Cayenne is widely used as a spice, but cayenne peppers are also dried and powdered for medicinal purposes. Cayenne is known to stimulate muscle movement and digestion in the human intestines, which is important for restoration of deficient digestive secretions and absorption of nutrients. Cayenne proves to be effective in stimulation of blood circulation and flow to the peripheral parts of the body. For these reasons cayenne is often included to different herbal remedies. Besides, it enhances the absorption of the other herbs.
Cayenne can even raise the body temperature promoting sweating which is known as a diaphoretic (sweat-inducing) effect. This action is helpful in decreasing fevers, thus, relieving sinusitis and colds. Cayenne has been used for the treatment of mild high blood cholesterol levels and high blood pressure. Cayenne works by preventing platelets from getting together in the blood, which allows the blood to easily flow. As it improves blood circulation, it can be used by people who suffer from cold hands and feet.

Cayenne is also known as capsicum. It is an over-the-counter product that requires no prescription. Being used for many health issues and weight loss, Cayenne may have the following most common side effects: burning, skin irritation, and itching. It can also be very irritating to the nose, eyes, and throat. It is not recommended to apply capsicum on the skin around the eyes or sensitive skin.
Capsicum extract is usually safe for adults when taken orally, for a short period of time and in small amounts. Other side effects can include sweating, stomach irritation, flushing, and a running nose. It may be very unsafe if taken by mouth for long periods of time or in large doses. Sometimes this can cause more serious side effects like kidney or liver damage.
Capsicum extract is usually safe when used in the nose. However, one can suffer from burning pain, watery eyes, sneezing, and runny nose. Cayenne should not be taken by pregnant and breast-feeding women, but it can be applied to the skin.