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Is Nature-Throid conversion chart accurate?

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Old 09-03-2010, 06:38 AM   #1
Join Date: Sep 2010
Location: Baltimore, MD U.S.A.
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shorebird205 HB User
Is Nature-Throid conversion chart accurate?

I have been on 75mcg Synthroid for several yrs. I started seeing a Naturopath who switched me to Nature-Throid. I had palpitations a couple days after starting with .75 grain, then lowered it to 1/2 grain and felt the same. Lowered it to 1/4 grain for a few days and had no palps, but felt terrible. Now I'm back on 1/2 grain and the palps are back to varying degrees. Been trying to make the switch for almost one month. Also on supplements to boost adrenal function like pantothenic acid and vit. a,c & d. Anxiety has increased but don't know if it's from the switch or that I'm really worried about my symptoms.

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Old 09-03-2010, 09:00 AM   #2
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Re: Is Nature-Throid conversion chart accurate?

The "official" charts equate .1 mg Synthroid to 1 grain of the natural meds, but that's only in an ideal world. Differences in digestion, absorption, and conversion mean that 1 grain is more closely equivalent to only .075 mg of Synthroid for most people. In short, 1 grain is worth between .074 and .1 Synthroid.

It's important to understand that palpatations, while often frightening, aren't necessarily dangerous. Unless you're elderly or have a chronic heart condition, your body will eventually adapt to that T3 and the palps will disappear. That adaptation period generally lasts only a week or two per dose. Changing your dose every other day isn't the best idea and won't get you where you need to be as soon as you want to be there. You should pick a dose - 1/2 grain is a good start - and stay there for at least a month before raising it again.

Check with your doc about the palpatations to be sure.

Old 09-03-2010, 09:54 AM   #3
Join Date: Sep 2010
Location: Baltimore, MD U.S.A.
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shorebird205 HB User
Re: Is Nature-Throid conversion chart accurate?

Midwest1, thank you for your feedback. The palpitations are very nerve-wracking and unsettling, to be sure. When I recently had a 24-hr. urine test done, it showed that several hormone levels were far below normal/optimal range. As I also have recently begun taking supplements to support my adrenals (weak), I thought perhaps I may need a lower does of thyroid meds if my adrenals were being strengthened. I also wondered if given that Nature-Throid has both T3 and T4, I may need a lower dose. Your point is well-taken about not changing my dose so frequently.

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