Trial reportClinical and translational science2025
Single Center, Open-Label, Randomized Crossover Trial on Drug-Drug Interactions of Levothyroxine/Magnesium-Citrate and Levothyroxine/Magnesium-Aspartate in Healthy Subjects-The ThyroMag Trial.
Trial report in Clinical and translational science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Divalent cations such as calcium and ferrous sulfate interfere with the absorption of levothyroxine due to complexing. To our knowledge, the effects of magnesium on levothyroxine absorption have never been studied. The open-label cross-over pharmacokinetic study was conducted in 15 healthy, euthyroid adults. 1 mg of levothyroxine was administered in tablet form alone or co-administered with either magnesium aspartate or magnesium citrate. Participants received all three treatments, separated by a washout period, but were randomly allocated 1:1:1 to one of three treatment sequences. We measured thyroxine (T4) over a 6-h period after ingestion. The primary endpoint was the area under the curve (AUC) of thyroxine; secondary endpoints were C
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.