💊 Drug Interactions Database

⚠️ Severe Risk: Seizures

NEVER combine psilocybin with lithium. Multiple documented cases of severe seizures, including grand mal seizures.

Known Effects

• Severe seizures (documented in multiple case reports)
• Unpredictable and potentially life-threatening reaction
• Mechanism not fully understood but well-documented

Recommendations

• DO NOT use psilocybin if taking lithium
• Consult psychiatrist before considering any psychedelics
• Alternative mood stabilizers may have different risk profiles

⚠️ Risk: Serotonin Syndrome

MAOIs prevent breakdown of serotonin. Combined with psilocybin (serotonergic), this can cause potentially fatal serotonin syndrome.

Serotonin Syndrome Symptoms

• Agitation, confusion, rapid heart rate
• High blood pressure, dilated pupils
• Loss of muscle coordination, muscle rigidity
• Heavy sweating, diarrhea, headache
• High fever (can be life-threatening)

MAOI Medications Include

• Phenelzine (Nardil)
• Tranylcypromine (Parnate)
• Isocarboxazid (Marplan)
• Selegiline (Emsam) - transdermal

Recommendations

• Wait minimum 2 weeks after stopping MAOI
• Consult prescribing physician
• MAOIs can stay in system for extended periods

⚠️ Risk: Serotonin Syndrome + Seizures

Tramadol has both opioid and SNRI properties. Combination with psilocybin significantly increases seizure risk and can cause serotonin syndrome.

Why It's Dangerous

• Tramadol inhibits serotonin reuptake (SNRI properties)
• Lowers seizure threshold significantly
• Combined serotonergic effects increase syndrome risk
• Multiple documented adverse reactions

Recommendations

• Avoid combining entirely
• If using tramadol regularly, skip psilocybin
• Alternative pain medications have lower risk profiles

⚠️ Risk: Cardiovascular Stress + Anxiety

Both substances increase heart rate and blood pressure. Combination significantly stresses cardiovascular system and often causes severe anxiety.

Known Effects

• Dramatically increased heart rate and blood pressure
• Heightened anxiety, paranoia, and panic attacks
• Risk of cardiovascular events (heart attack, stroke)
• Overwhelming and uncomfortable mental state
• Reduced psychedelic headspace, more physical stimulation

ADHD Medications

For prescribed ADHD stimulants:

• Skip dose on trip day (if medically safe to do so)
• Consult with prescribing physician first
• Consider trip on day off from medication
• Non-stimulant ADHD meds (Strattera) have lower risk

⚠️ Risk: Neurotoxicity + Overwhelming Experience

Combination increases neurotoxicity, causes excessive serotonin release, and produces unpredictable, often overwhelming experiences.

Known Risks

• Increased neurotoxicity from MDMA
• Excessive serotonin release (risk of syndrome)
• Severe dehydration and overheating
• Jaw clenching, muscle tension intensified
• Difficult comedown and integration
• Confusion and memory impairment

Why People Combine Them

Some users report euphoric experiences ("hippie flipping"), but risks outweigh benefits:

• Unpredictable interaction
• Higher risk of bad experience
• Compounds neurotoxic effects
• Harder on body and brain

Recommendations

• Strongly advised against combination
• If determined to combine: extensive harm reduction research required
• Hydration, electrolytes, temperature monitoring critical
• Trip sitter mandatory

⚠️ Effect: Significantly Reduced Experience

SSRIs greatly reduce or completely block psilocybin effects. Generally physically safe but produces weak or no psychedelic experience.

How It Works

• SSRIs desensitize 5-HT2A receptors (where psilocybin acts)
• Chronic SSRI use reduces receptor availability
• Typical result: 50-80% reduction in effects or complete blockade
• Higher doses don't necessarily compensate

Common SSRIs

• Fluoxetine (Prozac)
• Sertraline (Zoloft)
• Escitalopram (Lexapro)
• Paroxetine (Paxil)
• Citalopram (Celexa)
• Fluvoxamine (Luvox)

Recommendations

• DO NOT stop SSRIs without doctor guidance
• Stopping suddenly can cause withdrawal syndrome
• Taper takes weeks to months under supervision
• Even after stopping, receptor sensitivity takes time to return
• Wait 4-6 weeks after full discontinuation for normal effects
• Therapeutic use under medical supervision may proceed differently

⚠️ Effect: Unpredictable Intensification

Cannabis can dramatically intensify psilocybin effects in unpredictable ways. May increase anxiety and confusion.

Known Effects

• Can dramatically intensify visuals and mental effects
• May increase anxiety, paranoia, or confusion
• Effects highly individual and dose-dependent
• Can "kick up" a fading trip unexpectedly
• May impair memory and integration
• Can help with nausea but intensify headspace

User Experiences Vary

• Positive reports: Enhanced visuals, relaxation, reduced nausea
• Negative reports: Overwhelming anxiety, paranoia, thought loops
• Context matters: Setting, tolerance, strain, timing all affect outcome

Harm Reduction Guidelines

• If inexperienced with psychedelics: avoid combining
• If combining: use very small amounts
• Wait until peak or come-down (not on come-up)
• CBD-dominant strains may be gentler
• Have trip sitter if combining
• Be prepared for intensification

⚠️ Effect: Dulls Experience, Increases Nausea

Alcohol blunts psychedelic effects, impairs judgment, and significantly increases nausea and discomfort.

Why Avoid Combination

• Dulls and muddies the psychedelic experience
• Greatly increases nausea and risk of vomiting
• Impairs judgment and decision-making
• Reduces meaningful insights and integration
• Can cause severe dehydration
• May trigger difficult emotional states

Recommendations

• Avoid alcohol 24 hours before trip
• Stay sober during entire experience
• If drinking post-trip: wait until fully baseline (6+ hours)
• Hydrate with water instead
• Small amount of wine/beer after peak may be tolerable but not recommended

⚠️ Effect: Very Intense, Long Duration

Combination creates extremely intense, prolonged psychedelic experience. Synergistic effects are unpredictable.

Effects of Combination

• Dramatically increased intensity (not just additive)
• Extended duration (12+ hours typical)
• Very intense visuals and headspace
• High risk of overwhelming experience
• Difficulty with communication and grounding
• Enhanced potential for both positive and negative experiences

Who Should Consider

Only for very experienced psychedelic users who:

• Have extensive experience with both substances individually
• Have handled intense/difficult experiences before
• Have perfect set and setting arranged
• Have experienced trip sitter available entire time
• Are mentally prepared for 12+ hour journey

Harm Reduction

• Not recommended for beginners or intermediate users
• Use reduced doses of both (not full doses)
• Clear 24-48 hour schedule
• Trip sitter mandatory
• Safe, comfortable setting essential
• Cross-tolerance: if using frequently, effects may be diminished

✅ Generally Safe Combination

Caffeine is generally safe with psilocybin but may increase anxiety in sensitive individuals.

Effects

• May provide slight energy boost
• Can increase alertness and focus
• May slightly increase anxiety in sensitive people
• Minimal interaction with psychedelic effects

Recommendations

• Moderate amounts generally fine (1-2 cups coffee)
• Avoid high doses if prone to anxiety
• Morning coffee before day trip: typically safe
• Consider skipping if you're already feeling anxious
• Stay hydrated with water as well

✅ No Dangerous Interaction

Nicotine/tobacco has no known dangerous interaction with psilocybin. Some users report enhanced or altered smoking experience.

Common Experiences

• Smoking may feel more intense or unusual
• Some find it grounding during difficult moments
• Others find it unpleasant or unnecessary
• No pharmacological contraindication

Considerations

• Fire safety: ensure safe smoking practices while impaired
• May be good time to reduce/quit (altered perspective on habit)
• Some users lose desire to smoke during trip
• Smoke outside or in well-ventilated area

✅ Safe for Post-Trip Sleep

Melatonin is safe to use after psilocybin experience to aid sleep. No known negative interactions.

Usage Guidelines

• Safe to take after trip has ended
• Can help with post-trip insomnia
• No impact on trip if taken beforehand
• Standard doses (1-5mg) appropriate

Post-Trip Sleep Tips

• Allow 6-8 hours after dosing before trying to sleep
• Melatonin + magnesium can be effective combination
• Chamomile tea also helpful
• Avoid screens and stimulation
• Many find sleep difficult even with aids - this is normal