Vyvanse Storage: What Can Be Kept After Opening or Mixing
Solid medicine and prepared mixtures have different rules
Opening a bottle is different from opening a capsule to prepare it for swallowing. Keep those events separate when deciding what can be saved.
The FDA/Takeda prescribing information specifies storage at 20–25°C (68–77°F), with excursions permitted to 15–30°C (59–86°F), in a tight, light-resistant container. The Medication Guide says to keep the container tightly closed, protected from light, and somewhere secure, such as a locked cabinet, out of children’s reach.[1]
| Form or preparation | What the brand instructions say |
|---|---|
| Solid capsules | Follow the labeled storage conditions. |
| Chewable tablets | Follow the labeled storage conditions; chew completely when taking. |
| Opened capsule contents mixed with yogurt, water, or orange juice | Use the entire contents, consume the entire mixture immediately, and do not store it.[1] |
A prepared mixture is therefore not a way to organize tomorrow’s medicine. Refrigeration does not create a labeled storage allowance for it. Capsule-preparation directions should not be applied to chewable tablets.
Use the date on your actual container
An expiration date reflects stability evidence for strength, quality, and purity when the medicine is stored as directed.[2] It is conditional on storage—not a universal clock starting with manufacture.
The checked Vyvanse label does not establish a universal shelf-life interval or say that opening a bottle restarts its expiration period.[1] Use the date supplied with your medicine rather than calculating one from an assumed manufacturing date. If a pharmacy label shows a use-by date, or two dates appear to conflict, ask the dispensing pharmacy which applies.
Keep the label readable. Before transferring medicine to another container, consider whether you would lose the product name, date, or storage instructions. Ask the pharmacist about the proposed container rather than assuming any pill box provides equivalent protection.
When storage conditions are uncertain
A hot car, damp bathroom, or medicine left beside a sunny window raises a different question from ordinary shelf storage: what conditions did this particular supply experience?
Write down where it was, approximately how long it stayed there, any known temperature, and whether the container was open or damaged. Distinguish a measured temperature from a guess. If liquid entered the container or tablets or capsules changed visibly, mention that when contacting the pharmacy.
The checked label does not provide a home calculation for remaining drug strength after heat or moisture exposure.[1] Do not use appearance or the length of symptom relief as a home potency test. Give the pharmacist the actual product and exposure details instead.
Bring the actual container to an exposure review
For a storage question, have the container, dispensing date, expiration or use-by date, dosage form, and manufacturer available. For a generic product, include its NDC if listed. A photo of the label can help preserve those details, but does not replace a suitable storage container.
For expired medicine or unresolved exposure concerns, ask the dispensing pharmacy about replacement and disposal. Extensions granted to selected manufacturer or federal stockpile supplies under controlled conditions do not extend the date on a personal bottle at home.[2]
Frequently asked questions
Does Vyvanse need to be refrigerated?
No. The brand label specifies room-temperature storage.[1] If your supply has been refrigerated or frozen, ask the pharmacist about that exposure.
What happens if Vyvanse gets too hot?
Heat exposure can raise stability concerns, but you cannot calculate remaining potency at home. Tell the pharmacist the temperature if known, duration, and container conditions; the checked label does not supply a blanket hot-exposure duration.[1]
How long does Vyvanse last before it expires?
Use the expiration or use-by date on your actual container, provided storage requirements were followed. Ask the dispensing pharmacy if the date is missing or unclear; do not assume a fixed number of years.[2]
Can I put Vyvanse in a weekly pill organizer?
Ask your pharmacist whether that specific organizer provides suitable protection and closure. Keep the original labeled container and date information available.
Is expired Vyvanse dangerous to take?
FDA advises against using expired medicine.[3] Degradation can reduce strength and may produce harmful substances generally, but that does not prove expired Vyvanse is inevitably toxic. Ask the pharmacy about replacement and disposal.[2]
Can I dissolve Vyvanse in water and save it for later?
No. A prepared capsule mixture must be consumed immediately and must not be stored, including in the refrigerator.[1]
Does generic lisdexamfetamine have the same storage requirements as brand Vyvanse?
Check the instructions for your actual manufacturer, dosage form, and NDC. Do not assume every generic product has identical container or preparation instructions.
Can I travel with Vyvanse on a plane?
Keep it in a tightly closed, light-protective labeled container and maintain its specified storage conditions throughout transit. Plan for hot vehicles, cold luggage areas, direct sunlight, and secure storage at your destination.
Does humidity affect Vyvanse capsules?
Moisture exposure is a reason to check storage conditions. Keep the container closed and avoid damp locations. If moisture entered it, describe what happened to the pharmacist; the checked label gives no household humidity percentage for deciding when to discard a supply.
How can I tell if my Vyvanse has gone bad?
Check its date and storage history. Report visible changes, moisture, or container damage, but normal appearance does not prove potency. Neither appearance nor symptom-relief duration provides a reliable home test.
References
Sources checked October 13, 2026.
- FDA/Takeda. VYVANSE capsules and chewable tablets: U.S. prescribing information. Revised April 2026. Sections 2.2, 16.2, and Medication Guide.
- U.S. Food and Drug Administration. Expiration Dates—Questions and Answers.
- U.S. Food and Drug Administration. Don’t Be Tempted to Use Expired Medicines.
