Jordan Mercer
Harm Reduction Writer
Jordan Mercer is a harm reduction writer covering rave and festival drug safety. The work focuses on psychedelics, stimulants, dissociatives, and the adulterants that turn up in all of them. Articles are grounded in clinical research and written for people who want straight information, not lectures.
Articles by Jordan Mercer
How to Read a Marquis Reagent Test Result
What each Marquis reagent color means: MDMA turns purple to black, meth and amphetamine turn orange. A full color chart and how to avoid misreads.
June 10, 2026How to Test Cocaine for Fentanyl and Cuts
Testing cocaine with reagents and fentanyl strips catches the deadliest risk first: fentanyl contamination. Step-by-step method, water ratios, and limits.
June 10, 2026Should You Test LSD? The NBOMe Risk Explained
Yes, you should test LSD. Blotter sold as acid is sometimes NBOMe, which can be lethal. How an Ehrlich reagent kit catches it, and what it can't tell you.
June 10, 2026Can GHB Cause Seizures? Withdrawal and Overdose
Yes, GHB can cause seizures, most dangerously during withdrawal. Here's why it happens, the overdose link, and what to do if someone seizes.
June 4, 2026Mixing Cocaine and MDMA: The Cardiovascular Risk
Combining cocaine and MDMA stacks two stimulants, multiplying heart strain and overheating risk. Here's the mechanism and how to reduce the danger.
June 4, 2026Does Ketamine Cause Brain Damage or Memory Loss?
Does ketamine cause brain damage? Occasional and therapeutic use shows little lasting harm; frequent heavy use is linked to real memory loss.
June 4, 2026Does LSD Stay in Your Spine? Myth vs Science
No, LSD does not stay in your spine, spinal fluid, or fat. Here is what pharmacokinetic studies actually show about how long LSD stays in your body.
June 4, 2026How Long Does MDMA Stay in Your System?
MDMA is usually detectable in urine for 1–3 days, blood 1–2 days, saliva 1–2 days, and hair up to 90 days. Detection windows by test type, explained.
June 4, 2026Is Microdosing Safe Long-Term? The Heart-Valve Risk
Is microdosing safe long term? Short-term it looks low-risk. The main theoretical concern is heart-valve damage from cumulative 5-HT2B exposure.
June 4, 2026Weed and Psychedelics: Does Cannabis Help or Hurt?
Cannabis can either calm a trip or tip it into overwhelming anxiety. Here's what the evidence shows about mixing weed with LSD or mushrooms, and timing.
June 4, 2026Is One Loud Night Enough to Cause Permanent Hearing Loss?
Yes, a single loud rave can cause permanent hearing damage. Here's how fast it happens at concert volumes, why ringing matters, and what actually protects you.
June 1, 2026Do Earplugs Ruin the Music at Raves? The High-Fidelity Myth
No, good earplugs don't ruin the music. Cheap foam muffles sound, but high-fidelity earplugs lower the volume evenly so the music stays clear.
June 1, 2026Do Your Ears Toughen Up to Loud Music? Why It's a Warning Sign
No, your ears don't toughen up to loud music. When a rave starts sounding quieter or more comfortable, that's temporary hearing damage, not adaptation.
June 1, 2026GHB vs GBL: What Is the Difference?
GBL is a prodrug that turns into GHB in your body, but it's stronger by volume and hits faster. Here's how they differ and why GBL is easier to overdose on.
May 31, 2026What Is Levamisole in Cocaine, and Should You Be Worried?
Most US cocaine contains levamisole, a veterinary dewormer that can destroy your white blood cells. Here's the real risk, the warning signs, and what to do.
May 31, 2026LSD and Lithium: Why This Combination Causes Seizures
Mixing LSD and lithium can trigger seizures. Here's what the data shows, why it happens, and why this is one psychedelic interaction to take seriously.
May 31, 2026MDMA Jaw Clenching and Magnesium: Evidence Review
Does magnesium reduce MDMA jaw clenching? An evidence review of the mechanism, study quality, best form (glycinate vs oxide), and dosing.
May 29, 2026Cocaine Harm Reduction: Heart Risks, Levamisole, and Nasal Care
Cocaine's cardiac risks can strike on the first use, and most US supply contains levamisole. What the evidence shows and how to reduce harm.
May 28, 2026GHB Withdrawal: Symptoms, Timeline, and Why You Need Medical Help
GHB and GBL withdrawal can cause seizures within hours of the last dose. The clinical timeline, the dangers, and why it needs hospital care.
May 28, 2026Serotonin Syndrome: How to Recognize It and What to Do
Serotonin syndrome causes muscle twitching, fever, and agitation, and can be fatal. How to spot it, which drug combinations cause it, and treatment.
May 28, 2026Drug Checking at Festivals: How It Works and Why It Matters
Drug checking services like The Loop and DanceSafe test substances on-site at festivals. What they detect, whether they change behavior, and how to find them.
May 27, 2026Nitrous Oxide and Nerve Damage: The B12 Risk Nobody Talks About
Whippets (nitrous oxide) can permanently damage your spinal cord and nerves by depleting vitamin B12. The mechanism, who's at risk, and early symptoms.
May 27, 2026Post-Festival Recovery: What's Happening in Your Body
The week after a multi-day festival is a real recovery period, not just being tired. The science of sleep debt, comedown, and what actually helps.
May 27, 2026MDA vs MDMA: What's the Difference Between Sally and Molly?
MDA (Sally) vs MDMA (Molly): longer-lasting, more psychedelic, and more neurotoxic in animal studies. How Simon's reagent tells them apart.
May 20, 2026Festival Heat and Hydration: How to Avoid Overheating
Overheating is the leading cause of acute MDMA deaths. Here's the hydration guide, cooling strategies, and gear that actually helps at festivals.
May 19, 2026Ketamine Vapes: What's Actually in Them and the Risks
Ketamine vapes rarely contain real ketamine. Here's what's more likely inside, the risks of novel dissociatives, and how to protect yourself.
May 19, 2026MDMA and Green Tea Extract (EGCG): Help or Harm?
EGCG appears in MDMA supplement stacks, but the evidence for benefit is weak and preclinical. Here's the actual pharmacology of EGCG, MAO inhibition, and MDMA.
May 19, 2026How to Dose GHB Safely: The 1mL Rule and Why Redosing Kills
GHB dosing is dangerous because concentration varies between batches. What the 1mL rule means, how to measure, and why redosing kills.
May 18, 2026Hippie Flip (MDMA + Psilocybin): Risks, Timing, and Safety
A hippie flip combines MDMA and psilocybin mushrooms. Here's the timing rationale, the real serotonin syndrome risk, dosing ceilings, and how to reduce harm.
May 18, 2026Microdosing Psilocybin for Depression: What Research Shows
Microdosing psilocybin is popular, but the evidence is weaker than most people realize. Here's an honest look at what the research actually shows.
May 18, 2026Ecstasy vs Molly: What's Actually in Pressed Pills
Ecstasy is pressed tablets, molly is powder, and neither guarantees purity. What drug checking finds in both, and how to test before you use.
May 15, 2026How Long Does a Molly High Last? Full MDMA Timeline
How long does molly last? Main effects run 3–5 hours, peak at 60–90 min. Full onset-to-comedown timeline and what affects duration.
May 15, 2026Ketamine and Alcohol: Why Mixing Ket and Alcohol Is Dangerous
Ketamine and alcohol both block NMDA receptors. Combined, they produce synergistic CNS depression and a much lower k-hole threshold. Here's the pharmacology.
May 15, 2026How Long to Wait Between MDMA Uses? The 3-Month Rule
Harm reduction guidance on how long to wait between MDMA (molly/ecstasy) uses. The 3-month rule, what it's based on, and signs you're using too often.
May 15, 2026Cocaethylene: The Third Drug from Mixing Cocaine and Alcohol
Cocaethylene forms when you mix cocaine and alcohol: it's more cardiotoxic than cocaine alone and lasts longer. What it is and why it matters.
May 14, 2026GHB and Alcohol: Why This Combination Kills
Mixing GHB (G, liquid G) and alcohol is one of the most dangerous rave combinations. Here's the pharmacology, the real overdose risk, and how to stay alive.
May 14, 2026How to Sleep After a Rave: Is Taking Xanax Safe?
Can't sleep after rolling or a rave? Here's what's actually happening in your brain, what helps, and whether taking Xanax or a benzo to sleep is safe.
May 14, 2026MDMA Dosage Guide: What Is a Safe Dose of Molly or Ecstasy?
How much molly is a safe dose? Evidence-based MDMA dosage guide: clinical trial doses, body weight rules, redosing rules, and the pressed pill problem.
May 14, 2026Poppers and Viagra (or Cialis): Why This Combination Can Be Fatal
Combining poppers with Viagra, Cialis, or any PDE5 inhibitor can cause life-threatening hypotension. Here's the pharmacology and what to do instead.
May 14, 2026How Long Does LSD Last? A Complete Timeline of the Trip
LSD (acid) lasts 8–12 hours depending on dose. The full timeline from first alert to afterglow, backed by clinical pharmacokinetics data.
May 13, 2026How to Test Your MDMA: A Complete Drug Checking Guide
Testing molly (MDMA/ecstasy) with reagent kits and fentanyl strips can prevent overdose and adulterant exposure. Here's exactly how to do it, step by step.
May 13, 2026Ketamine Bladder Damage: What K-Cramps Actually Mean
Ketamine (K, special K) bladder damage causes severe pain and can lead to permanent organ loss. Learn the symptoms, mechanism, and how to protect yourself.
May 13, 2026Mixing MDMA and Alcohol: What Actually Happens
Mixing molly (MDMA/ecstasy) and alcohol significantly raises hyperthermia risk. Here's the mechanism, the specific dangers, and what to do instead.
May 13, 2026How to Avoid a Bad Trip on Shrooms: Set, Setting, and Dosing
How to avoid bad trips on psilocybin or LSD: the set, setting, and dosing checklist, plus what to do when a difficult experience starts anyway.
May 13, 20262C-B vs. Tusi (Pink Cocaine): They Are Not the Same Drug
Tusi and 2C-B are not the same drug. Lab testing shows pink cocaine usually contains MDMA and ketamine, with very different risks than actual 2C-B.
May 12, 2026Candy Flip (MDMA + LSD): Risks, Timing, and How to Do It Safer
A candy flip combines MDMA and LSD for a 12–18 hour experience. Here's the timing rationale, the real risks, and practical harm reduction for both substances.
May 12, 2026Harm Reduction at Festivals: A Practical Pre-Event Checklist
What to bring, what to test, and what to know before a rave or festival. Covers drug checking, heat management, hearing protection, and emergency prep.
May 12, 2026How to Stop a Bad Trip: What Actually Works
To stop a bad trip: change environment and music first, then diazepam 10–20 mg if needed. What works, what doesn't, and when to call 911.
May 12, 2026How to Use Fentanyl Test Strips: A Step-by-Step Guide
Step-by-step fentanyl test strip instructions, water ratios by substance, how to read results, false positives, and what to do if you test positive.
May 12, 2026Is Ketamine Addictive? K-Cramps, Bladder Damage, and Dependence
Is ketamine (K, special K) addictive? Yes. Psychological dependence is common in heavy users, bladder damage is real, and it's irreversible at advanced stages.
May 12, 2026The MDMA Comedown: Why It Happens and How to Reduce It
Molly (MDMA) comedown depression ('Blue Tuesday') comes from serotonin depletion. The mechanism, timeline, and what actually helps recovery.
May 12, 2026MDMA Neurotoxicity: Does Molly Cause Brain Damage?
MDMA neurotoxicity is real but highly dose-dependent. What the research shows, why heavy-user studies don't apply to most people, and what cuts risk.
May 12, 2026MDMA and Antidepressants (SSRIs/SNRIs): What Actually Happens?
Can you take molly (MDMA/ecstasy) on antidepressants? SSRIs blunt the roll, SNRIs raise cardiac risk, and MAOIs are life-threatening. Here's the evidence.
May 12, 2026MDMA Supplements Protocol: Pre-Loading and Post-Loading Guide
Molly/MDMA (ecstasy) supplements protocol: what R-ALA, magnesium, Vitamin C, and 5-HTP actually do, when to take them, and what the research supports.
May 12, 2026