HemoChat

Evidence-Based AI Medical Search

← Back to guidelines
Anesthesiology19 papers

Drug-induced male infertility

Last edited: 1 h ago

Overview

Drug-induced male infertility refers to impaired fertility in men due to the adverse effects of various medications on reproductive function. This condition can significantly impact male reproductive health, affecting sperm production, quality, and overall hormonal balance. Common culprits include analgesics, opioids, nonsteroidal anti-inflammatory drugs (NSAIDs), and anticonvulsants. Clinicians encounter this issue frequently, particularly among patients with chronic pain conditions, those undergoing long-term medication therapy, and individuals exposed to these drugs during critical developmental periods. Understanding the mechanisms and clinical implications is crucial for timely intervention and management, ensuring optimal reproductive outcomes 1234567891011121314.

Pathophysiology

The pathophysiology of drug-induced male infertility often involves multifaceted disruptions at molecular, cellular, and organ levels. NSAIDs and analgesics, such as ibuprofen, ketoprofen, and tramadol, primarily exert their effects by inhibiting cyclooxygenase (COX) enzymes, which are crucial for prostaglandin synthesis. Prostaglandins play a vital role in maintaining normal testicular function, including sperm maturation and transport. Inhibition of COX enzymes can lead to reduced prostaglandin levels, resulting in impaired spermatogenesis, decreased sperm motility, and alterations in testicular histology 1416.

Opioids like fentanyl and tramadol can induce systemic inflammation and oxidative stress, affecting Leydig cell function and testosterone production. Chronic exposure to these drugs can disrupt the hypothalamic-pituitary-gonadal axis, leading to hormonal imbalances that further compromise sperm quality and quantity 21114. Additionally, certain drugs such as pregabalin have been shown to directly impact spermatogenesis and sperm parameters, potentially through mechanisms involving oxidative stress and cellular toxicity 513. These disruptions collectively contribute to the clinical manifestations of infertility observed in affected individuals.

Epidemiology

The incidence and prevalence of drug-induced male infertility are not extensively documented in large population studies, making precise figures challenging to ascertain. However, given the widespread use of medications like NSAIDs, opioids, and anticonvulsants, the risk is significant across various demographics. Age appears to be a relevant factor, with younger individuals, particularly those exposed pre-pubertally, showing more pronounced effects on future reproductive health 7810. Geographic variations may exist due to differing prescription patterns and environmental exposures, though specific trends over time are less clear. Understanding these distributions is crucial for targeted screening and intervention strategies 136.

Clinical Presentation

Clinical presentation of drug-induced male infertility often includes subtle symptoms that can be easily overlooked. Common findings include reduced libido, erectile dysfunction, and complaints of infertility without overt signs of systemic illness. Physical examination may reveal normal secondary sexual characteristics but can sometimes show testicular atrophy or abnormalities in the epididymis. Laboratory investigations typically reveal the core issues: decreased sperm count, poor sperm motility, and abnormal morphology 3712. Red-flag features include sudden onset of symptoms in young men or those with recent changes in medication regimens, warranting immediate diagnostic evaluation 12.

Diagnosis

The diagnostic approach for drug-induced male infertility involves a comprehensive evaluation of medical history, medication review, and targeted laboratory assessments. Key steps include:

  • Detailed Medical History: Focus on medication use, duration, and dosage, especially analgesics, opioids, and NSAIDs.
  • Medication Review: Identify potential culprits based on known adverse effects on male fertility.
  • Semen Analysis: Essential for assessing sperm count, motility, morphology, and overall quality. Abnormalities such as oligospermia (<15 million sperm/mL), asthenospermia (poor motility), and teratozoospermia (abnormal morphology) are indicative 3712.
  • Hormonal Assessment: Measure serum testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), and prolactin levels to evaluate hormonal imbalances 1211.
  • Testicular Biopsy: Reserved for cases where non-invasive tests are inconclusive, to assess structural abnormalities in the testes 112.

    • Specific Criteria and Tests:

  • Semen Analysis: Sperm concentration <15 million/mL, motility <50%, morphology <4% normal forms 37.
  • Hormonal Cutoffs:
    • - Testosterone <300 ng/dL - FSH >10 mIU/mL - LH >5 mIU/mL
  • Differential Diagnosis:
    • - Varicocele: Physical examination reveals palpable dilated veins in the scrotum. - Genetic Factors: Karyotype analysis for chromosomal abnormalities. - Chronic Illnesses: Evaluate for underlying conditions like hypogonadism or systemic diseases 1211.

    Differential Diagnosis

  • Varicocele: Distinguished by palpable dilated veins in the scrotum, often associated with a dull ache in the scrotum or lower abdomen 12.
  • Genetic Disorders: Identified through karyotype analysis revealing chromosomal abnormalities like Klinefelter syndrome 12.
  • Chronic Diseases: Conditions like hypogonadism or systemic illnesses affecting endocrine function can mimic drug-induced effects but are typically supported by additional clinical and laboratory findings 111.

    • Management

    First-Line Management

  • Medication Review and Adjustment: Discontinue or switch to less harmful alternatives. For example, switching from NSAIDs to acetaminophen where feasible 13.
  • Lifestyle Modifications: Encourage healthy lifestyle changes including balanced diet, regular exercise, and avoidance of substances that exacerbate oxidative stress 12.

    • Specific Interventions:

  • Drug Substitution: Replace NSAIDs with acetaminophen or other safer analgesics.
  • Monitoring: Regular follow-up semen analyses every 3-6 months to assess recovery 37.

    • Second-Line Management

  • Hormonal Therapy: For hormonal imbalances, consider testosterone replacement therapy if indicated by low levels and clinical symptoms 111.
  • Antioxidants: Supplementation with antioxidants like vitamin E and selenium to mitigate oxidative stress 14.

    • Specific Interventions:

  • Testosterone Replacement: Initiate at 100-200 mg intramuscularly every 2-4 weeks, titrating based on clinical response and levels 111.
  • Antioxidant Supplementation: Vitamin E 400 IU daily, Selenium 200 mcg daily 416.

    • Specialist Referral and Refractory Cases

  • Urology Consultation: For persistent issues, referral to a urologist for advanced diagnostic procedures like testicular biopsy.
  • Reproductive Endocrinology: Specialized care for complex hormonal imbalances and fertility treatments 112.

    • Specific Interventions:

  • Testicular Biopsy: Considered for persistent abnormalities not explained by routine assessments.
  • Assisted Reproductive Technologies (ART): Consultation for options like in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) if natural conception fails 112.

    • Complications

  • Chronic Infertility: Prolonged exposure may lead to irreversible damage to spermatogenesis.
  • Hormonal Imbalances: Persistent issues with testosterone and other reproductive hormones can affect overall health and well-being.
  • Psychological Impact: Stress, anxiety, and depression related to infertility can significantly affect quality of life 1211.

    • Management Triggers:

  • Persistent Low Sperm Counts: Indicate need for further diagnostic workup.
  • Hormonal Dysregulation: Require close monitoring and potential hormonal therapy adjustments 111.

    • Prognosis & Follow-Up

    The prognosis for drug-induced male infertility varies based on the duration and extent of drug exposure. Early identification and cessation of offending agents often lead to partial or complete recovery of sperm parameters within months to years. Prognostic indicators include initial severity of semen abnormalities and the presence of concurrent hormonal imbalances. Regular follow-up semen analyses every 3-6 months are recommended to monitor recovery. Hormonal levels should also be reassessed periodically to ensure stability 137.

    Special Populations

    Pediatrics

    Pre-pubertal exposure to certain drugs like ibuprofen can have lasting impacts on future reproductive health, affecting sperm parameters in adulthood 7.

    Elderly

    Elderly patients may have compounded effects due to age-related declines in testicular function, making them more susceptible to drug-induced impairments 12.

    Comorbidities

    Individuals with pre-existing conditions such as hypogonadism or chronic illnesses may experience exacerbated effects, necessitating more vigilant monitoring and management 111.

    Key Recommendations

  • Thorough Medication Review: Regularly assess and adjust medications to minimize reproductive risks (Evidence: Strong 13).
  • Baseline Semen Analysis: Conduct for men on long-term medication regimens, especially NSAIDs and opioids (Evidence: Moderate 37).
  • Hormonal Monitoring: Evaluate testosterone and FSH levels in patients with suspected drug-induced infertility (Evidence: Moderate 111).
  • Consider Alternative Analgesics: Prefer acetaminophen over NSAIDs when possible to reduce reproductive risks (Evidence: Moderate 13).
  • Lifestyle Modifications: Encourage healthy lifestyle changes to mitigate oxidative stress and support reproductive health (Evidence: Weak 12).
  • Antioxidant Supplementation: Consider vitamin E and selenium for patients with oxidative stress markers (Evidence: Weak 416).
  • Early Specialist Referral: For persistent infertility, refer to urology or reproductive endocrinology for advanced management (Evidence: Expert opinion 112).
  • Regular Follow-Up: Schedule periodic semen analyses and hormonal assessments to monitor recovery (Evidence: Moderate 37).
  • Avoid Pre-Pubertal Exposure: Minimize use of potentially harmful drugs in prepubertal males to prevent long-term effects (Evidence: Expert opinion 7).
  • Evaluate Environmental Exposures: Consider environmental contaminants like NSAIDs and EE2 in drinking water, especially in endemic areas (Evidence: Moderate 6).

    • References

    1 Capelo MF, Monteiro PB, Anastácio BM. Effects of major analgesics on male fertility: A systematic literature review. JBRA assisted reproduction 2024. link 2 Kosal V, Kurt N, Okulmus C, Keles OF. Effect of different doses of transdermal fentanyl on the reproductive system in male rats. Pakistan journal of pharmaceutical sciences 2025. link 3 Huang WT, Wang JH, Ding DC. Ibuprofen use and male infertility: Insights from a nationwide retrospective cohort study. European journal of obstetrics, gynecology, and reproductive biology 2025. link 4 Rodrigues RTGA, Marques VB, Silva MSD, Gomes LTDC, Sena MO, Figueiredo BDS et al.. Negative effects of ketoprofen and meloxicam on distal cauda epidydimal duct contractions, testosterone levels, and sperm count in rats. Reproductive biology 2024. link 5 Mestre VF, Martins CCN, Brito LV, Zeffa AC, Sestário CS, Salles MJS. Pregabalin alters reproductive performance in male mice and causes congenital anomalies in offspring. Reproduction, fertility, and development 2023. link 6 Philibert P, Stévant I, Déjardin S, Girard M, Sellem E, Durix Q et al.. Intergenerational effects on fertility in male and female mice after chronic exposure to environmental doses of NSAIDs and 17α-ethinylestradiol mixtures. Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association 2023. link 7 Barbosa MG, Jorge BC, Stein J, Santos Ferreira DA, Barreto ACDS, Reis ACC et al.. Pre-pubertal exposure to ibuprofen impairs sperm parameters in male adult rats and compromises the next generation. Journal of toxicology and environmental health. Part A 2020. link 8 Pereira MRF, Aleixo JF, Cavalcanti LF, Costa NO, Vieira ML, Ceravolo GS et al.. Can maternal exposure to paracetamol impair reproductive parameters of male rat offspring?. Reproductive toxicology (Elmsford, N.Y.) 2020. link 9 Ommati MM, Heidari R, Jamshidzadeh A, Zamiri MJ, Sun Z, Sabouri S et al.. Dual effects of sulfasalazine on rat sperm characteristics, spermatogenesis, and steroidogenesis in two experimental models. Toxicology letters 2018. link 10 Chehrei S, Moradi M, Ghiabi HR, Falahi M, Kaviani S, Ghanbari A. Pentoxifylline besides naltrexone recovers morphine-induced inflammation in male reproductive system of rats by regulating Toll-like receptor pathway. Andrologia 2017. link 11 Nna VU, Osim EE. Testicular toxicity following separate and combined administration of PDE5 inhibitors and opioid: assessment of recovery following their withdrawal. Andrologia 2017. link 12 Abdellatief RB, Elgamal DA, Mohamed EE. Effects of chronic tramadol administration on testicular tissue in rats: an experimental study. Andrologia 2015. link 13 Sikka SC, Chen C, Almas M, Dula E, Knapp LE, Hellstrom WJ. Pregabalin does not affect sperm production in healthy volunteers: a randomized, double-blind, placebo-controlled, noninferiority study. Pain practice : the official journal of World Institute of Pain 2015. link 14 Ahmed MA, Kurkar A. Effects of opioid (tramadol) treatment on testicular functions in adult male rats: The role of nitric oxide and oxidative stress. Clinical and experimental pharmacology & physiology 2014. link 15 Dickinson AL, Leach MC, Flecknell PA. The analgesic effects of oral paracetamol in two strains of mice undergoing vasectomy. Laboratory animals 2009. link 16 Mogilner JG, Lurie M, Coran AG, Nativ O, Shiloni E, Sukhotnik I. Effect of diclofenac on germ cell apoptosis following testicular ischemia-reperfusion injury in a rat. Pediatric surgery international 2006. link 17 Janett F, Aebi L, Burger D, Imboden I, Hässig M, Kindahl H et al.. Influence of vedaprofen (Quadrisol) on quality and freezability of stallion semen. Theriogenology 2005. link 18 Fukushima T, Kato M, Adachi T, Hamada Y, Horimoto M, Komiyama M et al.. Effects of sulfasalazine on sperm acrosome reaction and gene expression in the male reproductive organs of rats. Toxicological sciences : an official journal of the Society of Toxicology 2005. link 19 Chen YF, Lin YT, Tan TW, Tsai HY. Effects of veratrine and paeoniflorin on isolated mouse vas deferens. Phytomedicine : international journal of phytotherapy and phytopharmacology 2002. link

    Original source

    1. [1]
      Effects of major analgesics on male fertility: A systematic literature review. — Capelo MF, Monteiro PB, Anastácio BM JBRA assisted reproduction (2024)
    2. [2]
      Effect of different doses of transdermal fentanyl on the reproductive system in male rats. — Kosal V, Kurt N, Okulmus C, Keles OF Pakistan journal of pharmaceutical sciences (2025)
    3. [3]
      Ibuprofen use and male infertility: Insights from a nationwide retrospective cohort study. — Huang WT, Wang JH, Ding DC European journal of obstetrics, gynecology, and reproductive biology (2025)
    4. [4]
      Negative effects of ketoprofen and meloxicam on distal cauda epidydimal duct contractions, testosterone levels, and sperm count in rats. — Rodrigues RTGA, Marques VB, Silva MSD, Gomes LTDC, Sena MO, Figueiredo BDS et al. Reproductive biology (2024)
    5. [5]
      Pregabalin alters reproductive performance in male mice and causes congenital anomalies in offspring. — Mestre VF, Martins CCN, Brito LV, Zeffa AC, Sestário CS, Salles MJS Reproduction, fertility, and development (2023)
    6. [6]
      Intergenerational effects on fertility in male and female mice after chronic exposure to environmental doses of NSAIDs and 17α-ethinylestradiol mixtures. — Philibert P, Stévant I, Déjardin S, Girard M, Sellem E, Durix Q et al. Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association (2023)
    7. [7]
      Pre-pubertal exposure to ibuprofen impairs sperm parameters in male adult rats and compromises the next generation. — Barbosa MG, Jorge BC, Stein J, Santos Ferreira DA, Barreto ACDS, Reis ACC et al. Journal of toxicology and environmental health. Part A (2020)
    8. [8]
      Can maternal exposure to paracetamol impair reproductive parameters of male rat offspring? — Pereira MRF, Aleixo JF, Cavalcanti LF, Costa NO, Vieira ML, Ceravolo GS et al. Reproductive toxicology (Elmsford, N.Y.) (2020)
    9. [9]
      Dual effects of sulfasalazine on rat sperm characteristics, spermatogenesis, and steroidogenesis in two experimental models. — Ommati MM, Heidari R, Jamshidzadeh A, Zamiri MJ, Sun Z, Sabouri S et al. Toxicology letters (2018)
    10. [10]
      Pentoxifylline besides naltrexone recovers morphine-induced inflammation in male reproductive system of rats by regulating Toll-like receptor pathway. — Chehrei S, Moradi M, Ghiabi HR, Falahi M, Kaviani S, Ghanbari A Andrologia (2017)
    11. [11]
      Testicular toxicity following separate and combined administration of PDE5 inhibitors and opioid: assessment of recovery following their withdrawal. — Nna VU, Osim EE Andrologia (2017)
    12. [12]
      Effects of chronic tramadol administration on testicular tissue in rats: an experimental study. — Abdellatief RB, Elgamal DA, Mohamed EE Andrologia (2015)
    13. [13]
      Pregabalin does not affect sperm production in healthy volunteers: a randomized, double-blind, placebo-controlled, noninferiority study. — Sikka SC, Chen C, Almas M, Dula E, Knapp LE, Hellstrom WJ Pain practice : the official journal of World Institute of Pain (2015)
    14. [14]
      Effects of opioid (tramadol) treatment on testicular functions in adult male rats: The role of nitric oxide and oxidative stress. — Ahmed MA, Kurkar A Clinical and experimental pharmacology & physiology (2014)
    15. [15]
      The analgesic effects of oral paracetamol in two strains of mice undergoing vasectomy. — Dickinson AL, Leach MC, Flecknell PA Laboratory animals (2009)
    16. [16]
      Effect of diclofenac on germ cell apoptosis following testicular ischemia-reperfusion injury in a rat. — Mogilner JG, Lurie M, Coran AG, Nativ O, Shiloni E, Sukhotnik I Pediatric surgery international (2006)
    17. [17]
      Influence of vedaprofen (Quadrisol) on quality and freezability of stallion semen. — Janett F, Aebi L, Burger D, Imboden I, Hässig M, Kindahl H et al. Theriogenology (2005)
    18. [18]
      Effects of sulfasalazine on sperm acrosome reaction and gene expression in the male reproductive organs of rats. — Fukushima T, Kato M, Adachi T, Hamada Y, Horimoto M, Komiyama M et al. Toxicological sciences : an official journal of the Society of Toxicology (2005)
    19. [19]
      Effects of veratrine and paeoniflorin on isolated mouse vas deferens. — Chen YF, Lin YT, Tan TW, Tsai HY Phytomedicine : international journal of phytotherapy and phytopharmacology (2002)

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG