Drug Longidaza is an effective enzyme agent, widely used in gynecology, urology and surgery for the resorption of adhesions and scars. However, its therapeutic effectiveness directly depends on compliance with storage conditions, since the active substance is a protein molecule that is sensitive to external factors. Violation of the temperature regime or exposure to light can lead to irreversible denaturation of the protein, which will make treatment useless, and in some cases, dangerous to the patient’s health.
Many patients wonder where exactly in the refrigerator ampoules or suppositories should be placed, and whether it is possible to allow a short-term increase in temperature during transportation from the pharmacy. Answering these questions is critical because improper storage will negate the cost of the drug and the time spent on therapy. In this article we will analyze in detail the temperature requirements, features of placement in different types of refrigerators and actions in case of accidental violation of storage conditions.
Compliance with the rules of the cold chain is not just a formality, but a necessary condition for maintaining pharmacological properties. bovhyaluronidase azoximer. Even short-term freezing or, conversely, overheating above permissible values can change the structure of the active component. Therefore, each patient undergoing treatment must clearly understand how to organize proper storage of the medicine at home.
Temperature conditions and environmental requirements
The main factor determining the stability of Longidase is a strictly defined temperature range. According to the manufacturer's official instructions, the drug should be stored at a temperature from 2 to 8 degrees Celsius. This is the standard mode for most refrigerators intended for storing food and medicine. Going beyond this range, even for a short time, creates a risk of destruction of complex protein bonds.
Particular attention should be paid to the lower temperature limit. It is strictly forbidden to freeze the drugas ice crystals formed when the solution or suppository mass freezes, break the molecular bonds of the active substance. After thawing, the drug may not be visually different from the original, but its therapeutic activity will be completely or partially lost. Therefore, placing the medicine close to the back wall of the refrigerator, where local freezing can occur, is unacceptable.
The second critical parameter is protection from light. The active component of the drug is sensitive to ultraviolet radiation and bright artificial light. That is why ampoules and blisters with candles are packed in opaque cardboard boxes. It is not recommended to remove the drug from the original packaging for permanent storage in the refrigerator, since the cardboard serves as additional protection from light exposure when opening the refrigerator door.
⚠️ Attention: Do not store the drug on the refrigerator door unless there is a special closed compartment for medications. Frequently opening the door leads to temperature fluctuations, which negatively affects the stability of the protein solution.
Optimal placement in the refrigerator
The choice of a specific shelf or compartment in the refrigerator is critical to maintaining a stable temperature. In modern models of refrigeration equipment, the distribution of cold can differ significantly. In systems No Frost cold air circulates throughout the chamber, creating zones with different temperatures, while in drip systems it is coldest at the back wall and at the bottom.
The ideal place to store Longidaza is the middle shelf of the refrigerator, away from the back wall and side walls. It is here that the temperature regime is most stable and meets the required 2–8 °C. Placing the drug in close proximity to a vaporizer or fan may result in local hypothermia, which is equivalent to freezing. You should also avoid proximity to products that have a strong odor, although the packaging protects the drug, extra caution will not hurt.
If your refrigerator has a special “Fresh Zone” or a compartment for storing meat and fish, where the temperature is maintained at about 0 degrees, place the drug there not recommended. The risk of accidental freezing in such areas is too high, especially if the refrigerator is not fully loaded. It is better to choose a standard shelf for ready-made products, having first made sure with a thermometer that the temperature there does not fall below +2 °C.
Storage of different dosage forms
Longidaza is available in two main forms: lyophilisate for preparing a solution (powder in bottles) and suppositories (suppositories). Although the temperature requirements for them are identical, there are nuances in organizing their storage. Powder in sealed vials is less sensitive to short-term fluctuations in humidity, but it also requires strict adherence to temperature conditions to maintain enzyme activity.
Suppositories that have a fat base are more demanding on temperature stability. When the temperature rises above +8 °C, the candle mass may soften, deform or delaminate, which will make administration of the drug difficult or impossible. When storing candles, it is important to ensure that they do not touch each other in the package to avoid sticking if the temperature does rise briefly.
After opening the bottle of powder and preparing the solution, the drug must be used immediately. Storage of the prepared solution is prohibited, since in liquid form the enzyme quickly loses its activity and can become a breeding ground for bacteria. If the solution remains after injection or instillation, it should be disposed of and not put back into the refrigerator for the next use.
☑️ Checking storage conditions
Table of storage conditions and terms
For ease of perception We have compiled a summary table for information on storage conditions and expiration dates of various forms of the drug. These data are relevant for the original drug, subject to storage rules.
| Form of release | Temperature conditions | Shelf life | Special instructions |
|---|---|---|---|
| Lyophilisate (powder) | 2–8 °C | 24 months | Keep away from light, do not freeze |
| Suppositories (candles) | 2–8 °C | 24 months | Control the hardness of the base |
| Cooked solution | Do not store | 0 hours | Use immediately after preparation |
| Packaging (general) | 2–8 °C | According to the expiration date on the package | Keep in cardboard box |
If the drug has been subjected to freezing or prolonged heating, its expiration date is automatically canceled, regardless of the date stamped on the box. Always check the integrity of the packaging and the appearance of the drug before starting treatment.
Transportation and temporary absence of cold
A frequent problem for patients is the delivery of the drug from the pharmacy to their home, especially in hot or cold seasons. In summer, the ambient temperature can significantly exceed the permissible +8 °C. For transportation, it is recommended to use special thermal containers or cooler bags with refrigerants (cold accumulators).
When using cold accumulators, it is important not to put the drug in direct contact with the ice element to prevent local freezing. Ampoules or candles should be wrapped in cloth or paper and placed in the center of the container. The time for safe transportation without additional cooling in the summer should not exceed 30–40 minutes, but it is better to minimize this interval.
⚠️ Attention: In winter, the danger is not only heat, but also cold. At temperatures below 0 °C, the drug may also deteriorate. When transporting in winter, hide the bag with the medicine under your outerwear or use a thermal bag to protect against hypothermia.
What to do if the drug has been out of the refrigerator for more than 2 hours?
If the drug has been at room temperature (up to +25 °C) for more than 2 hours, its further use is not recommended. The protein structure could begin to break down. Visually this may not be noticeable. The risk of having an ineffective treatment or an allergic reaction to the altered protein is too great. It is better to consult a doctor about replacing the drug.
Signs of a spoiled drug
How to determine that storage conditions have been violated and the drug has become unusable? In the case of lyophilisate (powder), visual diagnosis is difficult, since the powder may remain white or yellowish even after loss of activity. However, if you notice that the powder in a sealed bottle has been compressed into a single lump or has changed color to a darker one, you cannot use it.
With suppositories the situation is simpler. If the candles have lost their torpedo-shaped shape, stuck together inside the blister, have an uneven color or oily spots on the surface, this indicates a violation of the temperature regime. The fat base could melt and solidify again, changing its structure. The administration of such a drug can be painful and ineffective.
A solution prepared from a low-quality lyophilisate may have a cloudy sediment that does not disappear after shaking, or an unusual color. Normally, the solution should be transparent or slightly opalescent, without foreign inclusions. Any doubts about the quality of the drug should be a reason to refuse its use.
Frequently asked questions (FAQ)
Can Longidaza be stored in the freezer to extend the period?
No, storing Longidaza in the freezer is strictly prohibited. Freezing leads to the destruction of the protein structure of the active substance (bowhyaluronidase azoximer). After defrosting, the drug will lose its medicinal properties and therapy will become useless. Storage temperature is strictly limited to the range from +2 to +8 °C.
What should I do if I accidentally left the drug at room temperature overnight?
Short-term storage at room temperature (up to +25 °C) for one night, as a rule, does not lead to a critical loss of activity if the drug is not heated by direct sunlight or a battery. However, the stability of the protein enzyme under such conditions is not guaranteed by the manufacturer. If possible, replace the drug to be sure of the effectiveness of the treatment.
Is it necessary to remove candles from the blister before storing in the refrigerator?
No, removing candles from the aluminum blister and cardboard box before storage is not necessary and is even harmful. The packaging protects suppositories from light, moisture and mechanical damage. In addition, the expiration date and series of the drug are indicated on the blister and box, which is important for control.
Is it possible to use Longidaza if it has changed the color of the powder?
If the lyophilisate in the bottle has changed color (for example, it has become dark yellow or brown) or if turbidity has appeared in the ampoule with the solvent, such a drug cannot be used. A change in color indicates chemical destruction of the substance. This can be hazardous to health.
Where is the best place to keep a thermometer to monitor the temperature?
The thermometer should be placed on the same shelf where the drug is stored, preferably next to the Longidase package, but not pressed closely against it. This will allow you to control exactly the temperature at which the medicine is located, and not the average temperature in the refrigerator compartment.