t4

  1. Soren

    Can Thyroid Medication Cause Swollen Lymph Nodes?

    Does anyone know if thyroid medication can cause swelling of the lymph nodes? I would assume that it can as too much can cause the swelling of the thyroid and that thyroid hormone helps produce white blood cells and the white blood cells are produced in the lymph nodes so that supplementing...
  2. thingsvarious

    I Have Tried It All: T4, T3-only, T3/T4-combo, NDT. Here I Share What I Learned

    I am a med student in my last year. For years I have been replacing multiple of my hormones. Thyroid was the first hormone I started to replace. I have tried it all: T4, T3-only, T3/T4-combo, NDT. Here I share what I learned. Because there is just so much misinformation around, I wrote guides...
  3. P

    Anyone Have Experience With Everylywell At-home Thyroid Test?

    Just learned about this at-home thyroid test for $99 ... At Home Thyroid Levels Test - Easy to Use and Understand - Everlywell Fingerstics and blood dots on a card are sent back to the lab for analysis. Looks like they only report Free T3, T4 and TSH. No rT3 or other markers. The report...
  4. L

    T4 Causes Sleep Problems At Nights?

    I have read that it should actually improve sleep, and make you relaxed and sleepy but me and another person I give the t4 both experience insomnia or only a few hours of sleep in total, with tossing and turning, when we take it in the evenings. The dose is 25 mcg. Has anybody else experienced...
  5. M

    Help With T3, T4 And Weird Lab Results

    Hello everyone, I have been following this forum for a while. Two years ago, I had blood exams done and my TSH resulted to be 4.27 but my primary care physician refused to treat me with supplementary T3 and T4, because according to the lab the normal range for TSH...
  6. Tristan Loscha

    Deiodinase & RT3:Seldom Mentioned Diagnostic Edge Cases That Matter

    A member posted this valueable study in a low visibility thread,its a review of the evidence of mistakes in Endocrinological Assessment of Thyroid Function.It is noted that even thorough analysis of the known measurable Parameters leaves a high amount of uncertainty of true availability of...
  7. haidut

    Levothyroxine (T4) Monotherapy Often Ineffective For Hypothyroidism

    As most of my readers know, the currently approved therapy for hypothyroidism is levothyroxine (T4). While technically T3 and combined T4/T3 therapy are also approved by FDA, the former is only used in severe cases of myxedema and the latter is considered obsolete and a remnant of the days when...
  8. GutFeeling

    Autism Four Times Likelier When Mother's Thyroid Is Weakened

    Pregnant women who don't make nearly enough thyroid hormone are nearly 4 times likelier to produce autistic children than healthy women. The association emerged from a study of more than 4,000 Dutch mothers and their children, and it supports a growing view that autism spectrum disorders can be...
  9. haidut

    Virtually All Patients With Depression Are Hypothyroid

    It does not get much better than what this study found. More than 2/3 of mildly depressed patients and basically all moderately and severely depressed ones has low T3 levels. TSH was elevated in almost 55% of the patients. As the study says, this widespread prevalence of sub-clinical...
  10. haidut

    Biotin Can Actually Raise T4 And Lower TSH

    A few users ( @aguilaroja ) posted recent case studies showing that biotin in doses as "low" as 10mg daily can interfere with lab test results and produce false positives for a number of conditions. Perhaps the most widely publicized interference is related to thyroid lab tests. Several people...
  11. D

    Effect Of Vitamin C On The Absorption Of Levothyroxine

    The following study with Vitamin C and Hypothyroid persons taking Levothyroxine is interesting. Coupled with the study posted about Vitamin A in 25,000IU doses daily decreasing TSH, it makes me wonder why a person has to be on thyroid meds. Or, why begin with thyroid meds or increase thyroid...
  12. P

    Effect Of Thyroid Supplementation On Testosterone And SHBG In Normal And Hypothyroid Persons

    Serum levels of total testosterone and sex hormone binding globulin in hypothyroid patients and normal subjects treated with incremental doses of L... - PubMed - NCBI Plasma testosterone (T) and sex hormone binding globulin (SHBG) were assayed in normal controls (N = 9) and hypothyroid...
  13. Dan Wich

    T4 Treatment In "subclinical" Hypothyroid In People Age 65+

    I'd be curious to hear from others on this because the results surprised me: Thyroid Hormone Therapy for Older Adults with Subclinical Hypothyroidism My oversimplified, probably incorrect summary: bunch of people over the age of 65 with high TSH (and free T4 within the reference range) given...
  14. P

    Serum Thyroid Hormone Changes(negatively) During Whole Body Hyperthermia

    its similar to sauna,isnt it?or even hot tube! Serum thyroid hormone changes during whole body hyperthermia. - PubMed - NCBI In order to elucidate changes in thyroid hormone metabolism during acute heat stress, we measured sequentially serum thyroxine (T4), triiothyronine (T3), and reverse T3...
  15. haidut

    TyroMix - Liquid T3/T4 Mix For Lab/R&D

    I am pleased to announce the release of TyroMix - a combination of synthetic T3/T4 hormones dissolved in SFA esters and ethanol. The naturally found concentrations in the thyroid gland of animals of T4 and T3 are usually in a ratio of 4:1 or 5:1 and this ratio is most commonly found in NDT...
  16. DaveFoster

    T4 Raises ACTH And Cortisol

    Thyroid hormone action on ACTH secretion. - PubMed - NCBI "Thyroid hormone effects on pituitary ACTH have not been well established. Adult male Sprague-Dawley rats were rendered hypo- and hyperthyroid while undergoing treatment with 6-Propylthiouracil (PTU) and L-Thyroxine (T4). At the time of...
  17. Y

    25 mcg? 50? Effective Levothyroxine doses are 200 to 400 mcg

    I keep on reading reports that large thyroid dosages are required. This is specially true on old reports long before TSH tests were available so they focused mostly on symptoms and body temperature. Are 200 mcg the absolute minimum to feel completely well? Could modern insufficient 25 or 50...
  18. Y

    How much more Levothyroxine to bring Free T3/T4 into the upper third of the range?

    Right now I'm taking 50 mcg of Levothyroxine every day. Free T3 and T4 are at about half of the normal range yet I feel like this isn't enough for me as I feel many HYPOthyroid symptoms like cold hands and feet, extreme fatigue, slow digestion. If I want to get Free T3 and Free T4 in the...
  19. Daimyo

    Dextrothyroxine, Levothyroxine, Tyroxine confusion

    Most synthetic T4 meds contain Levothyroxine, which is an isomer of Tyroxine. But is Tyoxine the same as Dextrothyroxine? Is T4 produced by human thyroid gland a mix of Levothyroxine and Dextrothyroxine? Why manufacturers does not produce "Tyroxine" instead of Levothyroxine?
  20. goodandevil

    Synthroid T4 Toxicity?

    Hi, I feel good on synthroid; I take a very low dose- maybe 6 mcg. Im on cypro as well. I bave some strange symptoms, primarily dizziness, perhaps a little weakness, and maybe vision trouble and a blurry left eye, which is astigmatic. Overall, im feeling much better emotionally, but im...
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