There is no such thing as a natural tranquilizer for humans; however, there are various substances that create a natural tranquil and sedative effect on humans, such as Kava Kava, chamomile, fennel, motherwort, passionflower, magnesium, St. John's wort and skullcap, according to the Calm Clinic and Psychology Today. These natural sedatives can help calm a person down and eliminate anxiety or nerves from stress.
People that need help beating insomnia, depression, rapid heartbeat and a general restless feeling can take these substances without as much worry of negative side effects (these substances tend to have fewer and less dangerous side effects) that can come with modern medications, reports the Calm Clinic and Psychology Today.
One of the most commonly used substances is magnesium, reports Psychology Today, for its calming effects. Most people have a magnesium mineral deficiency in their diet due to the loss of magnesium in the soil and therefore in the foods that people eat. People also tend to eat less of the green vegetables, seafood and organ meats that contain magnesium. Magnesium works by helping the body complete biochemical reactions that help it to function optimally, including feeling calm and stable. There have been studies showing that magnesium treatment can even reverse depression completely.