How do you store testosterone cypionate?
Here is how to store testosterone cypionate: at room temperature, out of the light. The DEPO-Testosterone label says to store it at 20 to 25°C (68 to 77°F) and protect it from light. In practice, that means in its box, in a cool, dry place such as a drawer.
Storage is one of the everyday parts of injecting at home. Our guide to injecting testosterone covers the rest.
This page covers the temperature for each product, what to do about crystals, and how long an opened vial lasts. It also covers expiry dates, keeping it safe from others, and getting rid of what you don’t use.
Always check the storage line on your own label. Most cypionate vials share the same wording, but a few products differ. The label in your hand is the one that counts.
Does testosterone need to be refrigerated?
No. We checked 54 cypionate injection labels on DailyMed (the official US drug label database) on October 21, 2026. None of them mentions keeping it in the fridge or freezer.
Nearly all give room temperature, 68 to 77°F; two differ slightly, such as Azmiro’s 59 to 77°F.
The one injectable that speaks to this directly says to keep it out of the fridge. Xyosted’s label says not to refrigerate or freeze it, and to use it at room temperature.
AVEED, the undecanoate shot given at a clinic, is also stored at room temperature.
Cold is actually a problem for testosterone in oil. The cypionate label says crystals can form when it’s stored colder than recommended. An FDA review notes the maker’s statement that crystals tend to form below the label’s range.
So the fridge works against you.
What storage temperature do other testosterone products need?
| Product | Label storage |
|---|---|
| DEPO-Testosterone and most generic cypionate | 68 to 77°F, protect from light |
| Azmiro (cypionate vial and prefilled syringe) | 59 to 77°F; short excursions 36 to 86°F; keep in carton |
| Generic enanthate | 68 to 77°F |
| Xyosted (enanthate auto-injector) | 68 to 77°F; short excursions 59 to 86°F; don’t refrigerate or freeze; keep in carton |
| AVEED (undecanoate, clinic-given) | 77°F; excursions 59 to 86°F |
| AndroGel 1% gel | Room temperature, 68 to 77°F |
Most labels use the phrase “USP Controlled Room Temperature.” It’s the pharmacy standard behind these numbers: 68 to 77°F for normal storage, with short excursions allowed outside it.
An excursion means a brief spell outside the range. It’s not a new place to keep it.
Where is the best place to keep testosterone at home?
The FDA recommends a cool, dry place. Good examples are a dresser drawer, a storage box, a closet shelf, or a kitchen cabinet away from hot appliances and the sink. It warns that a damp bathroom cabinet can make medicines weaker before their expiry date.
MedlinePlus, from the National Library of Medicine, names two places to avoid. Heat and damp from showers, baths and sinks can harm medicines. And a car’s glove box can get too hot, too cold or too wet.
No testosterone label says how long the oil can stand heat, so keep it inside its label range.
Light matters too. DEPO-Testosterone says to protect it from light, and Azmiro and Xyosted say to keep it in its box until use.
The box is the easiest way to do that. It also keeps the pharmacy label with the vial, which matters when you travel with testosterone.
Why do crystals form in testosterone, and what should you do?
An FDA review of a new cypionate product records what its maker said. The drug tends to come out of the oil as crystals. Crystals have formed in Depo-Testosterone and generic vials, most often below the label’s 68 to 77°F.
The label’s advice is simple: warming and shaking the vial should dissolve any crystals again. The enanthate label says to warm and roll the vial between the palms of your hands.
Neither label gives a temperature or a time. So don’t use hot water, a microwave or a heater.
If the crystals stay, don’t use the vial. In 2025 the FDA classified a recall of one maker’s 200 mg/mL single-dose cypionate vials. People had complained that the crystals didn’t dissolve after warming and shaking.
Return a vial like that to your pharmacy.
The labels also ask you to look for particles and color changes before every use. Xyosted says not to use it if the liquid is cloudy or has particles you can see.
How long is an opened vial of testosterone good for?
It depends on the kind of vial. A 1 mL vial is usually single-dose: you use it once and throw away what’s left. The Azmiro label says to discard anything left in a single-dose vial.
A 10 mL vial is multiple-dose. It has a preservative (an added ingredient that slows germ growth) so it can be used more than once.
For multiple-dose vials, the cypionate labels don’t say how long they last once opened. Clinics use a default instead.
FDA draft guidance says an opened multiple-dose vial lasts 28 days unless the maker says otherwise. The CDC says clinics should date opened multiple-dose vials and throw them out within 28 days.
The 28 days is a rule for clinics, not a number on your label. If your vial lasts longer than that, ask your pharmacist what they advise. Whatever they say, write the date you first open the vial on its label.
Never leave a needle in the rubber top between uses. The CDC warns this gives germs a direct way into the vial. It also notes that the preservative doesn’t fully protect against germs.
To work out how much oil a dose is for your vial’s strength, use the volume calculator. The steps for drawing up cleanly are in how to draw testosterone into a syringe.
Can you use testosterone past its expiration date?
The FDA’s answer is no: if your medicine has expired, don’t use it. An expiry date marks how long a product is known to stay stable when stored as the label says.
After that, a medicine may be weaker than it should be. It may also break down into compounds that cause side effects.
You may read that many medicines last well past their dates. That comes from testing of government stockpiles. 88% of tested batches had their dates extended by at least a year.
But the extra time varied a lot, and it could only be confirmed by testing each batch. The FDA explains why this doesn’t apply at home: people store their medicines in all sorts of conditions.
The printed date also assumes proper storage. A vial kept in a hot car or a steamy bathroom may not last until its date. That’s one more reason to keep it in a drawer.
How do you keep testosterone safe from others?
The label says testosterone is a Schedule III controlled substance under US federal law. The Xyosted Medication Guide makes the practical point plainly. People who misuse prescription drugs may want it, so keep it in a safe place and never give it to anyone else.
Keep vials, syringes and needles out of reach of children. The Xyosted and AndroGel guides both say to keep all medicines out of children’s reach.
The FDA adds that care is needed to keep it away from children and anyone it isn’t prescribed for.
How should you store testosterone gel?
Gels use the same room-temperature range. AndroGel 1% is stored at 77°F, with short excursions from 59 to 86°F allowed. Its Medication Guide puts it simply: room temperature, 68 to 77°F.
Two gel rules have no match for vials. First, gels are alcohol-based and can catch fire until dry. The label says to avoid fire, flame or smoking until the gel has dried.
That’s about your skin after you apply it, not the cupboard you keep it in. Second, the AndroGel label says used pumps and packets go in the household trash in a way that keeps children and pets away from them.
Children are the bigger risk with gels. The AndroGel guide says to keep it and all medicines out of their reach. Gel labels also warn that it can pass from your skin to others.
Store the pump or packets where children can’t open them.
How do heat and travel affect testosterone storage?
Heat is the risk most people underestimate. The CDC tells doctors to warn patients not to leave medicines in a car or other very hot places. Heat can damage medicines and the devices used to give them.
The only heat limit printed on testosterone labels is 86°F. That’s the top of the short-excursion range several products allow.
So on hot days, and when you travel, keep the vial with you. Don’t leave it in a parked car or a sunny window. In a hotel, a drawer away from the bathroom works as well as one at home.
If a vial has been somewhere very hot or very cold, look at it closely before use. Ask your pharmacist if anything looks different.
How do you get rid of unused or expired testosterone?
For most unused medicine, the FDA’s first choice is a drug take-back site or a prepaid mail-back envelope. Testosterone is a Schedule III controlled substance, so ask the site or your pharmacy whether they take it.
It isn’t on the FDA’s flush list. So don’t pour it down the drain or toilet.
Take-back events have limits. The DEA’s National Prescription Drug Take Back Day is on October 24, 2026. Liquid medicines are accepted only if sealed in their original containers, and the DEA does not accept syringes, sharps or illegal drugs.
Keep needles separate. Used needles go into a sharps container. Our guide to sharps disposal explains what to do with it when it’s full.
If there’s no take-back option near you, the FDA describes a household-trash method. Mix the medicine with something unpleasant such as dirt, cat litter or used coffee grounds, seal it in a bag, and scratch your personal details off the label.
The FDA page gives no steps for vials, so ask your pharmacist how to get rid of an oil vial. Whether a site takes a part-used vial varies, so check before you go.
What does a good storage routine look like?
Put together, the labels and FDA advice come down to a short routine. It fits alongside the rest of your home injection routine:
- Keep it in the box, with the pharmacy label, in a dry drawer or cupboard away from the sink, shower and stove.
- Look before every use: clear oil, no particles, no crystals that won’t dissolve, in date.
- Date a new multiple-dose vial the day you first open it.
- Keep it out of reach of children and anyone it isn’t prescribed for.
- Take what you don’t use to a take-back site, and used needles to the sharps container.
What should you ask your pharmacist about storing testosterone?
- Does my product have any storage instructions that differ from the usual 68 to 77°F?
- When should I throw away a multiple-dose vial once it’s opened?
- What should I do if crystals don’t dissolve or the oil looks cloudy?
- Where can I take unused or expired vials near me?
- How should I store it on a long trip or in hot weather?