What follows is a general guideline. However, your rabbi should be consulted when any doubt arises. Kosher le-Pesah labels that do not bear the name of a rabbi or one of the recognized symbols of rabbinic supervision, or which are not integral to the package, should not be used without consulting your rabbi. The Committee on Jewish Law and Standards has ruled unanimously that peanuts and peanut oil are permissible. Some Ashkenazic authorities permit, while others forbid the use of legumes in a form other than their natural state, for example, corn sweeteners, corn oil, soy oil.
Sephardic authorities permit the use of all of the above.
Consult your rabbi for guidance in the use of these products. If it is not for life sustaining therapy, some authorities permit, while others prohibit. Consult your rabbi. In all cases, capsules are koshered by rinsing. The process of kashering utensils depends on how the utensils are used.