Isavuconazonium Sulfate Capsules (Cresemba) is a prescription antifungal medication used to treat invasive aspergillosis and mucormycosis. It has attracted attention due to its relatively good efficacy. As a special pharmaceutical product, extra caution is required regarding its purchase channels, medication administration, and authenticity verification.
How to Purchase Isavuconazonium Sulfate Capsules (Cresemba)
Overseas Purchase
Patients may choose to consult and purchase the medication at hospital pharmacies or regular drugstores in countries or regions where Isavuconazonium Sulfate Capsules have been launched.
Since drug prices may be affected by factors such as regional differences and exchange rate fluctuations, patients need to make budgets and plans in advance before purchasing.
Purchase through Medical Service Institutions
Patients can consult domestic overseas medical service institutions that cooperate with international pharmacies or pharmaceutical companies.
These institutions can usually provide legal import channels and offer professional consultation and guidance.
Precautions for Purchasing Isavuconazonium Sulfate Capsules (Cresemba)
Priority to Prescription and Doctor’s Advice
Isavuconazonium Sulfate Capsules are prescription drugs. They must be used strictly in accordance with the doctor’s guidance, and the dosage or treatment course shall not be adjusted without authorization.
Verification of Channel Legitimacy
Verify the pharmacy’s qualification: Check the Drug Trading License and GSP certification (Good Supply Practice for Pharmaceuticals).
Be alert to low-price traps: "Low-priced drugs" from irregular channels may carry the risk of being counterfeit.
Verification of Drug Information
Check the approval number (such as the Import Drug Registration Certificate number), production batch number, and expiration date marked on the packaging.
Confirm that the drug name and ingredients (e.g., "isavuconazonium sulfate") are consistent with the doctor’s prescription.
Medication Tips for Special Populations
Pregnant women, lactating women, and patients with hepatic or renal insufficiency must use the medication after being evaluated by a doctor.
How to Identify Authentic Isavuconazonium Sulfate Capsules (Cresemba)
Packaging and Appearance Inspection
The capsules are opaque. The 74.5mg specification comes in a reddish-brown bottle with the black Astellas logo printed on it, while the 186mg specification has a reddish-brown bottle with a white cap.
The outer packaging is intact, the aluminum foil blister is sealed, and a desiccant (non-edible) is included.
Common problems with counterfeit products: Blurred printing, abnormal capsule color, and no anti-counterfeiting code on the packaging.
Official Verification Channels
Query the authenticity through the drug traceability code on the official website or official APP of the National Medical Products Administration.
Contact the customer service of the manufacturer (Astellas Pharma) to verify the batch number information.
Identification of Contents
Authentic capsules should be undamaged and free of peculiar smells, with uniform powder as the content.
If caking, discoloration, or peculiar smell is found, stop using the product immediately.

