As I've commented before dry cracked spitting fingertips and brittle fingernails had become a nuisance due to Imbruvica. Constant application of lotions, liquid bandage always close by, use of Hard as Nails, grease up and sleep with surgical gloves...
And then this... I had been drinking about 2 1/2 to 3 quarts of water daily. I might even have slipped a bit and was consuming closer to just 2 quarts
I recently ramped up my water consumption to 4 quarts per day. A full 2 quarts each morning with my coffee.
Within a week or so of starting this the splitting has virtually stopped. Nails are less brittle. Haven't had to use liquid bandage on a cracked split fingertip in days.
Now I'm not a big fan of water on its own. Really prefer to enjoy it later in the day enhanced with rocks and a daily ( medicinal ) dose of bourbon.
But I'll keep pouring water down if it eliminates the troublesome side effect of Imbruvica.