Have you switched from one desiccated thyroid to another? Let’s share.

“A new scientific truth does not triumph by convincing its opponents
and making them see the light, but rather because it opponents eventually die,
and a new generation grows up that is familiar with it” ~ Max Planck

NOTE: This page has been updated to the current date and time.


Granted, we note from patient reports that all brands work based on individual reports of any brand.

But some patients, for a variety of reasons, feel they do well on some NDT’s, but not on others. It’s very individual. This may be due to the fillers in any product.

Or, there are some like me who had to switch from one desiccated thyroid brand to another, not because of fillers, but changes in the product.  I, for example, was on the pre-reformulated Armour from 2002 to 2009, and successfully treated.

Then came 2009 when patients were reporting Armour not working as well anymore. It had been reformulated–the cellulose raised and the sucrose decreased.  I just let my old Armour run out, and I started on Erfa Thyroid from Canada. And it was an easy and successful switch for me.

But even some batches of Erfa seemed to go bad in 2014, so I then moved over to NP Thyroid, which has been great to this day.

So I am an example of the way that all three did work for me, and simply had to change due to reported problems in the way Armour, or Erfa, was made.

What if any switch doesn’t result in good results?

For many, the NDT they have switched to works just as well, as happened to me. But for some, a switch has not been smooth. One brand seemed to serve them well, while another brand caused them to tank.

What causes the switch problems?

For many, it could be the adrenals. On one product, they may have felt fine, yet due to an underlying adrenal issue they hadn’t caught, a different brand with that “something different” may have been the umpff that revealed their adrenal problem.

For others, the issues on the new brand could be from a sensitivity to one or more of the fillers. You can read about all fillers in each brand here.

And for still others, there is a mystery of why one didn’t work and another did.

What has been your experience? What did you switch from and to? Armour? Naturethroid? Erfa? Compounded? Thyroid-S? Let’s share.

If I need to switch, how do I do it?

It’s pretty much an even switch. i.e. if I was doing well on 3 grains on one brand, I go on 3 grains of the other.

But if I wasn’t doing well on a brand, it’s important to ask one self four things:

  1. Did I raise the current brand high enough? It’s common for hypothyroid symptoms to return on lower non-optimal doses. How to raise is explained here.
  2. Do I have an issue with a filler?? They can be looked at here.
  3. Do I have optimal levels of iron? Because if your iron levels aren’t “optimal”, it can cause problems when raising NDT. Optimal has nothing to do with normal. See this page.
  4. Do I have an adrenal problem being revealed due to NDT? 


  • Join the STTM STTM Facebook page for daily tips and inspiration on thyroid issues. 
  • Have you ever heard of the gal who calls herself nonstickpam? I’ve known Pam for many years, and she has spent most of that time giving helpful advice on low carb eating and how to maintain your weight while dealing with thyroid and/or adrenal issues. Recently, she wrote an article for STTM about this very issue: http://www.stopthethyroidmadness.com/hypothyroid-and-weight-issues/


184 Responses to “Have you switched from one desiccated thyroid to another? Let’s share.”

  1. david

    With Thyro-Gold is it best to take it once a day, or split the dose take it twice a day?Currently I am taking one 300mg capsule at 6 am on an empty stomach. It has made a big difference in my energy but I’m still not back to normal. I am going to add an additional 150 mg but am not sure if I should take it with my morning dose or 12 hours later. Thanks

  2. david

    Thanks for the reply. I’ve read the book so many times I almost have it memorized. But I will re-read Chapter 2.

  3. Linda

    Has anybody switched from Armour to Thyroid s? How where they feeling?

  4. Sandy

    I switched to thyroid-s, took it today for the first time and had some anxiety and major irritability. Is this normal when starting out on thyroid meds? Is thyroid-s considered stronger than armour? Thanks!

  5. Noelle

    Hi, I have been taking Thryo-Gold since July of last year after my tests revealed low thyroid levels. I have had great results with this brand, but I recently found out that I am 12 weeks pregnant and the coleus in Thryo-Gold has me wondering if I need to switch brands. Has anyone had any experience with taking Thryo-Gold while pregnant or switching brands while pregnant? I am scared to switch brands while pregnant and messing with my thyroid levels. Any info would be greatly appreciated!

  6. Lysa

    Hello. I just started on Thyro-Gold 2 1/2 weeks ago. I also started Selenium 3 weeks ago. And I just started Iodine 3 days ago. My question is this: Before starting all three, I was having diarrhea. I was also having frequent bowel movements. Since starting all three supplements/meds, I have begun to have issues with constipation. Would any of the three cause this? Or is this due to Hypothyroid? Constipation has never been an issue for me. I started with 75 mcg of thyroid in the morning. Then, the 2nd week, I added 75 mcg in the evening. This morning, I just increased to 150 mcg in the morning and will take 75 mcg this evening.


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