Any interactions between lotrel and the herbal extract Hawthorne?

[Ben]

I am wondering if there are any interactions between the prescription drug Lotrel (Amlodipine/benazepril), which is a calcium channel blocker combined with a angiotensin converting enzyme inhibitor and its potential interactions with the herbal extract Hawthorne. Please cite exact implications and studies showing interactions between these drugs. Other prescription drugs with a similar purpose would be fine compared to Hawthorne also. Just provide all the information you can with resources.