The ornamental design for a pharmaceuticalinhaler, as shown and described.
FIG. 1 is a view from the rear, left side, and above;
FIG. 2 is a view from the front, right side, and below;
FIG. 3 is a view from the rear;
FIG. 4 is a view from the front;
FIG. 5 is a view from left side;
FIG. 6 is a view from right side;
FIG. 7 is a view from above; and,
FIG. 8 is a view from below.
The broken line showing of the pharmaceutical inhaler housing in FIGS. 1 and 2 is for illustrative purposes only and forms no part of the claimed design.