An eyewash dispensing container comprising: a base presenting a storage cavity in which eyewash fluid is contained, said base including a neck that defines an opening in communication with the cavity to permit fluid to be discharged from the base; a fluid dispensing cap sealingly secured to the base in a covering relationship with the opening, said dispensing cap including a fluid outlet through which fluid is discharged from the storage cavity, said dispensing cap including a cap skirt circumscribing the neck of the base, with the cap skirt and neck cooperatively presenting interlocking structure (116, 50) to restrict removal of the dispensing cap from the base; said cap skirt of the dispensing cap and said neck of the base presenting respectively interengaging threads (58, 114) so that the cap is threadably secured to the base, and a removable closure sealingly overlying the dispensing cap to prevent fluid dispensing until removed, said removable closure providing tamper indication once removed so as to facilitate only single use of the container; said dispensing cap further including an eyewash cup with a circumferential splashguard that presents an ocular-engagement edge shaped to conform to a facial contour; said interlocking structure (116, 50) including a locking element projecting inwardly from the cap skirt and a collar projecting outwardly from the neck, with the locking element and the collar being spaced axially from the interengaging threads, said collar and said locking element presenting respectively interengaging surfaces that face in opposite, at least substantially axial directions so as to restrict the cap from unthreading from the base and from sealingly disconnecting from the base; said dispensing cap including a perimeter sidewall spaced radially from the circumferential splashguard; characterized by: said removable closure including a pair of spaced apart lower walls (185A, 185B) defining a cup abutment receiver therebetween, said cup abutment receiver receiving an upper edge of the perimeter sidewall to provide sealing engagement between the removable closure and the cap. a base presenting a storage cavity in which eyewash fluid is contained, said base including a neck that defines an opening in communication with the cavity to permit fluid to be discharged from the base; a fluid dispensing cap sealingly secured to the base in a covering relationship with the opening, said dispensing cap including a fluid outlet through which fluid is discharged from the storage cavity, said dispensing cap including a cap skirt circumscribing the neck of the base, with the cap skirt and neck cooperatively presenting interlocking structure (116, 50) to restrict removal of the dispensing cap from the base; said cap skirt of the dispensing cap and said neck of the base presenting respectively interengaging threads (58, 114) so that the cap is threadably secured to the base, and a removable closure sealingly overlying the dispensing cap to prevent fluid dispensing until removed, said removable closure providing tamper indication once removed so as to facilitate only single use of the container; said dispensing cap further including an eyewash cup with a circumferential splashguard that presents an ocular-engagement edge shaped to conform to a facial contour; said interlocking structure (116, 50) including a locking element projecting inwardly from the cap skirt and a collar projecting outwardly from the neck, with the locking element and the collar being spaced axially from the interengaging threads, said collar and said locking element presenting respectively interengaging surfaces that face in opposite, at least substantially axial directions so as to restrict the cap from unthreading from the base and from sealingly disconnecting from the base; said dispensing cap including a perimeter sidewall spaced radially from the circumferential splashguard; said removable closure including a pair of spaced apart lower walls (185A, 185B) defining a cup abutment receiver therebetween, said cup abutment receiver receiving an upper edge of the perimeter sidewall to provide sealing engagement between the removable closure and the cap.