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Old 01-31-2013, 07:43 AM   #1
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Low Vitamin D?

So, I started synthroid for hypothyroidism last July. At the same time I also was started on a megadose of Vitamin D, because I was below average at 19.

I was just re-tested, and now my vitamin D has fallen to 13!

I've been on vitamin D for months now. Is it possible my synthroid is interfering with the absorption? I'm only on 50mcg, although they're upping me to 75 this week. I make sure to take them at different times of the day.

I'm just confused over this turn of events. It just doesn't make sense to me. My doctor didn't say anything though beyond "you have to start another round of megadose treatment".

Last edited by ker08; 01-31-2013 at 08:09 AM. Reason: changed previous vitamin d level

 
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Old 01-31-2013, 08:06 AM   #2
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Re: Low Vitamin D?

Don't know if it's causing it but I do know that just before my hemi they started me on Vitmin D becuase mine was low. HOpe I don't drop further now because of the Levothyroxine. Maybe someone else can tell us both

 
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Old 01-31-2013, 08:09 AM   #3
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Re: Low Vitamin D?

I hope so, because this seems really strange to me....

 
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Old 01-31-2013, 08:28 AM   #4
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Re: Low Vitamin D?

That is strange. The only thing I know is us hypothyroid patients do not absorb anything very well.

Could it possible the brand you are taking that is not right for you? Just throwing things out there.
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Old 01-31-2013, 08:40 AM   #5
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Re: Low Vitamin D?

I don't know...maybe. The only other thing I was debating is that since it's winter, I am outside less than I was back in August so I suppose that could have lowered it. But given how many pills I've taken since then, I would have thought it would have prevented that from happening.

The only other thing I've changed in the intervening time is I stopped drinking diet pop and switched back to water. Can't imagine that would have effected anything though.

 
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Old 01-31-2013, 08:52 AM   #6
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Re: Low Vitamin D?

Are you taking a prescription form of vit D given by your doctor? This prescription D is usually the inactive form of the vitamin, D2, which sometimes doesn't improve levels at all. You want to be taking D3, not D2. I've seen at least one instance here where 50,000 units of D2 failed to correct the problem, but just a couple thousand units of over-the-counter D3 did.

I was able to significantly improve my D level by taking 5000 units of D3 a day. Once it got up, I reduced the dose to 2000 per day and it seems to be holding.
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Old 01-31-2013, 10:15 AM   #7
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Re: Low Vitamin D?

I believe it was 50,000 of D2, then 2,000/day of D2 after (will check the bottle when I get home). This time though the nurse did say D3. That would be great if that's the fix for this issue. Thanks!

 
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Old 02-02-2013, 01:03 PM   #8
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Re: Low Vitamin D?

If the doctor is giving you D2, that is not absorbable like D3 that you buy over the counter. That's all I take and mine is between 45 and 50 and I take about 2,000 units. You would need more for awhile but the D3 not 2.

p.s. didn't see midwest's answer but yes, that's what i'm saying too!

Last edited by Bran'sNana; 02-02-2013 at 01:05 PM.

 
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Old 02-02-2013, 04:55 PM   #9
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Re: Low Vitamin D?

I agree with Midwest totally, I was on D2 but read up on it and started on D3. It took no time for my levels to rise, my very next test had it within range but still needed to be a bit higher. I also take 5000 ui of d3 and won't reduce until next test says it is still in range. I live in oz and we have sun most of the year but we do have a problem absorbing! I have recently been to,d by a specialist that the best place to absorb sunlight for d3 is in the "long bones" upper arms and thighs along with eyes, that may be of some use to you

 
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Old 02-04-2013, 07:13 AM   #10
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Re: Low Vitamin D?

thanks everyone! I did check, and the "mega-dose" they put me on is once again D2, however the bottle of supplements I've been taking is D3.

The only difference this time is they told me to take the 2000 D3 everyday, even while I'm taking the 50,000 D2 1x/week. Last time they just told me to start it after I was done with the 10 weeks of D2 mega. And they only told me to take 1000/day.

 
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Old 02-04-2013, 08:54 AM   #11
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Re: Low Vitamin D?

Yes, you would need 2,000 of D-3 at the least. that's all I take. Mine was never that low I don't think though, I never was on the other, which a lot of docs seem to do and it doesn't even help...duh..

 
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Old 02-06-2013, 07:37 PM   #12
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Re: Low Vitamin D?

I heard you need enuf calcium and magnesium to absorb Vit D effectively. Ask your doc if you need to supplement those also to get the levels where you need them.

 
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Old 02-07-2013, 12:14 PM   #13
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Re: Low Vitamin D?

Yes, thanks for adding that...I take cal/mag too and you should also take D when eating the most fat of the day meal, because it's fat soluble.

 
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