Can Xolair (Omalizumab) impact magnesium absorption?

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Last updated: June 16, 2025View editorial policy

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From the Guidelines

Xolair (Omalizumab) does not directly impact magnesium absorption. The provided evidence discusses the adverse effects of medications, such as proton pump inhibitors (PPIs), on micronutrient status, including magnesium absorption 1. However, there is no mention of Xolair or its effects on magnesium levels. Omalizumab is a monoclonal antibody that targets immunoglobulin E (IgE) and is used to treat allergic asthma and chronic idiopathic urticaria. Its mechanism of action does not involve the gastrointestinal tract's absorption mechanisms or the kidney's regulation of magnesium levels. Some key points to consider:

  • The evidence provided focuses on the effects of PPIs on micronutrient status, including magnesium absorption 1.
  • Xolair's common side effects include injection site reactions, viral infections, upper respiratory infections, sinusitis, headache, and pharyngitis, but alterations in magnesium levels are not reported 1.
  • If symptoms suggesting magnesium deficiency occur while taking Xolair, such as muscle cramps, fatigue, or numbness, these are likely unrelated to the medication, but should be discussed with a healthcare provider.
  • Regular blood work while on any chronic medication therapy is a good practice to monitor for unexpected effects. Given the lack of evidence linking Xolair to magnesium absorption, it is unlikely that Xolair would have a significant impact on magnesium levels.

From the Research

Xolair and Magnesium Absorption

  • There is no direct evidence to suggest that Xolair (Omalizumab) impacts magnesium absorption 2, 3, 4, 5, 6.
  • The provided studies focus on various aspects of magnesium, including its biochemistry, nutrition, detection, and social impact of diseases linked to its deficiency 2, interactions with cardiovascular drugs 3, diagnosis of magnesium deficiency 4, assessment of intestinal magnesium absorption 5, and associations between drug use and plasma magnesium levels 6.
  • None of these studies mention Xolair or its potential effects on magnesium absorption, indicating a lack of research on this specific topic.
  • Further studies would be necessary to determine if Xolair has any impact on magnesium absorption.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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