Methaqualone

Summary sheet: Methaqualone

Methaqualone
Chemical Nomenclature
Common names	Methaqualone, Quaaludes, "Ludes", Mandrax, Sopor
Substitutive name	Methaqualone
Systematic name	2-Methyl-3-(2-methylphenyl)-4(3H)-quinazolinone
Class Membership
Psychoactive class	Depressant
Chemical class	GABAergic
Routes of Administration
WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section. Smoked Dosage Threshold 50 mg Light 50 - 100 mg Common 100 - 200 mg Strong 200 - 300 mg Heavy 300 mg + Duration Total 1 - 2 hours Oral Dosage Threshold 75 - 150 mg Light 150 - 300 mg Common 300 - 500 mg Strong 500 - 600 mg Heavy 600 mg + Duration Total 5 - 8 hours Onset 30 minutes Come up 30 minutes Peak 2 - 4 hours Offset 2 - 4 hours After effects 6 - 8 hours DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.

Methaqualone (brand name Quaalude in the US and Mandrax in the UK) is a central nervous system (CNS) depressant of the quinazolinone class that acts as a sedative and hypnotic. The sedative–hypnotic activity of methaqualone was first noted by researchers in the 1950s and in 1962 methaqualone itself was patented in the US by Wallace and Tiernan.^[2] Its use peaked in the early 1970s as a hypnotic, for the treatment of insomnia, and as a sedative and muscle relaxant. It is still produced and used clandestinely as a recreational drug throughout the world. The drug was popular in the 1970s with hippies and in the disco club scene.

Chemistry

Methaqualone, or 2-methyl-3-(2-methylphenyl)-4(3H)-quinazolinone, is a compound of the quinazolinone class. Quinazolinone is a bicyclic structure containing a phenyl ring bound to another six-membered ring with two nitrogen members and a ketone group bound to R₄. In methaqualone, this structure is substituted at R₂ with a methyl group. Additionally, methaqualone contains a phenyl ring with a methyl group bound to R₂ which is attached to the quinazolinone structure at R₃.

Pharmacology

Despite prior speculation, a 2015 study demonstrates that methaqualone exhibits distinct functional properties at the GABA receptor sites compared with other allosteric modulators, and it mediates these through a different mechanism than the barbiturates and benzodiazepines that it historically has been lumped together with.^[3]

These distinctions could contribute to the reported differences in the in vivo effects induced by methaqualone and classic CNS depressants. In any case, the multifaceted functionality of methaqualone at GABA A receptors seems to be at the root of its clinical efficacy, as well as the addiction liability and recreational use associated with the drug.^[3]

It could be speculated that despite differences in targeted receptors, methaqualone essentially produces a variety of effects by binding to its receptor sites and magnifying the efficiency and effects of the neurotransmitter gamma aminobutyric acid (GABA) by acting on its receptors. As this site is the most prolific inhibitory receptor set within the brain, its modulation would explain the resulting sedating or calming effects which ensue.

Subjective effects

The effects listed below are based upon the subjective effects index and personal experiences of PsychonautWiki contributors. These effects should be taken with a grain of salt and will rarely (if ever) occur all at once, but heavier doses will increase the chances of inducing a full range of effects. Likewise, adverse effects become much more likely on higher doses and may include serious injury or death.

Experience reports

There are currently no anecdotal reports which describe the effects of this compound within our experience index. Additional experience reports can be found here:

• Erowid Experience Vaults: Methaqualone

Toxicity and harm potential

Independent research should always be done to ensure that a combination of two or more substances is safe before consumption.

Overdose of methaqualone can lead to seizures, coma or death. Taking doses of over 300mg can be dangerous for first time users. Depending on the state of the user's individual tolerance, doses of about 8,000mg per day can be fatal whilst others on even higher doses (of up to 20,000mg) may survive.

Although the exact lethal dosage of methaqualone has not been formally established, like many depressants, it is safe at appropriate dosages. Complications may arise when administered in excess or in combination with other depressants.

It is strongly recommended that one use harm reduction practices when using this substance.

Tolerance and addiction potential

Methaqualone is extremely addictive. Tolerance to the sedative-hypnotic effects develops within a couple of days of repeated administration. After that, it takes about 3 - 7 days for the tolerance to be reduced to half and 1 - 2 weeks to be back at baseline (in the absence of further consumption). Methaqualone presents cross-tolerance with all gabaergic depressants, meaning that after the consumption of methaqualone all compounds of the same class will have a reduced effect.

Abrupt discontinuation of methaqualone following regular dosing over several days can result in a withdrawal phase which includes rebound symptoms such as increased anxiety and insomnia. It is possible to gradually reduce the dose over the course of several days, which will lengthen the duration of the withdrawal period but reduce the perceived intensity.

Dangerous interactions

Although many psychoactive substances are reasonably safe to use on their own, they can quickly become dangerous or even life-threatening when taken with other substances. The following lists some known dangerous combinations, but cannot be guaranteed to include all of them. Independent research should always be conducted to ensure that a combination of two or more substances is safe to consume. Some interactions listed have been sourced from Tripsit.

• Depressants (1,4-Butanediol, 2M2B, alcohol, benzodiazepines, barbiturates, GHB/GBL, methaqualone, opioids) - This combination potentiates the muscle relaxation, amnesia, sedation, and respiratory depression caused by one another. At higher doses, it can lead to a sudden, unexpected loss of consciousness along with a dangerous amount of depressed respiration. There is also an increased risk of suffocating on one's vomit while unconscious. If nausea or vomiting occurs before a loss of consciousness, users should attempt to fall asleep in the recovery position or have a friend move them into it.

• Stimulants - It can be dangerous to combine depressants with stimulants due to the risk of accidental excessive intoxication. Stimulants mask the sedative effect of depressants, which is the main factor most people use to gauge their level of intoxication. Once the stimulant effects wear off, the effects of the depressant will significantly increase, leading to intensified disinhibition, motor control loss, and dangerous black-out states. This combination can also potentially result in severe dehydration if one's fluid intake is not closely monitored. If choosing to combine these substances, one should strictly limit themselves to a pre-set schedule of dosing only a certain amount per hour until a maximum threshold has been reached.

• Dissociatives - This combination can unpredictably potentiate the amnesia, sedation, motor control loss and delusions that can be caused by each other. It may also result in a sudden loss of consciousness accompanied by a dangerous degree of respiratory depression. If nausea or vomiting occurs before consciousness is lost, users should attempt to fall asleep in the recovery position or have a friend move them into it.

Legal status

• Australia - Methaqualone is Schedule 9 in Australia, meaning it is illegal without a license and deemed to have no medical value.
• Austria - Methaqualone is illegal to possess, produce and sell under the SMG (Suchtmittelgesetz Österreich).
• Canada - Methaqualone is Schedule III in Canada, meaning it requires a prescription or license to legally possess.
• Germany: Methaqualone is controlled under BtMG Anlage II, making it illegal to manufacture, import, possess, sell, or transfer it without a license.^[4]
• United Kingdom - Methaqualone is a Class B drug.
• United States - Methaqualone is a Schedule I drug, and is illegal to possess without a license.^[5]

See also

• Responsible use
• Depressants
• Mebroqualone
• GHB

External links

• Methaqualone (Wikipedia)
• Methaqualone (Erowid Vault)
• Methaqualone (Isomer Design)
• Quaaludes (Drugs.com)

References