What is the difference between using Oxytocin or Lutalyse with farrowing sows?

We just cannot get down to the nitty gritty
about these two different but somewhat same
meds used on Sows before or while or after
they farrow. I need help as I couldn’t flat out
grasp it and understand when it would be the
best time to use them. Thanks for some answers
I can understand.