Synthroid for Underactive Thyroid User Reviews (Page 3)
Synthroid has an average rating of 6.3 out of 10 from a total of 77 reviews for the treatment of Underactive Thyroid. 53% of reviewers reported a positive experience, while 32% reported a negative experience.
Reviews for Synthroid
- lilcal
- Taken for 1 to 6 months
- May 19, 2015
"I been taking .025 MG everyday for two months.... I was not sure why I was taking it... I know I had a super low sex drive n now have a high sex drive whereas I have to relieve my self two to three times a day... I get very horny for no reason n notice my sperm is more thicker n I'm producing a lot more now...."
- Rocke...
- May 29, 2010
"I was born with a thyroid condition. I am a 23-year-old female. I did the other brand for a while, and it made me tired, sad, and just made me feel hopeless. I am on Synthroid 88 mcg, and although I sometimes feel sad, my weight is maintained, I'm able to work, and play with my 1-year-old daughter, who, thank God, is healthy. Finding the right dosage is so important and is trial and error. If everything is good and you only have one symptom like sadness... get a hobby, again a close friend is so important and always take your pill!"
Frequently asked questions
- What is the difference between Levoxyl and Synthroid?
- Can I take Cytomel and Synthroid together?
- What is the difference between Unithroid and Synthroid?
- Should you take your thyroid medication at night?
- Anonymous
- June 24, 2010
"I have been taking this for 6 months now. Before these medicines, I had problems gaining weight. Now that I am on this medicine, I can't stop eating. I have gained 20 lbs. When I stop taking these medicines, I am not hungry all the time. I also have high blood pressure. Not sure if the combination of the medicines has anything to do with the weight gain."
- Batty
- January 3, 2018
"Thyroidectomy after cancer diagnosis, and so far I've had not had great luck with Synthroid. Currently, I'm on 112 mcg, and it makes me feel like I have an itchy sunburn. The weight gain is insane, I feel waterlogged in my legs most of the time and have too many mental glitches. I dislike this drug, it has too many fillers that cause other issues. If you have known allergies, avoid Synthroid until they can create an allergy-free version."
Are you taking this medicine?
- Anonymous
- May 30, 2011
"I have been taking Synthroid for almost two years. My doctor told me that I might not be able to conceive, but I am 15 weeks pregnant. My current doctor told me to take this medicine religiously because this is keeping me pregnant."
- xdoll
- Taken for 10 years or more
- January 16, 2022
"I’ve been on this medication since I was 7, and I am now 32. Never had any issues that I can relate back to synthroid. But I’m curious if my anxiety and panic disorder is related to this, because I have had it since around the same time I started this med and suffered my whole life. I also recently started having chronic dizziness that is pretty much 24/7 for the last 5 years. It’s probably not related but I’m curious if anyone else feels the same."
More FAQ
- Armour Thyroid vs. Synthroid - How do they compare?
- How do I treat Hypothyroidism?
- Does levothyroxine cause weight gain or loss?
- What can I eat for breakfast after taking levothyroxine?
- dvdbr...
- July 19, 2016
"I'm hypothyroid and skinny as a rail and cannot even gain a single pound, 58 yo, 5'6" 88 lbs, thyroid damaged through radiation, have been on synthroid/levothyroxin 50 mcg daily, and I notice no change at all, still no energy, still totally exhaust 24/7,still losing weight like crazy with a relatively healthy appetite. However, since I totally trust my oncologist, I keep taking them."
- Anonymous
- May 20, 2010
"OK, I'm still on Synthroid, and my doctor will not listen to me. He told me to see an OB/GYN, and they made me an appointment, but I have to wait another two weeks, and my menstruation has gone crazy. I've been bleeding since April 15. I stopped for 2 days, and it started again. All my tests say I'm normal. I went to the ER, and they told me everything was fine! I'm so frustrated with this. No one will listen to me!! It takes 4-6 weeks to kick in. I started this medicine in November, I've had my dosage changed 3 times. This last time, I went from .75 to .88, and exactly 6 weeks and one day my menstruation started early. I thought that was just a slight bump, but now it's out of control! I know my own body, I know it's this medicine. I'm sensitive to medications."
- Jujub...
- Taken for 2 to 5 years
- October 27, 2017
"I've been on both and yes you have to see a Dr. who specializes in this disorder and you also have to take it one hour before you eat both levo and synthroid because I feel different I've done it taking after I ate and didn't work and then I followed the doctors orders take one hour before breakfast. I'm on 75mcg and my weight is doing great my levels normal if I keep on the medicine and take it like my doctor said to take it and I go to many different specialist's because I have many medical problems and I'm only 30 but this thyroid be thing started after I had my daughter so no do not take it at night after meals cuz your body will not absorb the medicine correct the medicine needs to be with a full glass of water and no food so it can work thru"
- Just...
- Taken for less than 1 month
- May 1, 2015
"I had a blood test 3 weeks ago and I knew something was wrong. The doctor prescribed this to me. I don't know my numbers. I'm taking 25 mcg. I was tired before but now I feel like I'm dead. Too bad you can't take this medicine at night. I never had a puffy face, but the cold bothered me a little . Very dry skin that developed over the winter. I used to have Addison's Disease, which was easier to check with a simple prick of the finger."
- NoSle...
- Taken for 1 to 2 years
- July 12, 2021
"I've been on levothyroxine for a year now and my life is so much better. When I graduated college at 21 and started working full-time, I was suddenly tired. All the time. Basic tasks made me exhausted. I always thought it was depression and tried counseling for years. I finally went to the doctor when I was 25 to get antidepressants and she made me get bloodwork done. I had an atrophied thyroid! After about six weeks on levo, I had so much energy and even lost 10 pounds! Then it stopped working, so we had to adjust the dosage. I haven't had any long-term weight loss unfortunately, but my energy is back up and I wake up refreshed, which is exactly what I needed."
- Kimroid
- Taken for 1 to 6 months
- July 6, 2021
"I have been taking random dosage of levothyroxine for 1 year now and my endocrinologist and I still haven’t found my perfect dose. I switched over to synthroid at 125 MCG and I’ve been on it for about 2 weeks now. I know it takes about 4-6 weeks to hit its peek. But I am just so impatient and tired of it not being my proper dose. I’m 27yrs and my left eyebrow hairs started to turn white and by bottom lashes are all white and now my top lashes are starting to turn white too. It’s very concerning I was told it’s from my autoimmune disorder. Is anyone else going through this?"
- pmccall
- March 23, 2009
"I've been taking Synthroid for 3 years now. It was hard to reach the right dosage since I used to take Puran T4 (not marketed in the USA) 75 mg and had to adjust the Synthroid to 100 mg instead. I've been feeling great since!"
- works...
- Taken for 10 years or more
- September 19, 2023
"I have my hair, eyebrows, and lashes. I retain water. I feel tired often, but I sleep fine. Mood is stable. Weight is about 10 lbs over where I'd like to be, but not bad. Without this medication, I would feel way worse. I've been on it for 20 years. It's not perfect, but I can't live without it."
- Luvro...
- Taken for 10 years or more
- July 23, 2017
"I've been taking this medication for years. It works very well in keeping my thyroid under control. I can always tell when I don't take it right especially when my blood is tested. I have learned that I need to take this medication in the mornings, because that is when it works its best."
- Anonymous
- November 7, 2009
"I am a type l diabetic 45yrs of age. I have been on Synthroid for several years (now about 13) since I became a diabetic. I had a hysterectomy two years ago. I have been on Vivelle patches, Estradol, Premarin and for the longest Enjuvia and just recently changed to Estragel. For the last six months I have been experiencing lifeless hair, breaking off. I have never experienced anything like this. I am very frustrated."
- Aves
- Taken for 1 to 6 months
- October 27, 2022
"I’ve been on this medication for a month. 50mcg. It makes me so tired I can barely stay awake to work during the day. It makes it very hard to concentrate. I didn’t have fatigue or brain fog before starting this medicine. It has improved my joint pains, itching, and the ringing in my ears."
- Anonymous
- January 28, 2023
"I was on Synthroid for four weeks after I had a prothrombin time (PT) test. I didn't notice much change until week four and I developed pretty severe heart palpitations that I'm still getting on and off. My anxiety increased, and I had brain fog, bloating, and weight gain. I have been off of it for a week and my numbers are double what they were prior to starting it."
- M L
- Taken for 6 months to 1 year
- November 9, 2021
"By far, the best T4 brand. I was first diagnosed with hypothyroidism whilst in Germany. There, I was given Euthyrox - which was absolutely terrible. So terrible, that I decided it was better to stop taking the drug and face all the symptoms of hypothyroidism. It's worth mentioning that a class action suit against Merck, the German laboratory responsible for Euthyrox, was successful in France. Now, back home, my endocrinologist changed my medication to Synthroid (same active substance, different brand) and she also told me that many patients had faced the same thing while on Euthyrox. It's been a bit more than 6 months and I'm feeling absolutely fantastic. Depression is gone, hair loss is gone, lost tons of weight. Recently, had my dosage reduced from 200mcg to 175mcg. I take it systematically every day right after waking up on an empty stomach. Really changed my life. + I'm also taking Wellbutrin XL 300mg (for 7 years now) and cholecalciferol. No interactions or heart palpitation."
- Blues...
- Taken for 10 years or more
- July 21, 2021
"With my bloating, I also read that Synthroid might affect my intestines and cause me to not absorb Vitamin to the fullest extent and this might cause bloating. I now take 1000 IU vitamins twice a day. My bloating is much, much better."
- annie
- Taken for 6 months to 1 year
- April 21, 2023
"I had a thyroidectomy after Hashimotos for 20 years. I was on Synthroid for a year. Had severe joint pain, and swelling in throat and abdomen (edema). I'm someone who never sweats but on this med that's all I did. Everyone said it was menopause but since I switched to Levoxyl that has stopped. Couldn't lose any of the 60lbs I gained last year. It did get me to euthyroid but I didn't feel it. Just started so I hope Levoxyl will help me fit into my size 8s again."
- Dubble...
- Taken for 6 months to 1 year
- January 26, 2015
"It's official! My levels are normal and my hair is no longer falling out. Joint pain is also gone."
- Fairy...
- December 30, 2008
"I've been on Synthroid for two years now and have found that once you are on the right dosage, it's brilliant. Just be patient at the beginning."
- Shahid...
- July 14, 2013
"I am taking Synthroid 0.05 mg (50 mcg). Helps me a lot. Very effective in my case."
Reviews may be edited to correct grammar/spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest are not published. This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge, and judgement of healthcare professionals.
Learn more about Underactive Thyroid
Care guides
- Acquired Hypothyroidism in Children
- Congenital Hypothyroidism in Children
- Hypothyroidism
- Hypothyroidism in Pregnancy
- Induced Thyroid Disorders
- Subclinical Hyperthyroidism
- Subclinical Hypothyroidism
Symptoms and treatments
Medicine.com guides (external)
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"I was put on Synthroid 1 year after telling my endocrinologist (he was taking care of my type 1 diabetes) that I think I have low thyroid (it runs in my family). After a year, he finally tested my TSH, which was high, and put me on Synthroid. My TSH came back fine, but I told him my hair was still thinning, my nails were still brittle, my stomach was still swollen, and I got every bug that was within 100 miles. I also developed total exhaustion and only left the house for doctor appointments. I went from 103 lbs. to 130 lbs. He put me on a higher dose and switched me to Levothyroxine (generic for Synthroid), which caused a rash and itching on my face, then on the rest of my body, it felt like a ball in my throat. Changing doctors now."