I know that for immunity important - vitamin A, D, E, C, B6, B12, B9, zinc, iron, copper, selenium, magnesium. But is there any classification on their importance? Particularly interesting about parasites
Have you been diagnosed by a medical doctor for parasites? If you think you have a parasite, I would see a physician for treatment.
Eating a healthy, balanced diet with lots of fruits and vegetables will provide you with your vitamins and support your immunity.
There are currently no known proven remedies for excreting or eliminating parasites through Micronutrients. The best advice, as everyone has already mentioned, is to get a Prescription from a doctor.
Not only will they be able to give you the proper medicine but they can also decide if medicine will be the proper approach because there are a wide variety of parasites, some may need to be extracted manually and hopefully that is not the case for you.