How Long Does TMS Last? Treatment Timeline and Long-Term Results

Everything you need to know about How Long Does TMS Last? Treatment Timeline and Long-Term Results — how it works, what it costs, and how to find a provider who actually knows what they're doing.

When people ask how long TMS therapy lasts, they usually mean one of two things. How long is the treatment itself? Or how long do the results stick around? Both matter, so this guide covers each.

Related: TMS for Depression: What 30+ Clinical Trials Actually Show · Maintenance TMS: How to Hold On to the Gains · TMS Week by Week

What You’ll Learn

• What the standard TMS treatment course looks like week by week
• How long TMS results typically last
• How maintenance sessions work
• What to do if symptoms return
• The long-term picture for TMS outcomes

The Treatment Course: 6-9 Weeks

A standard course of TMS for depression involves 36 sessions, delivered five days a week over approximately 7 weeks. Some protocols taper at the end. For example, three sessions in the final week instead of five. This can stretch the course to 8 or 9 weeks.

Each individual session takes 20-40 minutes for standard rTMS. If your clinic offers theta burst stimulation (TBS), sessions can be as short as 3 minutes, though you still need to account for setup time and travel.

Here is what the typical timeline looks like:

• Weeks 1-2: Most people feel nothing yet. Some get headaches from the treatment but no mood changes.
• Weeks 3-4: This is when many people start noticing something shifting. Better sleep, more motivation, slightly improved mood.
• Weeks 5-6: Many responders see their most significant improvement during this window, though timing varies.
• Weeks 7-9: Taper sessions and wrapping up the course. Some people continue to improve even after the last session.

The most important thing about this timeline: do not quit early. Talk with your provider before stopping early: response often builds gradually, and some people who stop partway through may miss improvement that would have come later.

As we covered in our what TMS feels like guide, mood improvement typically starts around weeks 2-3, often noticed by others before you notice it yourself. Weeks 3-6 is when most responders feel the most significant shift.

See also: TMS for Alcohol Dependence · TMS for Tinnitus

How Long Do Results Last?

This is the harder question, and the honest answer is it depends.

For people who respond to TMS, published follow-up data shows:

• In one large naturalistic study, 62.5% of patients who responded or remitted after the acute course still met response criteria through 12 months of follow-up (Dunner et al., 2014) — meaning a substantial minority lost response during that year
• Many patients received additional TMS during follow-up: about 36% in that study had TMS reintroduced
• Durability beyond one to two years is less well studied

These numbers come from a follow-up study of patients after their initial treatment course. The reality is that TMS durability is highly individual. Some people get one round and stay well for years. Others need periodic tune-ups.

Maintenance Sessions

When symptoms start creeping back, the typical approach is maintenance TMS, periodic sessions designed to sustain the initial improvement. Many providers offer it, but it is not universal, and the evidence base for specific maintenance schedules is limited.

Maintenance protocols vary, but common approaches include:

• Once weekly for a month, then taper to biweekly or monthly
• A cluster of sessions (5-10 over 1-2 weeks) when symptoms re-emerge
• Monthly single sessions as a preventive measure

Insurance coverage for maintenance is hit or miss — some insurers’ policies, such as Aetna’s, treat maintenance TMS as experimental. Others may cover repeat courses when symptoms return and prior response is documented. Ask your clinic about this upfront so you are not caught off guard.

See also: Accelerated TMS Protocols · TMS vs Ketamine

What to Do if Symptoms Return

If your depression starts coming back after TMS, you have several options:

1. Maintenance sessions as described above. This is the go-to approach for most providers.
2. A full retreatment course. Some people do a second round of sessions. Observational data suggests many people who responded the first time respond again, though not everyone does.
3. Combining TMS with other treatments. Many people do best with TMS plus ongoing therapy, medication, or lifestyle changes. TMS does not have to stand alone.
4. Adjusting the protocol. Your provider might try a different target, different intensity, or switch from standard rTMS to theta burst (or vice versa).

The key is not to wait until you are fully relapsed. If you notice early signs, sleep disruption, loss of interest, creeping negativity, contact your provider. Catching it early makes retreatment faster and easier.

The Long-Term Picture

TMS has been FDA-cleared for depression since 2008, and most published follow-up data covers one to a few years. What it shows is generally encouraging. For many people, TMS provides a durable reduction in depression severity, especially when paired with other treatments and backed by maintenance sessions when needed.

It is not a permanent fix for most people. But then again, neither is any depression treatment. Antidepressants require ongoing use. Therapy requires ongoing work. TMS requires occasional maintenance. The goal is not a one-time cure. It is sustained management that gives you your life back.

See also: SAINT Protocol (Stanford Neuromodulation Therapy) · Patient Video Testimonials

Related reading

• TMS for Multiple Sclerosis: Addressing Fatigue, Depression, and Cognitive Impairment
• What TMS Actually Feels Like: A Session-by-Session Guide
• How to Prepare for Your First TMS Session
• Preparing for Your First TMS Session: A Practical Walkthrough
• TMS for Treatment-Resistant Depression: What Patients Need to Know