A compartmentalized dispensing lid and a beverage container having a lid with a platform and a domed structure equipped with decanter mechanism and a plurality of compartments. The lid is fastenable to a beverage container, where the decanter mechanism enables a user to drink liquids housed within the beverage container. The plurality of compartments are each partitioned to hold and separate various dietary supplements from each other and from the liquid held within the beverage container. The dome and platform arrangement enables selectively dispersing a supplement of a certain compartment into the liquid of the beverage container to create a mixture that is consumed through the decanter mechanism.