A cannula (1) for dispensing fluid products, particularly for vaginal and rectal applications, comprises: a tubular body (2) for containing a fluid product (P), having a first extremity (2a), at which a dispenser opening (3) is formed, and a second open extremity (2b), opposed to the first extremity (2a). A closing body (5) which is associable with the tubular body (2) to close the second extremity (2b). The closing body comprises a first element (6) at least partially insertable through the second extremity (2b) and suitable for acting as a sliding piston inside the tubular body (2), and a second annular body, that functions a tamper indication seal. A cover cap (4) which can be fitted on the tubular body (2) to close the dispenser opening (3) and which is made in a single body piece. Longitudinal score lines divide the cover cap into a plurality of first sections and a single second section. Fold lines extend longitudinally along the first sections. Single second section is torn away from the body along the weakened score lines, and the first sections are bent over the fold lines to form a push rod of reduced transverse dimensions. Push rod is insertable into tubular body to slide first section of closing cap along interior of cannula to discharge fluid product.膣および直腸に特に適用される流動製品投薬用カニューレ（１）は、投薬口（３）が設けられた第１端部（２ａ）と第１端部（２ａ）に対向する第２開口端部（２ｂ）とを有し流動製品（Ｐ）を収容する少なくとも管状体（２）と、前記管状体（２）に結合して前記第２端部（２ｂ）を閉じると共に前記第２端部（２ｂ）を介して少なくとも一部が挿入可能であり前記管状体（２）の内部の摺動ピストンとして働くのに適した少なくとも第１要素（６）を有する閉鎖体（５）と、前記管状体（２）に嵌め込まれて前記投薬口（３）を閉じることができ前記管状体（２）に挿入可能で前記第１要素（６）を押して前記管状体（２）に沿って摺動させる押し棒（２５）を有する単一体で作られるカバーキャップ（４）とを備える。
