A safety capsule for a container, comprising: i) a cap for closing the container, said cap being made of a plastic material and comprising a thread for connection to the container and also comprising an intactness band designed to be connected with the container; in a configuration wherein the band is intact, said cap being a single monolithic body; ii) a cover for said cap, said cover comprising a base and a lateral wall that extends from said base; said base and said lateral wall overlying said cap, said base being at the opposite end with respect to a zone of the capsule in which the intactness band is located; iii) a press-fit engagement means that sets said cap and said cover into operative communication, enabling transmission of motion from the cover to the cap for the purpose of making it possible to unscrew said cap; iv) means for preventing extraction of the cover from the cap, comprising a first connecting means for connecting the cover to the cap; said engagement means and said first connecting means being at least partly incorporated in said cap and cover; v) means for re-closing the cap on the container after it has been opened, comprising: - at least a first flexible tab incorporated in the cap and projecting towards the lateral wall of the cover; said first tab surmounting a first part of the cap, a first concavity being wedged between the first tab and said first part of the cap; - a second flexible tab projecting from the lateral wall of the cover towards the cap; the second tab surmounting one zone of the lateral wall of the cover, a second concavity being wedged between said second tab and said zone of the lateral wall; a first direction of rotation of the cover determining the simultaneous insertion of the first tab in the second concavity and the insertion of the second tab in the first concavity so as to enable the transmission of motion from the cover to the cap, and the cap to be screwed onto the container as a result; a second direction of rotation of the cover determining the sliding of the first tab over the second tab; said intactness band being connected to remaining parts of the cap by means of flexible bridges, said intactness band comprising a strip and a plurality of projections; said purality of projections being separated from each other and extend from the strip in succession side by side along a circumferential line; wherein said plurality of projections project towards the inside of the capsule and together with the strip, define a step that identifies a seat for housing part of the container. i) a cap for closing the container, said cap being made of a plastic material and comprising a thread for connection to the container and also comprising an intactness band designed to be connected with the container; in a configuration wherein the band is intact, said cap being a single monolithic body; ii) a cover for said cap, said cover comprising a base and a lateral wall that extends from said base; said base and said lateral wall overlying said cap, said base being at the opposite end with respect to a zone of the capsule in which the intactness band is located; iii) a press-fit engagement means that sets said cap and said cover into operative communication, enabling transmission of motion from the cover to the cap for the purpose of making it possible to unscrew said cap; iv) means for preventing extraction of the cover from the cap, comprising a first connecting means for connecting the cover to the cap; said engagement means and said first connecting means being at least partly incorporated in said cap and cover; v) means for re-closing the cap on the container after it has been opened, comprising: - at least a first flexible tab incorporated in the cap and projecting towards the lateral wall of the cover; said first tab surmounting a first part of the cap, a first concavity being wedged between the first tab and said first part of the cap; - a second flexible tab projecting from the lateral wall of the cover towards the cap; the second tab surmounting one zone of the lateral wall of the cover, a second concavity being wedged between said second tab and said zone of the lateral wall; - at least a first flexible tab incorporated in the cap and projecting towards the lateral wall of the cover; said first tab surmounting a first part of the cap, a first concavity being wedged between the first tab and said first part of the cap; - a second flexible tab projecting from the lateral wall of the cover towards the cap; the second tab surmounting one zone of the lateral wall of the cover, a second concavity being wedged between said second tab and said zone of the lateral wall; a first direction of rotation of the cover determining the simultaneous insertion of the first tab in the second concavity and the insertion of the second tab in the first concavity so as to enable the transmission of motion from the cover to the cap, and the cap to be screwed onto the container as a result; a second direction of rotation of the cover determining the sliding of the first tab over the second tab; said intactness band being connected to remaining parts of the cap by means of flexible bridges, said intactness band comprising a strip and a plurality of projections; said purality of projections being separated from each other and extend from the strip in succession side by side along a circumferential line; wherein said plurality of projections project towards the inside of the capsule and together with the strip, define a step that identifies a seat for housing part of the container.