SYNTHROID Reviews (LEVOTHYROXINE SODIUM)

Average Rating: 2.6 (900 Ratings)

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 THYROID ANTITHYROID

 Type: Rx Drug

  

SYNTHROID  (LEVOTHYROXINE SODIUM):  Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. This medication is also used to treat other types of thyroid disorders (such as certain types of goiters, thyroid cancer). This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels.   FDA Approval Date: 2002-07-24 (Sources: U.S. Centers for Medicare Services, FDA)

  

Results are sorted by Gender with females listed first (reviews with no gender reported listed before females).

Key to Ratings: 1=LOW (I would not recommend taking this medicine.)
5=HIGH (this medicine cured me or helped me a great deal.)

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More on SYNTHROID: Reviews Summary  |  Drug Safety Information

RATING  REASONSIDE EFFECTS FOR SYNTHROIDCOMMENTSSEXAGEDURATION/
DOSAGE
DATE ADDED
 
 4  hypothyroidism Weight loss, headache, nausea I have had a partial thyroidectomy and have been taking synthroid ever since. I have noticed about a 20lb weight loss without trying and an increased appetite. I have also had pretty bad headaches every now and then. Overall I am satisfied with this drug but it does come with side-effects for me. F 28 3 years
150mcg 1X day
3/19/2011
 4  Thyroidectomy due to cancer In the beginning i was on a higher dose and had palpitations. Have been on current dose for about 19 years without a problem. Recently my TSH levels have increased and my dosage was increased but my levels are not optimum. At this time my dosage change is ongoing. I have not had any problems with hair loss until recently F 58 22 years
125 mcg 1X day
5/13/2011
Email
 4  Thyroid cancer - complete removal Only thing is some chest tighness. However i will take that over the thyroid cancer n hashimoto sx! If u are losing hair, have joint pain or stiff muscles, fogging thinking, extreme tiredness, pins n needles in hands and feet- low b12 levels... probably not this med. You may have thryoid cancer and not just a thyroid problem. Demand an sonogram/ ultra sound of your thyroid. I saved my sisters life this way. They said no need for sonogram...just has underactive thyroid...demanded it- saw lump- biopsied and cancer. 5 years later found my own cancer as well. Its not the meds...its your thyroid. Please get it checked. DL F 35 4 months
125 1X day
5/15/2011
 4  hypothyroidism/goiter some racing heart loss of hair due to too much By the time I could get anyone to diagnose me I was feelin' pretty ill. After a week or 2 I felt great! I had read some horror stories but as with all meds it can vary from person to person. I experienced some hair loss and racing heart/palpitation but my TSH was at .02 so I was on too much medicine at .075mcgs. Now on .050 and feel great!! F 34 3 months
5/2/2006
 4  thyroidectomy can't distinguish yeat what is from med and what is from natural repsonse to healing from thyroidectomy F 42 1 years
6/8/2006
 4  somewhat Hypo-T. Nothing that really stands out. Currently on half of a 112-MCG pill a day. So far, so good. The first day I was on this, I went out for a good long walk and didn't feel taxed or otherwise unwell other than a headache (which I took Excedrin for, knocked it right out.) Will update later if there are any negative side-effects. F 31 3 days
56 MCG 1X day
7/1/2013
Email
 4  Hypothyroid for the past 6 months I have been feeling hot flashes right before I am due to take my medicine in the morning. F 31 2 years
75mcg 1X day
3/5/2013
Email
 4  Hypothyroidism depression, difficulty concentrating, short term memory loss, extreme fatigue I am still in the dosing process, I have had side effects such as temporary skin rashes when upping the dose from .025 to .05, control blood tests are being done every 3-4 weeks and no sign of stability yet but the medication is obviously already helping me living a better life. I am up to .075 and waiting for blood tests results. No matter what the results, I feel 500% better than I did in the last few years, especially mentally! Other symptoms tobe attributed to the medication possibly the need to sleep 8 hrs/day. Possibly also temporary dizziness when changing dosage (blood pressure low). Physically, I have always maintained a high level of activity, a way to keep my mental going over the years. F 38 5 months
9/23/2005
Email
 4  Hypothyroidism For the last few years, I had heavy (I mean HEAVY) periods. Since starting the medication, it is back to 'normal'! No need to go to the bathroom every 30 minutes and get up every hour in the night to avoid a disaster :) and the abdominal pain is nothing compared to what it was. What a relief! F 38 5 months
9/23/2005
Email
 4  thyroid removed most of my side effects were because the dosage was too high, but they included sweating, rapid heart beat, jitteriness and when it was too low i was just constantly exhausted. I have also been getting leg cramps, which could be related to low calcium levels. my docs are still finetuning my meds, was told it could take up to a year to find the right dosage F 22 5 months
11/12/2006
Email
 4  Hashimoto's Thyroditis/Hypothyroid Muscle cramping in feet and forearms. (Not sure if related) Late periods. (not sure if related) This drug definately cured the depression I was feeling. I started feeling like my old self within 2 weeks. The Dr. is still adjusting the meds to get my thyroid to where it is supposed to be, but I already feel better after 5 weeks. F 31 5 weeks
2/6/2006
 4  hashimotos hypothyroidism light sensitivity I had gained about 15 pounds and couldn't lose it. I would go to the doctor and get the, "Exercise more, eat less.", routine. Finally, my OB checked my thyroid after I begged him to. My TSH level was 77.07. No wonder I was tired. My endocrinologist put me on Synthroid, gradually increasing my dosage to the 137 I am at today. I still don't feel as good as I did before the onset of my problems. However, I am grateful to have this to take. I can not imagine living everyday as fatigued and cloudy as I was before starting Synthroid. It is a worthwhile improvement. Also, I have never lost the weight I gained. F 38 5 years
10/6/2005
 4  Hypothyroidism ?? I have been on it for most of my life, I was 14 when diagnosed . I take 300 mcg a day. have 4 normal kids..I am 38 now. Take your med EVERY day and in the morning before you eat.. all it does is replace thyroid hormone... The only problems are when you either don't have enough...or too much..which can be determined by a blood test. F 38 24 years
10/1/2009
 4  Thyroidectomy Overheating at night, unable to sleep, thinning of hair, irritability, fatigue, over-emotional, night terrors When my levels are accurate, Synthroid works wonders. If I miss a few doses or if my levels are off, or if I take the generic brands, the side effects kick in. F 27 13 years
6/16/2009
Email
 4  low throid I seem to be a "happier" person with it. Never had low test results but suffered from on and off again depression. It has been healthful but am worried about long term use. F 58 1 years
8/31/2008
 4  Hypothyroidism I experience some hair loss and general anxiety. You know i keep asking my doctor if there could be a link between my anxiety and my thyroid meds and she is sure there isn't. I just can't imagine there being so many of us with the same problem yet no link established by the medical community. I get bloodwork done every 9 months and my numbers are normal. I distinctly remember my anxiety presenting itself shortly after i began the meds 5 years ago. It doesn't make sense to me. F 47 5 years
9/11/2008
 4  hypothyroidism very bad arrhythmia or tachycardia when it's not dosed exactly right. too much synthroid makes me feel like I am going out of my mind with anxiety, agitation, irritablity, sleeplessness, and heart palpitations. F 39 8 years
8/26/2008
 4  Hypothyroidism / Hashimoto's No side effects I have been taking synthroid for about 6 months now. I just had my bloodwork checked again and my doc tested my antibodies this time. She diagnosed me with Hashimoto's Thyroiditis. I have heard that soy products can aggrevate the thyroid. I am vegan and regularly consume soy products. Does anyone have any information on this??? F 34 6 months
3/17/2009
Email
 4  thyroid cancer/thyroidectomy Low energy, difficulty concentrating After being diagnosed with papillary thyroid cancer at age 33, I had a total thyroidectomy and began taking Synthroid. My levels have been adjusted and I feel pretty good most of the time. My doctor has me take 112mcg one day and 125mcg the next because one is too little and the other too much! It is imperative that you find a doctor to listen to your symptoms instead of simply monitoring your blood levels. My endo said two important things - you must use brand over generic because generic brands are unregulated. Meaning, there could be different (slightly) levels of levothyroxine in each tablet. Those swings in dosage can really throw you off. Second, when treating cancer, it is important to keep me slightly hyperthyroid. This will keep whatever remaining thyroid cells inactive. We don't want our cancerous cells to work harder and generate more cancer cells! F 37 4 years
2/3/2009
 4  Hypothyroidism When TSH gets too low: fatigue, thirst, anxiety, brain fog. (I've learned these symptoms are indicators to do bloodwork.) Otherwise, I feel great! I decided to post because toward the bottom of the page someone alleged that Synthroid was not approved by the FDA. That remark is actually a fallacy; Synthroid was approved by the FDA on July 24, 2002. You can view the approval history and other information about Synthroid. Here is the direct link to http://www.accessdata.fda.gov/ F 27
3/31/2008

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