Is Your Nootropic Stack Safe? [Checker]

🧠 Nootropic Risk Checker

Smart drug interaction analyzer: synergy alerts, cholinergic crisis, heart strain warnings.

✅ Good: Piracetam + Choline ⚠️ Bad: Huperzine A + Donepezil 💀 Ugly: Modafinil + Stimulants

Select your stack

Check all nootropics you currently take or plan to combine. Optionally add extra medications (e.g., donepezil, Adderall, caffeine) for advanced alerts.

Piracetam

Piracetam dosage level < 1200 mg 1200 - 2400 mg > 2400 mg

Modafinil

Modafinil dosage level < 100 mg 100 - 200 mg > 200 mg

Phenylpiracetam

Phenylpiracetam dosage level < 100 mg 100 - 200 mg > 200 mg

Noopept

Noopept dosage level < 10 mg 10 - 20 mg > 20 mg

Alpha-GPC (choline)

Alpha-GPC dosage level < 300 mg 300 - 600 mg > 600 mg

Huperzine A

Huperzine A dosage level < 100 mcg 100 - 200 mcg > 200 mcg

Aniracetam

Aniracetam dosage level < 750 mg 750 - 1500 mg > 1500 mg

Oxiracetam

Oxiracetam dosage level < 1200 mg 1200 - 2400 mg > 2400 mg

Uridine Monophosphate

Uridine dosage level < 250 mg 250 - 500 mg > 500 mg

L-Theanine

L-Theanine dosage level < 100 mg 100 - 200 mg > 200 mg

Additional drugs / stimulants (comma separated)

⚠️ Include donepezil for cholinergic alert, or stimulants like Adderall/caffeine for heart strain warning.

⚠️ MEDICAL DISCLAIMER & CRISIS HOTLINE

This tool is for educational purposes only — not medical advice. Always consult a physician before combining nootropics, especially if you have pre-existing conditions (heart, liver, neurological disorders) or take prescription medications.

If you experience chest pain, palpitations, severe headache, difficulty breathing, or signs of cholinergic crisis (muscle weakness, excessive salivation, seizures):
Stop use immediately and seek emergency medical attention.

Poison Control (US): 1-800-222-1222 | Emergency: 911

Share:

⚠️ Educational tool only — not medical advice. Consult a physician before combining nootropics. Interaction logic based on known pharmacology.

Embed this calculator

Copy the code below and paste into your blog / website.

⚡ Stop Guessing: Free Health & Nutrition Calculators

One quick click could save you from a bad reaction, a ruined diet, or a sleepless night. Try these tools used by thousands of readers:

• 🔥 Not sure if you're overeating or under-eating? Use the Meal Calorie Calculator → Get exact calories from grams or cups in seconds.
• ⚠️ Herbal supplements + meds = silent danger. Check Interactions Now → St. John’s Wort, Ginkgo, or Garlic with blood thinners? Don't guess.
• 🤰 That anti-aging cream could harm your baby. Scan Your Skincare → Instantly flag retinol, salicylic acid, and unsafe ingredients.
• ☕ Drinking coffee at the wrong time ruins your sleep. Try the Caffeine Timing Optimizer → Find your exact cutoff hour for deeper rest.
• ☀️ Your morning stack might be deadly (no exaggeration). Avoid Deadly Stacks → Check for lethal combinations before you swallow.
• 🥩 Kicked out of ketosis by "zero-carb" lies? Use the Keto/Carnivore Checker → Verify any food — even deli meats, spices, and sauces.

✅ 100% free. No signup. Results in under 10 seconds.

📘 How to Use the Nootropic Risk Checker

A complete guide to smart drug interaction analysis — synergy, risks, and pharmacology explained.

Step-by-Step Guide

1 Select Your Nootropics

Check the boxes for every compound you currently take or plan to combine: Piracetam, Modafinil, Phenylpiracetam, Noopept, Alpha-GPC, Huperzine A, Aniracetam, Oxiracetam, Uridine Monophosphate, L-Theanine.

2 Adjust Dosage Sliders

For each selected compound, move the slider to Low / Medium / High. This fine-tunes the risk assessment — higher doses increase severity of 💀 Ugly interactions.

3 Add Extra Medications

In the text field, enter any additional drugs (comma-separated): e.g., donepezil, Adderall, caffeine. The calculator detects known interactions.

4 Analyze & Interpret Results

Click “Analyze Interactions”. Results appear with color-coded badges: ✅ Good (synergy), ⚠️ Bad (moderate risk), 💀 Ugly (dangerous). Hover the ℹ️ icon for pharmacological mechanism.

Why This Matters

Nootropics (“smart drugs”) are often stacked without medical oversight. Unlike commercial drug databases, no standard tool checks interactions between racetams, cholinergics, and stimulants. Common preventable mistakes include:

• Piracetam without choline → acetylcholine depletion → debilitating “racetam headache”.
• Huperzine A + donepezil (both AChE inhibitors) → cholinergic crisis (seizures, bradycardia, salivation).
• Modafinil + caffeine / Adderall → synergistic heart strain (tachycardia, hypertension, arrhythmia risk).

This calculator translates pharmacology into actionable warnings, potentially preventing emergency room visits.

The Math Behind the Logic

The calculator uses deterministic rule-based scoring (not machine learning). Each interaction has a severity weight. Below are examples of the internal risk scoring:

Rule / Interaction	Condition	Risk Score (0–100)	Output
Piracetam + Alpha-GPC	Both checked	-20 (beneficial)	✅ Good
Piracetam alone (no choline)	Piracetam checked, Alpha-GPC unchecked	+15	ℹ️ Tip
Modafinil (high dose) + Adderall	Dose slider “high” + extra drug “adderall”	+85	💀 Ugly
Huperzine A + donepezil	Both present	+70	⚠️ Bad
Modafinil (low dose) + caffeine	Dose “low” + extra “caffeine”	+40 (moderate, but still flagged Ugly with nuance)	💀 Ugly
Uridine + Alpha-GPC	Both checked	-15 (synergy)	✅ Good

* The tool shows the highest severity alert when multiple interactions exist. Dosage sliders modify risk (low dose reduces severity, high dose increases it).

Frequently Asked Questions

Does this replace a doctor?

No. This is an educational screening tool only. Always consult a physician before combining nootropics, especially if you have pre-existing heart, liver, or neurological conditions or take prescription medications.

Why is there no interaction for Noopept + Huperzine A?

Both affect acetylcholine, but clinical evidence for a dangerous synergistic interaction is limited. The calculator prioritizes well-documented, life-threatening risks (cholinergic crisis, heart strain).

Can I save or share my results?

Yes. Use the Facebook, X (Twitter), Reddit, or WhatsApp share buttons (icons only). You can also copy the embedding code to paste the calculator into your own blog or website.

What if I take a drug not listed in the checkboxes?

Use the “Additional drugs / stimulants” text field. The calculator recognizes donepezil, Adderall (amphetamine), methylphenidate (Ritalin), caffeine, ephedrine, and several other cholinergic or stimulant agents via keyword matching.

How accurate are the dosage sliders?

They approximate risk levels (Low / Medium / High). Exact thresholds vary by individual metabolism, tolerance, and body weight. Always start with the lowest effective dose regardless of slider suggestions.

Why does the calculator show “Good” for L-Theanine + Caffeine?

Peer-reviewed studies confirm that L-Theanine (100–200 mg) reduces caffeine-induced anxiety, jitters, and blood pressure elevation without diminishing alertness — a classic synergy. However, this does NOT apply when Modafinil is also present.

🚨 When to Seek Emergency Help

If you experience chest pain, palpitations, severe headache, difficulty breathing, muscle weakness, excessive salivation, or seizures after combining nootropics — stop use immediately and call emergency services (911) or Poison Control at 1-800-222-1222.

Clicking the button will scroll you to the top of the blog post where the calculator is embedded.

Nootropic Risk Checker v2.0 — Educational tool. Not FDA approved. Always consult a physician.

📚 Scientific References & Verified Citations

Peer-reviewed evidence supporting the interaction rules in this calculator. All citations are from PubMed-indexed journals.

✅ Racetam + Choline (Mechanism)

Pilch, H., & Müller, W.E. (1988). "Piracetam elevates muscarinic cholinergic receptor density in the frontal cortex of aged but not of young mice." Psychopharmacology (Berl), 97(2), 251-253. → Chronic piracetam treatment elevated m-cholinoceptor density in aged mice by 30-40%, explaining the positive effects of combining cholinergic precursors with piracetam on memory and cognitive functions.

PMID: 3126530 PubMed

✅ Racetam + Choline (Behavioral)

Ennaceur, A., et al. (1987). "Effect of combined or separate administration of piracetam and choline on learning and memory in the rat." Psychopharmacology (Berl), 92(3), 401-406. → Investigated combined piracetam and choline administration on delayed alternation tasks, recognition memory, and neurochemical markers (5-HT, choline uptake) in frontal cortex and hippocampus.

PMID: 3110830 PubMed

✅ Nootropic-Cholinergic Interaction

Pepeu, G., & Spignoli, G. (1989). "Nootropic drugs and brain cholinergic mechanisms." Progress in Neuro-Psychopharmacology & Biological Psychiatry, 13 Suppl, S77-S88. → Comprehensive review confirming pyrrolidinone derivatives (piracetam, oxiracetam, aniracetam) activate brain cholinergic mechanisms and prevent scopolamine-induced amnesia.

PMID: 2694231 PubMed

⚠️ Dual AChE Inhibition

Okada, M., et al. (2020). "Differential blockade by huperzine A and donepezil of sympathetic nicotinic acetylcholine receptor-mediated nitrergic neurogenic dilations in porcine basilar arteries." European Journal of Pharmacology, 871, 172930. → Both huperzine A and donepezil are cholinesterase inhibitors that block nicotinic acetylcholine receptors. Huperzine A was 30-fold less potent than donepezil, but both affect ACh-mediated neurotransmission.

PMID: 31836535 PubMed

⚠️ Huperzine A + Donepezil (AChE)

Kataoka, S., et al. (2015). "Japanese Huperzia serrata extract and the constituent, huperzine A, ameliorate the scopolamine-induced cognitive impairment in mice." Bioscience, Biotechnology, and Biochemistry, 79(11), 1838-1844. → Huperzine A (0.5% in H. serrata extract) and donepezil (10 mg/kg) both inhibit acetylcholinesterase (AChE) and ameliorate cognitive function. Combining them risks cholinergic overstimulation.

PMID: 26059088 PubMed

✅ Uridine + Choline (Synaptogenesis)

Cansev, M. (2016). "Synaptogenesis: Modulation by Availability of Membrane Phospholipid Precursors." Neuromolecular Medicine, 18(3), 426-439. → Uridine, DHA, and choline interact via the Kennedy pathway to form new brain membranes and synaptic proteins. Supplementation increases dendritic spines and enhances neurotransmission.

PMID: 27250850 PubMed

✅ Uridine + Choline (Clinical)

Baumel, B.S., et al. (2021). "Potential Neuroregenerative and Neuroprotective Effects of Uridine/Choline-Enriched Multinutrient Dietary Intervention for Mild Cognitive Impairment: A Narrative Review." Neurology and Therapy, 10(1), 27-42. → Uridine and choline work synergistically with DHA to increase phosphatidylcholine formation. Multinutrient intervention slowed brain atrophy and improved cognition in prodromal AD patients.

PMID: 33368017 PubMed

✅ L-Theanine + Caffeine

Bryan, J. (2008). "Psychological effects of dietary components of tea: caffeine and L-theanine." Nutrition Reviews, 66(2), 82-90. → L-theanine interacts with caffeine to enhance attention switching and the ability to ignore distraction. Caffeinated tea maintains alertness, focused attention, and accuracy.

PMID: 18254874 PubMed

ℹ️ Caffeine + Theanine (2026)

Recent RCT (2026). "Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes." ClinicalTrials.gov NCT07268573. → Double-blind, placebo-controlled crossover study (N=20 athletes) examined CAF (3 mg/kg) + TEA (200 mg) combination on maximal strength, aerobic endurance, and eye-hand coordination.

PMID: 41668720 PubMed

All citations verified through PubMed (National Library of Medicine). Interaction severity scoring incorporates mechanistic evidence from peer-reviewed literature (1987-2026).

Clinical Note: While piracetam elevates muscarinic receptor density, the Ennaceur (1987) study found that combined piracetam + choline showed complex effects on delayed alternation tasks. Always consult a physician before combining nootropics.