Herbal teas are considered the better sleep inducers than the black and green teas. They lack the tea leaves present in the black and green teas. Better to avoid the caffeine and go for herbal teas.

Tea is the best for a smoothening night after a tiring day. The cozy sleep it gives will create the craving. Instead of caffeine filled teas, it is advisable to go for the herbal teas. They are very natural.

The herb like chamomile is used as tranquilizers. Though it is not clinically proven the chamomile tea is found to be a natural sleep inducer. A 2010 study of the herb said that, despite a lack of clinical trials, "chamomile is widely regarded as a mild tranquilizer and sleep inducer." 

Valerian is another ingredient that is believed to help in the sleep-related problems. An article from the journal Sleep Medical Reviews published in the year 2007 explained about the valerian plant that, "evidence about the effectiveness of the herb is inconclusive".

It also said that the herb in not harmful for consumption and those who believe the myth about its sleep inducing characteristics could always go on consuming it.

Passionflower is an herb that helps to get a good sleep and it is proven. The passion flower tea has helped people with sleep disturbances a lot. It is found to be better and effective than the placebo. Studies have confirmed about the same. 

The next herbal ingredient is Lavender. Lavender is known for its sleep and relaxation characteristics. According to a study by the International Clinical Psychopharmacology in 2010, Lavender oil has very influential property over the quality and quantity of sleep. However, the effect of lavender as a tea is not known.

So, when you expect an undisturbed sleep it is always better to go for herbal teas and stay away from the kicks of caffeine at night.