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Product name: ETORPHINE (M99)
Formula: C25H33NO4
Molar mass: 411.542 g/mol
Boiling point: 187 °C (369 °F)
ChemSpider ID: 559231
Elimination half-life: 1 – 4 hours
PubChem CID: 644209
Appearance: Powder

Buy ETORPHINE POWDER (M99) with security from us.

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50 GRAMS $160.00
100 GRAMS $310.00
300 GRAMS $460.00
500 GRAMS $650.00


Buy ETORPHINE POWDER (M99) with security from us.


ETORPHINE POWDER is a semi-synthetic opioid possessing an analgesic potency approximately 1,000–3,000 times that of morphine.It was first prepared in 1960 from oripavine, which does not generally occur in opium poppy extract but rather the related plants Papaver orientale and Papaver bracteatum.

ETORPHINE POWDER is a synthetic cousin of morphine and 40,000 times more powerful. It can be produced from thebaine. It is most often used to immobilize elephants and other large mammals. Etorphine Powder is only available legally for veterinary use and is strictly governed by law.

Veterinary use

ETORPHINE POWDER is available legally only for veterinary use and is strictly governed by law. It is often used to immobilize elephants and other large mammals. Diprenorphine (Revivon) is an opioid receptor antagonist that can be administered in proportion to the amount of etorphine used (1.3 times) to reverse its effects. Veterinary-strength etorphine is fatal to humans. For this reason the package as supplied to vets always includes the human antidote as well as etorphine.

The human antidote is generally naloxone, not diprenorphine, and is always prepared before the preparation of etorphine to be immediately administered following accidental human exposure to etorphine. The LD50 in humans is 30 μg which led to the requirement that the medicine include an equal dose of an antidote, diprenorphine or naloxone.

One of its main advantages is its speed of operation, and more importantly, the speed that diprenorphine reverses its effects. The high incidence of side effects, including severe cardiopulmonary depression, has caused etorphine to fall into disfavor in general veterinary practice. However, its high potency, combined with the rapid action of both etorphine and its antagonist, diprenorphine, means that it has found a place for use in the capture of large mammals such as rhinoceroses and elephants, where rapid onset and rapid recovery are both very important. The high potency of etorphine means that sufficient etorphine can be administered to large wild mammals by projectile syringe (dart). Contact us if you have any questions.

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3 reviews for ETORPHINE POWDER (M99) -99,8% PURITY

  1. Linda

    Fast delivery great products at a great price, very easy to use website you can find what you need quickly.

  2. Kamy

    I was reluctant to buy Etorphine from the internet but took a punt; the goods arrived the following day and were exactly as described.

  3. Christine

    Used before , very easy to order, cheap prices , would recommend and will continue to use

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