Can I take Benadryl (diphenhydramine), valerian and melatonin together every day?

Thoughts.. Valerian, has the possibility of causing some drowsiness, so i would be careful when taking that with benadryl, (diphenhydramine) which can also cause drowsiness. If someone's been taking it for a long time and they haven't had any significant reactions then it's probably okay. But like almost all the supplements out there, they haven't been rigorously tested for safety and interactions so it's buyer beware.