Brick Weed Pros and Cons: Is Cheap Pressed Cannabis Worth It?

Brick weed, the compressed cannabis sold in tight blocks across South America, has exactly two things going for it: it's cheap and it's easy to find. The cons are much heavier: it's low-grade, often old and contaminated, and reports describe it being cut with everything from ammonia to petroleum products, which means real risks for your lungs and your head. Known in Argentina as “paraguayo” or “ladrillo” (brick), it's made in a completely different way from quality cannabis, and that shapes what's in it and how it hits.

Smoking brick weed has a couple of upsides, like the low price and easy access, but also some serious downsides that can affect both your experience and your health. So let's break down the main pros and cons of brick weed, so you can make an informed decision before you smoke it.

What is a brick weed joint, and what are the risks?

A brick weed joint, also called a “porro prensado,” “pito” or “prensado paraguayo” in Argentina, is a form of adulterated cannabis known for being cheap and popular on the black market. Unlike cannabis that's grown and processed under controlled conditions, compressed weed often contains a small amount of actual cannabis mixed with other stuff that makes it cheaper and easier to get, but also riskier for your health.

It can only really be smoked. It doesn't lend itself to the other ways you can use clean flower, like teas, edibles or medicinal preparations.

Brick weed is notorious for including a whole range of “ingredients,” from toxic substances to additives meant to boost its psychoactive punch. Paraguayan brick, named for where it usually comes from, crosses borders all over Latin America, and traffickers reportedly add chemicals to help it slip past border checks.

That means by the time it reaches the end user, it may have been handled with hydrocarbons, tar and other substances, reportedly even feces, ammonia and bitumen, which makes it a high-risk product.

Toxic contaminants found in brick weed

This kind of compressed weed, sold dirt cheap, can contain highly toxic ingredients that are harmful to your body. Contaminants commonly reported in brick weed include:

• Feces (human or animal): reportedly used to add weight and bulk.
• Neoprene glue and tar: found in adhesives and commercial cigarettes, raising the risk of lung damage.
• Ammonia and bitumen: reportedly added to intensify the effect.
• Hydrocarbons and petroleum derivatives: reportedly used to boost psychoactive potency, even though they have nothing to do with the cannabis plant.

On top of that, in some extreme cases brick weed has been said to contain small amounts of cocaine, coca paste (paco) or even dog food, which puts the final product a long way from pure, natural cannabis.

The health risks of Paraguayan brick weed

Smoking brick weed can expose you to a range of health risks because of all those extra ingredients. Some of the most serious include:

• Respiratory problems: from the tar and other chemicals you inhale when you smoke it.
• Toxicity: toxic substances like ammonia and bitumen raise the risk of serious poisoning.
• Infections and illness: feces and other contaminants raise the odds of infection, especially for regular smokers.
• Unpredictable effects: hydrocarbons and other agents can push potency up in an uncontrolled way, causing dangerous and hard-to-predict psychoactive effects.

Safer alternatives to brick weed

Unlike brick weed, cannabis grown under controlled conditions lets you know exactly what's in what you're smoking and how good it is. By growing your own or buying from safe sources, you can sidestep these risks and go for a healthier, more responsible way to consume.

Physical and psychological harm from brick weed

Brick weed may be popular because it's cheap and easy to get, but it carries serious risks to your physical and mental health because of the toxic substances and chemical agents in it. On top of the usual effects of cannabis, adding things like petroleum, tar and ammonia turns it into a highly dangerous mix.

Airway irritation and damage

Burning brick weed releases toxic agents that irritate and damage your airways when inhaled. León Goity, who holds a doctorate in pharmaceutical sciences and teaches at Diego Portales University in Chile, explains that any combustion product irritates the respiratory system and is potentially carcinogenic.

With brick weed, hydrocarbons like petroleum and tar raise that risk by releasing benzene and other highly toxic substances that affect the lungs. The respiratory effects are similar to those of commercial cigarettes, but at higher doses and with damage that builds faster every time you smoke.

Effects on the nervous system and addiction risk

One of the most worrying things about brick weed is how it may affect the central nervous system. Goity notes that its depressant and neurodegenerative effects come largely from volatile compounds derived from petroleum and neoprene, especially if they contain toluene, a substance that builds up in the body when inhaled and can damage vital organs like the liver and heart.

According to Goity, these effects can also raise the risk of addiction because of cumulative damage to the brain's reward circuits, making the user dependent on the substance.

Cognitive damage and mental decline

Christian Arévalo, a psychiatrist who teaches at Diego Portales University, says frequent use of brick weed can cause significant cognitive decline. Repeated exposure to the solvents and glues common in compressed weed causes brain toxicity that affects memory, attention and concentration.

Arévalo adds that the tar in brick weed raises the risk of lung cancer and other serious respiratory problems.

Risks for teens and mental health conditions

Brick weed is especially risky for teenagers, because the brain at that age is more vulnerable to psychoactive substances. Dr. Arévalo stresses that early use of drugs like brick weed can trigger a predisposition to mental health conditions such as schizophrenia or depression, especially in young people with a family history or genetic predisposition. Using at that age also makes the brain's reward circuits more sensitive, raising the odds of developing an addiction later on.