Container with a cap opening indicator comprising a container with a neck, a nozzle installed at the container neck and a cap detachably connected to the nozzle through a screw connection, the opening indicator interacting with the nozzle and the container cap and being moveable from a closed position to an open position, wherein: - the cap is provided with a recess where the opening indicator is located in the closed position, - the cap kinetically interacts with the opening indicator enabling them to shift relative to each other, - a backstop is mounted between the opening indicator and the cap, - an upper part of the opening indicator is suitable for the application of information signs, - a middle part of the opening indicator is designed as guide elements which interact with the cap, - a bottom part of the opening indicator is designed as a working member that interacts with the nozzle, - upon first opening of the container, the cap moves upwards in the open position along the screw connection, the working member of the opening indicator does not rotate relative to the container due to coupling elements and the opening indicator shifts upward with respect to the cap along the guide elements from the closed position to the open position. - the shift of the opening indicator leads to an irreversible change of the cap appearance through emergence of the upper part of the opening indicator above an upper part of the cap, - with the opening indicator in the open position, the backstop retains the opening indicator in the open position, prevents the upper part of the opening indicator from moving down into the recess and thereby prevents the opening indicator from returning to the closed position without destroying the elements of the cap. - the cap is provided with a recess where the opening indicator is located in the closed position, - the cap kinetically interacts with the opening indicator enabling them to shift relative to each other, - a backstop is mounted between the opening indicator and the cap, - an upper part of the opening indicator is suitable for the application of information signs, - a middle part of the opening indicator is designed as guide elements which interact with the cap, - a bottom part of the opening indicator is designed as a working member that interacts with the nozzle, - upon first opening of the container, the cap moves upwards in the open position along the screw connection, the working member of the opening indicator does not rotate relative to the container due to coupling elements and the opening indicator shifts upward with respect to the cap along the guide elements from the closed position to the open position. - the shift of the opening indicator leads to an irreversible change of the cap appearance through emergence of the upper part of the opening indicator above an upper part of the cap, - with the opening indicator in the open position, the backstop retains the opening indicator in the open position, prevents the upper part of the opening indicator from moving down into the recess and thereby prevents the opening indicator from returning to the closed position without destroying the elements of the cap.