A capsule for containing a substance from which a beverage can be produced, comprising: - a capsule body (12; 80) that comprises: ∘ a side wall (18; 81) - a direct-flow-preventing filter disc (14; 87), wherein the direct-flow-preventing filter disc (14; 87) has a circumferential edge zone which is in contact with the side wall (18; 81), wherein the capsule body (12; 80) has a charge of the substance in it, wherein the direct-flow-preventing filter disc (14; 87) delimits an upper side of the charge of substance, wherein a closure disc is secured to the capsule body (12; 80) to close it and to have a fluid injection needle pierce at a center position through the closure disc during a beverage extraction, wherein the direct-flow-preventing filter disc (14; 87) lies between the charge of substance and the closure disc, and wherein an injection chamber is delimited between the closure disc and the direct-flow-preventing filter disc (14; 87), characterized in that, a retainer (16; 90) is provided for securing the direct-flow-preventing filter disc (14; 87) in place in the capsule body (12; 80), wherein the direct-flow-preventing filter disc is of a larger diameter than the retainer, and wherein said circumferential edge zone of the direct-flow-preventing filter disc (14; 87) is trapped between said retainer (16; 90) and the side wall (18; 81), wherein a central hub (32; 92) is provided at a centre of the retainer (16; 90), spokes (30; 93) extending radially outwardly from the central hub (32; 92), the central hub (32; 92) forming a central blocking wall for preventing said fluid injection needle to pierce through the direct-flow-preventing filter disc (14; 87) and for blocking an injected jet of fluid during said beverage extraction. - a capsule body (12; 80) that comprises: ∘ a side wall (18; 81) ∘ a side wall (18; 81) - a direct-flow-preventing filter disc (14; 87), wherein the direct-flow-preventing filter disc (14; 87) has a circumferential edge zone which is in contact with the side wall (18; 81), wherein the capsule body (12; 80) has a charge of the substance in it, wherein the direct-flow-preventing filter disc (14; 87) delimits an upper side of the charge of substance, wherein a closure disc is secured to the capsule body (12; 80) to close it and to have a fluid injection needle pierce at a center position through the closure disc during a beverage extraction, wherein the direct-flow-preventing filter disc (14; 87) lies between the charge of substance and the closure disc, and wherein an injection chamber is delimited between the closure disc and the direct-flow-preventing filter disc (14; 87), wherein the direct-flow-preventing filter disc (14; 87) has a circumferential edge zone which is in contact with the side wall (18; 81), wherein the capsule body (12; 80) has a charge of the substance in it, wherein the direct-flow-preventing filter disc (14; 87) delimits an upper side of the charge of substance, wherein a closure disc is secured to the capsule body (12; 80) to close it and to have a fluid injection needle pierce at a center position through the closure disc during a beverage extraction, wherein the direct-flow-preventing filter disc (14; 87) lies between the charge of substance and the closure disc, and wherein an injection chamber is delimited between the closure disc and the direct-flow-preventing filter disc (14; 87), characterized in that, a retainer (16; 90) is provided for securing the direct-flow-preventing filter disc (14; 87) in place in the capsule body (12; 80), wherein the direct-flow-preventing filter disc is of a larger diameter than the retainer, and wherein said circumferential edge zone of the direct-flow-preventing filter disc (14; 87) is trapped between said retainer (16; 90) and the side wall (18; 81), wherein the direct-flow-preventing filter disc is of a larger diameter than the retainer, and wherein said circumferential edge zone of the direct-flow-preventing filter disc (14; 87) is trapped between said retainer (16; 90) and the side wall (18; 81), wherein a central hub (32; 92) is provided at a centre of the retainer (16; 90), spokes (30; 93) extending radially outwardly from the central hub (32; 92), the central hub (32; 92) forming a central blocking wall for preventing said fluid injection needle to pierce through the direct-flow-preventing filter disc (14; 87) and for blocking an injected jet of fluid during said beverage extraction.