Naproxen and irregular cycles: Hi, I was prescribed... - NCT


51,853 members16,256 posts

Naproxen and irregular cycles

LenaLou profile image


I was prescribed naproxen for back pain in November and took it for two months until the end of Dec. I wasn't told at the time, and in too much pain to read the small print but I've since read that it can affect fertility but not sure how.

During this time I was using an ovulation monitor. Before taking the naproxen I was 28 days cycle with peak LH at days 15/16 but then when I was taking naproxen (and after) I went to 26 days and peak at days 11/12. I've never not been 28 days.

Now 3 months on, I've returned to 28 days, but still 3 days early detecting a rise and peaking at days 12/13 and wondering if this is still the naproxen.

Has anyone else taken naproxen and noticed a change in cycle? And how long did any effects last?


3 Replies

I’m on naproxen Hun and literally just took one as I’ve just sat down and I didn’t know that either . My cycles are now 26 to 27 days and only a 3 day cycle instead of my 5-7 day cycle , I thought it was due to a DC in August removing my missed miscarriage of twins , I’m considering going back to the doctors next week. Hope your ok ? I’m trying for another also but no luck as of yet xx

LenaLou profile image
LenaLou in reply to Sisi14

Thank you. We had only just started trying for our first and then I injured myself at work -typical. So far no luck, and with this naproxen I don't know how long to expect altered cycles. If I'd have known I wouldn't have taken them. Sorry to hear about your situation. Interesting that you also have shorter cycles. It doesn't mention anything about that in the packet. I found research done where women didn't release an egg at all while on naproxen, so I feel anything me partner and I is doing is for nought if I'm not even ovulating :( Anyway, will continue on! Hope the doctors gives some answers to you when you go x

Sisi14 profile image
Sisi14 in reply to LenaLou

Thankyou my lovely, I was given a lot of these tablets on prescription and the doctor or consultant didn’t mention anything about delaying or stopping eggs so it’s interesting as now I will stop taking them also. I will ask my doc as I’ve been trying for a few months now and I have a app to know when ovulation etc is taking place ! Hope you get a sticky baby bean soon xx

You may also like...