Can Blood Pressure Medication Affect Fasting Blood Sugar Levels? - Nutrition

Share to:

Antihypertensive medication


Dear Doctor: I have high blood pressure and need to take my blood pressure medication in the morning along with fasting blood glucose measurements.
Is it acceptable to take my blood pressure medication before measuring my fasting blood glucose? Will it have any effect on the fasting blood glucose results? Thank you!

Xiao Lin, 50~59 year old female. Ask Date: 2007/06/09

Dr. Huang Ruipei reply Nutrition


Ms.
Hsiao-Lin: Hello! Fasting blood glucose measurement typically requires fasting (including abstaining from fluids) for at least 8 hours.
If you take antihypertensive medication before the test, it does not count as fasting, and it may affect your fasting blood glucose levels to some extent.
The degree of impact varies depending on the specific antihypertensive medication, as different drugs have different pharmacological effects; you may want to consult a professional pharmacist regarding this.
I recommend that you measure your fasting blood glucose upon waking in the morning, and then take your medication as directed by your physician (either before or after meals).
It is best to maintain a consistent routine to avoid any disruptions.
Wishing you good health, RD Huang Rui-Pei.

Reply Date: 2007/06/09

More Info


When it comes to managing high blood pressure and monitoring fasting blood sugar levels, it is important to understand the potential interactions between medications and how they can affect your health. In your case, you are concerned about whether taking blood pressure medication could influence your fasting blood sugar readings.

Firstly, it is essential to recognize that certain blood pressure medications can indeed have an impact on blood sugar levels. For instance, some diuretics and beta-blockers may cause slight increases in blood glucose levels. However, the effect is usually minimal and varies from person to person. Medications such as ACE inhibitors (like Ramipril) and ARBs (like Losartan) are generally considered to have a neutral effect on blood sugar levels, making them preferable for patients with diabetes or those at risk of developing diabetes.

In your specific situation, if you are taking blood pressure medication in the morning before measuring your fasting blood sugar, it is unlikely to significantly alter your fasting blood sugar readings. The timing of medication can be important, but most blood pressure medications do not have an immediate effect on glucose metabolism. Therefore, you can take your blood pressure medication as prescribed and then proceed to measure your fasting blood sugar without significant concern.

However, it is always a good practice to consult with your healthcare provider regarding the timing of your medications and blood sugar monitoring. They can provide personalized advice based on your specific medications, overall health, and any other conditions you may have. If you notice any unusual changes in your blood sugar levels after starting a new blood pressure medication, it is crucial to report these changes to your doctor.

Additionally, lifestyle factors such as diet, exercise, and stress management play a significant role in both blood pressure and blood sugar control. Maintaining a balanced diet low in refined sugars and high in fiber, engaging in regular physical activity, and managing stress can help stabilize both blood pressure and blood sugar levels.

In summary, while some blood pressure medications can affect blood sugar levels, taking your medication in the morning before measuring fasting blood sugar is generally acceptable and should not cause significant issues. Always keep an open line of communication with your healthcare provider to ensure that your treatment plan is effective and safe for your overall health. Regular monitoring and adjustments to your medication regimen may be necessary to achieve optimal control of both your blood pressure and blood sugar levels.

Similar Q&A

Does Hypertension Medication Increase Risk of Diabetes?

Hello: I am 72 years old and have been taking antihypertensive medication for over a decade. Recently, I had a check-up, and my fasting blood glucose level reached 198, with a slight presence of glucose in my urine. I am unsure if my high blood pressure is causing elevated blood ...


Dr. Lin Changqi reply Cardiology
Antihypertensive medications do not cause diabetes. Increasingly, research suggests that chronic conditions such as hypertension, diabetes, and dyslipidemia share a common origin (e.g., metabolic syndrome). Therefore, it is recommended that you undergo a thorough evaluation of yo...

[Read More] Does Hypertension Medication Increase Risk of Diabetes?


Do You Still Need Medication for Diabetes and Hypertension?

Hello, doctor: I would like to ask if it is necessary to continue taking medication for diabetes and hypertension when the measured blood glucose and blood pressure values before taking the medication are within normal ranges (fasting blood glucose 88, bedtime blood glucose 97). ...


Dr. Chen Qingbin reply Internal Medicine
Hello Mingming: Because you are on medication, your blood sugar is well controlled. If you abruptly stop the medication, your blood sugar and blood pressure will inevitably rise. You can discuss with your physician to adjust the dosage. Amaryl can increase insulin secretion, whil...

[Read More] Do You Still Need Medication for Diabetes and Hypertension?


Impact of Medications on Blood Sugar Levels: A Patient's Inquiry

Hello, doctor. Six months ago, I measured my fasting blood sugar at a testing center, and the value was 110. Since then, I have been controlling my diet, and my recent readings have been around 83-107. However, I have not yet measured my HbA1c (as I was unaware that it required a...


Dr. Lin Zhebin reply Family Medicine
Hello: 1. The oral medication you are using does not affect blood sugar levels, and while the topical eczema cream, eye ointment, and eye drops contain steroids, topical steroids generally do not significantly impact blood sugar. Additionally, issues related to inflammation and i...

[Read More] Impact of Medications on Blood Sugar Levels: A Patient's Inquiry


Does Using Beta Blockers Increase Blood Sugar Levels During Checkups?

Could you please clarify if the use of beta-blockers will cause an increase in blood glucose levels during a physical examination (compared to not using beta-blockers)? Thank you, little old man.


Dr. Chen Qingbin reply Internal Medicine
The use of beta-blockers does not cause an increase in blood glucose levels.

[Read More] Does Using Beta Blockers Increase Blood Sugar Levels During Checkups?


Related FAQ

Blood Pressure Medication

(Cardiology)

Blood Sugar

(Family Medicine)

Blood Pressure

(Family Medicine)

Blood Glucose Level

(Internal Medicine)

High Blood Pressure

(Internal Medicine)

Medication Consultation

(Nutrition)

Blood Pressure

(Neurology)

Hemoglobin A1C

(Internal Medicine)

Oral Contraceptives

(Pharmacology)

Medication Side Effects

(Cardiology)