Evening primrose oil (EPO) is an herbal option that has claims of a variety of medical benefits. It is available in two different forms, which are briefly mentioned below:

Oil

Oil from the herb is one type, however, as mentioned below it should only be taken by adults, and not children, who are only to use the capsule variety when taking evening primrose oil. The standardization is that the oil's gamma-linolenic acid should be 8% of its contents.

Capsules

EPO capsules can be taken by both adult and pediatric patients. Like the oil variety, capsules should be standardized to 8% GLA content.

Method of production

The seeds of the plant are pressed in order to release the oils, which are then used to make both the oil and capsule forms of this herbal medicine.

How to take evening primrose oil, and dosage

Consider that there may be certain side effects, contraindications, and interactions with other herbs, supplements, or medications. The information on this site is not a substitute for professional medical advice, and is only general and informational in usage.

In children, the general dosage is considered to be 2 - 4 grams on a daily basis, only in the capsule form.

For adults, doses can be somewhat higher, anywhere from 2 - 8 grams per day. A dose may be even higher in some extreme cases. Adult patients can also use either the capsule or the oil type.

Other names

You may see evening primrose oil products with the names: Oenothera biennis, or sun drop.