Taking Folic Acid on MC

I've done many MCs and am currently on my 2nd day of 21. I'll be trying to conceive shortly after I finish the cleanse and am back to a regular, healthy diet. I was taking folic acid prior to this cleanse but stopped as I am generally a purist. However, I'm second guessing that and wondering if it would be ok if I continued to cleanse and started taking folic acid again. Any thoughts on this?