With all the current hype about vitamins and mineral supplements in the news these days, I would definitely ask my doctor or pharmacist if it's OK. We cannot tell you to take or stop ANYTHING. Only a professional can give you those answers.
Peace
Greenlydia
If you are taking a calcium supplement you should also have your D3 levels measured. You should probably be on a D3 supplement. There are no contraindications to taking the medications listed together. Synthroid has an interesting history. It is a "brand name" and the composition of the product has changed several times since it's introduction. The B12 supplement should be sublingual with folic acid.
I talked to my pharmacist and he said it was ok to take vitamins with the paxal. I am now on citalopram so I will have to ask him again.
It's better to be safe than sorry and I know your pharmacist won't mind the question. They went to school a long time to become Doctors of Pharmacology and I've never met one who doesn't appreciate sharing his/her knowledge.
Peace
Greenlydia