Supporting evidence

Melatonin × HbA1c

Authoritative support
3
Available studies
3
Unavailable support
0

Available supporting studies

Study 1 · Included

Melatonin improves glycemic control in type 2 diabetes patients

Rct

Comparison
Patients received two tablets of 250 mg melatonin once a day for 8 weeks. · Patients received two tablets of placebo once a day for 8 weeks.
Duration / follow-up
8 weeks

Relevant effect

Mean difference

1.3 · 0.02

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Study 2 · Included

Melatonin shows little effect on glycemic control in type 2 diabetes

Rct

Comparison
Patients receiving 6 mg of melatonin nightly. · Patients receiving a placebo that contained cellulose instead of melatonin.
Duration / follow-up
10 weeks

Relevant effect

Absolute change

0 · 0.912

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Study 3 · Included

Melatonin shows no effect on diabetes risk markers in night workers

Rct

Comparison
Participants received synthetic melatonin only on days off and between shifts for 12 weeks. · Participants were instructed to take a placebo pill identical in appearance to the melatonin pill for 12 weeks.
Duration / follow-up
4 weeks
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