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Re: Half-Life of DMSA

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You don't have to have your doctor's permission to dose more frequently at lower

dose or for that matter have a doc to chelate. Good for you for questioning the

doc rather than just going along with what the doc says. Many on this list got

here by going along with what docs or dentists said and not questioning them.

S S

<p>I found in archives: " The half life of DMSA in children is

well<br>

established in the literature by direct measurement of blood levels.<br>

It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. " <br>

<br>

I need to show that literature to my DAN doc. He scoffed at the low<br>

dose idea and showed me succimer (DMSA) in the PDR had a quite<br>

different half-life. " The apparent elimination half-life of the<br>

radio-labeled material in the blood was about two days. " -<br>

<a href= " http://tinyurl.com/g2mop " >http://tinyurl.<wbr>com/g2mop</a><br>

<br>

So now he's got my wife giving the boy 25mg 3x/day, I guess forever. <br>

I don't think I'm comfortable with this, since he already has shown on<br>

labs to always have elevated alkaline phosphatase levels. <br>

<br>

So I'd like to be directed to the literature cited above, so that I<br>

may have some rebuttal, please. Thanks very much!<br>

<br>

Mark<br>

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Will your wife agree to dose more frequently if you show her the

literature? Sounds like she does what the doctor tells her to do.

Pam

>

> I found in archives: " The half life of DMSA in children is well

> established in the literature by direct measurement of blood

levels.

> It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

>

> I need to show that literature to my DAN doc. He scoffed at the

low

> dose idea and showed me succimer (DMSA) in the PDR had a quite

> different half-life. " The apparent elimination half-life of the

> radio-labeled material in the blood was about two days. " -

> http://tinyurl.com/g2mop

>

> So now he's got my wife giving the boy 25mg 3x/day, I guess

forever.

> I don't think I'm comfortable with this, since he already has

shown on

> labs to always have elevated alkaline phosphatase levels.

>

> So I'd like to be directed to the literature cited above, so that I

> may have some rebuttal, please. Thanks very much!

>

> Mark

>

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Thanks. Well to minimize the amount of damage to kids it would be

beneficial to get this literature into the hands of as many DAN

doctors as possible.

I don't want to be skeptical because I've also heard from many parents

who started seeing better results and less problems when they switched

to low-dose high-frequency. But on the other hand, I also have yet to

see any data. That's why I asked where is the literature. This is

probably a question only Andy can answer, it appears.

Mark

> >

> > I found in archives: " The half life of DMSA in children is well

> > established in the literature by direct measurement of blood

> levels.

> > It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

> >

> > I need to show that literature to my DAN doc. He scoffed at the

> low

> > dose idea and showed me succimer (DMSA) in the PDR had a quite

> > different half-life. " The apparent elimination half-life of the

> > radio-labeled material in the blood was about two days. " -

> > http://tinyurl.com/g2mop

> >

> > So now he's got my wife giving the boy 25mg 3x/day, I guess

> forever.

> > I don't think I'm comfortable with this, since he already has

> shown on

> > labs to always have elevated alkaline phosphatase levels.

> >

> > So I'd like to be directed to the literature cited above, so that I

> > may have some rebuttal, please. Thanks very much!

> >

> > Mark

> >

>

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>

> I found in archives: " The half life of DMSA in children is well

> established in the literature by direct measurement of blood levels.

> It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

>

> I need to show that literature to my DAN doc.

i found some things that might help.

in this article

http://www.ehponline.org/members/2001/109p167-171frumkin/frumkin-full.html

Diagnostic Chelation Challenge with DMSA: A Biomarker of Long-Term

Mercury Exposure?

Frumkin,1 Claudine C. Manning,2 L. ,3

,1 B. ,4 Marsha Pierce,4 Elon,2 and Vicki S.

Hertzberg2

it says

'The blood concentration of DMSA peaks in 3 hr, and the half-life is

3.2 hr (15). '

and refers to this paper

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve & db=PubMed & list_uids=1\

331491 & dopt=Abstract

Aposhian HV, Maiorino RM, M, Bruce DC, Dart RC, Hurlbut KM,

Levine DJ, Zheng W, Q, D, et al. Human studies with

the chelating agents, DMPS and DMSA. J Toxicol Clin Toxicol 30:505-528

(1992).

you could just give those to your wife, or go to a med library, find

the complete aposhian paper, and keep tracing the papers back to find

the sources.

He scoffed at the low

> dose idea and showed me succimer (DMSA) in the PDR had a quite

> different half-life. " The apparent elimination half-life of the

> radio-labeled material in the blood was about two days. " -

> http://tinyurl.com/g2mop

>

i went to this link and didn't find anything.

> So now he's got my wife giving the boy 25mg 3x/day, I guess forever.

tell her that you met a poisoned woman on the internet who tested dmsa

on herself and told you that from her own experimentation and from all

of the other reports from adults that she has read in chelation group

archives, she knows for sure that it is best to take dmsa every 4 h or

more frequently. if she continues to dose 3x per day there will be

redistribution that will lead to worsening.

if only she could experience what redistribution felt like for me she

would understand.

linda j

> I don't think I'm comfortable with this, since he already has shown on

> labs to always have elevated alkaline phosphatase levels.

>

> So I'd like to be directed to the literature cited above, so that I

> may have some rebuttal, please. Thanks very much!

>

> Mark

>

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In the following post, Andy mentions a few papers that give the

pharmacokinetics of DMSA:

http://onibasu.com/archives/am/7191.html

--

>

> I found in archives: " The half life of DMSA in children is well

> established in the literature by direct measurement of blood levels.

> It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

>

> I need to show that literature to my DAN doc. He scoffed at the low

> dose idea and showed me succimer (DMSA) in the PDR had a quite

> different half-life. " The apparent elimination half-life of the

> radio-labeled material in the blood was about two days. " -

> http://tinyurl.com/g2mop

>

> So now he's got my wife giving the boy 25mg 3x/day, I guess forever.

> I don't think I'm comfortable with this, since he already has shown on

> labs to always have elevated alkaline phosphatase levels.

>

> So I'd like to be directed to the literature cited above, so that I

> may have some rebuttal, please. Thanks very much!

>

> Mark

>

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I very rarely do what my doctor says, even my DAN

doctor. I find my own judgement turns out better

for me, but I do alot of research. Does the DAN

doctor have an autistic child? Usually parents

are watching child closer and reading more on it

than doctor. I don't totally disregard what

he/she says, but recheck everything and make my

own decisions from there.

I don't see how slower chelating could hurt

anway, or low doses more freq could hurt no

matter what the half life argument turns out to

be. I looked up half life on oral EDTA and got

different information, ranging from 40 minutes to

2 hours.

--- redrackem <redrackem@...> wrote:

> I found in archives: " The half life of DMSA in

> children is well

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Check with Andy Cutler who has done a tremendous amount of research on this.

Barb

[ ] Half-Life of DMSA

I found in archives: " The half life of DMSA in children is well

established in the literature by direct measurement of blood levels.

It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

I need to show that literature to my DAN doc. He scoffed at the low

dose idea and showed me succimer (DMSA) in the PDR had a quite

different half-life. " The apparent elimination half-life of the

radio-labeled material in the blood was about two days. " -

http://tinyurl.com/g2mop

So now he's got my wife giving the boy 25mg 3x/day, I guess forever.

I don't think I'm comfortable with this, since he already has shown on

labs to always have elevated alkaline phosphatase levels.

So I'd like to be directed to the literature cited above, so that I

may have some rebuttal, please. Thanks very much!

Mark

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Guest guest

" The apparent elimination half-life of the

> > radio-labeled material in the blood was about two days. " -

> > http://tinyurl.com/g2mop

>

> i went to this link and didn't find anything.

Here is the full link:

http://www.drugs.com/data/_pop3.cfm?htm=73200425.htm & bn=SUCCIMER & pageid=0 & type=p\

dr & pop=1

It's basically what the PDF says about Succimer.

Mark

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Thank you, . I wish I could get that full study paper to show

the doc. I agree I'll have to attack this in our home only - since

the doc probably doesn't want a patient telling him what's up.

Mark

> >

> > I found in archives: " The half life of DMSA in children is well

> > established in the literature by direct measurement of blood levels.

> > It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

> >

> > I need to show that literature to my DAN doc.

>

>

>

>

> i found some things that might help.

>

> in this article

>

>

http://www.ehponline.org/members/2001/109p167-171frumkin/frumkin-full.html

>

> Diagnostic Chelation Challenge with DMSA: A Biomarker of Long-Term

> Mercury Exposure?

> Frumkin,1 Claudine C. Manning,2 L. ,3

> ,1 B. ,4 Marsha Pierce,4 Elon,2 and Vicki S.

> Hertzberg2

>

> it says

>

> 'The blood concentration of DMSA peaks in 3 hr, and the half-life is

> 3.2 hr (15). '

>

> and refers to this paper

>

>

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve & db=PubMed & list_uids=1\

331491 & dopt=Abstract

>

>

> Aposhian HV, Maiorino RM, M, Bruce DC, Dart RC, Hurlbut KM,

> Levine DJ, Zheng W, Q, D, et al. Human studies with

> the chelating agents, DMPS and DMSA. J Toxicol Clin Toxicol 30:505-528

> (1992).

>

>

> you could just give those to your wife, or go to a med library, find

> the complete aposhian paper, and keep tracing the papers back to find

> the sources.

>

>

>

>

>

> He scoffed at the low

> > dose idea and showed me succimer (DMSA) in the PDR had a quite

> > different half-life. " The apparent elimination half-life of the

> > radio-labeled material in the blood was about two days. " -

> > http://tinyurl.com/g2mop

> >

>

>

>

>

> i went to this link and didn't find anything.

>

>

>

>

>

> > So now he's got my wife giving the boy 25mg 3x/day, I guess forever.

>

>

>

>

>

> tell her that you met a poisoned woman on the internet who tested dmsa

> on herself and told you that from her own experimentation and from all

> of the other reports from adults that she has read in chelation group

> archives, she knows for sure that it is best to take dmsa every 4 h or

> more frequently. if she continues to dose 3x per day there will be

> redistribution that will lead to worsening.

>

> if only she could experience what redistribution felt like for me she

> would understand.

>

> linda j

>

>

>

>

>

>

>

>

>

> > I don't think I'm comfortable with this, since he already has shown on

> > labs to always have elevated alkaline phosphatase levels.

> >

> > So I'd like to be directed to the literature cited above, so that I

> > may have some rebuttal, please. Thanks very much!

> >

> > Mark

> >

>

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Thanks again. These look very good. I don't know whether I'll be

able to access the studies. Unless I pay for them. I have the

feeling I'm going to be the one staying up all night.

> >

> > I found in archives: " The half life of DMSA in children is well

> > established in the literature by direct measurement of blood levels.

> > It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

> >

> > I need to show that literature to my DAN doc. He scoffed at the low

> > dose idea and showed me succimer (DMSA) in the PDR had a quite

> > different half-life. " The apparent elimination half-life of the

> > radio-labeled material in the blood was about two days. " -

> > http://tinyurl.com/g2mop

> >

> > So now he's got my wife giving the boy 25mg 3x/day, I guess forever.

> > I don't think I'm comfortable with this, since he already has shown on

> > labs to always have elevated alkaline phosphatase levels.

> >

> > So I'd like to be directed to the literature cited above, so that I

> > may have some rebuttal, please. Thanks very much!

> >

> > Mark

> >

>

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You can find this one online: Env. Hlth. Persp. 1995:103:734-9

Search for Environmental Health Perspectives volume 103. That

should turn it up.

Showing this to your doctor may or may not convince him of

anything. You might try a pharmacist first - ask if dosing

at the half life is a better idea. If the pharmacist " gets it " ,

then you can use the pharmacist as an authoritative backup

when you talk to the doctor.

My doctor is now convinced that ALA is more than " just an

antioxidant " . She won't quite call it a chelator, but she

" did some more research " on it and says it is " synergistic

with DMSA " . It's a baby step, but I call it progress.

--

> > >

> > > I found in archives: " The half life of DMSA in children is well

> > > established in the literature by direct measurement of blood levels.

> > > It is 2.5 to 3.5 hours, depending on the individual, not 8 hours. "

> > >

> > > I need to show that literature to my DAN doc. He scoffed at the low

> > > dose idea and showed me succimer (DMSA) in the PDR had a quite

> > > different half-life. " The apparent elimination half-life of the

> > > radio-labeled material in the blood was about two days. " -

> > > http://tinyurl.com/g2mop

> > >

> > > So now he's got my wife giving the boy 25mg 3x/day, I guess

forever.

> > > I don't think I'm comfortable with this, since he already has

shown on

> > > labs to always have elevated alkaline phosphatase levels.

> > >

> > > So I'd like to be directed to the literature cited above, so that I

> > > may have some rebuttal, please. Thanks very much!

> > >

> > > Mark

> > >

> >

>

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It seems like the only one you need to convince

is your wife. The doctor has no control over

what you do at home. I almost never do what my

doctor says since I've had bad results in many

areas for following them rather than my own gut

instincts or reading. I file most of the

prescriptions I get just in case I decide to take

them later.

--- redrackem <redrackem@...> wrote:

> Thank you, . I wish I could get that full

> study paper to show

> the doc. I agree I'll have to attack this in

> our home only - since

> the doc probably doesn't want a patient telling

> him what's up.

>

> Mark

>

>

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>

> " The apparent elimination half-life of the

> > > radio-labeled material in the blood was about two days. " -

> > > http://tinyurl.com/g2mop

> >

> > i went to this link and didn't find anything.

>

> Here is the full link:

>

http://www.drugs.com/data/_pop3.cfm?htm=73200425.htm & bn=SUCCIMER & pageid=0 & type=p\

dr & pop=1

>

> It's basically what the PDF says about Succimer.

>

In the Asiedu et al paper this part is mentioned on the last page.

Asiedu says that the McNeil study had an initial t 1/2 of 2.1 h,

similiar to what Asiedu found, and a 'terminal' t 1/2 of 2.1 days.

They hypothesise that the second elimination phase may be from stored

drug metabolites in the gallbladder.

J

> Mark

>

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