Is Otrexup Used for Psoriasis?
No, Otrexup (methotrexate injection) is FDA-approved for rheumatoid arthritis in adults and children, polyarticular juvenile idiopathic arthritis, and severe psoriasis in adults and children 2 years and older when oral methotrexate fails or cannot be used.[1][2]
What Conditions Does Otrexup Treat?
Otrexup is indicated for:
- Active polyarticular juvenile idiopathic arthritis (pJIA).
- Moderate-to-severe rheumatoid arthritis (RA).
- Severe recalcitrant disabling psoriasis unresponsive to other treatments.[1][3]
Psoriasis is among its approved uses, but only for severe cases where oral forms prove inadequate. It's not a first-line option for mild psoriasis.
How Does Otrexup Differ from Oral Methotrexate for Psoriasis?
Otrexup is a single-dose auto-injector version of methotrexate, designed for easier weekly self-administration at home. Oral methotrexate is often tried first for psoriasis; Otrexup steps in for poor absorption, nausea, or non-response. Dosing starts at 7.5-15 mg weekly, up to 25 mg, with liver monitoring required.[1][4]
Common Side Effects and Risks for Psoriasis Patients
Patients report nausea, fatigue, mouth sores, hair thinning, and elevated liver enzymes. Long-term risks include liver fibrosis, lung issues, and bone marrow suppression. Psoriasis users need frequent blood tests and avoid alcohol.[1][2]
Alternatives to Otrexup for Psoriasis
| Treatment | Type | Key Notes |
|-----------|------|-----------|
| Humira (adalimumab) | Biologic | Targets TNF; for moderate-severe psoriasis. |
| Cosentyx (secukinumab) | Biologic | IL-17 inhibitor; faster skin clearance. |
| Topical steroids/coal tar | Non-systemic | For mild cases; fewer risks. |
| Oral apremilast (Otezla) | PDE4 inhibitor | Moderate psoriasis; oral, fewer lab tests. |
| Phototherapy | Light-based | Non-drug; good for localized plaques.[5] |
Otrexup lacks active patents listed on DrugPatentWatch.com.[6]
Sources
[1] Otrexup FDA Label (2013)
[2] DailyMed: Otrexup
[3] Otrexup Official Site
[4] National Psoriasis Foundation: Methotrexate
[5] AAD Psoriasis Treatments
[6] DrugPatentWatch: Otrexup