may decide to change your treatment plan. Two of the most important are uncontrolled blood sugar levels and side effects from medications.
High Blood Sugar
The most important thing in diabetes is to keep your blood sugar levels within a certain range. Only then can you minimize the complications that can arise from diabetes. If your sugar levels are not controlled by the medicine you are currently taking and continue to be high, your doctor may change the dose of the medicine or add a new medicine.
Imagine, the medicine you started with initially controlled your sugar levels well. But over time, that medicine alone may not be enough. That's normal. Then, if one medicine isn't enough, the doctor will add a second one. If two aren't enough, a third one may be added.
Low Blood Sugar
Some diabetes medications can cause your blood sugar levels to drop too low. In medical terms, this is called hypoglycemia . When this happens, you may experience symptoms such as shakiness, excessive sweating, dizziness, and confusion . This can be dangerous.
If you experience these symptoms frequently, be sure to tell your doctor about it. He or she may be able to reduce the dose of your medication or switch you to another medication.
Medications and their side effects
If you have side effects that are interfering with your daily life or are causing problems with other medications you take, that may also be a reason to switch diabetes medications. But remember, when you start some new medications, you may experience minor side effects at first as your body gets used to them and then go away. But if they persist or are severe, talk to your doctor.
Let's now look at the most commonly used medications for diabetes, how they work, and what side effects they may cause.
| Drug category | Description and common side effects |
|---|---|
| Biguanides For example: Metformin | This is the first-line drug for type 2 diabetes. It makes the body use insulin more efficiently. Side effects: Nausea, flatulence, bloating, diarrhea, vitamin B12 deficiency. (These can be reduced by taking the medicine with food). Serious but rare condition: Lactic Acidosis. Seek immediate medical attention if you experience symptoms such as difficulty breathing, unusual muscle pain, or extreme fatigue. |
| Sulfonylureas E.g. Glimepiride, Glipizide | Helps the pancreas produce more insulin. Side effects: Low blood sugar (hypoglycemia), weight gain, skin rash, dark urine. |
| Meglitinides For example: Repaglinide | This also helps the pancreas produce insulin, but the effect is short-lived. Side effects: Low blood sugar (Hypoglycemia), weight gain. |
| Thiazolidinediones (TZDs) For example: Pioglitazone | Improves insulin function in the body. Side effects: Swelling due to water retention in the body, weight gain, and increased levels of bad cholesterol (LDL). There have also been reports of links to serious conditions such as heart attacks and bone fractures. |
| SGLT2 Inhibitors For example: Dapagliflozin, Empagliflozin | It causes the kidneys to excrete excess sugar in the urine. Side effects: Increased risk of urinary tract and vaginal yeast infections. However, these medications have also been found to reduce the risk of heart disease and kidney disease. |
| DPP-4 Inhibitors For example: Sitagliptin, Linagliptin | It helps the pancreas release insulin after eating. Side effects: Sore throat, cold, stomach upset. Rarely, joint pain, pancreatitis, etc. may occur. |
| GLP-1 and GIP/GLP-1 Agonists E.g.: Semaglutide, Tirzepatide | These come in the form of injections or pills. They help control blood sugar levels and also help with weight loss. Side effects: nausea, vomiting, diarrhea, stomach pain. |
| Insulin Therapy | When other medications fail to control blood sugar, insulin injections may be necessary. The main side effect: Low blood sugar (hypoglycemia). In addition, headache, pain/soreness at the injection site may occur. |
Important note: The above are just a few of the common side effects. Each of these classes of medications can interact with other medications you are taking (e.g., high blood pressure, cholesterol medications). Therefore, it is very important to inform your doctor about all medications you are taking.
Lifestyle changes and new medical conditions
Even changes in your lifestyle may be a reason to change your medication.
For example, if you lose weight or start exercising daily, your body's sensitivity to insulin may increase, and you may need to reduce your medication dose. Similarly, if you gain weight or become less active, you may need to increase your medication dose or add another medication.
Additionally, if you develop a new medical condition (e.g., kidney disease, liver disease, heart disease), your diabetes medication may not be compatible with the medication you are taking. In such cases, your doctor will also change your diabetes treatment plan.
Take-Home Message
- It's normal to have to change your type 2 diabetes medication over time. Don't worry about it.
- Poor blood sugar control, intolerable side effects, lifestyle changes, or the development of new medical conditions may lead to medication changes.
- If you have any problems with your medication, talk to your doctor about it.
- Never stop or change the dosage of your diabetes medication without medical advice. It can be very dangerous.
- Inform your doctor about all other medications, vitamins, and supplements you are taking.
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