Should I Ask A Woman With Nerve Pain From Mastectomy About Antidepressant Use Before Recommending Hypericum 30C?

Hi, I want to recommend to a woman who had a mastectomy and has nerve pain Hypericum 30C. Do I have to ask if she’s on antidepressants? I ve heard herbal St. Johnwort should not be taken with anti depressants but am assuming it’s not an issue with homeopathic doses?