Different people are affected differently by citric acid, if it does bring you out of ketosis it will be for a short while, by continuing with the diet you should go back into without noticing and no damage done.
Thanks for that. Checked my urine still in ketone and have not felt any different. Only problem is I haven't lost any weight. Going to blame it on being bunged up as have been 100% and not hormonal. Carry on for next week. Thanks for the reply