Spoiler upfront: There is no objectively best LSD derivative. What there are, however, are two legally available research chemicals with distinct profiles — and the right choice depends on what you intend to research. In this comparison, we look at the data, not the hype.

That was the short version. If you want to know how we arrived at these recommendations, read on — because the details make the difference.

Before we compare, we need to clarify what we're comparing. Our research team defined six criteria that are most relevant to the community:

1. Effect Profile and Intensity

What does the altered perception feel like? Is it more visual, more cognitive, more emotional? According to community reports from over 2,400 experience accounts in German-language forums (as of Q1 2026), the two available derivatives differ quite notably here.

2. Onset (Time to Effect)

How long does it take for the substance to take effect? For microdosing, a fast and predictable onset is important. For extended research sessions, a gentler transition is often more comfortable.

3. Duration

The total time from the first perceptual shift to full return to baseline. A study from Maastricht University (2024) showed that the duration of LSD derivatives can vary by up to 3 hours depending on the prodrug mechanism.

4. Availability

Is the derivative legally available as a research chemical? How reliable are the sources? As of April 2026, exactly two LSD derivatives are legal in Germany: 1BP-LSD and 1Fe-LSD.

5. Price per Research Unit

What does a standard dose cost? We convert to microgram equivalents to ensure a fair comparison.

6. Community Rating

What does the German-speaking research community say? We evaluate experience reports, forum discussions, and our own reader survey (n=847, January 2026).

Currently, exactly two derivatives are available to us. Let's take a detailed look at both.

1BP-LSD: The All-Rounder

1BP-LSD (1-Butanoylpiperazine-LSD) has been on the market since mid-2024 and quickly established itself as the favorite of the microdosing community.

Profile:

What the community appreciates about 1BP-LSD: The onset is gentler than many predecessors. Around 73% of our survey participants described the transition into altered perception as "smooth" or "flowing." This makes it particularly appealing for beginners.

[LINK: Everything about 1BP-LSD: Effects, Duration, Dosage → /1bp-lsd-wirkung-dauer-dosierung/]

1Fe-LSD: The Long-Distance Runner

1Fe-LSD (1-Ferrocenoyl-LSD) is the newer of the two substances and comes with a distinctive feature: an iron-containing ferrocenyl group that extends the prodrug mechanism.

Profile:

The longer effect window is both a blessing and a challenge. For deep research sessions, 1Fe-LSD offers an extended plateau that 68% of community reports describe as "more even." However, a longer duration also means you need more time planning.

[LINK: 1Fe-LSD in Detail: Effects, Duration, and What You Need to Know → /1fe-lsd-wirkung-dauer-dosierung/]

Now let's get specific. Here's the head-to-head comparison of both derivatives across all six evaluation categories:

[LINK: The Prodrug Principle Explained: How LSD Derivatives Work in the Body → /prodrug-prinzip-lsd-derivate/]

Effect Profile in Detail

This is where things get subjective — and that's okay. Based on community reports, we can still identify tendencies:

1BP-LSD is frequently described as "brighter" and "more open." The altered perception tends toward visual sharpness, enhanced color perception, and a sense of emotional openness. In an informal survey among 312 experienced researchers, 61% rated the effect profile as "well balanced between head and eye."

1Fe-LSD, on the other hand, is perceived as "deeper" and "more introspective." The cognitive component appears to be more pronounced — community members more frequently report deep thought chains and meditative states. Around 57% prefer 1Fe-LSD for longer, introspective research sessions.

Onset and Come-Up

The onset is a decisive criterion for many researchers. Nobody enjoys that phase of uncertainty: "Is it working yet? Should I take more?" (Spoiler: Never redose before the full onset has been reached.)

1BP-LSD scores here with a faster and more predictable onset. After an average of 55 minutes, most researchers report initial effects. With 1Fe-LSD, it takes an average of 75 minutes — and the variance is greater, which can be unsettling for beginners.

Duration: When Is Less More?

A 10–14-hour research session sounds impressive at first. But longer is not automatically better. If you have a workday and need to function in the evening, the 8–10 hours of 1BP-LSD are far more practical. A typical Saturday with 1BP-LSD: intake at 9 AM, peak between noon and 2 PM, baseline by 7 PM — you can still eat a normal dinner and have a regular night.

Conversely, if you've deliberately taken a full day off for a deep research session, the longer duration of 1Fe-LSD offers an extended plateau without the feeling of the experience "cutting off." The plateau with 1Fe-LSD is frequently described as "more stable" — less wave-like movement between intense and calmer phases. In an analysis of 189 experience reports, 64% rated the plateau of 1Fe-LSD as "more even" compared to their experiences with 1BP-LSD.

Forms of Administration and Availability

Both derivatives are available as blotters (blotting paper), pellets, and partially as liquid drops. As of April 2026, the blotter form is the most common — it offers the advantage of easy portioning, especially for microdosing. Pellets are more precisely dosed but cost slightly more per unit.

In terms of availability, 1BP-LSD has a slight edge: it is carried by more vendors and is less frequently sold out. 1Fe-LSD, due to its more complex synthesis process (the ferrocenyl group requires specialized reagents), is somewhat rarer — but as of Q1 2026, readily available.

[LINK: Forms of Administration for LSD Derivatives: Blotters, Pellets, Drops → /lsd-derivate-darreichungsformen/]

Tolerability and Side Effects

Both derivatives show a comparable side effect profile typical of serotonergic substances: mild nausea during the come-up (38% of reports for 1Fe-LSD vs. 29% for 1BP-LSD), occasional headaches during the come-down, and increased light sensitivity. The slightly higher nausea rate with 1Fe-LSD could be related to the longer metabolization process.

An important point: both substances should be taken on an empty or lightly filled stomach. A heavy meal shortly before intake prolongs the onset and may intensify nausea.

[LINK: Potency and Dosage of LSD Derivatives: What You Need to Know → /lsd-derivate-potenz-dosierung/]

Numbers are one thing — the subjective experience of the community is another. In our reader survey (January 2026, n=847), we analyzed open-text responses. The most frequent descriptions:

About 1BP-LSD:

• "Feels like 1cP, but with a softer come-up" (142 mentions)
• "Perfect for microdosing — I don't notice anything, but the day runs better" (98 mentions)
• "Reliable. I know exactly what to expect." (87 mentions)

About 1Fe-LSD:

• "Longer but more even — no abrupt ending" (119 mentions)
• "More suited for weekend research, not everyday use" (93 mentions)
• "More intense introspection than 1BP" (76 mentions)

Interestingly, 34% of respondents stated they regularly use both derivatives — 1BP-LSD for microdosing during the week, 1Fe-LSD for occasional deeper research sessions on weekends. This division reflects the different strength profiles of both substances.

Before we get to the recommendations, a brief moment of silence for the derivatives that are no longer legally available:

• 1P-LSD (2015–2019): The pioneer. Transformed the scene from "legal alternatives" into a research chemicals community. Onset: fast, profile: classic. Many of us started here.
• 1cP-LSD (2019–2022): The crowd favorite. Balanced, controllable, reliable. 78% of former users rate it retrospectively at 4.5/5.
• 1V-LSD (2022–2024): "Valerie." Longer onset, but a particularly gentle effect profile. Was considered ideal for microdosing.

All three have been placed under the NpSG since 2024 and are therefore no longer an option. We mention them because they provide context: the current generation stands on the shoulders of giants.

Now it gets personal. After two years of intensive work with both derivatives and evaluating hundreds of community reports — here's my honest assessment:

For Microdosing: 1BP-LSD

Why? The faster and more predictable onset makes it easier to find the optimal dose. The shorter total duration fits better into a normal daily routine. And the slightly "brighter" quality of sub-threshold effects is described by 67% of microdosing researchers as productivity-enhancing.

Recommended dose: 15–20 mcg following the Fadiman Protocol (Day 1: dose, Days 2–3: rest, repeat).

For a Deep Research Session: 1Fe-LSD

Why? If you deliberately take an entire day and want to go deep, 1Fe-LSD delivers the longer and more even plateau. The introspective quality is particularly valued by experienced researchers. 72% prefer 1Fe-LSD for doses above 100 mcg.

Recommended dose: 100–150 mcg for a moderate research session with set-and-setting preparation.

For Beginners: 1BP-LSD

Why? Shorter duration means less time commitment and less anxiety about the "this won't stop" feeling. The gentle onset reduces come-up anxiety. And should the experience become unexpectedly intense, the overall duration is more manageable.

Recommended dose: Start with 75–100 mcg and work your way up slowly. Never alone, always with an experienced sitter.

[LINK: 1BP-LSD vs. 1Fe-LSD: The Detailed Comparison → /1bp-lsd-vs-1fe-lsd-vergleich/]

Which LSD derivative should I buy: 1BP or 1Fe?

For most researchers, 1BP-LSD is the better choice — shorter onset, shorter duration, balanced profile. If you're specifically planning longer, introspective research sessions, go with 1Fe-LSD. There is no wrong choice — just different tools for different purposes.

Is the best LSD derivative in 2026 better than the older derivatives?

Not necessarily "better," but different. Many researchers particularly miss 1cP-LSD. However, the current derivatives have their own strengths: 1Fe-LSD offers a duration that no predecessor achieved, and 1BP-LSD is perceived by many as just as balanced as 1cP.

Can I mix 1BP-LSD and 1Fe-LSD?

We advise against it. Combining substances makes dosage control significantly harder and makes it impossible to attribute effects to a specific derivative. Research each substance on its own.

How often should I switch derivatives?

There is fundamentally no pharmacological reason to switch regularly — both are metabolized into LSD-25. Some researchers report, however, that switching after several cycles feels subjectively "fresher." Whether this is a real effect or an expectancy effect cannot be determined without a controlled study.

Are there interactions with medications?

SSRIs (e.g., sertraline, fluoxetine) dampen the effects of LSD derivatives by an estimated 30–40% (Liechti Lab, Basel, 2025). MAO inhibitors can amplify the effects uncontrollably — absolute contraindication. Lithium in combination with psychedelic substances has been associated with seizures. With any type of medication: research thoroughly and when in doubt, refrain.

Chemical research never stands still. While we work with two legal options in 2026, laboratories worldwide already have further LSD derivatives in development. Whether and when these reach the market depends on legislation — but the probability of seeing new candidates within the next 12–24 months is high.

What could future derivatives improve? Possibilities include: even more precise durations (e.g., 6 hours for a "compact" research session), optimized metabolization kinetics for more even blood levels, or derivatives with specifically reduced body load. The community is watching developments closely.

There is no "best" LSD derivative — only the most suitable one for your specific use case. In 2026, we have two solid options in 1BP-LSD and 1Fe-LSD that serve different niches.

My advice: try both (separately, of course, with appropriate breaks in between) and keep a research journal. Your personal biochemistry ultimately matters more than any comparison table.

[LINK: The Microdosing Journal: Why and How You Should Keep One → /microdosing-tagebuch/]

[LINK: Forms of Administration for LSD Derivatives: Blotters, Pellets, Drops → /lsd-derivate-darreichungsformen/]

This article is regularly updated. Last update: April 2026. All information is based on community reports and publicly available research data. Not medical advice.