How TZIELD is given
Everything to know about the TZIELD infusion process

TZIELD is a single, 14-day course of treatment
Given as an intravenous (IV) infusion
This means it's given through a needle into a vein in the arm
Once a day for 14 days
Infusions are administered by a healthcare team.* TZIELD COMPASS will check in throughout treatment to ensure a seamless experience
At least 30 minutes per infusion
Plus additional time before and after infusion for preparation and monitoring
You have options for where and how to infuse
When it comes to location, be sure to share your preferences with your doctor, but note that some insurance plans do not cover all sites of care. Your doctor can also help you determine the best method of infusion for you or your loved one.
Work with your doctor to determine:
Your site of care
At an infusion center or doctor’s office
At home
A hybrid of both options
Your method of infusion
Daily IV infusion
Midline catheter
Peripherally inserted central catheter (PICC)
Download the Site of Care Guide to learn more about your location options.
TZIELD infusion process
Before infusion
Prep with yourhealthcare team:
- Talk with your doctor about which site of care option and infusion method is right for you or your loved one
- Discuss the timing of any recent or upcoming vaccinations with your doctor, as treatment with TZIELD may impact how well they work
- Confirm the dates, times, and locations of the infusions and discuss any additional questions you have
Connect with TZIELD COMPASS, who can:
- Help with infusion scheduling and coordinating travel logistics if needed
- Provide education and practical support for the infusion process
- Help connect you with a TZIELD Mentor if you're feeling nervous and want to talk to someone who's been through treatment
Discuss lab work and pre-infusion medications
- Your doctor will order blood tests for you or your loved one to measure baseline liver function and complete blood counts
- If infusing at home, you may have to travel to a lab of your choice to complete lab work
- Your doctor may also have you or your loved one take oral medications for the first 5 days of infusion to help reduce potential side effects. These medicines include painkillers, antihistamines, and anti-nausea medication.
During infusion
Step 1
It's important to make sure you or your loved one are feeling well before beginning the infusion. A member of the healthcare team will check vitals, including temperature and blood pressure, and may also do a quick blood draw to check liver function and complete blood counts.
Step 2
The TZIELD dose is personalized based on height and weight and will gradually increase over the first 5 days to help the body adjust. The healthcare team will give you or your loved one oral medications to help reduce potential side effects. These could include certain types of painkillers, antihistamines, and anti-nausea medication.
Step 3
Your healthcare team will then prepare the medicine and start the infusion. During treatment, they will check for serious side effects, as well as other side effects, and treat you as needed. Your healthcare team may temporarily or completely stop your treatment with TZIELD, if you develop liver problems, have a serious infection, or if your blood counts stay too low.* Remember, if anything feels off or different to you or your loved one, let your healthcare team know—they're there to help.
Step 4
After the infusion is finished, the healthcare team will remove the IV or disconnect the midline or PICC line. You can expect a period of monitoring after the infusion to ensure there are no reactions, and then you'll be free to leave. You or your loved one should be able to continue the day like normal, as advised by your doctor.
*For those who experience a decrease in white blood cell counts, levels typically begin to recover after the 5th day of treatment and return to pre-treatment levels within 2 weeks of completing infusions.
After infusion
Discuss with your doctor
- Your doctor will discuss the right post-treatment monitoring and care plan for you or your loved one.
- Talk to your doctor or healthcare team about resuming activities post-treatment
- Schedule regular check-ins with your doctor to keep track of your or your loved one's health over time
Monitoring type 1 diabetes (T1D) going forward
It’s important to know and watch for early signs or symptoms of T1D (like increased thirst, frequent urination, or more tiredness than normal) and talk to your healthcare team about any changes you or your loved one experience.
Your doctor may recommend periodic lab tests or tools like glucose monitoring to help keep an eye on your or your loved one's blood sugar levels and to monitor for diabetic ketoacidosis (DKA), a medical emergency that can happen when T1D progresses in which the blood becomes acidic because the body does not have enough insulin.
Download the Infusion Guide to learn more about what to expect when treating with TZIELD
Make the most of your infusion experience
Explore helpful infusion tips below

You’re not alone
The TZIELD COMPASS Patient Support Program and the TZIELD Mentor Program are resources for care, clarity, and connection throughout the two-week infusion journey.
Important Safety Information and Approved Use
What is the most important information I should know about TZIELD? TZIELD may cause serious side effects. These include:- Cytokine release syndrome (CRS). Signs and symptoms may start during the first 5 days of TZIELD treatment and could include fever, nausea, feeling tired (fatigue), headache, muscle and joint pain, or increased liver enzymes in your blood. Tell your healthcare provider right away if you develop any signs and symptoms of CRS during treatment with TZIELD
- Decrease in white blood cells. TZIELD may cause a decrease in a type of white blood cell called lymphocytes. A decrease in white blood cells is a serious, but common side effect that can affect your body’s ability to fight infections. A decrease in white blood cell counts can happen after your first dose. Your white blood cell counts will start to go back to normal after your fifth dose of TZIELD. Some people may develop longer and more severe decreases in lymphocytes
Your healthcare provider will do blood tests to check your liver and your complete blood counts before you start treatment and during treatment with TZIELD. During and after your treatment with TZIELD, your healthcare provider will check for serious side effects, as well as other side effects, and treat you as needed. Your healthcare provider may temporarily or completely stop your treatment with TZIELD, if you develop liver problems, have a serious infection, or if your blood counts stay too low.
What should I tell my healthcare provider before receiving TZIELD? Before or after receiving TZIELD, tell your healthcare provider about all your medical conditions, including if you:- have a serious infection or an infection that does not go away or keeps coming back
- have recently received or are scheduled to receive an immunization (vaccine). TZIELD may affect how well a vaccine works. Tell your doctor that you are receiving TZIELD before receiving a vaccine
- are pregnant or plan to become pregnant. TZIELD may harm your unborn baby. Do not receive TZIELD during pregnancy and at least 30 days before a planned pregnancy
- are breastfeeding or plan to breastfeed. It is not known if TZIELD passes into your breast milk and if it can harm your baby. Talk to your healthcare provider about the best way to feed your baby if you receive TZIELD
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
What are the possible side effects of TZIELD? The most common side effects of TZIELD include:- rash
- leukopenia (decrease in white blood cell counts)
- headache
These are not all of the possible side effects of TZIELD. Talk to your healthcare provider for more information, and tell them about any side effects you notice. You may report side effects to the FDA at www.fda.gov/medwatch or 1-800-FDA-1088.
Please see Medication Guide and Prescribing Information.
What is TZIELD?
TZIELD is a prescription medicine used to delay the onset of Stage 3 type 1 diabetes, which is when your body can’t make enough insulin on its own and may require insulin injections. TZIELD is for adults and children 8 years of age and older who have Stage 2 type 1 diabetes. This means that they have tested positive for 2 or more type 1 diabetes-related autoantibodies, have abnormal blood sugar levels, and do not have type 2 diabetes.
It is not known if TZIELD is safe and effective in children under 8 years of age.
Important Safety Information and Approved Use
- Cytokine release syndrome (CRS). Signs and symptoms may start during the first 5 days of TZIELD treatment and could include fever, nausea, feeling tired (fatigue), headache, muscle and joint pain, or increased liver enzymes in your blood. Tell your healthcare provider right away if you develop any signs and symptoms of CRS during treatment with TZIELD
- Decrease in white blood cells. TZIELD may cause a decrease in a type of white blood cell called lymphocytes. A decrease in white blood cells is a serious, but common side effect that can affect your body’s ability to fight infections. A decrease in white blood cell counts can happen after your first dose. Your white blood cell counts will start to go back to normal after your fifth dose of TZIELD. Some people may develop longer and more severe decreases in lymphocytes
Your healthcare provider will do blood tests to check your liver and your complete blood counts before you start treatment and during treatment with TZIELD. During and after your treatment with TZIELD, your healthcare provider will check for serious side effects, as well as other side effects, and treat you as needed. Your healthcare provider may temporarily or completely stop your treatment with TZIELD, if you develop liver problems, have a serious infection, or if your blood counts stay too low.
What should I tell my healthcare provider before receiving TZIELD? Before or after receiving TZIELD, tell your healthcare provider about all your medical conditions, including if you:- have a serious infection or an infection that does not go away or keeps coming back
- have recently received or are scheduled to receive an immunization (vaccine). TZIELD may affect how well a vaccine works. Tell your doctor that you are receiving TZIELD before receiving a vaccine
- are pregnant or plan to become pregnant. TZIELD may harm your unborn baby. Do not receive TZIELD during pregnancy and at least 30 days before a planned pregnancy
- are breastfeeding or plan to breastfeed. It is not known if TZIELD passes into your breast milk and if it can harm your baby. Talk to your healthcare provider about the best way to feed your baby if you receive TZIELD
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
What are the possible side effects of TZIELD? The most common side effects of TZIELD include:- rash
- leukopenia (decrease in white blood cell counts)
- headache
These are not all of the possible side effects of TZIELD. Talk to your healthcare provider for more information, and tell them about any side effects you notice. You may report side effects to the FDA at www.fda.gov/medwatch or 1-800-FDA-1088.
Please see Medication Guide and Prescribing Information.
What is TZIELD?
TZIELD is a prescription medicine used to delay the onset of Stage 3 type 1 diabetes, which is when your body can’t make enough insulin on its own and may require insulin injections. TZIELD is for adults and children 8 years of age and older who have Stage 2 type 1 diabetes. This means that they have tested positive for 2 or more type 1 diabetes-related autoantibodies, have abnormal blood sugar levels, and do not have type 2 diabetes.
It is not known if TZIELD is safe and effective in children under 8 years of age.