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Armour Thyroid and Tiredness: What Users Say

Tiredness: mentioned by 34 users (13.4%)

Based on user experiences from 253 Armour Thyroid 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.

weight gain 15.0%
hair loss 13.8%
tiredness 13.4%
anxiety 11.1%
insomnia 10.3%
fatigue 9.5%
brain fog 7.9%
depression 7.9%
headaches 6.7%
heart palpitations 5.5%

Reviews for Armour Thyroid

Commonly mentioned side effects
  • Che...
  • July 9, 2013

For Underactive Thyroid "When I was diagnosed with thyroid problems around nine years ago. My TSH was a 6.7. I was placed on Synthroid. I developed terrible headaches right from the start. The doctor decided to switch over to Levoxyl brand. Let me tell you, it has been a whirlwind of problems from tiredness, to aches and pains coming out of nowhere. I gained 50 lbs in the last nine years. Constantly dieting, going to the gym, nothing worked. Swelling and cloudy thinking. The doctor said my TSH was normal. Okay, just started on Armour Thyroid 60mg. Unbelievable. My aches and pains are gone. Lost five pounds in these last two weeks. Swelling is gone and I am alert! Do your homework and take charge. I finally did! 'Armour changed my life'."

10 / 10
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  • Sul...
  • May 2, 2016

For Underactive Thyroid "Many years ago I was told by my doctor that I had hypothyroidism. First, I took Synthroid, which made me very sick, so for years I never took anything, ate healthy organic foods, and felt wonderful. I went recently to a specialist (Endocrinologist), and he also said my blood levels showed an underactive thyroid. The strange thing is that I don't have any of the symptoms of this disease. But I tried Armour Thyroid for about a month and had chest pains, stomach cramps, and I was so tired all the time. I spent most days in bed. Now I went off Armour Thyroid, and I feel back to normal. I don't care what a test shows... it's how I feel that matters."

1 / 10
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148 Report
  • Dee...
  • Taken for 2 to 5 years
  • October 17, 2019

For Hypothyroidism, After Thyroid Removal "I have been taking Armour Thyroid since 2015. My TSH has been creeping back up in the last few months, and I feel like something changed in the Armour. I am exhausted, feel comatose, like I'm never fully awake, and dragging my body around. Wondering if there has been a reformulation or a product quality issue. I have an endo appointment, and I know the doc's solution will be to go on Synthroid. Anyone else having similar recent (2019) issues with Armour?"

7 / 10
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92 Report

Frequently asked questions

  • Anonymous
  • December 13, 2011

For Hashimoto's disease "I found out I had an underactive thyroid about 2 years ago, and as a college student, I found it so hard to focus in class. My doctor placed me on Synthroid, and I took it for about 6 months. I had severe headaches, depression, weight gain with no weight loss in sight, and feeling tired and horrible. I went to my ob-gyn for a yearly check-up, and he checked my thyroid, and now I'm taking Armour. I love this medicine. All the headaches, loss of focus, and the weight gained again are gone! I take it at the same time every day, and this pill works for me!"

10 / 10
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171 Report
  • Lkd...
  • August 27, 2016

For Underactive Thyroid "I have had many of the same experiences with the chemical thyroid meds. I asked to be switched over to Armour and felt great. Then, after a few years, I noticed something was terribly wrong, had heart palpitations and just super tired all the time. I went to the pharmacy, and he told me that they changed the formula and that it had more fillers. He said that he could compound it for me, and that would take care of the problem. So, I asked my doctor and got a prescription for it to be compounded. All I can say is what a difference!!! Back to my old self."

8 / 10
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106 Report

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  • Anonymous
  • January 31, 2016

For Underactive Thyroid "Had taken Armour Thyroid for 20 years but starting 2 years ago I experienced brain fog, aches and pains which was thought to be fibromyalgia, no energy, severe headaches, insomnia and hard to get out of bed and always tired. I have taken many tests, scans and seen many doctors during that time and couldn't find an answer to my complaints. I felt like I was losing my mind and in desperation began searching the internet and came across information about Armour. I understand Forest Labs bought Armour in 2014 and Actavis bought them in 2015 - lo and behold! I saw complaints which were identical to mine and quit taking them on September 22, 2015. I felt better within 2 days and am angry that I lost 2 years of my life."

1 / 10
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116 Report
  • Anonymous
  • January 31, 2016

For Underactive Thyroid "Had taken Armour Thyroid for 20 years but starting 2 years ago I experienced brain fog, aches and pains which was thought to be fibromyalgia, no energy, severe headaches, insomnia and hard to get out of bed and always tired. I have taken many tests, scans and seen many doctors during that time and couldn't find an answer to my complaints. I felt like I was losing my mind and in desperation began searching the internet and came across information about Armour. I understand Forest Labs bought Armour in 2014 and Actavis bought them in 2015 - lo and behold! I saw complaints which were identical to mine and quit taking them on September 22, 2015. I felt better within 2 days and am angry that I lost 2 years of my life."

1 / 10
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More FAQ

  • kle...
  • December 19, 2013

For Underactive Thyroid "I have been on Armour for 4 days and I have already noticed a difference. I could actually take off my wedding ring. I sleep really well for about 7 hours. Not waking up constantly. My swelling has gone down significantly. My joints do not ache. Not getting as winded. I am taking 60mg. I have noticed that I am really tired at night. I like the suggestion of taking it at night as well. I'll have to check with my doctor and get his opinion."

10 / 10
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  • Jsg...
  • January 18, 2021

For Hashimoto's disease "I have taken Armour Thyroid for 30+ years after Synthroid did not work. In the spring of 2020, I began to feel terrible. Headache, tiredness, pain in my joints, no energy at all. My IM ran a thyroid panel on me. Everything normal (I don’t think he ran antibodies). I asked him to switch me to WP Thyroid. He did, and within weeks I started to feel like my old self. That lasted for 6 months, and WP Thyroid was pulled from the market. I had to go back on Armour Thyroid. All my previous symptoms are back, and I feel terrible again. I am sure that Allergan has reformulated Armour Thyroid. We must report and complain to the FDA to get RLC Labs preparations back on the market."

2 / 10
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  • Jsg...
  • January 18, 2021

For Hashimoto's disease "I have taken Armour Thyroid for 30+ years after Synthroid did not work. In the spring of 2020, I began to feel terrible. Headache, tiredness, pain in my joints, no energy at all. My IM ran a thyroid panel on me. Everything normal (I don’t think he ran antibodies). I asked him to switch me to WP Thyroid. He did, and within weeks I started to feel like my old self. That lasted for 6 months, and WP Thyroid was pulled from the market. I had to go back on Armour Thyroid. All my previous symptoms are back, and I feel terrible again. I am sure that Allergan has reformulated Armour Thyroid. We must report and complain to the FDA to get RLC Labs preparations back on the market."

2 / 10
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  • Jus...
  • September 21, 2020

For Hashimoto's disease "Been on Armour Thyroid for 2 plus years. I have never felt this miserable in all my life. Except NP thyroid. Synthroid and levothyroxine helped with numbers. Didn't fight the brain fog, lethargy, and annoying side effects. I have been living in a nightmare for over 2 years being on this medicine. I've been suicidal, continued, if not worse, brain fog, hair, skin, and nails. My whole body is not functioning anymore. Functional medicine people push this like drug pushers. Tried compounded thyroid as well. What a joke. These drugs seem to be a joke. Haven't been able to work full time in 8 years. Dr. took me off estrogen, and this is what happened to me. Hypothyroid, functional medicine doctors didn't pay enough attention to the numbers, I kept telling them over and over again. Now I have Hashimoto's and feel like rubbish. Functional medicine is a joke. But Armour and NP are the biggest joke. Have no clue where I will be going next on this nightmare journey. Good for you all that feel better on this medication."

1 / 10
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  • Lei...
  • Taken for 6 months to 1 year
  • July 2, 2019

For Underactive Thyroid "I’ve been on Armour Thyroid 60 mg for about a year, have gained 15 pounds, and am very tired now. July 2019, got a new batch, and now I am feeling overmedicated. Has Armour Thyroid changed once again?"

6 / 10
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  • Bab...
  • August 31, 2016

For Hashimoto's disease "I have Hashimoto's thyroiditis. United Healthcare and Medicare say Armour Thyroid is not covered by them. I was on Armour Thyroid for 15 years. My insurance made me try other meds. I tried other thyroid meds including Nature-Throid. I put on 48 lbs under Nature-Throid, my body was tired, I was dizzy, could not function, and had incontinence. I am now back on Armour Thyroid feeling better every day, decreasing in weight, and other symptoms are gone. But I have to pay for it myself, and since I am on Social Security, it is a big expense. Thanks, Armour Thyroid."

10 / 10
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67 Report
  • Cbo...
  • Taken for 2 to 5 years
  • April 16, 2018

For Underactive Thyroid "I was prescribed Armour Thyroid for four years. The first year was great! Felt better than ever before (currently 42 years of age), but at about the two-year mark I noticed a difference. My energy plummeted, almost seemed depressed. So I started taking antidepressants. That did not help. So to answer all my problems, my doctor kept increasing my Armour Thyroid dose. I went from 60 mg to 160 mg in a four-year period. I could not sleep, I felt depressed, and had absolutely no energy. I went to a cardiologist and endocrinologist to help see what the problem could be. They both advised me it was the hormones: testosterone, progesterone, estrogen, and Armour Thyroid medication."

1 / 10
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53 Report
  • Spa...
  • July 18, 2021

For Hypothyroidism, After Thyroid Removal "I have been taking Armour Thyroid for 10 years, and it has been great. In March of 2021, I started feeling dizzy, old, weight gain, and breaking out in hives. Something has changed with Armour for sure!!! I tried Levothyroxine and was totally exhausted, so back on Armour and hives are all back again. Does anyone know if the fillers changed or something?"

4 / 10
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26 Report
  • Anonymous
  • September 11, 2009

For Underactive Thyroid "I was prescribed Armour Thyroid after trying Synthroid and finding out it didn't work for me. With Synthroid, I actually felt worse: nausea, no appetite, even more tired, but Armour Thyroid was such a relief and made me feel normal again. It made my hair stop falling out at such an alarming rate and helped my weight stabilize. I actually have energy to do things now! I have been told by my pharmacist though that Armour Thyroid is no longer being made. I have to try to switch to another natural thyroid medication, and I'm not sure what my doctor will be giving me. I hope my testimonial on the effectiveness of this medication, in combination with everyone else's, might show how good this medication is and bring it back."

10 / 10
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  • HLM...
  • February 9, 2017

For Thyroid Cancer "I had my thyroid removed due to cancer 9 years ago. The doctor initially put me on Synthroid in various dosages, which didn't work, then levothyroxine, which also did not work. It took about a year before we all agreed my body was not absorbing it for some reason. A miserable year. I wasn't sure I would ever get to be 'me' again. I was always exhausted, sad, lost my temper to a degree it was scary, and everything took a lot of effort. Depression had certainly set in, and I had not experienced that before. Finally, a neighbor told me about Armour, so I asked for it. Don't believe the Synthroid smear campaign. This stuff works and is cheap! I alternate two strengths daily, and a 30-day supply from Costco is about $35."

10 / 10
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45 Report
  • Bar...
  • October 11, 2013

For Hypothyroidism, After Thyroid Removal "I've been on Armour Thyroid for 4 months or so, and I've lost no weight, and I'm tired all the time, also gained weight. Having hot flashes and night sweats, and I've been feeling dizzy. My TSH is low along with my T3 and T4. It's time to switch medicines once again. I've been on 2 other medicines, and nothing is helping me. I'm so frustrated. I need some help, anyone know of a better medicine out there?"

1 / 10
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66 Report
  • can...
  • November 16, 2009

For Underactive Thyroid "After I gained 60 lbs in a 3-month period approximately 8 years ago, it was determined that I had hypothyroidism. I was given Synthroid, which stopped the weight gain, however, I have never felt quite right, even though my TSH and T3/T4 would be normal. My hands and feet were always cold, my eyebrows were very thin, I was always tired, etc. I started taking Armour Thyroid about 4 months ago and feel terrific. I have even started losing weight (15 lbs so far). I am worried that I have been having problems trying to fill my prescription lately. Please tell me that they are not going to discontinue Armour Thyroid? I am getting several different explanations as to why it is not readily available."

10 / 10
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64 Report
  • Anonymous
  • Taken for 1 to 6 months
  • December 9, 2015

For Underactive Thyroid "I started taking Armour in November 2015. The first couple of days, I felt more tired. But after 4-5 days, I wasn't tired throughout the day. I lost 6 lbs in that month. But then, when I started my refill, all the weight came right back on. Is it possible for a whole batch to be bad? Or did my body regulate to that dose?"

5 / 10
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  • dna...
  • Taken for less than 1 month
  • June 16, 2012

For Hypothyroidism, After Thyroid Removal "I have been on some form of thyroid for 20 years. First I was on Armour, then Synthroid. But what changed all that was my thyroid cancer diagnosis 6 months ago. They kept me on Synthroid and never told me there was a difference. It seems to me that you need T4 and T3, which Armour provides. I felt so achy after my surgery. Every day my body hurt, and I was so tired and absent-minded. Also, I have had weight gain. Went to a different doctor last week and have switched to Armour. We shall see. The main difference I feel so far is less body aches. That is wonderful to me!"

4 / 10
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  • AZG...
  • August 20, 2011

For Underactive Thyroid "I've been on Armour for over 3 months now, and my TSH and T4 levels are only getting worse. I go to the doctor every 3 weeks to have my blood drawn, and there has been no improvement! Every time I go to the doctor, they keep having to up the dosage to 30 mg, and each increase I feel worse and worse. My hair has fallen out, I feel lethargic and achy all over, I can't sleep at night, and when I finally do get to sleep, I wind up staying in bed for 13 hours! I have no energy."

1 / 10
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55 Report
  • Tia...
  • November 8, 2020

For Hashimoto's disease "Armour Thyroid 60 mg was okay for about 3 months, then I got edema in my feet and hands. Paresthesia in my leg and face. Horrible nerve problems with trembling, shaking hands. I was dizzy and very depressed, hair loss, weight gain, tiredness, sweating, crying, vision problems-couldn’t drive, freezing. I couldn’t function. All my hypo symptoms were worse than ever. Emergency carpal tunnel surgery. Heart palpitations, high blood pressure. I reduced and then stopped, and symptoms started to go away. Back to Synthroid and am a work in progress again. 5 endo docs and none helped me. They just look at TSH. Good luck, everyone. Stay away from Armour, and Nature Thyroid was just as bad. All my scans and blood work normal. Good luck, everyone."

1 / 10
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27 Report
  • sus...
  • Taken for 1 to 6 months
  • February 21, 2018

For Underactive Thyroid "I started on Armour 2 months ago. I was on levothyroxine for 3 months. I feel like my fogginess is gone (I call it being airheaded:). I'm still in the beginning phase, but has anyone lost any weight on these pills??? I watch my diet and exercise (hired 2 different trainers), but have been stuck on my weight. I feel heavy and tired. Supposedly, I'm 25-30 pounds overweight. I know if I lose weight, it will help with my energy. I'm supposed to do blood work next week. If my numbers are normal, I think I may try to do a full hormone blood panel test and pay out of pocket."

5 / 10
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  • No-...
  • July 13, 2015

For Underactive Thyroid "There is a level of inconsistency in its quality and in its potency. I have tried taking it in different ways. Starting with swallowing it (caused immediate bloating). Tried it sublingually and finally crushing it. Again, I have found some difference in the way it crushes. Some are crumbly (more potent) and some are sticky (same batch). One whole box was totally useless. I didn't realize this immediately. Side effects kept increasing with each dose, and I kept feeling tired, nauseated, and lacked energy. This effect wore off 4-5 hours after taking the pill and felt almost back to normal. I opened a new batch and things improved within 2 days...less side effects and more energy levels. Other side effect is a sweet taste. I will try a different brand."

5 / 10
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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.