The page's footer tells readers who take prescription medication for mood to speak with a doctor first.
Several herbal ingredients can influence how you feel, and some can have a calming or sedating effect. Mixing them with medications that act on mood or sleep can change how either behaves. The page notes that ashwagandha may interact with medications, and the product is positioned for stress, mood and sleep, which is the same territory those medications work in.
We cannot say that an interaction will occur, only that it is the kind of question your prescriber should answer.
Do not stop or reduce a mood medication to try a supplement. Ask your prescriber about the specific ingredient list, and if you decide to try it, tell them. Watch for changes such as unusual drowsiness, agitation or mood swings and contact your doctor promptly if they appear.