Guselkumab is a prescription medication used to treat adults with moderate to severe plaque psoriasis who are candidates for systemic therapy or phototherapy. It is a monoclonal antibody that blocks the activity of interleukin-23 (IL-23), a protein involved in the body’s inflammatory response. Guselkumab is injected under the skin every 8 weeks. Common side effects include upper respiratory infections, headache, injection site reactions, and joint pain.
Guselkumab, sold under the brand name Tremfya, is a medication used to treat specific autoimmune conditions [1]. Here's a breakdown of its key aspects:
Type of drug:
- Guselkumab is a biologic medication, specifically a monoclonal antibody. This means it's a lab-created molecule designed to target a specific part of the immune system [1].
Medical uses:
- Guselkumab is primarily used to treat moderate to severe cases of two conditions:
- Plaque psoriasis: This is the most common form of psoriasis, causing thick, red, scaly patches on the skin [2].
- Psoriatic arthritis: This is an inflammatory arthritis that often occurs alongside psoriasis, affecting joints and causing pain, stiffness, and swelling [2].
How it works:
- Guselkumab targets a protein called interleukin-23 (IL-23). IL-23 plays a role in the overactive immune response that underlies psoriasis and psoriatic arthritis [2, 6]. By blocking IL-23, guselkumab helps to calm the immune system and reduce inflammation [2].
Dosage and administration:
- Guselkumab is given as a subcutaneous injection (under the skin) by a healthcare provider or after proper training, you might be able to administer it yourself at home [2, 4].
- The typical dosage is 100mg, injected every eight weeks after an initial starting dose at four weeks [3].
Things to consider:
- Guselkumab is a prescription medication and should only be used under the supervision of a doctor [4].
- It can cause side effects, although common ones are usually mild and include injection site reactions, upper respiratory infections, and fatigue [2].
- Guselkumab may affect how your body responds to infections or vaccinations, so it's important to discuss this with your doctor before starting treatment [2].
It's important to note that this is just a summary, and you should consult with a healthcare professional for more detailed information about Guselkumab and whether it's right for you.