If you employ the Sunday Start out, use non-hormonal back again-up contraception such as condoms and spermicide for the very first 7 days that you just just take Previfem®. You don't will need back-up contraception if you use the Day one Start off. All info on this site is furnished https://collinxkxpb.develop-blog.com/36789192/tri-previfem-generic-an-overview