Supplements may offer support for some stress or anxiety symptoms, but their usefulness depends on the ingredient and the reason symptoms are occurring. Magnesium, ashwagandha, L-theanine, and other options have all been studied, though the strength of evidence varies.
“Some supplements do show measurable effects on stress and anxiety symptoms, but the evidence varies a great deal by ingredient,” explains Dr. Taz Bhatia. The body’s stress response involves interconnected hormonal and nervous-system pathways, including the HPA axis, which helps regulate cortisol (1).
At hol+, supplements are considered within a broader whole-person plan that looks at possible contributors such as sleep, nutrient status, medications, and underlying health conditions.
Supplements may complement an individualized treatment plan, but they should not take the place of appropriate medical or mental health care for persistent or worsening anxiety.
Supplements for Stress and Anxiety at a Glance
The best supplements for anxiety or stress cannot be reduced to one ranked list. Studies use different preparations, doses, populations, and outcomes, and findings related to stress do not always translate into treatment for an anxiety disorder.
| Supplement | Potential role | Evidence overview | Main considerations |
| Magnesium | Nutrient adequacy, relaxation, mild anxiety or sleep symptoms | Some supportive evidence, but studies vary substantially (2,3) | Kidney function, medication interactions, GI effects |
| Ashwagandha | Perceived stress and sleep | Some preparations may help with stress and insomnia (4) | Thyroid and autoimmune conditions, pregnancy, liver concerns |
| L-theanine | Relaxation and acute stress | Modest acute-stress effects, with inconsistent anxiety findings (5) | Product quality, medications, differences between short- and longer-term use |
| Rhodiola | Stress-related fatigue | Evidence remains limited (6) | Insomnia, headache, medication interactions |
| Holy basil | Perceived stress | Preliminary evidence (7) | Medication interactions, limited long-term data |
| Omega-3s | Possible anxiety symptom support | Possible benefit, but evidence certainty is very low (8) | Dose, formulation, medication use |
Dietary supplements are not approved by the FDA for safety and effectiveness before they reach the market (9). For persistent or function-limiting anxiety, established treatment options include psychotherapy and, when appropriate, medication (10).
Products marketed as cortisol supplements still need to be evaluated ingredient by ingredient.
From Brain to Body: How the Stress Response Works
The stress response involves both nervous-system and hormonal pathways. The HPA axis helps regulate cortisol, while the sympathetic nervous system contributes to the faster adrenaline response. Cortisol normally follows a daily rhythm and helps the body adapt to physical and psychological demands (1).
Persistent stress can affect sleep, energy, digestion, and other aspects of health, but the pattern is more complex than simply “high cortisol” followed by a crash. Symptoms alone cannot determine cortisol levels, so a systems-based medicine approach looks at the broader clinical picture rather than assuming cortisol is the cause.
How Stress May Show Up Across the Body
Stress does not always appear as obvious panic or worry. Some people first notice changes in sleep, concentration, energy, digestion, or physical tension.
“Most people don’t notice stress. They notice the sleep, the stomach, and the short fuse, and blame themselves for all three.”
Possible patterns include:
- Mood and focus: Irritability, persistent worry, racing thoughts, or difficulty concentrating
- Sleep and energy: Trouble falling or staying asleep, fatigue, or feeling tired but restless
- Physical symptoms: Headaches, muscle tension, appetite changes, palpitations, or digestive discomfort
- Other changes: Shifts in libido, menstrual symptoms, or skin concerns that become more noticeable during high-stress periods
At hol+, cortisol hum describes persistent background stress rather than a formal diagnosis or confirmed cortisol abnormality.
These symptoms are nonspecific and may also occur with medical or mental health conditions. As Dr. Taz Bhatia explains, “assuming it’s the only explanation is how real conditions get missed.”
Supplements Commonly Considered for Stress and Anxiety
Different supplements may support stress or anxiety in different ways, but the evidence is stronger for some than others. The right choice depends on the symptom pattern, health history, and reason for using it.
Magnesium for Stress and Anxiety
Magnesium supports normal nerve and muscle function, and a 2024 review found possible benefits for anxiety or sleep symptoms, although larger trials are still needed (2).
Magnesium glycinate is often marketed for relaxation, although it has not been established as uniquely effective for anxiety. Supplemental magnesium can also cause gastrointestinal side effects or interact with certain medications, and people with impaired kidney function should seek medical guidance before using it (3).
Ashwagandha for Stress Support
Ashwagandha is one of the better-studied adaptogens for stress. NCCIH reports that some preparations may help with perceived stress and insomnia, although evidence for anxiety remains unclear and different extracts may not produce the same effects (4).
Long-term safety is uncertain, and rare liver injuries have been reported. NCCIH advises avoiding ashwagandha during pregnancy and breastfeeding and does not recommend it for people with thyroid or autoimmune disorders (4).
See also: Ashwagandha vs. L-Theanine
L-Theanine for Relaxation and Acute Stress
L-theanine is an amino acid found naturally in tea and commonly used in stress-support supplements. A 2026 meta-analysis found a modest effect on acute stress, although this finding was influenced by higher-risk studies and anxiety results were inconsistent (5). These findings should not be interpreted as evidence that L-theanine treats an anxiety disorder.
That makes it more appropriate to discuss as a possible stress-support option than as an established treatment for an anxiety disorder.
Rhodiola for Stress-Related Fatigue
Rhodiola is often marketed for stress-related fatigue and mental performance, but NCCIH concludes that there is not enough reliable research to establish a health benefit (6).
Possible side effects include headache or dizziness, while some people may experience insomnia or dry mouth. Medication interactions are another reason to use it cautiously.
Holy Basil, Omega-3s, and Other Options
Holy basil has preliminary research suggesting possible benefits for perceived stress, but the evidence base remains small (7).
Omega-3 fatty acids have also been studied for anxiety symptoms. A 2024 meta-analysis found a possible benefit, although the authors rated the overall evidence as very low certainty (8). Chamomile and certain oral lavender preparations have also been studied for anxiety, although the evidence remains preliminary or limited by study quality (11).
Eleuthero has a thinner evidence base and should not be presented as an established treatment for stress or anxiety.
Why the Right Supplement Depends on the Person
Vitamin D, B vitamins, magnesium, and other nutrients are sometimes promoted as universal stress remedies, but supplementation makes more sense when there is a specific reason to use it.
Dr. Taz Bhatia notes that supplements are most reasonable when there is a specific reason to use them, especially when a documented nutrient deficiency can be corrected directly. Persistent or worsening anxiety deserves broader evaluation rather than simply adding another supplement.
When to Talk With a Clinician Before Taking a Stress or Anxiety Supplement
“Natural” does not automatically mean safe. Supplements can interact with medications and may be inappropriate for certain health conditions.
Extra guidance is particularly important for people who:
- Take antidepressants, sedatives, thyroid medication, blood thinners, diabetes medication, or several medications
- Have kidney, liver, thyroid, autoimmune, or bleeding conditions
- Are preparing for surgery
- Are pregnant, trying to conceive, or breastfeeding
- Are considering supplements for a child or adolescent
- Have anxiety that is persistent, worsening, or interfering with everyday life
FDA advises consumers to discuss dietary supplements with a physician or other healthcare professional (9).
Product quality matters as well. Clearly disclosed ingredient amounts, appropriate botanical standardization, and reputable third-party testing can make it easier to understand what a product actually contains.
A Smart Blend That Brings It All Together
HPA Adapt by Integrative Therapeutics combines several of the botanicals discussed above, along with maca.
Combination formulas can be convenient, but they can also make it harder to adjust individual ingredients or identify the cause of a benefit or side effect. For that reason, they are best considered with the person’s health history and current medications in mind.
How hol+ Approaches Stress and Anxiety
At hol+, functional medicine for anxiety and persistent stress symptoms begins with understanding the broader clinical picture rather than assuming that cortisol is the cause.
Clinical Evaluation and Targeted Testing
A physician may start with the symptom pattern and medical history, then look more closely at factors such as sleep, nutrition, and medication use.
Dr. Taz Bhatia describes the process as looking at possible contributors such as thyroid function, iron and B12 status, sleep quality, medications, blood sugar patterns, and mental health history “before deciding that stress is the answer.”
Testing is selected to answer a specific clinical question rather than follow a standard stress panel. Someone experiencing symptoms such as fatigue or poor sleep, for example, may need evaluation for another underlying condition before cortisol testing is considered.
The first question is what conditions could reasonably explain the symptom pattern and which tests, if any, would change the treatment plan.
“Root-cause work isn’t about avoiding conventional treatment. It’s about making sure we know what we’re treating.”
Personalized Treatment Planning
Doctor-led holistic care may include targeted supplementation when there is a clear reason for it. Depending on the patient, treatment may also address nutrition and sleep or involve psychotherapy and medication management.
Functional medicine can help coordinate these approaches while still recognizing when a patient needs conventional mental health treatment.
Lifestyle and Integrative Support
Depending on the patient’s needs, care may also include nutrition counseling or health coaching. Movement and acupuncture can be incorporated when appropriate.
The goal is personalized medicine based on the person’s actual symptoms and history rather than assigning the same stress protocol to everyone who feels anxious, tired, or overwhelmed.
Everyday Habits That Support Stress Recovery
Daily habits can influence how stress affects sleep, energy, and recovery.
Some of the most useful areas to consider include:
- Movement: Regular physical activity can support mood and sleep. Recovery matters too, especially during periods of heavy physical or psychological stress.
- Sleep: A consistent schedule and lower evening light exposure can support the body’s normal sleep-wake rhythm.
- Relaxation practices: Meditation, breathing exercises, and other structured stress-management techniques may help reduce perceived stress for some people.
- Nutrition: Regular meals, adequate hydration, and attention to caffeine or alcohol can reduce avoidable contributors to jitteriness, energy swings, and poor sleep.
- Mental health care: Persistent anxiety deserves appropriate treatment rather than an increasingly complicated supplement routine.
Cognitive behavioral therapy is a well-established treatment for generalized anxiety disorder, and medication may also be appropriate depending on the person (10).
Lifestyle measures and natural supplements for anxiety may complement that care, but they should not delay evaluation when anxiety is affecting work, sleep, relationships, or everyday functioning.
A More Personalized Path to Stress Resilience
The right approach to supplements for stress and anxiety depends on what is being treated and why. A supplement that makes sense for one person may be unnecessary or inappropriate for another. Looking at signal vs. static can help separate a possible nutritional or stress-related pattern from symptoms that deserve a different kind of evaluation.
“Anxiety is highly treatable. That’s not encouragement; it’s just true, and too few people hear it.”
If stress or anxiety continues to affect daily life, hol+ can help evaluate the broader picture and build an individualized plan that addresses the most relevant contributors.
FAQs
What are the best supplements for stress and anxiety?
There is no single best option for everyone. Magnesium, ashwagandha, L-theanine, omega-3 fatty acids, and several botanicals have been studied, but the quality and strength of the evidence differ.
The reason for taking the supplement matters too. Correcting a documented nutrient deficiency is different from using a botanical for mild situational stress, and neither is the same as treating an anxiety disorder.
Can supplements for stress and anxiety be taken long-term?
It depends on the supplement. Nutrients and botanical extracts have different safety profiles, and long-term research is limited for some products.
For example, NCCIH says there is not enough information to determine the long-term safety of ashwagandha (4).
Long-term use should therefore be reviewed periodically, particularly when medications or health conditions are involved.
How quickly do supplements for stress and anxiety work?
There is no universal timeline. Some studies measure responses after a single dose, while others evaluate changes after several weeks of regular use.
Timing depends on the supplement, formulation, symptom being studied, and reason it is being used. Claims that a particular supplement should work within hours or a set number of days are generally too broad.
Can supplements replace therapy or anxiety medication?
Supplements should not be viewed as replacements for evidence-based treatment of an anxiety disorder.
Psychotherapy and medication are established treatments for generalized anxiety disorder. Cognitive behavioral therapy is among the best-studied forms of psychotherapy for GAD (10).
Supplements may sometimes complement treatment, but persistent or function-limiting anxiety should be evaluated by an appropriate healthcare or mental health professional.
How does hol+ decide which supplements may be appropriate?
hol+ physicians first consider what may be driving the symptoms. Medical history and medication use can then help determine if supplementation makes sense.
Testing may also help when symptoms or medical history raise concern for a nutrient deficiency or another underlying condition. The goal is to use a supplement for a specific clinical reason rather than matching every symptom to an adaptogen.
Can hol+ test me to find out which supplements I need?
There is no universal laboratory panel that determines which stress supplement someone needs.
A physician may recommend testing when the symptom pattern or clinical history suggests that it could clarify the diagnosis or guide treatment. Testing should answer a clinical question rather than function as a standard stress or anxiety panel.
