Liver:
Get fresh organic carrots.
Juice them yourself.
Drink lots of this every day.
You may find yourself getting a sore throat from this.
These are the toxins heading for your thyroid.
Eat seaweed/kelp to clear your thyroid.
Kidneys:
Get fresh watermelon.
Juice or eat at least 200g every day.
Eat asparagus every day or every other day.
Drink lots of filtered water.
Do this for a month,
you feel results.
I got more if you want more
but this is a really good start.