TMS works better than antidepressants for many people with treatment-resistant depression, and the research is starting to prove it.

While antidepressants are still the most prescribed treatment, they don’t work for everyone. Up to 30% of patients see little to no improvement, even after trying several medications (1). That’s why more people are turning to TMS therapy for treating depression. Transcranial Magnetic Stimulation (TMS) is a non-drug therapy that targets the brain directly, without the widespread side effects. The real question isn’t which treatment people know best. It’s which one actually helps them feel like themselves again.

What Makes Depression So Hard to Treat?

What works for one person may not work for another. That’s one of the biggest reasons it’s so difficult to treat.

Major depressive disorder (MDD) is diagnosed based on a person’s reported symptoms, observed behavior, and a clinical mental status exam, not brain scans or lab tests. There’s no blood test for depression, though doctors may run labs to rule out medical conditions with similar symptoms, like thyroid disorders or vitamin deficiencies. That means the diagnosis is largely subjective, relying on what the patient describes and what clinicians can observe. And because depression shows up differently in different people, numbness and disconnection in one person, agitation and anxiety in another, treatment must be chosen carefully. 

Another issue is that brain chemistry varies widely. Antidepressants work by altering neurotransmitters like serotonin, norepinephrine, and dopamine. But there’s no way to know in advance which chemical imbalance, if any, is driving a person’s depression. So treatment starts as guesswork.

And then there’s treatment resistance. Some people go through multiple medications without ever finding real relief. Instead of getting better, they end up cycling through new prescriptions, higher doses, or unwanted side effects, often with no clear direction. It can be exhausting, disheartening, and deeply isolating.

Depression often shows up alongside other conditions like anxiety, PTSD, or ADHD. That can make treatment more challenging. And when you factor in biology, psychology, life experiences, and even genetics, it’s clear there’s no one-size-fits-all path.

What’s the Difference Between TMS and Antidepressants?

Antidepressants change brain chemistry using daily pills. TMS doesn’t use medication at all. Instead, it sends magnetic pulses to the brain areas that control mood.

Antidepressants:

• Are oral medications taken daily
• According to APA, antidepressants can start to help in a week or two, but full effects often take two to three months (2).
• Can cause side effects like weight gain, insomnia, and sexual dysfunction
• Are typically the first treatment doctors prescribe for moderate to severe depression

TMS therapy:

• Delivers magnetic pulses that stimulate specific brain regions, especially the left dorsolateral prefrontal cortex—an area linked to mood regulation
• Is non-invasive, drug-free, and performed in-office
• Causes minimal side effects, typically only mild scalp discomfort or headache
• Doesn’t affect the rest of the body like medications do
• Is widely used when antidepressants don’t work, but it’s increasingly considered earlier in treatment plans

What About Accelerated TMS?

Accelerated TMS is a newer, high-intensity protocol designed for people who need faster relief. Instead of daily sessions over weeks, Accelerated TMS delivers 50 sessions in just 5 days, 10 sessions per day.

• For Major Depression (MDD): Each session is 10 minutes long
• For Generalized Anxiety Disorder (GAD): 4 minutes per session
• For Obsessive-Compulsive Disorder (OCD): 6 minutes per session

This technique has shown promise in rapidly reducing symptoms, often within days rather than weeks. It’s especially helpful for people in crisis or those who haven’t found relief from other treatment formats.

TMS also has no withdrawal symptoms. There’s no tapering off, no rebound effects. Antidepressants, by contrast, often require careful dose reduction to avoid discontinuation symptoms like dizziness, irritability, or flu-like effects.

And finally, TMS can be used alongside medication or as a standalone therapy. It doesn’t interfere with other treatments and may even enhance the effects of antidepressants when used together.

What Does the Research Say About TMS vs Antidepressants?

Recent studies are reshaping how we think about treating depression, especially when medications haven’t worked. Research increasingly supports TMS as not only a safe and effective alternative to antidepressants, but in many cases, a more powerful option.

In a multicenter randomized controlled trial involving individuals with treatment-resistant depression, researchers compared the effects of repetitive transcranial magnetic stimulation (rTMS) to switching to another antidepressant. Every participant had already tried at least two medications without success. Over an 8-week period, one group received 25 rTMS sessions, while the other followed a medication adjustment protocol. Both groups also received psychotherapy.

The findings were clear:

• People treated with rTMS showed a greater overall reduction in depression severity
• Response rates were more than double in the rTMS group (37.5%) compared to the medication group (14.6%)
• Remission was achieved in 27.1% of those receiving rTMS versus only 4.9% of those who switched medications
• TMS also led to larger improvements in anxiety and anhedonia, two symptoms that often persist even when other depressive symptoms ease

These results weren’t subtle. The difference in outcomes between TMS and medication was significant, particularly for individuals who had already attempted and failed standard treatments. For those stuck in a frustrating cycle of medication switches, this study shows that TMS can offer a more effective path to relief (3).

But what about combining TMS with medication?

A separate observational study looked at 100 patients with major depressive disorder receiving theta-burst TMS therapy. Half were on antidepressants during their TMS treatment; the other half were not. Both groups were matched for age, gender, and depression severity, and all received the same number of TMS sessions to the left dorsolateral prefrontal cortex.

The outcome showed no significant differences in response or remission rates between the two groups. Whether patients used TMS alone or in combination with medication, they experienced similar improvements. That means TMS doesn’t need to be an “add-on”. It can serve as a primary treatment, even in the early stages of the care plan (4).

Together, these studies highlight an important shift: TMS isn’t just for when everything else fails. It can work better than a medication switch in resistant cases, and it may be just as effective on its own as when used with antidepressants. 

Can You Do TMS and Take Antidepressants at the Same Time?

Yes, TMS and antidepressants can still be used together.

The two treatments work through entirely different mechanisms:

• Antidepressants modulate neurotransmitters throughout the brain.
• TMS targets a specific region of the brain, the left dorsolateral prefrontal cortex, responsible for mood regulation.

Because they act on different pathways, there’s no pharmacological conflict. They can be safely combined and may even enhance each other’s effects. Some patients find that TMS helps “unlock” the benefits of medication that previously seemed ineffective.

The earlier study on theta-burst stimulation showed no difference in outcomes between patients on TMS alone vs. TMS plus medication. That means TMS can work as monotherapy or as part of a combination strategy, giving patients more options and more flexibility.

Clinically, doctors may:

• Continue current medications during TMS treatment
• Reduce or taper medications if TMS proves effective
• Use TMS as a bridge for patients looking to come off long-term meds

Patients also appreciate that TMS doesn’t come with systemic side effects. So even if someone experiences sexual dysfunction or weight gain from meds, they may still pursue TMS without compounding those issues.

What’s the Verdict: TMS or Antidepressants?

There’s no one-size-fits-all answer, but here’s a breakdown:

For people who’ve struggled with medications or want an alternative path, TMS may be the more effective, sustainable option.

Talk to Us at the TMS Institute of Arizona

We’ve helped countless people regain their energy, clarity, and connection through TMS therapy. Many came to us after years of trying pills that numbed more than they healed. Others came looking for an approach that respects how complex depression really is.

We don’t treat charts. We work with real people. And we take depression seriously.

Our team brings clinical experience, research-backed care, and a commitment to doing what actually helps. Whether you’ve tried everything or you’re just beginning to explore options, we’re here to listen and to act.

Contact the TMS Institute of Arizona today.
Let’s talk about what relief can really look like.

References 

1. Al-harbi. (2012). Treatment-resistant depression: therapeutic trends, challenges, and future directions. Patient Preference and Adherence, 369. https://doi.org/10.2147/ppa.s29716
2. What Is Depression? (2025). Psychiatry.org. https://www.psychiatry.org/patients-families/depression/what-is-depression
3. Dalhuisen, I., Oostrom, I. van, Spijker, J., Wijnen, B., Exel, E. van, Mierlo, H. van, Dieuwertje de Waardt, Arns, M., Tendolkar, I., & Eijndhoven, P. van. (2024). rTMS as a Next Step in Antidepressant Nonresponders: A Randomized Comparison With Current Antidepressant Treatment Approaches. American Journal of Psychiatry, 181(9), 806–814. https://doi.org/10.1176/appi.ajp.20230556
4. Haruki Ikawa, Takeda, Y., Osawa, R., Sato, A., Mizuno, H., & Noda, Y. (2024). A Retrospective Case–Control Study on the Differences in the Effectiveness of Theta-Burst Stimulation Therapy for Depression with and without Antidepressant Medication. Journal of Clinical Medicine, 13(2), 399–399. https://doi.org/10.3390/jcm13020399