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- $Unique_ID{BRK01496}
- $Pretitle{}
- $Title{Thyroid Medication "Too Complicated to Explain"?}
- $Subject{thyroid gland medication endocrine glands metabolism thyroxine t4
- triiodothyronine t3 hormones hypothalamus thyrotropin releasing hormone trh
- stimulating tsh stimulates hypothyroidism lethargy dullness sparse dry hair
- coarse scaly thick skin thyroidea medications}
- $Volume{C-22}
- $Log{
- Locations and Function of the Endocrine Glands*0002901.scf
- Hormones of the Hypothalamus*0002902.scf
- The Thyroid and Parathyroid*0002904.scf
- Histology of the Thyroid*0007001.scf}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
-
-
- Thyroid Medication "Too Complicated to Explain"?
-
-
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-
- QUESTION: I have had to take some type of thyroid medication for the better
- part of my adult life. I started with simple thyroid tablets years ago, but
- as I have had to change doctors over the years, both the type and amount of my
- medications have also been changed. When I ask about it, the doctor usually
- just shrugs his shoulder and tells me "it's too complicated to explain". I
- suppose it is too complicated for you too, but I hope you will try for my
- benefit and lots of your other readers.
-
- ------------------------------------------------------------------------------
-
- ANSWER: It is not all that complicated, but its a bit more difficult without
- being able to draw a diagram or two. However, here we go. The thyroid gland
- produces two chemicals, thyroxine (T4) and triiodothyronine (T3). T3 is the
- biologically active form of thyroid hormone, and T4 acts as a reserve which
- can be rapidly converted into the active form when needed. The hypothalamus,
- located at the base of the brain, monitors the amount of T3 and T4 circulating
- in the blood and releases a hormone, thyrotropin releasing hormone (TRH), when
- more thyroid hormone is needed. TRH acts on the pituitary gland, which in
- turn produces thyroid stimulating hormone (TSH) which "stimulates" the thyroid
- gland into thyroid hormone production. To provide additional hormone to
- patients who do not produce enough of their own, a variety of preparations
- made from dried and purified extract of animal thyroids can be used. Though
- every effort is made to maintain the exact dosage, the concentration of T3 and
- T4 in these natural preparations may vary. However we now have a number of
- synthetic preparations available in which the active ingredients are well
- controlled. It is probably these newer preparations which have been
- substituted for the extract you were taking formerly. Since we can also
- determine the amount of TSH, T3 and T4 circulating in the blood, these tests
- are used to assure that the right dosage is being taken to restore the body
- metabolism to normal. When this achieved the signs of
- hypothyroidism--lethargy and dullness, sparse and dry hair, coarse and scaly
- thick skin--rapidly disappear. Now, I hope my explanation was not too
- complicated, but provides the information and help you requested.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-
-