Meta Information
ID:d-mannose
Name:
Schema Version:AIM-2.0
Interactions
Target id:
/dietary/water
Target name:
Adequate Hydration
Severity:
major
Interaction type:
requirement
Nature:
absolute
Temporal spacing:
null
Description:
The efficacy of D-Mannose relies on sufficient urine flow to flush out bacteria that have been prevented from adhering to the bladder wall. Dehydration severely compromises this primary mechanism of action.
Actionable advice:
Ensure you drink plenty of water and other fluids throughout the day when taking D-Mannose.
Target id:
/condition/carbohydrate-metabolism-disorder
Target name:
Carbohydrate Metabolism Disorders
Severity:
major
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
Individuals with certain rare genetic conditions, such as Congenital Disorder of Glycosylation Type 1b (MPI-CDG), cannot properly metabolize D-Mannose, which can lead to severe adverse effects like hypoglycemia and protein-losing enteropathy.
Actionable advice:
Do not take D-Mannose if you have a known genetic disorder of carbohydrate metabolism.
Target id:
/dietary/meal
Target name:
Any Caloric Meal
Severity:
moderate
Interaction type:
diminishing
Nature:
temporal
Temporal spacing:
Hours before target:
1
Hours after target:
2
Description:
Taking D-Mannose with food can slow its absorption and subsequent excretion into the urine, potentially reducing its peak concentration in the bladder where it exerts its effect.
Actionable advice:
Take D-Mannose on an empty stomach, at least 1 hour before or 2 hours after a meal, with a full glass of water.
Target id:
/condition/renal-impairment
Target name:
Renal Impairment
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
D-Mannose is cleared from the body by the kidneys. Its safety in individuals with significant renal impairment has not been established, and there is a theoretical risk of accumulation or kidney strain with high, long-term doses.
Actionable advice:
Consult a healthcare provider before using D-Mannose if you have known kidney disease.
Target id:
/condition/pregnancy
Target name:
Pregnancy
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
The safety of D-Mannose supplementation during pregnancy has not been rigorously studied. Due to the lack of robust safety data, its use is not recommended without medical supervision.
Actionable advice:
Avoid using D-Mannose during pregnancy unless specifically directed by your healthcare provider.
Target id:
/condition/lactation
Target name:
Breastfeeding (Lactation)
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
It is unknown if D-Mannose is excreted in breast milk or what effects it may have on a nursing infant. Its use is not recommended due to a lack of safety data.
Actionable advice:
Avoid using D-Mannose while breastfeeding unless directed by your healthcare provider.
Target id:
/condition/sibo
Target name:
Small Intestinal Bacterial Overgrowth (SIBO)
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
As a poorly absorbed sugar, D-Mannose can be fermented by bacteria in the small intestine, potentially exacerbating symptoms like bloating, gas, and abdominal pain in individuals with SIBO.
Actionable advice:
Use with caution or avoid if you have SIBO, as it may worsen symptoms.
Target id:
/condition/diabetes-mellitus
Target name:
Diabetes Mellitus
Severity:
minor
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
Although D-Mannose is poorly metabolized and most studies show no significant impact at standard doses, very high or chronic doses could theoretically affect blood glucose levels.
Actionable advice:
Monitor blood glucose levels, especially when starting D-Mannose or using doses higher than 2-3 grams per day.
Target id:
/class/antidiabetic-medications
Target name:
Diabetes Medications
Severity:
minor
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
Theoretically, high doses of D-Mannose could affect blood sugar control, potentially requiring adjustments to the dosage of antidiabetic medications to maintain glycemic targets.
Actionable advice:
Monitor blood glucose when taking D-Mannose concurrently and consult your doctor if you notice significant changes.
Target id:
/class/anticoagulants-antiplatelets
Target name:
Anticoagulants and Antiplatelets
Severity:
minor
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
null
Description:
A single case report suggested a potential interaction with warfarin, but this is not well-established and the mechanism is unknown. The risk is considered theoretical and low.
Actionable advice:
Use with caution and monitor for any changes in bleeding or bruising if taking with anticoagulant medications.
Target id:
/intervention/cranberry-extract
Target name:
Cranberry Extract
Severity:
minor
Interaction type:
synergistic
Nature:
absolute
Temporal spacing:
null
Description:
Both D-Mannose and proanthocyanidins (PACs) from cranberry work via an anti-adhesion mechanism to prevent bacteria from sticking to the urinary tract walls, potentially offering a complementary effect.
Actionable advice:
Consider taking with cranberry extract for potentially enhanced urinary tract support.