How long after leaving a tampon in before getting TSS?

How Long Can You Safely Leave a Tampon In?

Many people wonder how long it’s safe to leave a tampon in before risking toxic shock syndrome (TSS). While TSS is rare, it’s a serious condition linked to certain bacteria, particularly Staphylococcus aureus, which can grow more rapidly when a tampon is left in too long.

The general medical advice is to change your tampon every four to eight hours. After eight hours, the risk of bacterial overgrowth increases, which in rare cases can lead to TSS. But exceeding eight hours doesn’t automatically mean you’ll get TSS — it simply raises the risk. Factors like tampon absorbency also play a role; higher absorbency tampons can create a more favorable environment for bacteria.

It's important to note that TSS isn’t exclusive to tampon use — it can occur in men, children, and even people who don't use tampons. However, in menstruating individuals, prolonged tampon use is one known risk factor. Symptoms of TSS include sudden high fever, vomiting, diarrhea, dizziness, a rash that looks like sunburn (especially on the palms and soles), and confusion. If these occur during or right after using tampons, seek medical help immediately.

To stay safe, consider alternating between tampons and pads, especially overnight. If you forget a tampon in for more than eight hours and feel fine, you’re likely okay — but make it a habit to check and change regularly. Listening to your body and practicing good menstrual hygiene goes a long way in minimizing any risk.