Khloe Demanding Trip to Rehab For Lamar Odom, He's Saying No!

Lamar Odom's drinking has reached crisis level for Khloe Kardashian, and we've learned she desperately wants him to get help NOW ... but Lamar's digging in his heels.

Sources close to the still married duo tell us Khloe's doing everything she can to convince him to get treatment for addiction. We're told LO's happy to go to physical rehab, but refuses to deal with his drug demons.

We're told Khloe's even suggested an outpatient program, but Odom remains defiant.

Odom's own family members are also striking out. According to our sources, they've tried to convince him by pointing out several relatives, including his father, have addiction issues.

We're told Lamar's been communicating with his 2 kids in NY recently, but seeing him in a bar makes even them worry dad will fall back out of their lives.

Bottom line: No one close to Lamar believes he can "casually" drink without opening the door to renewed drug abuse.

Khloe's telling friends and family there will come a point when "she has to stop trying" to save Lamar.