How do Cu 7 or Multiload 375 and Progestasert or LNG-20 differ in their  contraceptive action?

Dear student,
Please find below the solution to the asked query

1. Cu 7 or Multiload 375 are copper releasing contraceptives. They suppress sperm motility and affect the fertilising capacity of sperms. 
2. Progestasert or LNG-20 are hormone releasing contraceptives. They increase phagocytosis of sperm and affect their motility. They also make uterus unsuitable for implantation.

Hope this information will clear your doubts about the Cu 7 or Multiload 375 and Progestasert or LNG-20.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
 
Regards