All of these supplements have few known side effects, but it is recommended to speak with a healthcare professional before starting any new supplement regimen.
Refer to the bottle of your supplement for guidance on how much to take daily and if you should take it with food.
Look into multivitamins There are many different types out there with a variety of vitamins and minerals. Speak to your physician for a multivitamin that they recommend.
You can get your supplements online, from a pharmacy or directly from your physician. Ask your doctor what brands they recommend but here are some popular ones: Centrum, One a Day, Nature Made.