What is the best fish oil to take that will not increase cholesterol? but give all the benefits? is taken a multivitamin more beneficial than only taken select vitamins?

Most fish oil products may increase LDL cholesterol but lower triglycerides. In general, taking MVI or not does not provide any extra health benefits with a typical American diet. For people with selected vitamin deficiency, e.g. low B12 because of vegetarian diet or vitamin D deficiency in dark skin people, taking just vitamin B-12 or D should be done instead of taking MVI.