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Timing of Thyroxine Dose In Ramadan

Timing of Thyroxine Dose In Ramadan; a Randomized Control Trial

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05421468
Enrollment
250
Registered
2022-06-16
Start date
2022-03-14
Completion date
2022-10-30
Last updated
2022-06-16

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

Conditions

Hypothyroidism

Brief summary

A Randomized trial comparing two different timing of taking thyroxine in patients with Hypothyroidism during fasting the month of Ramadan.

Detailed description

To date there is debate regarding the best timing of L-thyroxine administration during Ramadan as sufficient evidence is lacking. This study aims to compare two-time points of levothyroxine intake during Ramadan focusing on change in TSH, satisfaction and compliance. A prospective, randomized, open label, multicenter Study. The first group will be will be instructed to take their L-thyroxin dose as per current guidlines at breaking of fast time (sunset) with sip of water then wait 30-60 minutes to consume Iftar meal. The second group (pre-Fajer prayer), patients are going to be instructed to take L-thyroxin dose immediately before start of fast, i.e. Alfajer (dawn) regardless of Suhoor time. The values of Thyroid stimulating hormone (TSH) will be measured two weeks before Ramadan, and 2-4 weeks after Ramadan for comparison.

Interventions

OTHERL-Thyroxine time B (5-15 minutes Before dawn)

Taking thyroxine at two different time points in relation to fasting and food intake; just before dawn and start of fast compared to the usual timing of 30-60minutes after the sunset breakfast meal.

Sponsors

King Abdullah International Medical Research Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Saudi patient (males and female) above 18 years with Primary hypothyroidism on levothyroxine replacement who are willing to fast during Ramadan. * Patients with controlled thyroid function for last 3 months on same dose of levothyroxine.

Exclusion criteria

* Pregnant or lactating women. * Uncontrolled thyroid function test three months prior Ramadan. * Thyroid cancer patients who require suppressed TSH. * Central Hypothyroidism, patient with acute illness. * Patients diagnosed with malabsorption i.e., Celiac Disease, Short bowel, Bariatric surgeries * Use of certain Medications like systemic glucocorticoids, activated charcoal, sucralfate, aluminum hydroxide antacid, bile acid sequestrants, iron, calcium carbonate, PPI, rifampicin, and antiepileptic medications * Renal or hepatic disease: * Creatinine clearance \<0.6 ml/s or serum creatinine ≥200 μmol/l * Alanine transferase ≥2.5 times the upper limit of normal * Active liver disease including jaundice, chronic hepatitis, previous liver transplant * Unwillingness to be randomized or to sign informed consent * Known Psychiatric Disorders * Known uncontrolled substance abuse or alcoholism

Design outcomes

Primary

MeasureTime frameDescription
Thyroid function6 - 8 weeksChange in TSH level

Countries

Saudi Arabia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026