I was wondering... I have a bottle of 375 tablets of expired Calcium/Magnesium with Vitamin d3 and Zinc. Would it be safe :confused:to place a tablet occasionally in the watering can, as a type of supplement for my houseplants? To "recycle" them? All of your opinions would be greatly appreciated!:)

How long have they been expired? I think (again 'think') the worst that could happen is nothing:rolleyes: If they are expired past their date then they might not have anything to give to the plants:confused:
Again this is just a guess.