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1P-LSD is a prodrug of LSD that shares virtually identical effects.

By now, you’re probably familiar with LSD (lysergic acid diethylamide). It’s the quintessential psychedelic substance alongside the active ingredient in magic mushrooms — psilocybin.

What you may not be familiar with is that there are actually dozens of analogs of LSD that have virtually identical effects.

1P-LSD is one such analog. The molecular difference is subtle, and recent research even suggests 1P-LSD is a prodrug of LSD.

1P-LSD is legal in Canada and held in a legal grey area in the United States.


Buy 1P-LSD stands for 1-propionyl-lysergic acid diethylamide. It’s a derivative of LSD — which essentially means it’s a modified version of the classic LSD-25 that Albert Hofmann discovered in 1943.

This molecule is differentiated from LSD by a propionyl group attached to the nitrogen molecule in the indole portion of LSD. The central indole molecule of LSD is the characterizing element of the molecule that’s shared with all other tryptamine-based psychedelics (such as DMT or psilocybin).

1P-LSD itself is only mildly psychedelic. It has a 67-fold less binding affinity for the 5-HT1A receptors, 13-fold less activity at the 5-HT2A receptors, and a 3.5-fold increase at h5-HT2C receptors than LSD-25.

However, 1P-LSD is a prodrug for LSD, which means it’s converted to LSD by the liver, which then goes on to produce psychoactive effects. The bioavailability of LSD from 1P-LSD is nearly 100%.


  • Level of Risk: Low
  • Other Names: Legal acid
  • Most Common Side-Effects: Anxiety & paranoia
  • Duration of Effects: 7-11 hours

What Does 1P-LSD Feel Like?

The effects of 1P-LSD are virtually identical to that of LSD. The only difference is that it can take a little bit longer for the effects to kick in. This is because the 1P-LSD for sale needs to first be metabolized by the liver and turned into LSD.

The experience can vary widely depending on your internal mental state. If you’re depressed or anxious going into the experience, 1P-LSD is going to inflate this even further. Likewise, if you feel excited, positive, and curious, 1P-LSD is going to expand this state of consciousness even further.

This is exactly why the concept of set (mindset) and setting (the environment and people you’re with during the trip) is so important. Going into the experience with a negative attitude, which can include fear, anxiety, or depression, will ultimately lead to a more challenging experience and may even pose psychological harm.

The positive effects of 1P-LSD and other LSD analogs:

  • A strong sense of awe & wonder
  • Altered perception of time
  • Cathartic experiences
  • Deep-reaching insightful experiences
  • Ego-dissolution
  • Euphoria
  • Hallucinations
  • Laughter
  • Mystical experiences
  • Remembrance of significant life events
  • Synesthesia

The negative effects of 1P-LSD and other LSD analogs:

  • Anxiety
  • Believing people are “out to get you”
  • Confusion and frustration when performing routine tasks
  • Feelings of being overwhelmed
  • Paranoia
  • Reliving past traumatic experiences
  • Triggering of psychosis or other mental illness

How Long Does 1P-LSD Last?

1P-LSD lasts roughly the same amount of time as LSD (6 – 10 hours).

When taking 1P-LSD, it gets converted to LSD. This happens quickly but prolongs the amount of time needed for the effects to appear. LSD usually takes less than 30 minutes to kick in, while 1P-LSD for sale can take up to an hour and a half (usually around an hour). This also extends the total duration of the trip.

The estimated duration of effects for acid is 6 to 10 hours, which means 1P-LSD for sale is roughly 7 to 11 hours when you account for this difference.

How to Take 1P-LSD and where to buy 1p-lsd online

1P-LSD is taken the same way as LSD. It’s spread out over a square of blotter paper and then held under the tongue for 10 or 15 minutes before swallowing it whole.

The active ingredients get absorbed through the capillaries under the tongue, directly into the bloodstream.

Most people hold LSD under the tongue for faster onset of effects because it allows it to enter the bloodstream directly — rather than having to travel through the digestive tract first.

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