Dog is coughing & trying to puke something out which appears to be caught in his throat. WHAT CAN I GIVE HIM TO EAT OR DRINK TO DISPELL/CLEAR HIS THROAT??

If something is lodged eating or drinking could dislodge it and cause him to choke.

He needs to see a Vet - soon.

How long has this been happening?

Please stop asking the same question - it's been answered on your other thread.