Whichever type you decide to use it's always best to get correct dosages from an experienced herbalist. Also since Chamomile is considered a uterine stimulant, women who are pregnant should stay away from it as it might cause an abortion. The effects of Chamomile on breast feeding are also as yet unknown and so should be avoided then as well.
If taking various medications for an illness, remember to first consult your doctor before taking Chamomile, as drug interactions haven't yet been verified properly.
Generally chamomile is taken in the form of an herbal tea infusion or as a liquid extract. Capsules, tablets, mouth washes, tinctures and Chamomile baths are also a number of different ways in which you can use the herb.
The most common usage, in the form of a tea or an infusion, is also easy to prepare at home by yourself. Drinking Chamomile tea is a great way to relax after a tiring day and can quickly become habit forming (in a good way of course!). And since Chamomile is easy enough to grow yourself it makes this herbal remedy an easy option if you grow to truly like it.
It should also be noted that if you're allergic to plants in the Asteraceae (Compositae) family, examples of these being Ragwort, Asters and Chrysanthemums you should avoid Chamomile in any form as this may bring about skin allergies and difficulty in breathing amongst other symptoms.