Get Virtual Care
For Businesses
About Us
A member asked:
Does it take longer for synthroid (thyroxine) to work vs. levothyroid?
A doctor has provided 1 answer
Not really: Absorption of each thyroid preparation is a little different, and you should not switch brands, if possible. But both synthroid (thyroxine) and Levothroid are long acting hormones, with a half-life of 1 week. I doubt you would notice a difference with regards to onset of action, for example if you were starting to take them for hypothyroidism.
Answered 6/27/2014
5.2k views
Thank
Related Questions
A member asked:
How long does it take for the increase in Synthroid (thyroxine) dosage to take effect?
A doctor has provided 1 answer
A member asked:
How long does it take for Synthroid (thyroxine) to leave your system after ceasing to take it?
A doctor has provided 1 answer
A member asked:
My 4 year old took 8 of my 200mcg synthroid (thyroxine). The p.A.-c said it would not bother him. But I am still worried. Is there instant side effects or longer?
A doctor has provided 1 answer
A member asked:
How long does it takes for thyroxine to reverse constipation caused by hypothyroidism?
A doctor has provided 1 answer
A member asked:
How long before an increase in Synthroid (thyroxine) from 5 tabs of 25 mcg to 8 tabs each week takes full effect for hypothyroidism treatment?
2 doctors weighed in across 2 answers
People also searched for:
How long does Synthroid (thyroxine) dosage change take to work? I'm 13w pregnant & just found out it's way too low so I'm worried I'll misscarry.
I take levoxyl (thyroxine) and it makes my skin so dry and itchy. Lotion doesn't work. What do I do?
During a recent PCP visit my blood work showed a vitamin d deficiency. When is the best time to take vitamin d? Im currently taking 200 mcg synthroid in the AM and stir a statin after dinner. Thank you. Vitamin D
How long can you live without thyroxine after a thyroidectomy? How long does it take to become unwell?
If I take Synthroid (thyroxine) first thing in the morning, how long do I have to wait before I take Propranolol?
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 questionMore of what we treat
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.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
