Current good practice is to also supplement with vitamin K when taking D. This is to promote carboxylation of osteocalcin, so calcium is directed into bones rather than soft tissues[1].
Additionally, please no one take vitamin K supplements without speaking with your physician first. They’re a direct reversal agent for a class of anticoagulants, the prime example of which is warfarin. It’d suck if you accidentally had a stroke or pulmonary embolism because of a random internet comment.
With regards to vitamin K, all the versions of the supplement I've seen have a specific warning on the bottle that they're not to be used if you're also taking anticoagulants.