Molly (MDMA) usually leaves your body fluids within a few days, but traces can stick around much longer in hair tests.

Quick answer: how long it stays

Approximate detection windows after a single typical dose :

  • Blood: up to ~24 hours.
  • Saliva: about 1–2 days.
  • Urine: usually 1–3 days, sometimes up to ~5 days, depending on dose and your body.
  • Hair: up to 2–3 months or even ~90 days.

The noticeable “high” lasts around 3–6 hours, but some mental and physical after‑effects (low mood, anxiety, tiredness, trouble concentrating, aches) can linger for several days.

Why it varies so much

How long molly stays in your system and shows on tests depends on:

  • Dose and how often you use (bigger/more frequent doses last and show up longer).
  • Metabolism and body chemistry (liver/kidney function, body fat, age, health).
  • Urine pH (less acidic urine can slow elimination, stretching MDMA’s half‑life from ~8–9 hours to as long as ~16–31 hours).
  • What else is in the pill/capsule (many “molly” products are mixed with other stimulants or substances that have their own detection times).
  • Type and sensitivity of the test (some panels don’t include MDMA specifically, but it can cross‑react as amphetamine/methamphetamine).

Because it typically takes about five half-lives for a drug to be functionally cleared, that puts MDMA’s total elimination somewhere between roughly 1½ days and close to a week in many people.

Effects vs. drug tests

It helps to separate how long you feel it from how long it can test positive :

  • Feeling high: usually peaks at 1–3 hours and lasts 3–6 hours.
  • “Comedown” / after-effects: mood changes, anxiety, insomnia, low energy, and trouble focusing may last up to a week after use.
  • Testing window:
    • Blood: up to ~1 day.
* Saliva: 1–2 days.

* Urine: ~1–3 days (sometimes a bit longer).

* Hair: weeks to months.

If you’re worried about a test or your health

  • There’s no reliable, safe way to “flush” molly from your system quickly; most detox tricks online either don’t work or can be harmful.
  • Trying to cheat a drug test can have legal, medical, or job consequences and isn’t recommended.
  • Regular or heavy MDMA use has been linked to issues like mood problems, heart strain, and possible cognitive changes over time.

If this question is about your own use and you’re feeling unwell, very anxious, depressed, or are thinking about harming yourself, you should get medical help or contact a crisis line (for example, the 988 Suicide & Crisis Lifeline in the U.S.).

Information gathered from public forums or data available on the internet and portrayed here.