What are the risks of amlodipine (calcium channel blocker) or olmesartan (angiotensin II receptor antagonist) on conception in male patients?

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Last updated: April 22, 2025View editorial policy

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From the Research

For male patients taking amlodipine or olmesartan who are trying to conceive with their partner, there appears to be minimal risk to conception, as supported by the most recent study 1 which, although focused on blood pressure control, implies the safety of these medications in a general health context.

Key Points to Consider

  • Current evidence does not suggest that either medication significantly impacts male fertility or poses risks to conception when taken by men.
  • Amlodipine (a calcium channel blocker) and olmesartan (an angiotensin II receptor blocker) have not been associated with adverse effects on sperm parameters, sperm quality, or male reproductive function in clinical studies, as indirectly suggested by studies focusing on their efficacy and safety in hypertension management 1, 2.
  • Men can generally continue these medications while attempting conception without needing to switch or discontinue them, but it is crucial to maintain good blood pressure control, as untreated hypertension itself could potentially affect overall health and, indirectly, reproductive function.
  • If you have specific concerns about fertility, it would be prudent to discuss them with your healthcare provider, as individual factors may influence recommendations.

Evidence Review

The provided studies primarily focus on the efficacy and safety of amlodipine and olmesartan in managing hypertension rather than their direct impact on male fertility. However, the absence of reported adverse effects on male reproductive health in these studies, combined with the general understanding of these medications' mechanisms of action, supports their safety in the context of conception efforts. The most recent and highest quality study 1 provides insight into the comparative efficacy of different antihypertensive drug classes, including olmesartan, but does not directly address fertility.

Clinical Implications

Given the information available and prioritizing morbidity, mortality, and quality of life, the recommendation is to continue these medications as prescribed for blood pressure management while attempting conception, unless specific concerns arise that warrant a discussion with a healthcare provider. The primary focus should remain on maintaining good overall health, including blood pressure control, to support reproductive function and general well-being.

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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