PMID: 6402875Mar 1, 1983Paper

Saliva and serum testosterone following oral testosterone undecanoate administration in normal and hypogonadal men

Acta Endocrinologica
T SchürmeyerE Nieschlag

Abstract

Since saliva testosterone reflects the testosterone fraction available to target tissues the therapeutic effectiveness of orally administered testosterone undecanoate was assessed by measuring testosterone in serum and saliva. Matched saliva and serum samples were obtained from 12 normal men and 8 hypogonadal men before and at hourly intervals after the oral administration of 120 mg testosterone undecanoate. The test was repeated in 3 men after they had taken 40 mg testosterone undecanoate twice daily for 4 to 5 weeks. Following testosterone undecanoate administration serum and saliva testosterone always showed parallel increases. However, the absorption curves showed a high interindividual variability in the time when maximum concentrations were reached, as well as in the maximum levels themselves. The increases in serum and saliva testosterone were similar in normal and hypogonadal men. In normal men basal levels were reached 4 h after the maximum had occurred, while in hypogonadal men testosterone levels were not different from basal levels 2 h after the maximum. The study shows that testosterone undecanoate is well absorbed from the gut and releases significantly elevated amounts of testosterone which is available to target...Continue Reading

Citations

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