When you go into labour will be fine. The trick is to remember!! I didn't (too much else going on) but started taking them the next day and they really, really helped (and I had a c-section so there was some healing to do!!!)
Some research has been inconclusive and they seem to suggest that these are no more than placebo. I had not heard of them before today. I think like anything else in life it may work for one individual and not for the next.
I have had 2 c-sections and used Arnica for the second - did not know about it for no1. For no2 I healed quicker and was on light pain relief earlier than with no1. I am sure they helped along with the tea tree oil for my wound. I simply started taking them when I got back to my room.
I use them a lot even outside of labour. I bruise quite easily and always notice the difference in scale,intensity, soreness if I haven't managed to take some arnica immediately after a knock. (I'm forever walking into things so I have a lot of experience )
Would definitely take them. Take the high potency for best healing after labour. 200C I think.
I use them all the time - and often on dd - who is far too young to benefit from a placebo effect. It's not actually the arnica that stops the bruising - it just stimulates the bodies own immune system to deal with it more effectively.
I believe it is O.K to breastfeed whilst taking arnica - I did.
I didn't start taking my arnica tablets until nearly a week after giving birth - but I did find them really helpful after a lovely forceps delivery etc.
Would also really recommend some of those gel packs that you put in the freezer and then insert into a disposable muslin wrap and put in your knickers - there were absolute bliss for the few weeks after the birth.
I used them after giving birth to dd and healed from episiotomy & stitches really quickly. I read somewhere recently that if you take them every hour in labour they can also help with the pain - don't know if this is true but I'm going to try anyway!