http://onlinelibrary.wil....1963.tb12816.x/abstractQuote:AMPHETAMINE-LIKE ACTIVITY OF β-PHENETHYLAMINE AFTER A MONOAMINE OXIDASE INHIBITOR IN VIVO
β-Phenethylamine possesses marked amphetamine-like effects which are demonstrable in animals pre-treated with a monoamine oxidase inhibitor. Like amphetamine, β-phenethylamine induces an increase of coordinated spontaneous motility in mice, anorexia in rats and dogs, hyperthermia in mice and rats, and exhibits a difference in lethality between isolated and aggregated mice. These effects are seen with similar doses of β-phenethylamine or amphetamine. But, unlike amphetamine, β-phenethylamine does not increase coordinated spontaneous motility in rats.
for the beta PEA:
https://www.spectrumchem...l.com/MSDS/TCI-P0086.pdfQuote:Mouse LD50 (oral) 400mg/kg
for the alpha PEA:
https://www.spectrumchem...l.com/MSDS/TCI-P0794.pdfQuote:Rat LD50 (oral) 940mg/kg
Consider that the LD50 for mice of betaPEA was 400mg per kg... and the LD50 for rats was twice that for the alphaPEA.
Now humans are not mice and rats, however the indication is that PEA is not particularly toxic.
The human equivalent doses of these LD doses is interesting to consider:
in a 60kg human (130lbs or so) the ld50 for beta dose is about 24grams...
in the same person the ld50 dose for the alpha is about 56 grams...
now let us briefly compare that to mescaline:
http://www.erowid.org/ch...scaline_datasheet1.shtmlfor mice the LD50 of oral mescaline is 880 mg/kg, if we can compare that to the betaPEA then we can claim that the PEA is about twice as toxic as mescaline, which is hardly toxic at all.
So hmm, twice as toxic as mescaline? Sound bad right?
Lets compare that to Caffeine:
LD50 mouse oral 185 mg/kg... consider that according to the data caffeine is 4 times more toxic than mescaline and 2 times more toxic than beta-PEA.
And here is what is bothering me:
Quote: 7 grams I can not believe you are not dead.
I am going to assume that MMPA weighs more than 100lbs, so that is 45kg. A dose which kills half of the mice* is (for beta) 18 grams in terms of a 100lb adult. 7 grams does seem like a hefty dose, but seems unlikely to be lethal or even potentially so.
http://www.erowid.org/li...e/pihkal/pihkal142.shtmlQuote:
DOSAGE: greater than 1600 mg.
DURATION: unknown.
QUALITATIVE COMMENTS: (with 200, 400, 800 and 1600 mg) No effects.
Seizures with 2g verses zero effects with 1600mg?hmmm
http://www.ncbi.nlm.nih.gov/pubmed/6141619Quote:.
Pharmacology of beta-phenylethylamine-induced seizures in mice.
The endogenous trace amine beta-phenylethylamine (PE) produced tonic-clonic seizures in male Swiss mice when administered in doses of 125-200 mg/kg. The number of mice exhibiting PE-induced seizures, the latency to onset of first seizure and the latency to loss of the righting reflex were dose dependent. Pretreatment with the benzodiazepines diazepam, chlordiazepoxide, midazolam and clonazepam significantly reduced the incidence of PE-induced seizures. Similarly, increasing brain gamma-aminobutyric acid (GABA) levels by injection of the GABA-transaminase inhibitors aminooxyacetic acid or gabaculine afforded significant protection against PEA's convulsant effects. The data suggest that PE when administered at high doses may interfere either directly or indirectly with GABAergic neurotransmission in the central nervous system. In addition, since PE induces an epileptiform spiking pattern and produces seizures in rodents it appears possible that the amine may play a role in some forms of human epilepsy
So a dose of 125-200mg/kg beta PEA caused seizures in mice...
that is about 5-9 grams in a 45kg/100lb adult, 7 grams does fall into that range
but wait, there's more!
Caffeine and alcohol were involved in the seizure... caffeine decreases GABA. This makes seizure far more likely and Caffeine is known as a trigger for seizures because of this.
Alcohol also affects GABA systems...
Taking caffeine and PEA together does seem capable of resulting in a seizure according to the DATA, alcohol seems to have been a factor as well in the case Heretic relates.
While I disagree that 7 grams of PEA seems like a lethal dose, it does seem potentially dangerous in terms of seizures and may have severe consequences in combination with other drugs that affect the GABA system.
PEA is a lot like amphetamine, which also has a risk of seizure at upper dose levels. It also reminds me of the Amphetamine analog Bupropion, also known to cause (dose dependent) seizures.
PEA is interesting and not particularly toxic but is potentially dangerous. MMPA, if you insist upon continuing to experiment with large doses of PEA, could you please instruct someone you know and trust to post in this thread if this experimentation kills you or hospitalizes you?
I worry that if that happened this thread would not reflect that and we would not have the whole story.
*MMPA did not specific which PEA he used... beta or alpha?