ClinicalTrials.gg
RecruitingNCT07252518Updated Nov 26, 2025

Effect of Pentoxifylline + CoQ10 vs CoQ10 Alone on Sperm Motility in Subfertile Men With Asthenozoospermia

An interventional study of Coenzyme Q 10 and Pentoxifylline 400 MG Oral Tablet in Asthenozoospermia, sponsored by Mst.Sumyara Khatun. Recruiting at 1 site in Bangladesh. Open to male participants aged 20 Years to 50 Years. Per ClinicalTrials.gov, last updated 2025-11-26.

Sponsored by Mst.Sumyara Khatun · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jul 2026, 4 months ago, but the record still lists the study as recruiting.
  • Started Oct 2025; still recruiting 1 year 1 month later.
Phase
Not applicable
Study type
Interventional
Enrollment
56
Allocation
Randomized
Ages
20 Years to 50 Years
Sex
Male
01

Study summary

The goal of this clinical trial is to learn if drug Pentoxifylline plus Coenzyme Q10 work to treat asthenozoospermia in subfertile male. It will also learn about the safety of drug Pentoxifylline plus Coenzyme Q10. The main questions it aims to answer are:

Does drug Pentoxifylline plus Coenzyme Q10 increase the motility of sperm in participants? What medical problems do participants have when taking drug Pentoxifylline plus Coenzyme Q10 ? Researchers will compare drug Pentoxifylline plus Coenzyme Q10 combination to Coenzyme Q10 alone to see if drug Pentoxifylline plus Coenzyme Q10 combination works better.

Participants will:

Experimental Group:Pentoxifylline 400mg twice dailyand Coenzyme Q10 100mg twice daily for 3 months.

Comparator Group: Coenzyme Q10 100mg twice daily for 3 months Visit the clinic after three months of treatment for checkups and tests

Read the detailed description

This Randomized controlled trial will be conducted in the Department of Reproductive Endocrinology \& Infertility, BMU from the day of approval. Ethical clearance will be obtained from the Institutional Review Board. A total 56 sub-fertile men with asthenozoospermia (Total motility 20% to \<42%), according to WHO Laboratory manual 6th Edition in 2021, fulfilling the inclusion and exclusion criteria.will be approached for informed written consent after discussing the purpose and procedure of the study. Participants will be recruited from our OPD-2, room no-301 and referred outdoor room no-108, department of Reproductive Endocrinology \& Infertility.Baseline infertility investigations and semen analysis will be done. Detailed socio-demographic data, history, and investigations will be recorded in a predesigned data sheet. Eligible men who will give their informed consent will be randomized to either. Random sequence generation will be done by someone not involved in the study. Allocation concealment will be done by serially numbered closed opaque envelopes. Each envelope will be labeled with a serial number and will have a card noting the intervention type. Allocation will never be changed after opening the closed envelopes.At baseline, a minimum of two specimen will be collected at 4 weeks intervaland the second results showing asthenozoospermia will be considered as the baseline results.Semen sample will be collected after maintaining 3-5 days of abstinence, in the semen collection room no-110 of Reproductive Endocrinology \& Infertility, BMU by masturbation in a sterile plastic container. After getting the samples, they will be allowed to liquefy at 37 degrees Celsius and then will be analyzed according WHO,2021, in the laboratory of Reproductive Endocrinology \& Infertility department. The sperm parameter will be checked by Makler Counting Chamber. An aliquot (0.5 ml) of each well-mixed semen sample will be placed on the Makler counting chamber, and the coverslip will be applied. Motility evaluation will be performed within 3-5 minutes after application of the sample to avoid errors due to tendency of sperm to migrate from the periphery. All non-motile sperms will be counted within 9 or 16 squares. Then motile sperms will be counted in the same area and the grade of motility will be estimated from +1 to +4. This procedure will be repeated in another area of the grid,as well as from another 3-4 drops and the average will be calculated.

Experimental Group will receive (Pentoxifylline 400mg and Coenzyme Q10 100mg) twice daily and ComparatorGroup will receive (Coenzyme Q10 100mg) twice daily for 3 months. They will be informed not to take other medications that could affect spermatogenesis during the study period expect after counseling physician.

02

Conditions studied

  • Asthenozoospermia

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Keywords

  • Asthenozoospermia
  • Pentoxifylline
  • Coenzyme Q10
03

In context

Asthenozoospermia

32 studies on the registry are indexed under Asthenozoospermia; 9 are open to participants now.

This study's planned enrollment of 56 is close to the median of 62 across 25 interventional studies indexed under Asthenozoospermia.

Browse Asthenozoospermia studies →

Lead sponsor

Mst.Sumyara Khatun is the lead sponsor of 16 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 50 Years
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Sub fertile men with asthenozoospermia(Total motility20% to less than 42%) according to WHO semen analysis,2021.
  • Age 20-50 years.

Exclusion criteria

Exclusion Criteria:

  • Severe oligoasthenoteratozoospermia
  • Any medical, endocrine and genetic disorders, history of chemotherapy or radiotherapy, genital infection, genital surgery.
  • Antioxidants supplmentation in the last 3 months
  • Drug, alcohol or substance abuse, psycho-sexual abnormalities.
  • Any known to xanthine related product, recent cerebral or retinal haemorrhage Severe oligoasthenoteratozoospermia
  • Any medical, endocrine and genetic disorders, history of chemotherapy or radiotherapy, genital infection, genital surgery.
  • Antioxidants supplmentation in the last 3 months
  • Drug, alcohol or substance abuse, psycho-sexual abnormalities.
  • Any known hypersensitivity to xanthine related product, recent cerebral or retinal haemorrhage
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
56 participants (estimated)

Study arms

  • Experimental
    Experimental (PTX+ CoQ10)

    Participants receive pentoxifylline 400mg orally twice daily plus Coenzyme Q10 100mg twice daily orally

    Combination Product: Pentoxifylline 400 MG Oral Tablet

  • Active comparator
    Active Comparator (Coenzyme Q10)

    Participants receive Coenzyme Q10 100mg twice daily orally

    Dietary Supplement: Coenzyme Q 10

Interventions

  • Dietary supplementCoenzyme Q 10

    Participants will receive Coenzyme Q10 100 mg twice daily for 3 months

  • Participants will receive pentoxifylline 400mg twice daily plus coenzyme Q10 100mg twice daily for 3 months

    Also known as: Coenzyme Q10

06

What researchers measure

Primary outcomes

  1. Progressive sperm motility

    Percentage of sperm showing progressive motility (WHO catagories A+B) on microscopic examination,measured using WHO manual standards,after 30-60 minutes liquefaction, at 37 degree celcius, averaged over two independent readings by trained laboratory technicians blinded to treatment allocatiob

    Time frame: Baseline(pre treatment) and 12 weeks after start

Secondary outcomes

  1. Total sperm motility

    Percentage of motile sperm (WHO catagories A+B+C) measured on fresh semen samples using WHO semen analysis method (latest edition) .Total motility is the percentage of sperm showing any motility (progressive and non progressive ) at the time of analysis.

    Time frame: Baseline (pre treatment) and 12 weeks after start of treatment

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Alahmar AT. The effects of oral antioxidants on the semen of men with idiopathic oligoasthenoteratozoospermia. Clin Exp Reprod Med. 2018 Jun;45(2):57-66. doi: 10.5653/cerm.2018.45.2.57. Epub 2018 Jun 29. PubMed 29984205 ↗
  • Barbonetti A, Tienforti D, Castellini C, Giulio FD, Muselli M, Pizzocaro A, Vena W, Baroni MG, Pivonello R, Isidori AM, Maggi M, Corona G. Effect of antioxidants on semen parameters in men with oligo-astheno-teratozoospermia: a network meta-analysis. Andrology. 2024 Mar;12(3):538-552. doi: 10.1111/andr.13498. Epub 2023 Jul 26. PubMed 37495550 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Oct 2025 (actual). Primary completion is estimated for Jul 2026, 9 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 17, 2025
First posted
Nov 26, 2025
StartActual
Oct 1, 2025
Primary completionEst.
Jul 1, 2026
CompletionEst.
Mar 1, 2027
Last update
Nov 26, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 26, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07252518
Lead sponsor
Mst.Sumyara Khatun
Collaborators
Bangladesh Medical University
Responsible party
Mst.Sumyara Khatun (Medical officer, Bangladesh Medical University) — Sponsor-investigator
First posted
Nov 26, 2025
Start date
Oct 1, 2025
Primary completion
Jul 1, 2026 (estimated)
Completion
Mar 1, 2027 (estimated)
Last update
Nov 26, 2025

Study contacts

Mst.Sumyara Khatun, MS
Contact
sumirmc09@gmail.com
+8801746046581
Kazi Jannatul Ferdouse, MBBS
Contact
jannatulferdouse420@gmail.com
+8801715595597
Jesmine Banu, MS
principal investigator · Bangladesh Medical University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Pentoxifylline

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