When ingested 90% is absorbed from the gastrointestinal tract (GIT). The maximum concentration in the blood plasma (Cmax) is achieved after 3-4 hours, in synovial fluid - after 4-5 hours Bioavailability in relation to the synovial fluid:
- for chondroitin-13%;
- for glucosamine - 25% (the effect of "first passage" through the liver is expressed).
When ingestion of chondroitin sodium sulfate once in a dose of 0.8 g (or twice a day at a dose of 0.4 g), the concentration in the plasma increases dramatically over a period of 24 hours. Absolute bioavailability is 12%.
Glucosamine +chondroitin sulfate is distributed in tissues: the highest concentrations are found in the liver, kidneys and articular cartilage. About 30% of the dose is persistently persistent in bone and muscle tissue. About 10 and 20% of the dose received is absorbed in the form of high molecular weight and low molecular weight derivatives, respectively. The apparent volume of distribution is about 0.44 ml / g.
Chondroitin sodium sulfate is metabolized by desulfurization (after administration of low molecular weight chondroitin sodium sulfate). When distributed in tissues, the highest concentrations are found in the liver, kidneys and articular cartilage. About 30% of the dose is persistently persistent in bone and muscle tissue. Glucosamine +chondroitin sulfate is excreted mainly with urine in unchanged form; in part - with feces.
The half-life (T1/2) for glucosamine - 68 hours. Half-life (T1/2) for chondroitin sulfate - 310 min.