MDMA is the specific chemical compound (3,4‑methylenedioxymethamphetamine). "Ecstasy" is a street name for pills or tablets that often contain MDMA but are frequently adulterated with other drugs, fillers, or variable doses. So they are not exactly the same: MDMA denotes the pure substance, while ecstasy refers to recreational products of unpredictable composition and purity, increasing health risks.

MDMA (ecstasy) is illegal in India. It is classified as a controlled psychotropic substance under the Narcotic Drugs and Psychotropic Substances Act, and its manufacture, possession, sale, transport or distribution are criminal offences. Penalties range from fines to rigorous imprisonment, with harsher sentences for trafficking and commercial quantities. No approved medical use or legal recreational use exists in India.

MDMA is primarily a recreational stimulant/empathogen, but medically it’s being studied and used as an adjunct to psychotherapy—most notably for post‑traumatic stress disorder (PTSD) and treatment‑resistant PTSD. Clinical trials also explore MDMA‑assisted therapy for social anxiety (including in autism), couples therapy, and some substance‑use disorders. Research shows promising symptom reduction when combined with structured therapy, not as a stand‑alone medication.

Legally and medically MDMA is classed as a "hard" illicit drug: it's a controlled/schedule I substance because of its potential for harm and misuse. While it may cause less physical dependence than opioids, it still carries serious risks—overheating, dehydration, hyponatraemia, serotonin syndrome, neurotoxicity and psychological dependence—and unregulated pills may contain dangerous adulterants. Clinical research into therapeutic uses continues.

MDMA is illegal for recreational use in most countries: classified as a controlled substance (e.g., Schedule I/Class A), so possession, sale, and production are criminal offenses. Limited exceptions exist for regulated clinical research or authorized therapeutic trials. Some jurisdictions have decriminalised small amounts, but that is not the same as legalization; laws and penalties vary, so check local regulations before any use.

MDMA causes large releases of serotonin, dopamine and noradrenaline by reversing their transporters and blocking reuptake, producing euphoria, empathy, and reduced fear. It also increases oxytocin and affects thermoregulation. Acute risks include hyperthermia, dehydration, hyponatremia, and serotonin syndrome. Repeated use can deplete serotonin, impair mood, memory and cognition, and possibly cause long-term neurochemical and structural changes.