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Oct 27, 2013
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Hi guys me again.. I'm on mercaptopurine 100 mg. I was told it can cause harm to my partner if we made love. Is this true. She is pregnant right now.
 
It shouldn't, but if you were trying to conceive it may have an effect on the child. Maybe consult with the Trying To Conceive section of the forum? If that's not the goal I would think your partner should be fine, though.

EDIT: Searched and saw mothers reporting that they even took 6mp throughout pregnancy, so I would think it's definitely fine.
 
6-MP was one of the drug my GI was really not worrying about during pregnancy at the least when it is the mother that takes it. I am looking in papers to find information regarding the father(taking the 6-MP) and the risks that it carries.

It seems that the researches that were done at the beginning of last decade were pointing towards a possibility for an increased risks of congenital abnomalies. Though, another study have been published, Hoeltzenbein et al. (2012) that came to the conclusion that the risks were not really increased and that "[a]lthough data are still limited, [they] see no need for termination of a pregnancy or invasive diagnostics only because of paternal treatment with AZA or 6-MP."

An article of journal of gastroenterology was suggesting the following regarding these drugs (Burton et al.(2000)) :
"The first tenet of medicine is to do no harm, and the price of caution here is small. Our results should temporarily serve to introduce this caution so that male IBD patients should stop 6MP 2–3 months before impregnation, restart the drug after the wife conceives, but restart the drug earlier if there is an exacerbation before impregnation. Almost certainly we will eventually learn that women with IBD who are on 6MP should also stop the drug at some time before conception, although, in this situation, pregnancy should not even be initiated in the presence of active disease. Using the terminology introduced by Dr. Kane “what’s good for the goose should be good for the gander”, we would paraphrase her title with “what’s bad for the gander should also be bad for the goose
.”

I am the precautionary type of gal but if the pregnancy is desired, I would rather try to find a good team of ob-gyn just to make sure you have the optimal follow-up with a high-resolution fetal ultrasonography to allow you to screen for birth defect if ever that were to happen.


Burton I Korelitz, Ramona O Rajapakse, Jusuf Zlatanic, Peter J Baiocco, Gilbert W Gleim, 6MP for fathers with IBD at the time of conception: the value of a large clinical experience over unrelated controls, The American Journal of Gastroenterology, Volume 95, Issue 9, September 2000, Pages 2386-2387
Maria Hoeltzenbein, Corinna Weber-Schoendorfer, Cornelia Borisch, Arthur Allignol, Reinhard Meister, Christof Schaefer, Pregnancy outcome after paternal exposure to azathioprine/6-mercaptopurine, Reproductive Toxicology, Volume 34, Issue 3, November 2012, Pages 364-369)
 
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