# Modafinil **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/modafinil **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 8 / 10 **Category:** Other **Also Known As:** 2-[(diphenylmethyl)sulfinyl]acetamide, Provigil, Alertec, Modiodal, Modvigil, Modalert, CRL-40,940 ## Overview Modafinil is a eugeroic compound that promotes wakefulness by selectively blocking [dopamine](/ingredients/condition/mood) reuptake transporters and modulating histamine pathways. It enhances [cognitive performance](/ingredients/condition/cognitive) and alertness without the jittery effects typical of traditional stimulants. ## Health Benefits - Promotes wakefulness by stimulating the central nervous system, reducing fatigue and enhancing alertness. - Enhances cognitive function by modulating [neurotransmitter activity](/ingredients/condition/cognitive), improving memory and learning. - Supports mental clarity by optimizing dopamine levels, promoting focus and motivation. - Reduces fatigue by increasing histamine levels, sustaining energy and alertness. - Boosts mood by enhancing [serotonin](/ingredients/condition/mood) activity, promoting a sense of well-being. - Improves decision-making skills by enhancing prefrontal cortex activity, aiding in complex tasks. - Increases attention span by stabilizing brain wave activity, helping maintain focus and concentration. ## Mechanism of Action Modafinil primarily works by blocking [dopamine](/ingredients/condition/mood) reuptake transporters (DAT), increasing extracellular dopamine concentrations in the nucleus accumbens and prefrontal cortex. It also modulates histamine release in the hypothalamus and affects orexin/hypocretin neurons, which regulate sleep-wake cycles. Additionally, modafinil influences norepinephrine and GABA [neurotransmitter](/ingredients/condition/cognitive) systems, contributing to its wake-promoting effects. ## Clinical Summary Clinical trials involving over 2,000 participants demonstrate modafinil's efficacy for treating narcolepsy, with 200mg daily doses improving wakefulness scores by 40-60% compared to placebo. Studies in healthy individuals show cognitive improvements including 15-20% enhanced working memory and sustained attention. However, most [cognitive enhancement](/ingredients/condition/cognitive) research involves small sample sizes (20-50 participants) and short-term administration. Long-term safety data remains limited, with most studies lasting under 12 weeks. ## Nutritional Profile - Synthetic compound with wakefulness-promoting properties. - Acts on the central nervous system to enhance alertness. - Non-addictive with a low potential for abuse. ## Dosage & Preparation Typical dosage ranges from 100-200 mg per day. Available in tablets. Consult a healthcare provider before use. ## Safety & Drug Interactions Common side effects include headache (34% of users), nausea, nervousness, and [insomnia](/ingredients/condition/sleep), particularly with doses exceeding 200mg daily. Modafinil significantly reduces effectiveness of hormonal contraceptives by inducing CYP3A4 enzymes for up to one month after discontinuation. It can interact with warfarin, phenytoin, and tricyclic antidepressants by affecting liver [metabolism](/ingredients/condition/weight-management). Contraindicated in pregnancy and individuals with left ventricular hypertrophy or mitral valve prolapse due to potential [cardiovascular](/ingredients/condition/heart-health) effects. ## Scientific Research Numerous RCTs and meta-analyses confirm its efficacy in promoting wakefulness and [cognitive enhancement](/ingredients/condition/cognitive), particularly in sleep-deprived individuals. ## Historical & Cultural Context Developed in the late 1970s in France as a treatment for narcolepsy. Widely used for its [cognitive](/ingredients/condition/cognitive)-enhancing effects. ## Synergistic Combinations L-Theanine, Caffeine, Rhodiola Rosea ## Known Interactions | Substance | Severity | Summary | URL | |---|---|---|---| | St. Johns Wort | MODERATE | 🟡 USE CAUTION — St. Johns Wort and Modafinil may interact. Talk to your doctor before combining. | https://ingredients.hermeticasuperfoods.com/interactions/st-johns-wort | | Topiramate | SAFE | 🟢 SAFE — Modafinil and Topiramate can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/topiramate | | Spironolactone | SAFE | 🟢 SAFE — Modafinil and Spironolactone can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/spironolactone | | Hydrochlorothiazide | SAFE | 🟢 SAFE — Modafinil and Hydrochlorothiazide can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/hydrochlorothiazide | | Furosemide | SAFE | 🟢 SAFE — Modafinil and Furosemide can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/furosemide | | Tamsulosin | SAFE | 🟢 SAFE — Modafinil and Tamsulosin can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/tamsulosin | | Finasteride | SAFE | 🟢 SAFE — Modafinil and Finasteride can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/finasteride | | Sumatriptan | SAFE | 🟢 SAFE — Modafinil and Sumatriptan can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/sumatriptan | | Zolpidem | SAFE | 🟢 SAFE — Modafinil and Zolpidem can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/zolpidem | | Clonidine | SAFE | 🟢 SAFE — Modafinil and Clonidine can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/clonidine | | Boswellia | SAFE | 🟢 SAFE — Modafinil and Boswellia can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/boswellia | | Cat's Claw | SAFE | 🟢 SAFE — Modafinil and Cat's Claw can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/cats-claw | | Astragalus | SAFE | 🟢 SAFE — Modafinil and Astragalus can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/astragalus | | Holy Basil | SAFE | 🟢 SAFE — Modafinil and Holy Basil can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/holy-basil | | Moringa | SAFE | 🟢 SAFE — Modafinil and Moringa can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/moringa | | Spirulina | SAFE | 🟢 SAFE — Modafinil and Spirulina can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/spirulina | | Chlorella | SAFE | 🟢 SAFE — Modafinil and Chlorella can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/chlorella | | Bee Pollen | SAFE | 🟢 SAFE — Modafinil and Bee Pollen can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/bee-pollen | | Royal Jelly | SAFE | 🟢 SAFE — Modafinil and Royal Jelly can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/royal-jelly | | Colostrum | SAFE | 🟢 SAFE — Modafinil and Colostrum can be taken together safely. | https://ingredients.hermeticasuperfoods.com/interactions/colostrum | ## Frequently Asked Questions ### What is the recommended modafinil dosage for cognitive enhancement? Clinical studies typically use 100-200mg taken in the morning, with 200mg being the standard therapeutic dose. Higher doses (400mg) do not provide additional cognitive benefits but increase side effect risk. ### How long does modafinil stay in your system? Modafinil has a half-life of 12-15 hours, with effects lasting 12-22 hours depending on individual metabolism. It reaches peak blood concentration 2-4 hours after oral administration. ### Can you take modafinil with caffeine safely? While not contraindicated, combining modafinil with caffeine may increase anxiety, jitteriness, and cardiovascular effects like elevated heart rate. Most users report better tolerance when limiting caffeine intake. ### Does modafinil cause tolerance or dependence? Modafinil shows low abuse potential with minimal tolerance development in clinical studies lasting up to 40 weeks. However, psychological dependence can occur, and withdrawal may cause fatigue and sleepiness. ### Is modafinil legal to buy as a supplement? Modafinil is a prescription medication (Schedule IV controlled substance in the US) and cannot be legally sold as a dietary supplement. It requires a valid prescription for conditions like narcolepsy or shift work sleep disorder. ### Does modafinil interact with common medications like antidepressants or birth control? Modafinil can interact with several medications, including SSRIs, warfarin, and oral contraceptives, potentially reducing their effectiveness or increasing side effects. It is metabolized by the cytochrome P450 enzyme system, which means it may affect the metabolism of drugs processed through the same pathway. Always consult with a healthcare provider before combining modafinil with prescription medications to assess potential interactions. Your doctor can adjust dosages or recommend alternative timing to minimize risks. ### What does clinical research actually show about modafinil's cognitive benefits? Research demonstrates that modafinil significantly improves sustained attention, working memory, and executive function in both sleep-deprived and well-rested individuals. Multiple peer-reviewed studies have shown its effectiveness for enhancing focus and mental clarity, particularly in tasks requiring sustained concentration. However, effects on long-term memory consolidation are less conclusive, and most studies have been conducted in clinical or controlled settings rather than healthy populations seeking enhancement. Individual responses vary based on genetics, baseline cognitive function, and lifestyle factors. ### Who should avoid modafinil, and is it safe for older adults? Modafinil should be avoided by individuals with a history of cardiovascular disease, hypertension, liver or kidney impairment, or psychiatric conditions like anxiety or bipolar disorder, as it may exacerbate these conditions. Older adults can use modafinil but typically require lower doses due to age-related changes in metabolism and increased sensitivity to stimulants. Pregnant and breastfeeding women should not use modafinil due to insufficient safety data. Anyone with a personal or family history of substance abuse should exercise caution, as modafinil carries a potential for psychological dependence. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*