HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

I just started taking propanolol for hyperthyroidism. it started giving me headaches and i felt really alert all day and night. why would this happen?

A doctor has provided 1 answer
Dr. Kenneth Lanier answered

Specializes in Pharmacology

Vasodilation: Propranolol cases your blood vessels to dilate (vasodilation). When this occurs in your brain it can cause headaches. If having hyperthyroidism caused you to feel drowsy or fatigued, you may now be experiencing alertness because the medication is treating the condition.

Answered 6/30/2014

5.1k views

Thank

Related Questions

A member asked:

Put on 10mg propranolol for hyperthyroid symptoms. Feel tired and muscle weakness. Went for a walk and felt horrible after. Will this pass?

A doctor has provided 1 answer

A member asked:

Just prescribed propranolol hct 10mg. Have asthma and am afraid to take it. Doc says it will stop my tremors caused by hyperthyroidism. Should I take?

A doctor has provided 1 answer

A member asked:

Should I go to the ER if I have hyperthyroidism and I am experiencing frequent palpitations , lightheaded etc..? Free T4 2.2. Propranolol not working

A doctor has provided 1 answer

A member asked:

Can an overactive thyroid cause numbness and tingling in the body? can it make you feel off balance when you get up. And can propranolol prevent a thyroid storm. ? I am very anxious?

5 doctors weighed in across 2 answers

A member asked:

Propanolol gives me headaches and makes me really alert instead of tired. Im not on any other medications. What would cause this?

A doctor has provided 1 answer

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

Are there any medications or foods etc I should avoid being hyperthyroid? Am awaiting specialist appointment. Dr started me on propanolol.
Hyperthyroid, endo prescribed 10mg of propanolol, I am only 95lbs and pretty sensitive to meds, is this a high dose?
Can I take atenolol instead of propanolol for hyperthyroidism?
Hr rate 104-118 even when resting cause? History hbp hyperthyroidism controlled w/thyroidectomy palpitations inderal (propranolol) 10mg twice a day
I have hyperthyroidism and the dr put me on 10mg propranolol for heart palps. Is it ok to continue light exercise? Will the med decrease my pressure?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.