What is the Lysine made from?

L lysine 600 mg. Monolaurin 600 Mg vegetable cellulose and rice flour

If you have issues swallowing pills can you break it?

They are capsules, not tablets.

Are any of the ingredients sourced from China?

There isn't a specific statement indicating one way or the other. I usually do research to check into what you are asking before determining on purchasing anything, then make my decision based on the results. There are times I do not get a difinitive answer so I look for all other criteria. If most of my criteria are met in comparison to other possible options, I make my decision from there. I do not save my research so I cannot answer specifically. What I may not have noticed before is that Natural Cure is now Palmara Health. You might look into that firstly. Also, since you asked, and looking closely, I noticed that along with the stamp indicating Made in USA, it states "with Global Materials". which could mean anywhere I think. If you get a difinitive answer, please comment in return and thank you ahead of time. I hope this helps.