Food Supplements - Glucosamine Sulfate - Contraindications / Precautions / Warnings

A number of preparations process glucosamine with sodium chloride (table salt). If you have high blood pressure or are otherwise restricted from a high sodium intake, look for sodium-free glucosamine preparations.

Some people experience drowsiness, headaches, mild digestive upset, and skin reactions when supplementing with glucosamine over the short-term.