Hello, will gripex hot max (3 and fewer sachets to keep the dose of paracetamol lower than 3g), sleep (taken once, occasionally), sinus ibuprom and regular ibuprom reduce the effectiveness of Belara contraceptive protection? I have read that vitamin C contained in gripex hot max may have an effect on the intensification of the effect of ethinyl estradiol, but this is an interaction that intensifies side effects, not reduces contraceptive effectiveness? I often use the painkiller ibuprofen for migraines.