Is There an Auto-Injector for Testosterone? | XYOSTED Facts

— a once-weekly dose into belly fat from a single-use device.

Testosterone replacement therapy has long meant vials, drawing needles, and a syringe you load yourself. Whether an auto-injector for testosterone fits your treatment depends on your prescriber and how you feel about self-injection.

Here is what the device is, how the shot actually goes, and where self-injectors most often slip up.

Testosterone Auto-Injector Options: Which Ones Exist In The U.S.?

Exactly one testosterone product in the U.S. ships as a single-use auto-injector with FDA labeling: XYOSTED, a testosterone enanthate solution injected subcutaneously into abdominal fat once a week. Vials, gels, pellets, nasal gels, and capsules all exist, but none of them is an auto-injector.

XYOSTED comes in three strengths — 50 mg, 75 mg, and 100 mg per 0.5 mL — and each device is sterile, preservative-free, and nonpyrogenic, with testosterone enanthate carried in sesame oil. The labeled starting dose is 75 mg once weekly, adjusted afterward by measured testosterone levels and your clinical response.

Conventional vials and prefilled syringes do not clip into an auto-injector. Concentration, formulation, excipients, and dosing are not interchangeable, so switching delivery systems needs your prescriber’s sign-off and, in most cases, confirmation from the manufacturer.

The label is narrow about who this is for: adult males with testosterone deficiency tied to a medical condition. XYOSTED is not approved for women or children, and it is not a performance product. Cost varies by pharmacy, insurance, deductible, and manufacturer savings eligibility, so get a current quote before your first fill. If you are weighing devices before that call, our tested auto-injector for testosterone roundup lays out what to compare.

Using the XYOSTED Device: Steps That Match The Label

XYOSTED is injected once weekly, subcutaneously, into the abdomen only, at the strength your prescriber picked. The needle stays hidden before and during the injection, which is exactly why people who dislike needles ask about it.

Training comes before the first solo dose — the instructions for use require a healthcare professional to walk you through the device. Subcutaneous delivery into belly fat is shallower than an intramuscular shot into the glute or thigh, so a dose change means a different-strength device, not a bigger volume drawn from a vial. FDA labeling for XYOSTED rules out intramuscular and intravascular injection.

1. Wash your hands, then check the viewing window. The solution should be clear to light yellow with no visible particles; cloudy liquid, specks, or a broken seal means the device gets thrown out.
2. Pick the left or right side of your abdomen, at least 2 inches from the navel, skipping skin that is tender, bruised, red, scaly, hard, scarred, tattooed, or stretch-marked.
3. Wipe the spot with an alcohol swab and let it air-dry completely. Do not fan it, blow on it, or touch it after wiping.
4. Twist off the cap to break the red safety seal. Once the cap is off, the device is committed — use it now or discard it.
5. Pinch a raised fold of skin, set the needle end flat against it at 90 degrees, and press firmly downward. After the click, keep holding and count slowly to 10.
6. Look at the window again — orange means the full dose went in. Drop the device and cap into an FDA-cleared sharps container.

Alternating sides week to week gives the tissue a rest. A missed week is not fixed by doubling the next dose; call your prescriber instead.

Where Self-Injection Usually Goes Wrong

Most problems with this device are timing and site errors rather than mechanical failures. The label’s precautions read like a list of habits to break.

• Injecting more than once a week. One device, one time weekly — no topping up because a dose felt small.
• Straying off the abdomen. Thigh, buttock, and arm are not approved sites for this device.
• Holding the pen at an angle, or lifting it right after the click instead of counting to 10.
• Skipping the dry time on the alcohol swab, or shooting into damaged skin.
• Using cloudy solution, a device with visible particles, or a broken seal.
• Substituting a vial of testosterone or another formulation without prescriber direction.
• Reusing or refilling the pen. It is single-use by design.

Testosterone is a controlled prescription medicine, and the label carries warnings about abuse and misuse, dependence, polycythemia, cardiovascular and prostate risks, and transfer exposure to household members. Self-injection changes who holds the pen, not who decides the dose.