Storage precautions for HPMC hollow capsules

HPMC (Hydroxypropyl Methylcellulose) hollow capsules, as a commonly used pharmaceutical excipient, have advantages such as plant origin, low allergy risk, and good stability. However, their storage must strictly follow specific conditions to prevent spoilage. The following are detailed precautions for storing HPMC hollow capsules:

1. Temperature control

Ideal range: It is recommended to store at a temperature of 15-25 ℃. Excessive temperature (such as exceeding 30 ℃) can cause the capsule shell to soften, adhere, and even deform; If the temperature is too low (such as below 10 ℃), it may make the capsule shell brittle and prone to rupture.

Seasonal adjustment: Avoid direct sunlight or proximity to heat sources (such as heating and equipment) in summer, prevent freezing in winter, and use a constant temperature warehouse if necessary.

2. Humidity management

Humidity range: The relative humidity should be controlled between 35% and 65%. Excessive humidity (such as over 70%) can cause capsules to absorb moisture and expand, leading to adhesion and dissolution; If the humidity is too low (such as below 30%), it may cause the capsule to lose water and become brittle.

Moisture prevention measures:

Use well sealed containers (such as double-layer polyethylene bags or glass jars) and add desiccants (such as silicone bags).

Avoid contact with damp items such as water and damp cloth, and keep the storage area dry and ventilated.

3. Avoid light and prevent oxidation

Light effect: HPMC capsules may undergo photodegradation under ultraviolet or strong light, leading to discoloration or performance degradation.

Storage requirements:

Store in a cool place and avoid direct sunlight.

Use opaque containers (such as brown glass bottles or aluminum foil bags) for packaging to reduce the risk of photo oxidation.

4. Pollution prevention and isolation

Clean environment: The storage area should be kept away from chemical pollutants (such as volatile solvents, acidic and alkaline substances), dust, and odor sources (such as fragrances and chemicals) to prevent cross contamination.

Independent storage: Avoid mixing with drugs, food, or other items that may release harmful substances. It is recommended to use dedicated shelves or cabinets.

5. Stacking and Handling Standards

Stacking height: The stacking height of capsule packaging boxes should not exceed 1.5 meters to prevent deformation of the bottom packaging under pressure.

Handling requirements: Handle with care, avoid severe vibration or throwing, and prevent damage to the capsule shell.

6. Validity period and rotation

Validity monitoring: HPMC hollow capsules usually have a validity period of 2-3 years, and the production date and shelf life need to be checked regularly, following the "first in, first out" principle for use.

Expired disposal: Expired capsules must be destroyed according to waste disposal regulations and cannot be used again.

7. Special scenario handling

Transportation requirements: Shockproof packaging should be used during transportation to avoid severe temperature and humidity fluctuations. In summer, refrigerated trucks can be chosen for transportation, while in winter, antifreeze is required.

Management after opening: The opened capsules should be used as soon as possible, and the remaining parts should be sealed and stored, with the opening date marked. It is recommended to use them up within one month.

8. Regular inspection and recording

Appearance inspection: Regularly inspect the capsules for adhesion, deformation, discoloration, or odor, and immediately isolate and handle any problems found.

Environmental monitoring: Record temperature and humidity data of the storage environment to ensure compliance with requirements.

Ledger management: Establish an inventory ledger to record purchases, usage, and remaining quantities for easy traceability.