User Reviews for Methimazole

I have grave's disease since a year ago and was prescribed methimazole last year. I stopped taking them soon after because I am so susceptible to catching everything my kids bring home. It takes even longer to get over illnesses I hate it. I'm 32 and have 3 little kids. I don't want to get my thyroid out or go through radiation. I'm back on it again this year but I'm sick again. I'm fatigued and achy. Don't think it's the med side effects.

Been on a very low dosage of this to level out my slightly hyperactive thyroid. It does what it’s supposed to. I do have to go to my endocrinologist every 6 months to check blood work and we adjust dosage according to my levels. It helps get my levels where they need to be and alleviates the problems i was having with the the hyperthyroid. i haven’t noticed any negative side effects with this medication. I just recommend getting ur levels regularly checked to make sure ur dosage can be adjusted correctly. Read More Read Less

I have not ben on it long enough to know if it worked for me yet. I do know for me the three separte times I ate 1 chocolate before bed (Ghirardelli Milk Chocolate Caramel Square or a reeses peanut butter cup) it gave me strange vivid dreams and one of the dreams was a nightmare dream. I have not had any other side effects. I was on 5mg for 4 weeks and they bumped me up to 10mg. As of today I am 6 weeks into taking this medicine. Folks I urge you to read your paperwork the pharmacy gives you with your Rx. It states you can not suddenly stop this medicine, you will put yourself at risk for Thyroid storm (also called thyroid crisis and thyrotoxic crisis) happens when your thyroid gland releases a large amount of thyroid hormone in a short amount of time. It’s a rare complication of hyperthyroidism. Thyroid storm is a medical emergency and is life-threatening. Work with your Doctor. Read More Read Less

This medicine is amazing!!! I’ve been on 10 mg a day for the last 10 days!!! I already feel so much better!!! Very happy with this medicine!!! Absolutely no side effects!!! I was skeptical after reading reviews, but have experienced none!!! Haven’t gained an ounce either!!! Just make sure you don’t have coffee for an hour after taking it!!! Definitely a magical medicine!!!

I was diagnosed with Graves’ disease in January 23, I felt awful before starting on this meds, I actually called ambulance as I was feeling like dying of stroke, and after some blood tests it was found that it was overactive thyroid plus very low magnesium levels. First week on 10mg I felt really well, it was then increased to 40 mg as I had very bad thyroid blood test results. Then the nightmare started.. I was crying all the time, I had pain down the left arm, headaches for 30 days straight, I felt like I am going to faint at least 10 times a day, nausea, tired all the time, shivers in my spine and legs, burning sensations in part of my arms or legs, I also felt weird sensations in my collar bones and brain. I was told that it is not possible to have these side effects on this meds. I really thought that I suffer with some really serious illness and I felt like I am going crazy as no doctor believed me, they rather prescribed me anxiety meds (which I didn’t take). However after cutting down to 30 mg then 20mg gradually helped a lot. I am currently on 10 mg dose, but beginning to feel unwell again, so I am going to cut down myself to 5 mg. I don’t get how endocrinologists are not aware of these symptoms. I have a small child and I have to have someone with me when I am feeling like I described above as I cannot take care of myself let alone of a small child. I am not able to go shopping, or outside at all, cook or clean. I am going to ask to have my pills swapped or go for surgery asap. I cannot function like this.. Read More Read Less

My thyroid levels are back in the normal range.

Worst thing that I have ever taken. I got all of the side effects and had asthma and abdominal pain daily. It destroyed my circadian rhythm too.

I was diagnosed with Graves 3 years ago. I also have nodules on the thyroid. Originally was on 10mg, then 5mg, then 0, but back to 5mg. I have tremors from the disease which the med hasn't taken away and I've always been overweight. I told my former Dr about the headache on the left side of my brain and she said it was nothing. My current Dr said "they don't recommend patients my age to be on this medication over 1-1/2 years". I've been using it for 3! Other option will be removal. We'll know how to proceed after next ultrasound. Read More Read Less

I was diagnosed with Graves Disease 2 months ago after not immediately treating it for 6 months. I started off with 15mg a day. The first two weeks was hell. I had constant heart palpitations, weight gain, diarrhea, high blood pressure, headaches and in one instance I had what I think was pericarditis. After the 2 weeks I started feeling better. My symptoms went away. My hormone levels dropped quite suddenly so the doctor lessened my dose to 5mg, which I’m still on. I’ve begun to feel worse again. This time joint pain, back pain, leg pain, bad skin(especially on legs), heart palpitations are back but not as frequent. My anxiety is also through the roof. I feel it isn’t working but my blood work shows stable hormone levels. My blood pressure is in the normal range for my age(30s).Read More Read Less

After 1 day, I was extremely tired and requiring naps. After 4 days, I suddenly started getting extreme headaches on my right side. It’s so severe I can barely think. It comes in clusters, which I learned is Cluster Headaches. Dr said “no relation to 5mg of pills” but pharmacist said “stop taking this pill.” I’ve stopped for only 2 days but am left with severe headaches that I’ve never encountered before taking this pill. I’m done.

Gained 8 lbs in about 8 months. Feel sore in legs, arms & shoulders.

For two years prior to being officially diagnosed as having sub-clinical hyperthyroidism, I was in the throes of menopause and suffering with severe anxiety, unintentional loss of 30lbs (I looked skeletal), inability to sleep, increased bowel output, night sweats, heart palpitations, brain fog, irritability, heat intolerance/over heating constantly, hypoglycemia, and gum recession. My TSH was below normal and both my T3 and T4 were very low. My doctor told me I was an anomaly due to all my thyroid levels being on the very low or sub-clinically low level. He also told me he just wanted to monitor my condition at first and did not recommend taking any anti-thyroid medications at the time because I was just coming out of menopause and he hoped the thyroid condition might reverse itself once I was postmenopausal. It didn't. Then Covid hit and for the next year it was impossible for me to get an appointment to see him. My quality of life was declining and I felt like I was going crazy. When I was finally able to be seen, my doctor found I had thyroid nodules and formally diagnosed me with sub-clinical hyperthyroidism, I was prescribed 5mg per day of Methimazole. I was very concerned about taking this drug, even at the low dose I was prescribed, as I had read all of the negative reviews regarding the side effects. People referring to Methimazole as "The Devil" scared me. I started taking the Methimazole and immediately suffered with severe headaches, itching of my legs, feeling tired all the time, sensitivity in my teeth that came and went, a subtle change in taste, constipation, and feeling cold all the time. I thought about discontinuing taking it but didn't. I had blood work done 6 weeks after starting Methimazole and found I now had flipped to being subclinically-hypothyroid. While the side effects are a nuisance, they are tolerable as my body adjusts to the medication. I am thrilled that I actually sleep at night now as compared to lying in bed wide awake all night sweating with a "buzzing brain". I no longer wake up with the pounding heart palpitations and dizziness I used to have to deal with every morning. My mental clarity is the best part of taking Methimazole - no more brain fog or feeling I am losing my mind. My doctor is amazed that I responded so quickly to the Methimazole and has adjusted my dose down to 5mg 5 days a week. Fingers crossed the reduction will totally resolve the headaches, constipation, and feeling of being cold that I have been experiencing and I will become euthyroid. It is too soon to say how long I will need to take this medication or if I may relapse. My doctor is hopeful I may be able to completely stop taking it in the near future. I want to encourage anyone who is prescribed Methimazole to give it a chance. Even with the side effects I have experienced so far, the change in my mental clarity and quality of life is remarkable. I am thrilled to feel more like my old self again. Read More Read Less

I was diagnosed with an overactive thyroid/ Grave's Disease in 2019 today I am still on Methimazole (2022) I am on 5 mg 1 pill a day. My T4 and T3 are within the proper range and I am now working on my TSH to get in the proper range. It does take a strict diet and eating the proper foods to control the thyroid ( lots of discipline ) Being on Methimazole and the proper mg's I have had no side effects. I do have an option to take the RAI pill if needed as surgery for me is not an option.

Itchy and hives after three weeks. Try to take with a full meal.

Leg cramps and horrible skin issues .

Felt horrible before I started on this med. weak, starving all the time, slept horribly, muscle shakes, lost 20 lbs. that I did not need to loose. Been taking 10 mg daily for a month, ZERO side affects from this drug. I feel so much better, no more muscle weakness and tremors, sleeping much better, have not gained alot of weight. Doing so much better on the med. Not sure how long yet I will have to take it. Have appt. again with specialist next week. So we will see what my levels are now in my blood. Read More Read Less

Started taking a small dose and gained 20lbs in about 3 weeks and felt a bit bloated and just 'off'. My endocrinologist said the weight gain wasn't due to the med as this isn't a side effect but I think it was totally due to the med. Other patient reviews say the same thing. I was watching what I ate and doing yoga daily and nothing else in my life had changed. I stopped taking the med and lost the weight. However, my t4/t3 levels went up again so will try the med again at a 2.5mg dose as I don't want surgery and then have to take other meds for the rest of my life!Read More Read Less

I've been on this for probably 4 years now. I only take 5mg a day x 6 days a week. It took awhile to adjust the right amount of mgs. My numbers are real good and want to keep it that way. My liver gets checked a few times a year.

From ptu to methimazole my doctor switched and i got heart palpitations, fatigue, sometimes feel dizzy for first 3 days of taking the medication hope this is not a serious side effects of the drug and it this wont take long i hate my heart skipping beat i feel tired

ITCHING ALL OVER BUT HANDS AND FEET ARE ITCHING ME CRAZY! I stopped this after a month. I’m getting the whole thyroid removed!