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Nature-Throid and Weight Gain: What Users Say

Weight gain: mentioned by 9 users (12.3%)

Based on user experiences from 73 Nature-Throid reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

hair loss 19.2%
weight gain 12.3%
fatigue 11.0%
brain fog 8.2%
joint pain 6.8%
headaches 5.5%
tiredness 5.5%
chest pain 4.1%
depression 4.1%
weakness 4.1%

Reviews for Nature-Throid

Commonly mentioned side effects
  • Tep...
  • April 19, 2017

For Underactive Thyroid "I have been on Levothyroxine for over 20 years. I had normal levels for years on my meds yet felt like crap! No energy, severe joint pain, almost debilitating at times, weight gain, hair loss, dry skin, trouble sleeping. I begged my doctor to change my meds. She switched me to Nature-Throid and only after a week, I feel so much better. Joint pain is almost totally gone along with feeling way more energy. I cannot wait to see what I feel like a month from now. I feel like I've gotten my life back!"

9 / 10
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110 Report
  • Mam...
  • Taken for 10 years or more
  • February 26, 2019

For Hashimoto's disease "I have used Nature-Throid for 15+ years very successfully, that is until the 'Great Back Order of 2017'. I scrambled and panicked and found enough at other pharmacies until it came back in early 2018. My question is: WHAT DID THEY DO TO IT? Hypothyroid symptoms returned with a vengeance, I have gained 30 lbs since last January, have lost nearly all of my eyebrows, ache all over in my joints and muscles, can't think clearly half the time and on and on and on. It's so hard to have fallen into this hole, and the sad part is no one has any answers. Now Nature-Throid is on backorder again, but who cares, it doesn't work anyway. Run, don't walk in the other direction from this defective thyroid hormone (or whatever it is)."

1 / 10
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78 Report
  • jod...
  • Taken for 2 to 5 years
  • December 29, 2019

For Hypothyroidism, After Thyroid Removal "I had RAI (antibodies for Graves and Hashimoto's). It worked for me until they recently retooled the plant. I'm not sure why there is a change in the product, but I've had a dramatic drop in T3/T4 blood test numbers, below the lowest acceptable level. I ache all over. My hair is dry and brittle. I have put on 20 pounds over the last few months. I am so tired! Why did they change something that worked?"

2 / 10
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42 Report

Frequently asked questions

  • CMS...
  • Taken for 5 to 10 years
  • June 14, 2019

For Hypothyroidism, After Thyroid Removal "I, too, have experienced various hypo symptoms since the back order of 2017: dry hair, hair breakage, and hair loss, weight gain, muscular aches and pains, and depression. The company says that nothing has changed, but I disagree. I tried posting on RLC Labs' site, and they blocked me from posting. That says it all! I found out, from someone who has done a lot of research, that the FDA has made RLC change the formula to call it a 'drug,' and I also found out that one of the ingredients is propylene glycol, a derivative of anti-freeze. I am not quite sure about that, though. I do know that whatever they did since the recall has caused problems for many, many people. I am now going to try a compounding pharmacy that will make up a pill with the same ratio of T3 T4 with only one filler, microcrystalline cellulose. Hopefully, this will finally help me feel better!"

2 / 10
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46 Report
  • Jes...
  • Taken for 6 months to 1 year
  • October 8, 2019

For Underactive Thyroid "I gave it 4 stars because I did start to feel better on this medication. I started getting some energy back and felt pretty good. However, the energy boost was not worth the hair loss and weight gain it caused! I really wish I would not have taken it at all!!"

4 / 10
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29 Report

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  • Anonymous
  • Taken for 2 to 5 years
  • June 14, 2020

For Hashimoto's disease "Been taking Nature-Throid (48.75 mg) for about 2 years now, and feel great as long as I also sleep well, manage my stress, and stay mostly on the Autoimmune Paleo diet. Have been playing around with diet and lifestyle, and if I eat certain things, I notice a rise in TSH, as well as symptoms (brain fog, low energy, and weight gain). I checked it by sticking to the AIP diet for 3 months, and my TSH went to normal range, and I felt normal. It’s not ideal, but worth it to feel good. Also, I always take meds on an empty stomach in the AM."

10 / 10
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22 Report
  • Arl...
  • Taken for 1 to 6 months
  • April 7, 2018

For Hypothyroidism, After Thyroid Removal "So happy with Nature-Throid. I needed a change after 15 years with Levoxyl because my provider wanted to lower that drug’s dosage, which I couldn’t tolerate. Two months into Nature-Throid, I’m feeling very good. I was concerned that I’d experience mood swings, tingling, joint pain, and the like, but so far, all I have is a little weight gain."

10 / 10
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13 Report

More FAQ

  • Reb...
  • Taken for 2 to 5 years
  • September 21, 2022

For Hypothyroidism, After Thyroid Removal "I had a removal of my thyroid, and I was put on three other medications beforehand, but then I was put on Nature-Throid. I did wonderful, no side effects. I had no weight gain, I slept well, no sweating. I didn’t have any side effects whatsoever, I felt great. Now they’ve taken Nature-Throid off the market, and we are all waiting for it to come back on the market. I am on Amor now, and I have gained a lot of weight. I have got head fog so bad, muscle weakness, no energy. I can’t go to bed, I feel like I’m going insane. I need to be put back on Nature-Throid."

10 / 10
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4 Report
  • Mat...
  • October 14, 2019

For Hypothyroidism, After Thyroid Removal "I've been taking NT for several years. I feel great on it and did not have weight gain or hair loss. I switched to it after Armour changed its formula and never looked back."

9 / 10
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33 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.