The flowers and leaves of the common St. John's wort
are filled with glands that produce a red pigment called hypericin. Although commonly used as a dietary supplement and for medicinal purposes, and therefore considered to be safe at appropriate dosages, those who consume too much of the plant
may experience side effects. These include sensitivity to sunlight, anxiety, dizziness, headache, fatigue, and gastrointestinal irritations. The plant
is also known for having the ability to interfere with certain medications, rendering them much weaker. Those who are on antidepressants, birth control, and cancer medication, among many others, should avoid consumption of this plant
- medical advice should always be sought if you are considering taking the plant
as a dietary supplement. Although safe when consumed in appropriate doses, those who mix the common St. John's wort
with other medications are at risk of poisoning symptoms. In addition to its effects when consumed, the common St. John's wort
can also cause topical irritations when it comes into contact with the skin. Some people may experience allergic reactions, rashes, and inflammation.