Some medicinal herbs can be foraged (which just means obtained from nature), but most of the botanicals used in herbal medicine are cultivated specifically for healthcare purposes. The great news is you can grow your own herbs. If you don't have a green thumb, there are plenty of businesses that sell quality medicinal herbs in the United States, (including us). Herbs are considered dietary supplements. Unlike prescription drugs, they can be sold without first being tested to prove that they are both safe and effective. For this reason, it's smart to be selective about the remedies you try and any herbs you purchase. Unfortunately, there are companies that produce supplements that contain impurities (however, we do not). So, do your homework when you're making decisions about where to buy herbs for medicinal use. This will help you not only ensure your safety but also get the best herbs available.