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Mannose
Mannose
Low concern
D-mannose occurs naturally in many fruits and is partially absorbed and largely excreted unchanged in urine. It is well tolerated; high doses (≥5 g/day) may cause loose stools or bloating.
Found in
6 products
What it is
A simple monosaccharide (hexose), epimer of glucose; D-mannose is the biologically common form.
Sweetener and dietary supplement (often marketed for urinary tract support).
Why it's flagged
- mild GI upset at high doses
- use caution in diabetes
What regulators actually say
"D-mannose powder for prevention of recurrent urinary tract infection: a randomized clinical trial — generally well tolerated with mild GI side effects in some users."
Regulatory status
United States — FDA
Marketed as dietary supplement under DSHEA; component of conventional foods.
European Union — EFSA
Permitted as food/food supplement.
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