Which of the following is considered a calming herb?

Chamomile is widely recognized for its calming properties and has been used for centuries as a natural remedy to promote relaxation and alleviate anxiety and stress. It is commonly consumed as a tea and is known to aid in sleep, making it a popular choice for those seeking relief from insomnia or nervousness. The active compounds in chamomile, such as apigenin, are believed to interact with specific receptors in the brain that promote sedation and a sense of calm.

In contrast, caffeine is a stimulant that can lead to increased energy and alertness, often resulting in heightened anxiety or restlessness in some individuals. Ginger is primarily known for its digestive benefits and anti-inflammatory properties, rather than calming effects. Blackberry, while nutritious and tasty, does not possess the same specific calming attributes associated with chamomile. Thus, chamomile stands out as the herb most aligned with inducing a state of calm and relaxation.