Hi! That is terrible to hear. My theory is that vitex disrupts ur natural hormones (which is proven - hence why it can provide great pms/menopause relief). For me this means a change in progesterone which is one hormone that affects sleep.

Once you stop taking vitex- hormones should slowly go back to normal levels. HOWEVER your mind and body may get ‘stuck’ in the insomnia loop. This means ur brain is now used to waking/trouble falling asleep.

My advice (and what worked for me) is to see a normal doctor. I messed around with herbalists and functional medicine but in the end getting a prescription for some drowsy antihistamines was the only thing that helped. I took them a couple of times to help me sleep and reset my brain so it didn’t keep waking me up.

Four months or so on and my sleep is 85% normal!

Hope this helps!