The drug Gonal-F is one of the key agents in IVF and ovulation stimulation protocols, so the issue of its safety is extremely acute. Improper conditions can lead to loss of biological activity of the active substance, which jeopardizes the entire treatment cycle. The basic rule dictated by manufacturers is that the medicine must be stored at a temperature of 2 to 8 degrees Celsius.
Many patients mistakenly believe that any cold place in the refrigerator will do, however thermosensitive hormones they require a stable climate without sudden changes. In this article, we will analyze in detail in which zone of the refrigerator it is better to place the packaging, what to do in case of accidental freezing, and how to properly transport the drug if you are going to travel.
Maintaining the temperature regime is not just a formality, but a necessary condition for keeping recombinant FSH in an active state. Violation of storage rules can lead to the fact that an expensive drug turns into a useless liquid that is not capable of causing follicle growth. Let's look at the technical nuances of placing medications in a household refrigerator.
Optimal temperature conditions and storage areas
The main requirement of the instructions is to maintain the temperature in the range 2–8 °C. This is the standard mode for the main chamber of most modern refrigerators, but not for all their compartments. It is critically important to avoid places where the temperature can drop below zero or, conversely, rise above 8 degrees due to the operation of the compressor or the opening of the door.
The ideal place to place a bottle or syringe pen is middle shelf the main chamber. It is here that the temperature regime is most stable and uniform. The refrigerator door, where medications are often placed, is the worst choice, since each time you open the temperature there changes sharply, which is detrimental to follicle-stimulating hormone.
⚠️ Attention: Never store Gonal-F in the quick freeze compartment or directly at the back the walls of the refrigerator where the evaporator is located. There, the temperature may drop below 0 °C, which will lead to irreversible destruction of the protein structure.
If your refrigerator is equipped with the No Frostfunction, the flow of cold air may be too intense in some areas. Check the temperature with a thermometer in the place where you plan to store the drug before placing the package there. Climate stability is more important than an absolute minimum temperature.
Is it possible to freeze the drug Gonal-F
One of the most common questions that arises from patients: what to do if the drug accidentally freezes? The answer is clear: freezing is prohibited. The protein structure of the hormones contained in Gonal-F crystallizes and is destroyed when frozen. After defrosting, the drug loses its therapeutic effectiveness.
If you find that the packaging was in the freezer or in the refrigerator area where the temperature dropped below zero, you cannot use this medication. Even if visually the liquid in a syringe pen or bottle looks clear and without sediment, this does not guarantee preservation of its properties. The risk of introducing an ineffective drug during the stimulation period is too high.
What happens to the protein when frozen?
When freezing, the aqueous base of the drug turns into ice, increasing in volume. This leads to the breaking of the molecular bonds of the protein (denaturation). Visually this may not be noticeable, but the biological activity is completely lost, and the drug becomes useless for stimulating the ovaries.
It is also important to ensure that the drug does not touch the ice crust or “snow” on the walls of the refrigerator. Even short-term contact with a surface at a temperature below zero can locally freeze part of the solution. Therefore, always keep Gonal-F in the original cardboard box, which serves as an additional buffer.
Shelf life before and after opening
The shelf life of Gonal-F directly depends on whether the integrity of the packaging has been compromised and whether the drug has been used. When closed, subject to temperature control 2–8 °C, the medication retains its properties until the date indicated on the package. Usually this is 2-3 years from the date of production.
The situation changes dramatically after the first use or the seal is broken. For multi-dose pens and vials, the shelf life is reduced after the rubber stopper is punctured. As a rule, the manufacturer allows the drug to be used for 28 days after the first opening, but only if stored in the refrigerator.
| Packaging condition | Temperature conditions | Maximum period storage | Conditions |
|---|---|---|---|
| Closed packaging | 2–8 °C | Until the date on the box | Protection from light |
| After first use | 2–8 °C | 28 days | Do not freeze |
| Outside the refrigerator (up to 25 °C) | Up to 25 °C | No more than 28 days* | Total including storage in the refrigerator |
| Frozen drug | - | 0 days | Dispose of |
There is an important nuance: the total storage time outside the refrigerator (at temperatures up to 25 °C) should not exceed 28 days. This means that if you kept the pen at room temperature for 3 days and then put it in the cold, the total shelf life of the drug after opening will still expire 28 days from the moment of the first injection or removal from the cold.
☑️ Control of expiration dates
Transportation and storage outside refrigerator
The patient’s life is not limited to home, and there is often a need to take the drug with you on a trip or to work. Gonal-F allows storage at temperatures up to 25 °C, but with time restrictions. The main rule: the total time spent outside the refrigerator should not exceed 28 days in total.
For transportation, it is best to use special thermal containers or cooler bags with refrigerants. However, be careful: the refrigerant (cold accumulator) should not come into contact with the packaging of the drug, so as not to freeze it. Always lay a layer of fabric or use a standard cardboard box as an insulator.
⚠️ Attention: Do not leave the drug in a car in direct sunlight, even for a short time. The temperature inside the cabin can quickly exceed the permissible limits
25 °C, which will lead to damage to the hormonal drug.
If you are traveling by plane, Gonal-F must be taken in hand luggage. In the luggage compartment, the temperature can drop below zero, which is guaranteed to spoil the medicine. Carry a prescription or doctor's note with you in case of security questions, although drugs in original packaging usually do not raise questions.
How to identify a spoiled drug
Visual inspection of the solution before each injection is a mandatory safety procedure. The Gonal-F solution in good condition should be transparent and colorless. Any changes in appearance indicate a violation of storage conditions or expiration of the shelf life.
If you notice flakes, sediment, cloudiness or color changes in the solution, using such a drug is strictly prohibited. Even if the expiration date has not yet expired, a violation of the temperature regime could trigger the process of protein degradation. The introduction of such a solution may cause an unpredictable reaction in the body or simply have no effect.
It is also worth paying attention to the integrity of the packaging. If the rubber stopper of the bottle is damaged, deformed or has a trace of a puncture (more than the permitted amount), the sterility of the solution is at risk. In such cases, the risk of infection outweighs the potential benefit of the injection.
Frequent errors when storing at home
Despite the presence of instructions, patients often make common mistakes that can cost the effectiveness of treatment. One of the most common is storing the drug on the top shelf of the refrigerator, where cold air accumulates, or in the “fresh zone”, where the temperature can be close to zero.
Another mistake is storing it together with products with a strong odor. Although the bottle is sealed, the cardboard packaging can absorb odors, and frequent opening of the refrigerator for food disrupts the temperature conditions for storing medicines. It is better to allocate a separate shelf or container for medications.
Do not forget that manufacturers' instructions and storage conditions may vary slightly depending on the specific form of release (pen, vial, multi-dose). Always check the package insert for your specific package as concentrations and stabilizers may vary.
⚠️ Note: Refrigerator specifications and pharmaceutical company recommendations may be subject to change. Always check the current instructions in the packaging of your drug, especially if you have switched to a new series or release form.
FAQ: Answers to questions about storing Gonal-F
What to do if Gonal-F has been left for a day at room temperature?
If the room temperature does not exceed 25 °C, then storage for 24 hours is acceptable. However, this day will count toward the total 28-day storage limit outside the refrigerator. After this, the drug must be returned to the refrigerator.
Can Gonal-F be stored in the freezer if the temperature there is -2 degrees?
No, it is not. Even a slight decrease in temperature below 0 °C can lead to crystallization of the solution and destruction of the protein. Storage is possible only in the main chamber of the refrigerator at a temperature above 2 °C.
How to properly dispose of a spoiled or used drug?
Used syringe pens and needles are class B medical waste. They must be collected in a special container for sharps (container for sharps), and then taken to medical waste disposal points or clinic. Throwing needles into a regular trash bin is prohibited.
Does light affect the storage of Gonal-F?
Yes, the drug is sensitive to light. That is why it must be stored in the original cardboard box, which protects the bottle or pen from direct sunlight and artificial light.
Can Gonal-F be used if it has been in the refrigerator for 30 days after opening?
No, after 28 days from the date of first use, the sterility of the solution and the activity of the active substance are not guaranteed. Using an expired drug may be ineffective or dangerous.