Methotrexate: adverse reactions and major toxicities

Area of Science:

• Pharmacology
• Rheumatology
• Clinical Medicine

Background:

• Methotrexate demonstrates proven long-term efficacy in treating various conditions.
• Chronic administration of methotrexate raises safety concerns.
• While common side effects are usually manageable, serious toxicities can occur.

Purpose of the Study:

• To review the safety profile of chronic methotrexate administration.
• To identify serious adverse events associated with methotrexate.
• To emphasize the importance of patient monitoring in managing methotrexate toxicity.

Main Methods:

• Review of prospective clinical trials on methotrexate efficacy.
• Analysis of reported side effects and toxicities from chronic methotrexate use.
• Evaluation of monitoring strategies for methotrexate-related adverse events.

Main Results:

• Methotrexate's long-term efficacy is well-established.
• Common side effects are frequent but rarely severe.
• Serious toxicities (hepatic, hematologic, pulmonary) are less common but significant.
• These serious toxicities often necessitate drug withdrawal.

Conclusions:

• Careful patient monitoring and laboratory testing are crucial for managing methotrexate therapy.
• Proactive monitoring can minimize or prevent serious methotrexate-related toxicities.
• Risk-benefit assessment supports continued use of methotrexate with vigilant safety practices.