I was having migraines weekly which were getting worse - recurring over a few days & had just been prescribed a daily medication (amitriptaline).
I was told about this fast/diet specifically for migraines, but was apprehensive & doubtful about it.
it's three days of only water & grapefruit & then two days of raw fruit & veg. I was told that I'd get a full on migraine which I did, & managed with a rotation of ice packs day & night, telling myself that this was just three days. On day three the migraine went & I'm feeling better & better!
I'm having a fruit or veg juice on most days to stay healthy.
A friend of mine says she does this yearly or so when she needs to (she likes her caffeine).