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Benzos Clobromazolam / Phenazolam Megathread

deficiT

Bluelight Crew
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Clobromazolam, AKA Phenazolam has appeared, seemingly as an alternative to bromazolam.

From Wikipedia:

Phenazolam, (Clobromazolam, DM-II-90, BRN 4550445) is a benzodiazepine derivative which acts as a potent sedative and hypnotic drug. It was first invented in the early 1980s, but was never developed for medical use. It has been sold over the internet as a designer drug, first being identified in seized samples by a laboratory in Sweden in March 2016.

Here is a rough dosing guide and write up posted on this Reddit thread that seems to be about the best information available currently -- Don't take this as gospel though, start small as possible anytime you take a new substance, regardless of your perceived tolerance to sedatives or anything else.

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My conclusions are as follows: ~0.25 mg/250 ug clobromazolam / phenazolam = 10 mg diazepam = 0.2 mg/200 ug clonazolam = 0.5 mg alprazolam. In other words, clobromazolam is 40x more potent than diazepam/Valium, twice as potent as alprazolam/Xanax, and only slightly less potent than clonazolam.

This conclusion has horrific implications: all the clobromazolam presses I’ve seen floating around have been dosed between 2-3 mg. Of course, these pills are manufactured in clandestine labs without regulations, so the actual dosage may vary quite a bit. However, if the presses contain even 2 mg of clobromazolam, that means a single pill is equivalent to 4 mg alprazolam or 80 mg diazepam. For reference, common doses of alprazolam and diazepam, by Psychonaut Wiki’s standards, are 0.5-1.5 mg and 5-15 mg, respectively. For almost everyone on Earth, this is a ridiculously high dosage. It is incredibly irresponsible that presses are being dosed this high. Most people would assume a single pill is a perfectly normal dose: in this case, it is at least 3 times, and up to 16 times, more than a common dose. One, or even half of these presses could easily cause a blackout or, depending on what’s in your system or where you are, kill you. There is also the even more possibility that some presses are MORE potent than advertised – which is indescribably terrifying.

Crucially, the onset time is 1 hour-1.5 hours; the total duration is between 8-14 hours (average: ~11 hours). I repeat: it takes an hour or more to fully feel the effects. Combined with its ridiculous potency, this is what makes clobromazolam so dangerous. Since it takes so long to kick in, people are very likely to re-dose before they even feel the effects of the first dose – and bear in mind, clobromazolam is fourty times more potent than diazepam. With each re-dose, the likelihood of blackouts and overdoses skyrockets. While fatal overdoses from benzos alone are very rare, when combined with alcohol, opioids, barbiturates, etc., an overdose is both much more likely and exponentially more likely to kill you. For the love of God, do not mix clobromazolam with any other CNS depressants.

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Anecdotally, I have tried a bit of this now. I've had about 3 mgs over the last 24 hours or so. I'm not particularly intoxicated, but they're definitely a good feeling. Like the other guy said, they seem to be a longer lasting type of benzo, that takes a while to fully kick in. I have just been taking doses of .5mg.

Benzos are sort of unremarkable and hard to describe for me, but it feels a little bit more lucid and less physically sedating than bromazolam. But idk, yesterday when i first took it was coming down from an ecstasy roll, and today I've had some amphetamine, thc, cbd, and kratom as well.

I'll definitely update further as I get to know the substance, but there didn't seem to be a lot of info on this so I wanted to make a thread for it

- @deficiT 7/20/2025
 
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Apparently this one is around now...

How is it?

If it's anything like phenazpam I'd stay well away... EADD is full of terrible train wreck stories from that one when it was popular in the UK 3 or 4 years ago...

Awful stuff, made you feel sober but totally lost the plot..zero inhibitions and people ruined their lives on it
 
Clobromazolam-structure.png


We've had flubromazolam, flualprazolam, clonazolam and flunitrazolam. All very potent benzos, that were generally well received. So why has no one released phenazolam?
 
its ridiculously strong. it should be dosed like clonazolam yet the bars are advertised 3mg. a quarter fucked me up bad enough to cause some trouble and I have a 6mg+ flubrotiz* tolerance/daily, was taking a few mg fPam and 1mg or two or diclaz along with it.

*fuck flubrotiz compared to fluclotiz- personally) way too many/long of active metabolites, unpredictable and just personally, fluclo had way better skeletal relaxant effects and I have fake hips with pain that opiods including kratom make worse. and it has skyrocketed my tolerance. FluClotiz I kept a stable tolerance and was the best medicine since my shrink retired (14yrs on 2-8mg lorazepam, 2-6mg alpraz, and back to 8-4mg lorazepam over the last several years before I wound up moving for work and my shrink back home retired. I just recently went 6mo completely sober for treatment and straight up couldn't talk for a few mo, and shook the entire time, and my posture is awful without any.. I am probably a a lifer and am ok with that *

I'm assuming fluclotiz has less active metabolites just like clonazepam, while it does have a long half life, has almost no active metabolites. I put all of the pills into solution so as to avoid a counterfeit pill charge but am still afraid to experiment with it much. bromazolam eventually very much built up in my system and flubLam moreso. I don't know enough about pharmacokinetics to say whether the chlorine ring where its at would cause inactive metabolites, if anyone can help there.
I haven't taken clonazepam in 10yrs and remember being angry-not in withdrawal just upset that I didn't get any euphoria- when my tolerance was 2mg alpraz/day. I tried to buy the prodrug that circulated about a year ago from a certain source I recently got some fluclotiz from (and will absolutely not give it out for your safety), but if you're on the appropriate clearnet or deep forums for such discussion.. Needless to say I did not receive what I ordered, lol.
 
does anyone know enough about pharmacology to estimate half-lives/active metabs on this one?

clonazepam- aka clonitrazepam, while a longer half life has almost no actives
nitrazepam I know little about other than i loved flunitrazepam when it was around..
Nitrazolam obviously caused severe w/d with minimal use
Clonitrazolam aka Clonazolam did not appear to have many active metabolites either, based on how insanely fast and hard w/d would hit
Bromazolam on the other hand was gentle... i didnt have seizures until 3 wks after discontinuation and letting Jesus take the wheel on my bromaz and flubromaz habit , which i had insane tolerance for and took one final mega dose of both
Flubrotizolam is way more unpredictable, and i hate it complared to fluclotizolam which i kept on a stable dose. I can take a half mg flubrotiz sometimes and get sleepy, or sometimes i can take 8mg and decide to go drinking and feel completely sober just may be slurring a little. at 1mg or 8mg both , im liable to get wide awake and then sleep 10hrs. that never happened with fluclotiz.. i loved not being able to feel fluclotiz is my point. it is the closest to ativan ive had since I was Rx'd ativan. i have not taken clonazepam in close to 10 years and hated it for its subtletly, taking 5mg to MOSTLY stop the cravings of my then 2mg/day (rx'd) alpraz habit.
I cant feel the clobbering/phenazolam much aside from seemingly slowly daily build up (with several times daily dosing, which should be not necessary). but it helps my skeletal problems better than diclazepam, flubrotizolam, flubromazepam, and even fluclotiz.
I dont know enough about molecular chem to know if the chlorine is in a similar spot and therefore should be lessening the active metabolites, or if I should be even more careful than i am now.,

in any case, these chlorine ring benzos are in general more subtle and drastically more helpful for my skeletal and muscular pain than diclaz, fPam, flubrotiz.. i cant take opiods as they make them worse, and i prefer the legal cannabis script i can have instead. even kratom; something about the muscle relaxation caused by opiods makes my hurt hurt
 
  • bump
    clobromazolam is surely the best subtitute for people struggling with cLam withdrawal rebound. lasts much longer. is more potent by weight, more recreational at equivalent doses... and probably has a lot more active metabolites than clonazolam- aka clonitrazolam- aka clonitrazolam.
    clonazepam again, while having an estimated ~40hr half life and no active metabolites, surely, the triazole ring does not help with active metabs.
 
How is there such little information about Clobromazolam out there? A benzo with structural relation to Bromazolam and Clonazolam? Sounds interesting, but possibly overly sedating lol. I guess the only people taking this benzo are people unknowingly consuming it through pressed "Xanax"?
 
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I'm seein these available and the doses are very low dosed (0.5mg or 1mg). Vendor is very careful to emphasize that 0.5mg is perfect dose for people without insane tolerances. The effects seem to indicate sedative hypnotic effects. The vendor has no minimum to buy and now I'm intensely curious. Anyone tried them? Thanks.
 
I've seen some people on reddit claim it's experientially similar to clonazolam and bromazolam, with similarly low dosing, come-up times ~1-1.5 hour(s), somewhat sedative, and is apparently extremely clear headed and prone to delusions of sobriety. Phenazolam is one of those clonazolam-like benzos that would land a ton of people in blackout incidents if it lasted longer, but it seems like it was briefly on DNs and then just vanished in favor of fresh batches of bromazolam. I'm not sure why the market got flooded with 99% bromazolam and then 1% clobromazolam, and while bromazolam is similarly dangerous, it's not quite as hyperpotent at least.
 
Unpopular opinion: Am I the only person that thinks all benzodiazepines basically feel so similar in effect, any distinction outside of duration and onset of action basically meaningless?

I've tried bromazolam, flubromazolam, etizolam, diazepam, lorazepam, midazolam, oxazepam, nitrazepam, clonazepam, you name it. I honest to god, hand on a bible believe that I couldn't tell you the difference between any of them if it weren't for onset and duration of action and even that probably not.
 
Unpopular opinion: Am I the only person that thinks all benzodiazepines basically feel so similar in effect, any distinction outside of duration and onset of action basically meaningless?

I've tried bromazolam, flubromazolam, etizolam, diazepam, lorazepam, midazolam, oxazepam, nitrazepam, clonazepam, you name it. I honest to god, hand on a bible believe that I couldn't tell you the difference between any of them if it weren't for onset and duration of action and even that probably not.
I've met people who also claim all stimulants feel the same, all cannabinoids feel the same, all opioids feel identical, all benzos, the only class I haven't encountered that with as of yet is psychedelics. Nobody has told me that vaporized DMT, LSD, and mescaline feel the same yet. I can feel differences between almost every substance in the aforementioned classes of drugs though, personally.
 
I'm seein these available and the doses are very low dosed (0.5mg or 1mg). Vendor is very careful to emphasize that 0.5mg is perfect dose for people without insane tolerances. The effects seem to indicate sedative hypnotic effects. The vendor has no minimum to buy and now I'm intensely curious. Anyone tried them? Thanks.
Hey there,

I've tried Clobromazolam/Phenazolam, and I can give you some insights. These are very similar benzo, and they are quite potent. The doses are very low, typically around 0.5mg to 1mg. For someone without a high tolerance, 0.5mg is usually enough to feel the effects.

Dosage:
  • 0.5mg for beginners or those with low tolerance.
  • 1mg for those with a bit more experience or higher tolerance.
Effects:
  • Strong sedative and hypnotic effects.
  • You'll feel very relaxed and calm, with a significant reduction in anxiety.
  • It can make you quite drowsy, so it's best to take it when you don't need to be active.
Comparison Between Clobromazolam and Phenazolam:

  • Clobromazolam: Known for its strong sedative and hypnotic effects. It has a rapid onset and a long duration of action. It's highly potent and should be used with caution.
  • Phenazolam: Structurally similar to Clobromazolam, with similar effects. It is also highly potent and has strong sedative and hypnotic properties. The main difference lies in their chemical structure, but their effects are quite comparable.
Overall, Clobromazolam/Phenazolam is a powerful sedative-hypnotic benzo. It's great for short-term use to help with severe insomnia or anxiety, but be cautious with the dosage due to its potency.

Comparison to Other Benzos (I've tried to bind them together, because I find both of them quiet similar):
  • Alprazolam (Xanax): Clobromazolam/Phenazolam is stronger and more sedative. Alprazolam is more for anxiety and panic attacks, while Clobromazolam/Phenazolam is more for sedation.
  • Lorazepam (Ativan): Lorazepam is also strong, but Clobromazolam/Phenazolam has a more pronounced sedative effect. Lorazepam is better for anxiety and short-term use.
  • Oxazepam (Serax): Oxazepam is milder and has a slower onset. Clobromazolam/Phenazolam is much stronger and faster-acting.
  • Temazepam (Restoril): Temazepam is a strong hypnotic, but Clobromazolam/Phenazolam is even more potent. Temazepam is better for sleep maintenance.
  • Tetrazepam: Tetrazepam is more of a muscle relaxant with moderate sedative effects. Clobromazolam/Phenazolam is stronger in terms of sedation.
  • Methaqualone/Mephenaqualone (Quaaludes): These are very euphoric and sedative, more then Clobromazolam/Phenazolam and also with a higher addiction potential and more intense effects.
  • Diazepam (Valium): Clobromazolam/Phenazolam is much stronger and more sedative. Diazepam is more for anxiety and muscle relaxation, while Clobromazolam/Phenazolam is more for knocking you out.
  • Clonazepam (Klonopin): Clonazepam is also strong, but Clobromazolam/Phenazolam has a more pronounced sedative effect. Clonazepam is better for long-term anxiety control.
  • Rilmazafone: This one is a prodrug that converts to an active benzo in the body. It's milder compared to Clobromazolam/Phenazolam and has a shorter duration.
  • Flunitrazepam (Rohypnol): Flunitrazepam is very strong and has a notorious reputation. Clobromazolam/Phenazolam is similar in strength but doesn't have the same level of euphoria.
Overall, Clobromazolam/Phenazolam is a powerful sedative-hypnotic benzo. It's great for short-term use to help with severe insomnia or anxiety, but be cautious with the dosage due to its potency.

Stay Safe, Mana0909
 
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