Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
Generic thyroid drugs
About This Forum:

Questions in the Thyroid forum are answered by Mark Lupo, MD. Topics covered include Goiter, Graves Disease, Hyperthyroid, Parathyroid/Calcium Problems, Thyroid Cancer, Thyroid Nodules/Cysts, Thyroiditis, Thyroid & Pregnancy, Thyroid Stimulating Hormone (TSH), Thyroid Tests, and Thyroid Surgery.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
This expert forum is not accepting new questions. Please post your question in one of our medical support communities.
Blank Blank

Generic thyroid drugs

Why are generic thyroid drugs a no-no?  I just found out yesterday my thyroid levels are low and was prescribed Synthroid 50 mcg.  The dr allowed a generic subsitition and I received levothyroxine.  Last night after doing more reseach, I see that generic drugs are supposedly a no-no for hypothyroid.  Why?  If this is a drug I might have to be on the rest of my life, I'd certainly rather pay generic cost for it...

Thanks in advance.
Related Discussions
97953_tn?1193367871
This is b/c the generics have at least 8 different producers -- the absorption and consistency between these sources may differ, that is why with a medication that has such a narrow therapeutic window (ie, TSH 0.5-2.0) we prefer to stick with a brand to ensure that patients receive a consistent product.
3 Comments
Blank
Avatar_n_tn
Hi doordie -

Both my endo and my pharmacist say generic is fine as long as you stick with the same manufacturer.  It's when you switch back and forth between manufacturers that you get into inconsistencies.
Blank
Avatar_n_tn
Hi, your so right about that doctors seem to focus more on prescribing synthroid, I had myxedema coma 3 years ago and never agin have been able to get my thyroid under control, the endos kept giving me synthroid, a lot of different doses  form 112mcg to 150mcg,and the last one was 125mcg which would  all get me hyperthyroid every single time,, until my new doc gave me a generic and i am on 125mcg  of levothyroxine and its working great for now and I have not gone hyper like i do with 125mcg within a few weeks on it, so generics  work best for some of us and are cheaper too! but docs just focus on synthroid, I am glad i went to see a regular doc and he gave me this because I havent been feeling sick as i normally do on synthroid, of course i will stick with the same brand but i will definitely not go back to synthroid
Blank
Continue discussion Blank
This Forum's Experts
97953_tn?1193367871
Mark Lupo, M.D.Blank
Thyroid & Endocrine Center of Florida
Sarasota, FL
MedHelp Health Answers
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
RSS Expert Activity
242532_tn?1269553979
Blank
Emotional Eating Control: How to St...
Aug 28 by Roger Gould, M.D.Blank
233488_tn?1310696703
Blank
New Cannabis Article from NORTH Mag...
Jul 20 by John C Hagan III, MD, FACS, FAAOBlank
242532_tn?1269553979
Blank
3 Reasons Why You are Still Binge E...
Jul 14 by Roger Gould, M.D.Blank