The sweltering summer heat is unbearable. People are seeking cool places to escape the heat, but don't forget to protect your home medicines from the summer heat too.High temperatures, humidity, and strong sunlight can cause medications to deteriorate quickly. Open your home medicine cabinet now to identify heat-sensitive items and find a safe, cool storage spot for them!
Experts remind us that medications and herbal remedies in home medicine cabinets also require "heat protection." For every 10°C increase in temperature, the chemical reaction rate of drugs accelerates by 2 to 4 times.Both Western and traditional Chinese medicines require storage away from light and heat. Herbal medicines especially need protection from insects and mold. It's advisable to regularly inventory and organize your home medicine cabinet, discarding expired medications promptly. Particular attention should be paid to medicines stored in small pill boxes. If new pills are added before the existing ones are finished, the newly added pills may be consumed faster since they sit on top. Meanwhile, the older pills may remain compressed at the bottom, leading to prolonged storage and eventual expiration or deterioration.
Expired Medications Can Cause Poisoning
While not common, poisoning from expired medications does occur. One patient experienced poisoning after taking expired Niu Huang Jie Du Pills and required emergency hospital treatment.Experts explain that realgar in Niu Huang Jie Du Pills and An Gong Niu Huang Pills primarily contains arsenic disulfide, which has inherent toxicity. When subjected to high temperatures during calcination, it readily forms the more toxic arsenic trioxide (commonly known as arsenic trioxide). Thus, when medications expire, become damp, or are exposed to high temperatures, the realgar undergoes chemical reactions that easily convert it into arsenic trioxide, leading to drug poisoning.
Many households now keep emergency heart pills, cold remedies, digestive aids, and other medications in their medicine cabinets. Elderly individuals, in particular, tend to "hoard" medicines, using them as needed without checking expiration dates or even examining the packaging.Biological products like insulin, albumin, gamma globulin, BCG vaccine, and thrombin should be stored at 2–8°C. Medications labeled "store in a cool place" require temperatures below 22°C. Those without specific instructions are generally safe at temperatures not exceeding 30°C. "Sunlight can also affect drug stability by increasing molecular movement and accelerating chemical reactions.In high-temperature environments, medications with a three-year shelf life may expire prematurely or even deteriorate, potentially triggering toxic side effects."
Beyond Western medicines, some household medicine cabinets also stock traditional Chinese herbs. During Guangzhou's hot and humid summers, mold growth and insect infestation are common, especially in preparations like ointments and pills that often contain honey, making them particularly attractive to pests.
Signs of Medication Deterioration
Most households currently store a quantity of medications. As these are composed of chemical substances, they are susceptible to deterioration and loss of efficacy due to factors like time, temperature, light, and air exposure. Incorrect ingestion can lead to adverse reactions. Therefore, identifying whether stored medications have deteriorated or become ineffective is crucial.
Capsules: Softening, sticking together, deformation, cracking, powder leakage, oil leakage;
Tablets: Cracking, mottling, dark shadows, foreign spots, yellowing, mold growth, crumbling, sticking together, unusual odor;
Powders and granules: Abnormal odor, moisture absorption, clumping, mold growth, hardening;
Pills: Deformation, discoloration, cracks, mold growth, insect infestation;
Compounds and syrups: Rancidity, off-odors, cloudiness, gas formation;
Eye drops, nasal drops, ear drops: Cloudiness, sedimentation, discoloration, particles;
Biological products: Liquid formulations may exhibit discoloration, foul odors, insoluble clumps or foreign matter; lyophilized biological products may show signs of melting.
Ointments: May become uneven or coarse in texture, exhibit mold growth, rancidity, or separation.
Injections: May show discoloration, mold growth, sedimentation, white spots, or crystallization.
During summer's high temperatures, individuals should pay heightened attention to medication storage. Different drugs require distinct storage methods to prevent spoiled medications from harming patient health.Experts advise storing medications in a well-ventilated, dry, and light-protected area during summer. Place Chinese herbal medicines prone to mold or insect infestation in plastic bags or containers. Regularly ventilate, sun-dry, and check expiration dates. Only by keeping your home medicine cabinet cool can you prevent drug deterioration and protect your health. Below are some tips to help you easily manage medication storage.
Medicine Storage Tips
1. Refrigerator Storage
Generally, herbs should be stored in the refrigerator, especially valuable ones like cordyceps and bird's nest, to prevent both pests and moisture.Note: Frequent opening of the refrigerator door can cause condensation to dampen the herbs, leading to deterioration over time. Therefore, it is best to wrap the herbs in a plastic bag and seal it tightly before storage. Additionally, prepared herbal decoctions should also be refrigerated, with a maximum storage period of 15 days.
2. Preventing Insect Infestation and Mold Growth
Employ the "antagonistic storage method" by pairing herbs strategically. Combining pungent, aromatic herbs like Sichuan pepper, star anise, and cassia bark with certain medicinal materials can deter pests and mold. Examples include storing Sichuan pepper with gecko and seahorse, or peony root with Chinese yam and white atractylodes.
3. Moisture Prevention
>Some herbs should be sun-dried to remove moisture before sealing in airtight containers to prevent discoloration and loss of flavor. However, Astragalus root, dried tangerine peel, Angelica root, and Chinese yam should not be exposed to direct sunlight. Sun exposure can discolor Astragalus root and Chinese yam; instead, use the "baking" method for drying. Sun exposure causes dried tangerine peel and Angelica root to lose their aroma; store these in the refrigerator.
4. Even identical drugs require label verification
Factors affecting drug stability include not only the physicochemical properties of the drug itself but also its crystal form, manufacturing process, and excipients. Consequently, drugs with the same active ingredient often have different packaging and storage requirements. For example, the antiplatelet drug clopidogrel exists in crystal forms I and II. Different crystal forms exhibit varying thermodynamic stability.Type I is prone to moisture absorption and yellowing during rainy weather, necessitating strict moisture protection. Thus, even when purchasing the same medication, always check the label carefully.First, divide stockpiled medications into oral and topical categories. Then create a form detailing each medication's name, purpose, usage, dosage, precautions, and expiration date. This allows for quick reference when needed, ensuring convenience and safety. When storing medications in smaller quantities, clearly label them with the drug name, specifications, and expiration date. Never store medications without labels, relying solely on memory. Never use medications if you have doubts about their name or specifications.
6. Organize the medicine cabinet every 3 months
Regularly check medications for expiration or deterioration. Ideally, inspect the home medicine cabinet every 3 months. Promptly discard any medications found to be deteriorated, deliquesced, moldy, or expired.
7. Storage of Different Dosage Forms
For bottled medications like syrups, oral liquids, and compounds—which have high sugar content and are prone to mold or fermentation—use only what is needed. Pour out the required amount and avoid pouring it back into the bottle. Never touch the bottle opening with your mouth to prevent contamination.
When using eye drops, inhalers, sprays, or creams, avoid contaminating the dispensing opening to prevent spoiling the remaining medication.
Anesthetics and psychotropic drugs like morphine and sleeping pills should be stored under lock and key.