Arnica

Arnica is a perennial herbaceous plant native to North America and most of Europe. It features yellow or orange flowers that are commonly used in traditional herbal medicine due to its bio-active properties.

• Toxin: Contains helenalin, a deadly toxin if consumed in large quantities orally. Probibly not what you expected to see on a health store, but they do say the difference between a tonic and a poison, is the dosage. In small quantities Arnica has shown to have good benefits.
• Bioactive Components: 150 distinct active ingredients, including antioxidants and cytoprotective agents.
• Uses: Used for pain relief, bruising, joint or muscle aches, and as topical pain products.

• It's advised that you do not taken this orally, though it's noted that it is included in very small quantities in foods.
• Avoid consumption in pregnancy or breastfeeding due to potential risks.