Gamunex-C, immune globulin injection (human)

• Primary humoral immunodeficiency (PI): people 2 years and older with PI (a group of conditions, often inherited, in which the body does not make enough working antibodies); by vein or under the skin.
• Idiopathic thrombocytopenic purpura (ITP): adults and children with ITP (a condition with too few platelets, the blood cells that help blood clot), to raise platelet counts to prevent bleeding or to allow surgery; by vein only.
• Chronic inflammatory demyelinating polyneuropathy (CIDP): adults with CIDP (chronic inflammatory demyelinating polyneuropathy, a nerve condition that causes weakness and numbness in the arms and legs), including ongoing (maintenance) treatment to prevent relapse; by vein only.

A prescription is required. Your prescriber decides whether Gamunex-C is right for you.

IV infusion, given by a healthcare professional. When your prescriber agrees it can be given at home, we send a skilled nurse from an accredited nursing agency to give it.

Infusion under the skin, with a small pump, given by a healthcare professional, or you or a caregiver after training. A nurse can show you or a caregiver how to give it.

Storage: Keep it in the refrigerator (36°F to 46°F) in its carton to protect it from light. You may keep it at room temperature (up to 77°F) for up to 6 months; after that, use it or throw it away. Do not freeze it.

Before the first dose, your prescriber may ask for:

• a blood test to check how well your kidneys work
• for people at risk of thick blood (hyperviscosity), a blood test of how thick the blood is
• if you are switching from treatment by vein to treatment under the skin, a blood test of your IgG antibody level

Important safety information: This medicine has a boxed warning about the risk of blood clots (thrombosis). It also warns about kidney problems, including kidney failure, with immune globulin given by vein.

Read the Medication Guide and the full Gamunex-C prescribing information, and ask your prescriber or our pharmacists about side effects. Our pharmacists are on call 24 hours a day.

Health plans often require prior authorization for Gamunex-C. Our intake team checks your coverage and works with your prescriber’s office on the paperwork before your first delivery.

The manufacturer runs a support program, Gamunex Connexions, that may help eligible patients with costs and access.

Offices can call (844) 671-2600 or fax a referral to (844) 671-2601. Use the Immunoglobulin Referral Form (PDF).

The manufacturer also publishes Gamunex Connexions enrollment and prescription referral forms.