Rob Kardashian- 'Sippin on Sizzurp'?

DEEP INTO SIZZURP AND WEED

Is the famous Kardashian son getting into drugs for relief from his depression already?

Sources directly connected with the family, tells TMZ that the Kardashian's family desperately wants Rob to get help from what they say is a very bad drug problem.

Sources say the family is well aware of what has been going on with Rob, depicted by these photos during a drug-fueled party a few days ago.

You can see Rob holding a double cup ... the container of choice for Sizzurp.  The cup on the table actually has the words, "Codeine Boys" emblazoned on it.  He's also seen smoking weed.

TMZ were told that the Kardashians have been calling rehab facilities, but Rob refuses to go.  They feel desperate because they don't know what to do and hope pictures like these may change Rob's mind.

The Kardashians have stepped up before ... attempting an intervention for Lamar Odom's drug 

problem.

Is Rob Kardashian taking his weight gain too far? Depression!