For most people living with MS, fatigue is the symptom that runs the day. Narrowband UVB light therapy — non-drug, prescribed, used at home — is being studied as a way to calm the inflammation behind it.
“I'm not kidding — this gave me my life back.”
Kathy Reagan Young
Relapsing-Remitting MS · Dx 2008
MS fatigue is driven by the same immune activity behind the disease itself — not by lack of sleep. That's why it can arrive without warning, and why the usual advice rarely helps.
A different kind of rest — one that works on the inflammation, not just the clock.
A full-body Phothera 600 session at home takes only a few minutes a day.
Narrowband UVB light has been prescribed by dermatologists for decades to calm overactive immune responses in the skin. Researchers are now studying whether that same immune-stabilizing effect can ease the fatigue of MS. Here is the thinking.
MS fatigue tracks with markers of systemic inflammation — the immune system running hot, not the body running low.
Narrowband UVB is thought to nudge the immune system toward balance — the same mechanism that clears inflammatory skin conditions.
Phase 1 work points to measurable immune stabilization. This use is still investigational — which is exactly why the research matters.
From a compact tabletop unit for targeted areas to full-body panels — all prescribed, all used on your own schedule.
Phothera 200
Compact tabletop unit for targeted areas — hands, feet, face, forearms.
Phothera 600
Full-body phototherapy in the comfort of home.
Phothera 600-3D
Quick, full-body sessions with wraparound coverage.
25 yrs
Clinical safety record for NB-UVB
FDA-cleared
Devices, for dermatologic use
350M+
People worldwide with autoimmune conditions
At home
Prescribed, used on your schedule
“I was in a meeting, and someone said to me, ‘Wow, you seem like you're pretty high energy!’ … To find a treatment that lets you actually take care of yourself is kind of amazing.”
“UV light calms inflammation in the skin, the nervous system, the pancreas and the gut. Its potential is not fully realized.”
“The help we received from Cytokind in choosing and setting up the light was amazing.”
Individual experiences and are not typical or predictive of results. Researcher quotations appear in Scientific American (Rowan Jacobsen, 2025).
Tell us about your situation. We'll answer your questions honestly — including whether this is a fit for you.
These are prescription medical devices. We'll help you and your physician with everything the paperwork needs.
It arrives ready to use, with guidance on getting started and support whenever you need it.
A quick 10-minute call — no pressure, no obligation. Pick a time that works for you.
Pick a time that works for you. We'll call you, answer your questions honestly, and help you figure out whether light therapy is a fit — no pressure, no obligation.
Prefer to talk sooner rather than later? Let us know when you book and we'll reach out as soon as we can.
A plain-English summary of what the research shows. We'll only follow up if you ask.
“UV light therapy holds promise — something important is going on.”
Scientific American · June 2025
