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Novel stimulant bk-EBDP /Ephylone (N-Ethyl-Pentylone, βk-Ethyl-K, βk-EBDP)

bk-EBDP Crystals is a chemical research compound that is classified as a stimulant. The IUPAC name for bk-EBDP Crystals is (benzo[d][1,3]dioxo1-5-y1)-2-(ethylamino)pentan-1-one.

β-Keto-3,4-methylenedioxy-alpha-propyl-N-ethyl-phenethylamine (Ephylone, BK-Ethyl-K, BK-EBDP) is a stimulant compound developed in the 1960s, which has been reported as a novel designer drug, identified in some samples of powders sold as “ETHYL-K”.

Research result shows that Ephylone has similar effects as to ethylone.

bk-EBDP is a psychoactive drug and member of the phenethylamine chemical class which acts as an entactogen, psychedelic, and stimulant. It is the N-ethyl analog of 1,3-benzodioxolylpentanamine (BDP; K).

Ethyl-K was first synthesized by Alexander Shulgin.

Detailed Description

Product name: bk-ebdp,ephylone

IUPAC.: 1-(benzo[d][1,3]dioxol-5-yl)-2-(ethylamino)pentan-1-one

Appearance: large crystals


„I have tested this one out at 100mg and it was quite the beautiful experience! Very very close to methylone, however it seems to pack more of a punch. „

Physical effects

Spontaneous tactile sensations – The “body high” of bk-EBDP can be described as a moderate to extreme euphoric tingling sensation that encompasses the entire body. It is capable of becoming overwhelmingly pleasurable at higher doses. This sensation maintains a consistent presence that steadily rises with the onset and hits its limit once the peak has been reached.

Stimulation – In terms of its effects on the user’s physical energy levels, bk-EBDP is commonly considered to be extremely stimulating and energetic. This encourages activities such as running, climbing and dancing in a way that makes bk-EBDP a popular choice for musical events such as festivals and raves. The particular style of stimulation which bk-EBDP presents can be described as forced. This means that at higher doses, it becomes difficult or impossible to keep still as jaw clenching, involuntarily bodily shakes, and vibrations become present, resulting in an extreme unsteadiness of the hands and a general lack of motor control.

Vibrating vision – At high doses, a person’s eyeballs may begin to spontaneously wiggle back and forth in a rapid motion, causing the vision to become blurry and temporarily out of focus. This is a condition known as nystagmus.

Dehydration – Feelings of dry mouth and dehydration are a universal experience with bk-EBDP; this effect is a product of an increased heart rate and an extreme motivation to engage in strenuous physical activities. While it is important to avoid becoming dehydrated (especially when out dancing in a hot environment) there have been a number of users suffering from water intoxication through over-drinking, so it is advised that users simply sip at water and never over-drink.

Difficulty urinating – Higher doses of bk-EBDP result in an overall difficulty when it comes to urination. This is an effect that is completely temporary and harmless. It is due to bk-EBDP’s promotion of the release of anti-diuretic hormone (ADH). ADH is responsible for regulating urination. This effect can be lessened by simply relaxing, but can be significantly relieved by placing a hot flannel over the genitals to warm them up and encourage blood flow.

Temperature regulation suppression

Tactile enhancement

Increased heart rate

Increased perspiration

Increased blood pressure

Cognitive effects

The cognitive effects of bk-EBDP can be broken down into several components which progressively intensify proportional to dosage. The general head space of bk-EBDP is described by many as one of extreme mental stimulation, feelings of love or empathy and powerful euphoria. It contains a large number of typical psychedelic, entactogenic and stimulant cognitive effects.

The most prominent of these cognitive effects generally include:

Cognitive euphoria – Strong emotional euphoria and feelings of happiness are present within bk-EBDP and are likely a direct result of serotonin and dopamine release. In comparison to MDMA, it is closer in effects to that of the euphoria felt within amphetamine and mephedrone.

Empathy, love and sociability enhancement – Although distinct and powerful in its effects, this particular feeling is less pronounced and therapeutic when compared to that of MDMA. It can be described as less forceful and more internal in its manifestation, resulting in feelings of love and empathy that are not necessarily felt as essential to express to others.

Time distortion – Strong feelings of time compression are common within bk-EBDP and speed up the experience of time quite noticeably.

Thought acceleration

Analysis enhancement


After effects

The effects which occur during the offset of a stimulant experience generally feel negative and uncomfortable in comparison to the effects which occurred during its peak. This is often referred to as a “comedown” and occurs because of neurotransmitter depletion. Its effects commonly include:

Cognitive fatigue

Thought deceleration






Light 125-175mg

Common 200-250mg

Strong 250-400mg


Onset 30-45 minutes

Duration 2-4 hours

After-effects 6-24 hours

Additional information


10 Grams, 25 Grams, 50 Grams, 100 Grams, 250 Grams, 500 Grams, 1000 Grams