Herbs, being used correctly, are very effective. Many people have allergies and every body is different and reacts different to many things (shoot, I have a friend allergic to grass). The problem is not with the use of herbs (ingested, inhaled, or topically); it is with the lack of knowledge on how you use them. Like prescription and over the counter medications, a plants make-up is of chemicals, compounds, and complexes that in some cases help with not only physical but mental needs along with many other uses. In the same aspect, you must use caution and very good common since before using any plants to fill a need. Common since and caution tells us not to take a medication before knowing how to use it, facts, warnings, and how it will help; that applies to herbs as well. Speaking with your doctor before using an herbal alternative is recommended, but with so many skeptics, some doctors will not help you [that is due to people just not having the correct information]. A qualified herbalist can help you in determining what can be good for you and provide a wider range of information regarding the herbal alternative way. A good one will also know how to approach a doctor with questions regarding herbal use and your current health.