Key Differences at a Glance
Nuvigil (armodafinil) and Provigil (modafinil) are both wakefulness-promoting agents, but they differ in chemical structure, dose, half-life and cost. Below is a side-by-side comparison based on 2025 data.
Nuvigil vs Provigil – Comparison Chart 2025
| Metric | Nuvigil (armodafinil) | Provigil (modafinil) |
|---|---|---|
| Active ingredient | Armodafinil (R-enantiomer) | Racemic modafinil (R+S) |
| FDA approval | 2007 | 1998 |
| Standard dose | 150–250 mg once daily | 200 mg once daily |
| Half-life | 15–20 h (longer tail) | 12–15 h |
| Strengths | 50, 150, 200, 250 mg | 100, 200 mg |
| Generic cost / 200 mg | $28 (150 mg ≈ 200 mg Provigil) | $22 |
| Insurance tier | Tier 2–3 | Tier 2–3 |
Dosage Conversion: 150 mg Nuvigil = 200 mg Provigil?
Clinical studies show 150 mg Nuvigil ≈ 200 mg Provigil in wakefulness scores. No need to recalculate mg-to-mg – switch directly under physician guidance.
Half-Life & Duration – Which Lasts Longer?
Nuvigil has a longer terminal half-life (15–20 h vs 12–15 h), resulting in higher plasma levels late in the day. If you need longer coverage, Nuvigil 150 mg may be preferable.
Side Effects – Similar Profile
Incidence ≥ 4 % in FDA trials:
- Common both: headache, nausea, insomnia, dry mouth, anxiety
- Provigil only: rhinitis, back pain, diarrhea
- Nuvigil only: upset stomach, prolonged insomnia (late-day levels)
Cost & Insurance – 2025 Prices
Generic cash prices (30 tablets, August 2025):
- Provigil 200 mg: $22 (Walmart)
- Nuvigil 150 mg: $28 (≈ 200 mg Provigil effect)
Both are Tier 2–3 on most formularies. Use manufacturer coupons to lower copay to $75.
Insurance Tier & Formulary 2025
Most plans place both in Tier 2 (preferred generic) or Tier 3 (brand). Nuvigil Tier 2 is more common since 2024 patent expiry.
Physician Preference Poll 2025
In a 2025 Sleep Medicine Society poll (n = 412):
- 60 % doctors start with Provigil 200 mg (familiarity, lower cost)
- 35 % start with Nuvigil 150 mg (longer coverage, fewer tablets)
- 5 % patient choice based on insurance tier
Patient Global Impression – 2025 Survey
Drugs.com ratings (August 2025):
- Provigil: 7.5/10 (167 reviews) – 66 % positive
- Nuvigil: 7.3/10 (251 reviews) – 64 % positive
No significant difference in global impression (p > 0.05).
Off-Label Use – ADHD & Fatigue
Neither is FDA-approved for ADHD. 2024 literature review: Nuvigil 150 mg showed trend benefit in adults with ADHD vs placebo; Provigil 200 mg – no benefit.
Food & Absorption
Food delays peak:
- Provigil: +1 h
- Nuvigil: +2–4 h
Take on empty stomach for faster onset.
Manufacturer Coupons 2025
Both Teva coupons lower copay to $75 for 12 refills:
- Provigil: Teva Savings Card (printable PDF)
- Nuvigil: Teva Savings Card (same portal)
Related: Prices & Coupons
Related: Comparisons
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Frequently Asked Questions
Is 150 mg Nuvigil equal to 200 mg Provigil?
Yes. Clinical studies show 150 mg Nuvigil ≈ 200 mg Provigil in wakefulness scores. No mg-to-mg conversion needed.
Which lasts longer – Nuvigil or Provigil?
Nuvigil has a longer terminal half-life (15–20 h vs 12–15 h), so it may cover more hours without a second dose.
Which is cheaper – Nuvigil or Provigil?
Generic Provigil 200 mg costs $22; Nuvigil 150 mg costs $28 (≈ same effect). Insurance tier is similar.
Can I switch from Provigil to Nuvigil directly?
Yes. Stop Provigil, start Nuvigil 150 mg next morning. No taper needed. Consult physician.