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The effect of soy milk on levothyroxine absorption

The effect of soy milk on levothyroxine absorption

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20191217002
Enrollment
10
Registered
2019-12-17
Start date
2019-10-01
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

levothyroxine absortption levothyroxine absorption soy milk

Interventions

Levothyroxine absorption test while consumed Levothyroxine with water,Levothyroxine absorption test while consumed Levothyroxine with soy milk
Placebo Comparator Drug,Active Comparator Drug
Levothyroxine absorption with water,Levothyroxine absorption with soy milk

Sponsors

Faculty of Medicine Ramathibodi Hospital, Mahidol University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1. Healthy volunteers 2. Aged 18-45 years 3. Written informed consent by volunteer

Exclusion criteria

Exclusion criteria: 1. Adults with recent acute illness, cardiovascular disease/abnormal electrocardiogram, renal insufficiency (serum creatinine >1.5 mg/dL), abnormal liver function (AST and/or ALT > 3 times of upper normal limit) 2. Use of certain medications that interfere with levothyroxine absorption such as iron, calcium, proton pump inhibitor, sucralfate, aluminium hydroxide, cholestyramine; affect with levothyroxine metabolism such as phenytoin, carbamazepine, phenobarbital, rifampicin, tyrosine kinase inhibitor 3. Use of certain medications that alter thyroid hormone levels such as amiodaraone, lithium, interfereon-alpha, alemtuzumab, glucocorticoid, somatostatin 4. Use of certain medications that affect with thyroxine-binding globulin such as estrogen, raloxifene, tamoxifen, mitotane, fluorouracil, methadone, heroin, androgen, nicotinic acid 5. Adults who had intestinal absorption problem or history of gastric/intestinal surgery 6. Adults with allergy to soy and/or levothyroxine 7. Pregnant women/lactating women 8. Adults who has abnormal TSH concentrations 9. Denied to participate in the study

Design outcomes

Primary

MeasureTime frame
Levothyroxine absorption test October 2019-September 2020 Area under the curve (AUC) of serum total T4 concentration

Secondary

MeasureTime frame
analgesic usage until patient get operative fixation morphine dose requirement,complication until patient get operative fixation observe ex pressure sore peroneal nerve palsy

Countries

Thailand

Contacts

Public ContactChutintorn Sriphrapradang

Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine Ramathibodi Ho

chutins@gmail.com+6622011647

Outcome results

None listed

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