1. The use of hollow capsule shells
Solid drugs can be loaded to avoid the influence of moisture, air, and light, and can also mask the bitterness, odor and other bad odors of active ingredients.
2. The appearance of the capsule shell
The capsule shell consists of 2 overlapping shell flaps (cap and body). The caudal end of each lobe is rounded and closed, and the other end is open. The large-aperture capsule cap covers the small-aperture capsule body, and the sealing performance is good after locking.
There are eight capsule shell specifications, the most commonly used are 00#, 0#, 1#, 2#, 3#, 4#. The smaller the capsule shell number, the larger the volume.
There are many colors of the capsule shell, such as red and yellow, blue and white, dark and light green, golden yellow, red and white, transparent and so on.
So why are some capsules colored and the cap and body are different colors?
1. The colored capsule shell looks good on the senses and can hide the appearance of the medicine itself.
2. Color due to sunscreen. For some light-sensitive drugs, titanium dioxide can be added to the capsule as a sunscreen, so the color will appear.
3. The two-color capsule shell is easy to identify, and can distinguish capsules made by different production processes to avoid confusion.
4. Different colors are used to easily distinguish medicines. Because manufacturers use capsule shells of different colors, it is convenient to identify capsule bodies and capsule caps with different calibers, so as to avoid errors during mass production, resulting in high-speed assembly line failures and losses.
Why are some capsules transparent?
The transparent capsule shell is for the user to determine whether the capsule is granules or powder, which is convenient for use. In addition, after some capsules have deteriorated, the internal particles or powder have changed, which is also to remind users to pay attention to whether the inside of the capsule is safe and normal.
