Will taking Nitrofurantoin Macrocrystal cause my Breast Implant to encapsulate?

Thank you for your question.  In short, no, the antibiotic should not cause encapsulation or capsular contracture of your implant.  Best of luck to you.

Hi B,The most popular current theory about capsules is that they are a result of a bacteria "biofilm" which coats the implants.  This results in inflammation, and then tight scarring.  So, no, an antibiotic (even though Nitrofurantoin is more of a chemical antibiotic) will not increase your chance of having a capsule.  No cause for alarm.  All the best, "Dr. Joe"

It would be impossible to say for certain if any particular medication could put you at increased risk for capsular contracture without performing a scientific study. I do not know of any such studies and can not think of a reason as to why Nitrofurantoin would have any correlation with capsular contractures. I do not think that there is any reason to worry about this any more than anyone else who isn't taking this medication.  

I am not aware of any medication, especially an antibiotic, that would increase your risk for developing a capsular contracture. 

I am unaware of any information to suggest this would be an issue nor can I think of any reason it might be so. You still do have a risk of forming a capsular contracture though. We have not yet discovered how to absolutely prevent capsular contracture from occuring.