Synthroid versus levothyroxine

Common Questions and Answers about Synthroid versus levothyroxine

synthroid

Her husband is a pharmacist, and he says their is a difference between <span style = 'background-color: #dae8f4'>synthroid</span> and <span style = 'background-color: #dae8f4'>levothyroxine</span>, and insists that she stay on <span style = 'background-color: #dae8f4'>levothyroxine</span>. Is there that much difference between the two? I would think that if you are on one or the other nad stay with it, it shouldn't matter.
I'm currently on levothyroxine and am wondering if synthroid is a better alternate.. Has anyone found out that <span style = 'background-color: #dae8f4'>synthroid</span> was better than <span style = 'background-color: #dae8f4'>levothyroxine</span>? <span style = 'background-color: #dae8f4'>synthroid</span> is more expensive so I really need to know whether it is right choice.. The only side-effects I am getting are occasional light headness and dizziness, which may or not be due to the thyroid meds....
<span style = 'background-color: #dae8f4'>levothyroxine</span> is the generic form of <span style = 'background-color: #dae8f4'>synthroid</span>. Both are synthetic, so price is probably the deciding factor. Many doctors don't like to use the generic because of concerns over variations in the amount of medication in them versus the stated amount. Supposedly, the brand names are much more consistent. However, whether this is true or Big Pharma just ran a very successful smear campaign against their competition is open to discussion. The medication in both synthroid and levo is the same.
All synthroid is levothyroxine sodium, but not all levothyroxine sodium is synthroid. There are several "brands" of levothyroxine sodium... synthroid and Levoxyl are the 2 main ones. Then there are also several manufacturers of generic levothyroxine sodium. All manufacturers are allowed a certain "tolerance", meaning their products can vary by a certain amount. Some argue that generics are not as good as brand names.
Levothyroxin is not listed in the pharmacuidical referrences I have looked at, except for a German one. <span style = 'background-color: #dae8f4'>levothyroxine</span> is listed as the generic form of <span style = 'background-color: #dae8f4'>synthroid</span>, Levoxyl, etc. The missing e on the end may be a typo or may be how a particular manufacturer markets their generic levothyroxine.
My guess is that it's your increase that has caused the PVCs, not the generic versus <span style = 'background-color: #dae8f4'>synthroid</span>. I say this because you said you did fine on the generic for four years, so what changed was the dose, not the medication, when the PVCs started. I just couldn't tolerate levo without the beta blockers.
I have seen 2 or 3 papers where people taking <span style = 'background-color: #dae8f4'>synthroid</span> only have tested taking morning versus night and they do equally well either way. In fact taking at night gets slightly more absorption – but you have to make sure not to eat/drink anything except water for a couple of hours before bedtime. Of course an advantage of taking it at night is you can get up in the morning and eat/drink right away. As you suggest, it might work out good to compound the T4/T3 together – extended release though.
I started out on 25mcg <span style = 'background-color: #dae8f4'>levothyroxine</span>. Felt great about the 2nd month in, after the 3rd mo, I started feeling as exhausted as before. Had blood work done again and the Endo doc said my #was still a little lower than she'd like, so she put me on 50mcg Levo. I feel no better whatsoever. Pathetically drained, no energy, always tired, and NOW I am experiencing large amounts of hair being shedded in the shower especially. It is disturbing how much is lost in the shower.
my 17 year old daughter with Graves Disease since diagnosed Feb. 2007. She is currently taking 30 mg. of methimazole and .075 mg. of <span style = 'background-color: #dae8f4'>levothyroxine</span> per day. The endocrine clinic says that her thyroid levels are slowly getting closer to normal. We took her out of school in Feb. due to severe anxiety and some depression related to Graves, and she has been doing a bit of homework through a homebound tutor. Last month the endo.
You should stick with one or the other and make sure that you are given that always. I started on levothyroxine and Cytomel then changed to Synthorid. I personnally had issues on synthroid and have since moved to Levoxyl. There can be differences and potiency issues between meds, and switching all the time can be problematic to some.
Hi, I have had Hashimoto's for years and seem to be having a sudden sensitivity/intolerance to <span style = 'background-color: #dae8f4'>synthroid</span>. This developed since my hyperthyroid bout last spring and swing back to hypothyroidism. Every time I increase my dose, I experience horrible hyper symptoms including sleep difficulties, heart palpitations and tearfulness. However, the dilemma is that if I don't increase the dose, the hypothyroid symptoms persist. My TSH is slightly below 3 and the target is 1.
In a randomized trial comparing PEI and TSH-suppressive doses of levothyroxine, significantly greater nodule shrinkage 12 months after treatment was found in the 25 patients treated with PEI (reductions of 47% with PEI versus 9% with <span style = 'background-color: #dae8f4'>levothyroxine</span>).[73] The same authors later compared two groups of 30 patients who had small, solid nodules (mean volumes 9.9 ml and 9.4 ml, respectively). The first group was treated with a single PEI whereas three injections were administered in the second group.
I do not know what my exact numbers are but I had A ENT Dr. that removed the side of thyroid that had a benign tumor. He said I would probably never have to take synthroid, then I had a lot of bad episodes of crying alot waking up scared in the middle of the night and heart palpitations and scared I was dying. He ran a blood test and gave me 150 mcg of the generic, he did bloodwork like 3 weeks later and lowered it to 100mcg,told me to go back to work and did not want to see me until Nov. 28.
I was wondering how long after ceasing to take <span style = 'background-color: #dae8f4'>synthroid</span> does it leave your system. I had been taking 150's up until 3 weeks ago. When I originally started taking synthroid I had a TSH of over 6.0. My doctor started me on 50's then 100's then 150's increasing over several months. I decided to go to an Endocrinologist after not feeling any better. He took me off synthroid because he wanted to get blood tests done again to see where my TSH and T4 levels stood without synthroid.
My endo isn't helping me as I pour out my heart to him, explaining my symptoms (all hypo and then some), while on <span style = 'background-color: #dae8f4'>synthroid</span> (alone). I have received many comments and advice from people on this site and I have done research (via books and online) as well in order to educate myself on my condition. I understand that Armour Thyroid is basically obselete but there are lots of people who do well on it verses just a T4 med (synthroid).
Also, is there a difference between levothyroxine and <span style = 'background-color: #dae8f4'>synthroid</span> other than formula versus generic cause I have heard <span style = 'background-color: #dae8f4'>synthroid</span> works better than <span style = 'background-color: #dae8f4'>levothyroxine</span>. Any information would be appreciated.
It is <span style = 'background-color: #dae8f4'>levothyroxine</span> which is just like <span style = 'background-color: #dae8f4'>synthroid</span>....it is made in Mexico. Is there a reason why you are asking?
When I was tested, my PCP called me at home and changed my meds back to <span style = 'background-color: #dae8f4'>synthroid</span> on the spot. How do you feel about synthetic replacement versus natural replacement? Any time I mention a symptom to my doctor, I feel like he honestly thinks that I am a hypochondriac so I hate to even go in and see him---other docs do the same as well. I am a reasonably healthy 50 year old woman who just wants to feel good again. I know I can if I can just convince a doctor to really listen to me.
so he looked and said this is not the same medicine I said WHAT...so we went back the pharmacist that <span style = 'background-color: #dae8f4'>synthroid</span> is $25.00 the <span style = 'background-color: #dae8f4'>levothyroxine</span> is $5.00 and right now that is a big difference for me with no job. I asked her all kinds of questions. She said yes normally you should stay on the same med's continously however, since i have really just started and the fact the doctor was changing the dosage it really should not matter.
THIS is what <span style = 'background-color: #dae8f4'>levothyroxine</span> does to ME. The first day in which I dropped <span style = 'background-color: #dae8f4'>synthroid</span> down to 6.25 (the lowest dose yet), as quickly as the symptoms above had come on, they ceased that quickly. I've even been able to raise Naturethroid from 30 mg to 37.5 mg with no profound symptoms whatsoever. That's not to say I have NO symptoms. I guess now I have what would be appropriately be called "typical" hypothyroid symptoms, i.e.
As a physician managing 100's of thyroid patients, I really don't feel that <span style = 'background-color: #dae8f4'>levothyroxine</span> or <span style = 'background-color: #dae8f4'>synthroid</span> is a very good choice. I think <span style = 'background-color: #dae8f4'>synthroid</span> is a great medication if you are under no stress....please find that person for me. Your body only has T3 receptors on the organs, and essentially no T4 receptors. So to work properly inactive T4 has to be activated to T3. Otherwise it has absolutely no benefit.
Do I need to be concerned with generic versus brand name <span style = 'background-color: #dae8f4'>levothyroxine</span>? At my age and this level of <span style = 'background-color: #dae8f4'>levothyroxine</span> is hair loss still a side effect?
Take your meds every day as close to the same time as possible don't eat 30 mins before or an hr after for best absorption and make sure your levels are checked regularly. If you can look into natural meds versus <span style = 'background-color: #dae8f4'>synthroid</span> or levo.
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