SAFFLOWER VS APPLE CIDER SUPPLEMENT

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HI MFP... I HAVE BEEN TAKING APPLE CIDER VINEGAR COMPLETE FROM GNC. I LOVE THE B6 IN IT. MY SISTER JUST STARTED TAKING XTREME TRIM SAFFLOWER SUPPLEMENTS (VITAMIN WORLD HAS IT) SHE SAYS "SAFFLOWER HELPS TO PROMOTE WEIGHTLOSS.

DOES ANYONE HAVE ANY IDEA WHICH IS BETTER?
CAN SOMEONE GIVE ME MORE INFO!