A receptacle for pharmaceutical packaging, the receptacle having an elongate barrel section and comprising a first aperture at a first end and a second aperture at a second end, wherein: a. the elongate barrel section has a direction of elongate extension and an axis in the direction of elongate extension; b. an axial position p is determined along the axis; c. the elongate barrel section extends from an axial position p A to an axial position p B, wherein the receptacle is adapted and arranged for ejecting a liquid pharmaceutical composition from the second end and wherein p B is closer to the second end than is p A; d. an elongate barrel section length L B is the distance between p A and p B; e. the receptacle has a side wall extending over the elongate barrel section, the side wall having an inner surface bordering an interior, the interior having a diameter; f. a layer of a lubricant is located on at least a part of the inner surface; g. at a given axial position p on the axis between p A and p B, the following: i. the thickness of the side wall, ii. the thickness of the layer, and iii. the diameter of the interior, are each determined as an angular mean in a cross-sectional plane perpendicular to the axis at the axial position p; h. a portion X of the axis extends from an axial position p 1 to an axial position p 2 such that the following criteria are satisfied: i. both p 1 and p 2 lie between p A and p B, ii. a portion length Lx is the distance between p 1 and p 2, iii. Lx is at least a quarter of L B, iv. the layer extends over the entire portion X, and v. a thickness t 1 of the layer at p 1 is less than a thickness t 2 of the layer at p 2; wherein p 1 is closer to p A than is p 2 and wherein the thickness of the layer increases monotonically over the portion from p 1 to p 2; i. criteria i., ii., iii. and iv.: i. The length L B is in the range from 3 cm to 20 cm; ii. The mean value of the diameter of the interior determined over the range p A to p B is in the range from 0.4 to 4 cm; iii. The mean thickness of the sidewall determined over the range p A to p B is in the range from 0.3 mm to 4 mm; and iv. The volume of the interior is in the range from 0.1 to 150 ml; are satisfied. a. the elongate barrel section has a direction of elongate extension and an axis in the direction of elongate extension; b. an axial position p is determined along the axis; c. the elongate barrel section extends from an axial position p A to an axial position p B, wherein the receptacle is adapted and arranged for ejecting a liquid pharmaceutical composition from the second end and wherein p B is closer to the second end than is p A; d. an elongate barrel section length L B is the distance between p A and p B; e. the receptacle has a side wall extending over the elongate barrel section, the side wall having an inner surface bordering an interior, the interior having a diameter; f. a layer of a lubricant is located on at least a part of the inner surface; g. at a given axial position p on the axis between p A and p B, the following: i. the thickness of the side wall, ii. the thickness of the layer, and iii. the diameter of the interior, are each determined as an angular mean in a cross-sectional plane perpendicular to the axis at the axial position p; i. the thickness of the side wall, ii. the thickness of the layer, and iii. the diameter of the interior, h. a portion X of the axis extends from an axial position p 1 to an axial position p 2 such that the following criteria are satisfied: i. both p 1 and p 2 lie between p A and p B, ii. a portion length Lx is the distance between p 1 and p 2, iii. Lx is at least a quarter of L B, iv. the layer extends over the entire portion X, and v. a thickness t 1 of the layer at p 1 is less than a thickness t 2 of the layer at p 2; wherein p 1 is closer to p A than is p 2 and wherein the thickness of the layer increases monotonically over the portion from p 1 to p 2; i. both p 1 and p 2 lie between p A and p B, ii. a portion length Lx is the distance between p 1 and p 2, iii. Lx is at least a quarter of L B, iv. the layer extends over the entire portion X, and v. a thickness t 1 of the layer at p 1 is less than a thickness t 2 of the layer at p 2; i. criteria i., ii., iii. and iv.: i. The length L B is in the range from 3 cm to 20 cm; ii. The mean value of the diameter of the interior determined over the range p A to p B is in the range from 0.4 to 4 cm; iii. The mean thickness of the sidewall determined over the range p A to p B is in the range from 0.3 mm to 4 mm; and iv. The volume of the interior is in the range from 0.1 to 150 ml; are satisfied. i. The length L B is in the range from 3 cm to 20 cm; ii. The mean value of the diameter of the interior determined over the range p A to p B is in the range from 0.4 to 4 cm; iii. The mean thickness of the sidewall determined over the range p A to p B is in the range from 0.3 mm to 4 mm; and iv. The volume of the interior is in the range from 0.1 to 150 ml;