The only antidepressant with a half-life substantially in excess of 24 hours is fluoxetine. The parent drug has a half-life of 2 to 4 days and norfluoxetine, its active metabolite, has a half-life of 7 to 15 days. This half-life is even longer at doses above 20 mg/day in physically healthy older patients.
Toxic shock syndrome, or TSS, is a very rare and life-threatening bacterial infection. Some women can be affected by toxic shock syndrome from certain types of tampon, but men and children can also get TSS. Toxic shock syndrome can also be caused by boils, insect bites, scalds, burns or other wounds being infected by Staphylococcus aureus and Streptococcus pyogenes bacteria.
TSS is short hand for Toxic Shock Syndrome. It is an extremely rare (and usually preventable), but serious disease that can occur in men, women and children, sometimes resulting in death. It is mentioned in relation to tampons because some cases of TSS have been associated with the use of tampons and some scientific data suggests that the use of tampons increases the risk of TSS. However, tampons themselves have not been found to cause TSS.