Common side effects of Methotrexate include Nausea, Mouth ulcers, Fatigue. Serious side effects include Liver cirrhosis and Bone marrow suppression. Methotrexate is classified as Immunosuppressant. Always consult a doctor if side effects persist.

Side Effects GuideAI-VerifiedImmunosuppressant

Methotrexate Side Effects

Complete guide to Methotrexate side effects — what's common, what's serious, which body systems are affected, and when to see a doctor.

Body impact map

Common
Serious
5
Common effects
5
Serious effects
5+
Body systems

Common Side Effects

Usually mild · often resolve on their own

These side effects may occur in some patients taking Methotrexate. Most are mild and improve as your body adjusts. Tell your doctor if any persist or worsen.

Nausea
Stomach / GI
Mouth ulcers
Stomach / GI
Fatigue
Head / Brain
Loss of appetite
Stomach / GI
Hair thinning
Whole body

Serious Side Effects

Rare but urgent · seek immediate medical help

Stop taking Methotrexate and seek immediate medical help if any of the following occur. Call 112 for emergencies.

Emergency · 112
Liver cirrhosis
Liver
Bone marrow suppression
Muscle / Joints
Lung damage
Heart / Lungs
Severe infections
Whole body
Birth defects
Whole body

Not a complete list. Report any unusual symptoms to your doctor immediately.

How to Minimize Side Effects

Simple steps that help

  • Take Methotrexate exactly as prescribed by your doctor — never change the dose yourself.
  • Follow dosage timing instructions carefully (with food / empty stomach / at bedtime as directed).
  • Do not stop Methotrexate suddenly without consulting your doctor — sudden discontinuation can be risky.
  • Report any new or unusual symptoms to your doctor promptly — early detection prevents complications.
  • Check drug interactions with GoDavaii AI before starting any new medicine, supplement, or even herbal remedy.
  • Avoid alcohol while on Methotrexate unless your doctor has confirmed it is safe.
AI-Verified · Cross-checked against 40,000+ interaction database

Not medical advice

Individual responses to Methotrexate vary — age, weight, existing conditions, and other medicines all matter. Always consult your doctor for personalized advice. For emergencies, call 112.

Frequently Asked Questions

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