Flow Neuroscience Headset
EU-cleared for major depression. The tDCS device with the most clinical trial citations in the consumer space. Subscription model for the paired CBT therapy app.
Shop Flow ↗Devices · Neurostimulation
Brain Stimulation (tDCS · Gamma · Transcranial PBM)
Grade B — FDA-cleared depression indication (tDCS) and growing transcranial PBM literature.
The evidence
Transcranial direct-current stimulation (tDCS) has FDA clearance in the EU for major depressive disorder; the most-cited consumer device, Flow Neuroscience, is the device used in the published depression RCTs. Transcranial photobiomodulation (810 nm to specific brain regions) has emerging cognition data in mild cognitive impairment and stroke recovery. Gamma-frequency 40 Hz light/sound stimulation (Cognito-style) is earlier-stage but mechanistically interesting.
Our picks
Halacha notes
Kosher Evidence Card
- Halacha — Shabbat
- Activating the stimulator is a melacha. App-controlled sessions cannot be initiated on Shabbat.
- Halacha — Yom Tov
- Same as Shabbat.
- Choleh Status
- Documented major depressive disorder may rise to choleh-relevant in specific cases — discuss with your rav and treating physician together.
- Clinic Notes
- Home device.
- Test Before Use
- Neurology consultation if seizure history. Avoid alcohol within 24h of session.
- Ask Your Rav About
- Choleh framing for daily depression-treatment protocols crossing Shabbat; whether continuous-use questions apply.
FAQ
Is tDCS the same as the old 'brain-zapping' kits?
No. tDCS uses 1–2 mA low-current stimulation at specific scalp locations for documented durations. Older DIY kits had no current control and no protocol — that is not what is being studied.
How long until benefit?
Flow's depression trial used 30-minute daily sessions for 6 weeks. Most clinical signal appears between weeks 3 and 6.
Selected human-trial references
Direct PubMed links to the strongest published human studies behind this category. We update these as new trials emerge. Citations are educational — not endorsements of any specific brand or treatment.