Castor oil stays in your system anywhere from 4 to 18 hours. My advice is don't try this for the first time when you're alone - you may need to someone to call for help. Try a smaller amount to start and have something available to wash out your eye if you need it. The literature I read said the bad side effects can accumulate if you continue to use the castor oil. You won't know if you'll have bad side effects unless you try the castor oil.
Thankfully I recovered but it took at least 18 hrs for all effects to dissipate. This won't happen to everyone but please be aware.
Castor Oil
Castor Oil
I used the NOW brand of Castor Oil in my eye at bedtime and every time my heart would just race for quite some time. I kept it up for a week with no difference, but the elevated heart rate was so uncomfortable I stopped using it. Could anyone enlighten me why this would happen? With thanks