While herbs can offer numerous health benefits when added to teas, it's important to note that some individuals may experience adverse effects or allergic reactions to certain herbs. For example, some herbs may interact with medications or exacerbate existing health conditions. Consuming large quantities of certain herbs in tea form may also lead to digestive discomfort or other adverse reactions. It's crucial to research potential side effects and consult with a healthcare professional before incorporating new herbs into your tea regimen, especially if you have any pre-existing health concerns or are pregnant or breastfeeding.