posted
As the title says, im feeling that im hypothyroid because of the antibiotics. Im currently taking ERFA thyroid. Doxy and Diflucan is the combo my doc put me on... Ever since i started Doxy/Diflu i felt more cold, now its very clear that i get hypothyroid from it because i take even more ERFA and i still feel very cold in the evening.
Did someone else experience this? I know Dr.Herthoge claims that antibiotics are not good iff you supplement hormones because they seem to "block" them... i dont know if this is true, all i know is i feel hypo.
Posts: 141 | From cali | Registered: Nov 2012
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posted
Yup!! I found it harder to regulate my thyroid on the abx. I had to raise my thyroid meds and also add cytomel several times a day.
Never heard that abx blocks hormones though. I find you have to compensate sometimes with raising the dose but once off abx, you may be able to reduce your dose.
-------------------- Faithful
Just sharing my experience, I am not a doctor. Posts: 2682 | From Colorado | Registered: Oct 2009
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I was off antibiotics for six months and still couldn't get my thyroid levels to optimal level.
Posts: 287 | From somewhere | Registered: Oct 2011
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posted
they seem to interact with the hormones somehow. maybe it has to do with inflammation i dont know. its really weird. buffy what do you mean? have you tryed T3 ?
Posts: 141 | From cali | Registered: Nov 2012
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emla999/Lyme
Frequent Contributor (1K+ posts)
Member # 12606
posted
Yes, certain antibiotics are known to alter thyroid hormone production. Some antibiotics can potentially lower thyroid hormone production. While other antibiotics can potentially increase thyroid hormone production.
The antibiotic Ciprofloxacin has been shown to significantly increase the production of T3 and T4 thyroid hormones...... at least in rats it has. And Ciprofloxacin's ability to increase the production of thyroid hormones was increased by taking certain vitamins concurrently with Ciprofloxacin.
But on the other hand the antibiotic Ciprofloxacin may also inhibit the absorption of thyroid medication when oral thyroid medication is taken at the same time as Ciprofloxacin.
"After release from the thyroid gland both T4 and T3 are bound to the transport proteins in the blood. So does Synthroid, a synthetic T4. Approximately 99% of the circulating thyroid hormones are bound to the blood proteins. Only 1% of thyroid hormones is unbound. Only unbound thyroid hormones are biologically active.
The protein bound hormons are inactive. Most of the thyroid hormones are bound to the thyroid-binding globulin (TBG), a special carrier protein for T3/T4. A smaller fraction of the thyroid hormones is bound to different blood proteins, such as prealbumin and albumin. Many antibiotics are also bounded (attached) to albumin and other transport proteins in the blood.
Therefore, antibiotics compete with thyroid hormones for the same transport proteins (i.e. albumin). When antibiotics get into the blood, some amount of the thyroid hormones (or Synthroid) may detach from the albumin and become biologically active, causing HYPERthyroid symptoms. So, the more antibiotic binds to the serum proteins, the more thyroid hormons may become unbound and active.
So, the more antibiotic binds to the serum proteins, the more thyroid hormones may become unbound and active. "
So, when someone takes an antibiotic and they feel worse (or better) it may not always be due to the killing off of bacteria in the body but it may be due to the changes that antibiotics can potentially have on thyroid hormone production.
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