Provigil Max Dose Chart 2025
The maximum Provigil dose is 400 mg once daily. Doses above 400 mg are off-label and do not provide additional benefit vs 200 mg.
| Dose | Benefit vs 200 mg | Side Effects | Off-Label |
|---|---|---|---|
| 200 mg | Standard | Baseline | No |
| 400 mg | Maximum | + Headache | No |
| 600 mg | No extra | + Anxiety | Yes |
600 mg Off-Label – 2025 Data
- MS fatigue: 600 mg AM – no extra benefit vs 400 mg.
- Parkinson’s fatigue: 600 mg AM – no extra benefit vs 400 mg.
- ADHD (adults): not recommended – trials failed vs placebo.
Hepatic & Renal Adjustment – 2025 Guide
- Severe hepatic (Child-Pugh B/C): reduce to 100 mg once daily (50 % cut).
- Renal impairment (CrCl 20–90 mL/min): no adjustment needed.
- Geriatric (≥65 y): start 100 mg, monitor BP/HR.
Overdose Protocol – 2025 Guide
- Symptoms: agitation, tachycardia, insomnia.
- Supportive care: IV fluids, benzodiazepines.
- Half-life: 12–15 h – supportive only.
Taper – Is It Needed?
No taper needed – stop abruptly safe. No withdrawal syndrome reported.
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Frequently Asked Questions
Can I take 600 mg of Provigil at once?
Yes, 600 mg once daily is off-label, but no extra benefit vs 400 mg was proven. Split 200+200 if side effects occur.
What happens if I overdose Provigil?
Symptoms: agitation, tachycardia, insomnia. Supportive care only – half-life 12–15 h.
Do I need to taper Provigil?
No taper needed – stop abruptly safe. No withdrawal syndrome reported.
Is 600 mg safe long-term?
No long-term benefit vs 400 mg. Monitor BP/HR every 4 weeks.