I wasn't told to strain it (which might be part of the reason I haven't used it!!) - merely to consume however many drops, depending on whether its for me or DD3. It was suggested to me to mix it with juice or something. I would have thought that if you strained it, ie removed the piece of placenta, then you have a finite use of it - ie it runs out and that's it. I was told to leave the piece of placenta in it and just top it up with vodka whenever the level got down below a certain mark on the bottle, meaning that I could effectively have an almost endless supply for years to come.