Other
Glucosamine — timing, dose & interactions
Building block of cartilage, used for osteoarthritis with mixed trial results. It gained longevity interest after a UK Biobank cohort linked regular use to lower mortality — an observational finding that cannot show cause and effect.
Timing
When to take it
Take with meals; 1,500 mg can be taken at once or split through the day.
Interactions
Glucosamine with other supplements
No documented supplement interactions in our dataset.
Safety
Medications & health conditions
Glucosamine can raise INR on warfarin. Case reports and FDA and WHO adverse-event reports describe higher INR and bleeding in people on warfarin who took glucosamine, often after increasing the dose. Don't start, stop or change glucosamine without your prescriber, and get your INR checked.
Glucosamine may raise blood sugar in some people. NIH notes that glucosamine may increase blood glucose in some people. Check your readings for a few weeks after starting.
Glucosamine: no safety data in pregnancy. Glucosamine has not been studied for safety in pregnancy or breastfeeding. Avoid unless your clinician recommends it.
Buying guide
What to look for on the label
Glucosamine
- Glucosamine sulfate (most studied)
- Shellfish-free versions if you have a shellfish allergy
FAQ
Common questions
When is the best time to take Glucosamine?
Breakfast / Lunch / Dinner. Take with meals; 1,500 mg can be taken at once or split through the day.
Should Glucosamine be taken with food?
Yes. Taking it with a meal reduces stomach upset.
Sources