While herbal remedies are generally safe, they can cause side effects or interact with other medications. Common side effects might include allergic reactions or gastrointestinal upset. Herbs like agrimony might also interact with medications due to their astringent properties. It’s important to start with small doses to test for any adverse reactions and consult a healthcare provider, especially if you are taking other medications or have an underlying health condition. Always ensure the herbs are sourced from reputable suppliers to avoid contaminants that could cause harm.