Our NEW PM Burn pairs perfectly with our best-selling Morning Burn supplement! The PM Burn, however, works a bit differently. Our PM Burn is NOT an appetite suppressor; instead, it is a Seratonin booster. Seratonin is a neurotransmitter in the brain that is produced when we are happy. Naturally boosting serotonin levels will leave you feeling happy & satisfied WITHOUT reaching for that late-night snack–leading to a reduced desire to snack at night!