Effect of 1,000 mg supplement of ascorbic acid during ovarian stimulation on the rate of fertilization: double blind randomized controlled trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

TCTR

Registry ID

TCTR20171109001

Enrollment

164

Registered

2017-11-09

Start date

2017-12-01

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertlie Infertile&#44

Interventions

case,control

Active Comparator Drug,Placebo Comparator Drug

Vitamin c(Ascorbic acid) 500 mg bid pc,Placebo

Eligibility

Sex/Gender

Female

Age

35 Years to 55 Years

Inclusion criteria

Inclusion criteria: infertile female a

Exclusion criteria

Exclusion criteria: -Smoking, alcohol drinking or drug abuse -Vitamin C supplement within 3 months -Inflammatory bowel syndromes or malabsorption syndrome -Chronic kidney disease -Contraindication for vitamin C intake : hemochromatosis, allergy

Design outcomes

Primary

Measure	Time frame
fertilization rate 1.5 year under microscopy	—

Secondary

Measure	Time frame
Total anitioxadant capacity 1.5 year ELISA test	—

Countries

Thailand

Contacts

Public Contactkingkaew mingsuttiporn

Siriraj hospital

kingkaew.msp@gmail.com66896150509

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026

Effect of 1&#44;000 mg supplement of ascorbic acid during ovarian stimulation on the rate of fertilization: double blind randomized controlled trial