Is there an expiry time for Dr Clark Parasite Cleanse capsules?

I moved and forgot I had a supply of Dr Clark Store parasite cleanse protocol. Three containers: Cloves in capsules, Green Black-Walnut Blend capsules, and Super W Blend. I have had them a couple of years and wonder if they go out of date? I cannot see an expiry date printed anywhere. I sent a query to the Dr Clark Store but had no response. Can anyone help and tell me if these are safe to take. They were not cheap so do not want to throw them away if possible. Thank you. Tweet