WOMENS-HEALTH Messages for March, 1998: Re: levoxyl and estrogen

Re: levoxyl and estrogen

From: Harvey S. Marchbein, M.D. (anonymous@obgyn.net)
Sun, 22 Mar 1998 14:18:40 -0600 (CST)

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In reply to: cathy: "levoxyl and estrogen"

At Sun, 22 Mar 1998, cathy wrote: >
>I have had hypothyroidism for 14 years and currently take .75 mg levoxyl
>(just reduced 2 wks ago from .137 mg due to TSH levels on current blood
>work).

I think you mean your dose went down to 0.075mg.

>I had total hysterectomy 4 weeks ago and am taking .625 mg
>Premarin. I just found out "sweats" I have experienced off and on for
>in excess of 10 yrs may have been because of prolactin levels being off

"Sweats" associated with prolactin is actually associated with the abnormality that aberrant prolactin causes with thyroid function tests. Prolactin abnormalities can cause abnormalities of TSH (thyroid stimulating hormone) from the pituitary gland and thereby, abnormalities of the thyroid. If Thyroid replacement is given, symptoms should be controlled.

>( I just always blamed this symptom on my thyroid). I am 45 yrs old.
>Previous blood work for FSH was always normal. Will I still produce
>prolactin now?

Prolactin is produced normally.

>What is interaction (if any) between levoxyl and
>estrogen?

Sex hormones affect albumin levels which bind other chemicals. One such albumin molecule binds thyroid hormones. Depending upon estrogen levels, thyroid levels in blood can be altered (although they may act unaltered). The exception is TSH. This is not affected by estrogen or estrogen therapy.

>Other than blood work how will I know if "sweats" are due to thyroid,
>prolactin levels or low estrogen levels?

TSH, serum Prolactin and Estradiol levels are needed to make a diagnosis.

--
Harvey S. Marchbein, M.D. FACOG
OBGYN.net U.S. Representative, New York
Great Neck, New York
http://www.obgyn.net/states/bios/marchbein.htm
http://www.obgyn.net/women/advisors/harveym.htm

**Note:  Opinions expressed here are for educational purposes only
and, as such, do not constitute a physician-patient relationship.
This information is not intended to supplant the need for you to
consult with your physician prior to choosing therapeutic options
and/or interventions.

**Private emails cannot be entertained due to time constraints,
consequently no private emails will receive a response.

**Thank you for your understanding ;-)

Next message: Nancy: "odds of miscarriage after seeing the heartbeat?"
Previous message: Dr: "Re: Incontinence after Burch"
In reply to: cathy: "levoxyl and estrogen"

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