Whether it’s pressure-packed meetings, financial stress, or any of the other responsibilities on your proverbial plate, feeling overwhelmed by everything life throws your way can make supplements for anxiety an appealing option. First, a word of caution: Supplements are only one piece of the puzzle, and they’re certainly not a replacement for professional medical care when it’s needed.
However, if you're looking for ways to better manage everyday stress and anxious feelings, several science-backed supplements may help support resilience when combined with exercise, good nutrition, quality sleep, and effective stress-management practices. In this article, I’ll focus on five options with research that supports their efficacy. I’ll also point out a few popular supplements and give you a practical game plan to build an effective stack.
After all, living with chronic stress isn’t a recipe for physical, mental, or emotional well-being. So, let us give you insight into the ingredients that can help support those pillars of health.
Key Takeaways
The supplements with the most evidence for supporting a healthy stress response are ashwagandha, L-theanine, magnesium, omega-3s, and vitamin D (if you're low).
L-theanine works acutely, usually within 30 to 60 minutes. Ashwagandha and magnesium build over 4 to 8 weeks of consistent use. A combined stack covers both timelines.
Magnesium glycinate is the form most associated with relaxation and sleep, dosed at 200 to 400 mg per day.
Supplements support stress management, but they don't replace it. Sleep, exercise, and stress-reducing routines still drive the biggest changes.
Persistent or severe anxiety, panic attacks, or anxiety affecting daily function warrant a healthcare provider visit. Supplements are not a substitute for clinical care.
As always, consult with your healthcare provider before starting any new supplement or nutrition program, especially if you are pregnant, nursing, taking medication, or have a medical condition.
Table of Contents
- Can Supplements Help With Anxiety?
- Ashwagandha: The Most-Studied Adaptogen for Stress
- L-Theanine: Calm Focus Without Drowsiness
- Magnesium: The Mineral Most People Are Low In
- Omega-3, Vitamin D, and B Vitamins
- What About Kava, CBD, and 'Calm Gummies'?
- How to Build a Supplement Stack for Stress
- When to See a Healthcare Provider
Can Supplements Help With Anxiety?
Some supplements may help support a healthy stress response and ease everyday anxious feelings, but they are not treatments for clinical anxiety disorders. The most evidence-supported options work alongside lifestyle changes, not as substitutes for them.
What Supplements Can and Can’t Do
Certain nutrients and compounds can influence everything from neurotransmitters (your body’s chemical messengers) to your stress hormones to your sleep quality. However, supplements are by no means a “cure” for anxiety. For people with diagnosed anxiety disorders, treatment often involves therapy, medication, or a combination of both, depending on the specific case.
One reason supplements may be helpful is that some can support your body's response to stress, including pathways involving cortisol. If you're unfamiliar with what cortisol is and how it works, it's often referred to as the body's primary stress hormone and plays a major role in regulating energy and your response to physical and psychological stress.
The best way to look at supplements is as supportive tools. They may make relaxation a bit easier, but they won’t replace addressing issues such as chronic sleep deprivation or unresolved stressors.
When Supplements Fit Your Routine
For most adults, supplements can easily fit into a broader stress-management approach that includes lifestyle habits like exercise, a well-balanced diet, and quality sleep. In particular, they can be helpful for addressing specific gaps, such as low magnesium intake or a vitamin D deficiency (both of which are common).
Remember: focus on the fundamentals first. For example, learning how to lower cortisol levels naturally can have a huge impact on your mental well-being.
When to See a Healthcare Provider
There are instances where you may need to seek professional help. If you have persistent anxiety that interferes with work, relationships, and your overall functioning, supplements are not the answer. Instead, you should consult with a healthcare provider to address some of the root causes and find an appropriate solution.
Ashwagandha: The Most-Studied Adaptogen for Stress
Ashwagandha, especially the KSM-66 and Sensoril extracts, has the most clinical evidence behind it for supporting a healthy stress response. Most trials use 300 to 600 mg per day of standardized root extract, with full benefits typically appearing after 6 to 8 weeks.
What the Research Shows
Before diving into the research, it's important to understand what ashwagandha is: an adaptogenic herb that has been used for centuries in Ayurvedic medicine to help the body adapt to stress. According to a 2021 systematic review that examined seven studies, ashwagandha significantly reduced stress and anxiety levels, reduced sleeplessness and fatigue, and reduced serum cortisol levels (our stress hormone) (1). In those studies, participants experienced greater benefits with doses of 500-600mg/day more than lower doses that fell closer to 240 mg.
KSM-66 vs. Sensoril
The two most popular forms of ashwagandha are KSM-66 root extract and Sensoril root-and-leaf extract. The former is produced via a unique extraction process that doesn’t include alcohol or synthetic solvents. The latter utilizes both the root and the leaf, resulting in a higher percentage of active compounds (about 10% compared to 5% for KSM-66).
Dose and Timeline
The dose depends on the form. For KSM-66, the typical dose ranges between 300-600 mg/day, with one 2012 study showing that 600 mg/day contributed to significant stress and anxiety symptom reductions (2).
On the other hand, the higher concentration of active compounds in Sensoril means you don’t need as high of a dose. Many Sensoril-based supplements provide about 125-250 mg/day. And no matter which form you choose, you’ll need to take it for about 8 weeks to experience the benefits. For a full breakdown of forms, timing, and how to dial in your amount, see our complete ashwagandha dosage guide.
Who Should Be Cautious
While ashwagandha is generally safe for most people, there are a few instances where you should proceed with caution. If you are pregnant or nursing, have thyroid or autoimmune conditions, or are taking medications for blood pressure management or diabetes, you should speak to your healthcare provider before making ashwagandha part of your stack.
L-Theanine: Calm Focus Without Drowsiness
L-theanine is an amino acid found in green tea that promotes a state of calm, focused alertness within 30 to 60 minutes. Typical doses range from 100 to 400 mg, and it pairs well with caffeine for daytime use or ashwagandha for broader stress support.
How L-theanine Works (Alpha Brain Waves and Neurotransmitters)
L-theanine has been shown to increase alpha-wave activity, promoting relaxation without causing drowsiness. In fact, a 2021 study investigating the efficacy of a single dose of an L-theanine supplement on stress in healthy adults found that it significantly increased frontal region alpha power, which led to a calm but mentally focused state (3).
In addition, L-theanine affects the neurotransmitter systems involved in mood and stress regulation. Specifically, it may help influence levels related to GABA, dopamine, and serotonin, all of which play critical roles in promoting relaxation, mental focus, and emotional well-being (4).
Acute vs. Daily Use
Unlike ashwagandha, which requires long-term use to experience its benefits, L-theanine can have more of an “instant” impact. Some people take 100-200 mg before a stressful situation (such as a big presentation or job interview) to help promote a sense of calmness.
Meanwhile, others may use it for daily support by splitting a larger dose (200-400 mg) into two doses. Neither is inherently better than the other; it comes down to personal preference and your stress-support needs.
Stacking L-Theanine with Ashwagandha or Caffeine
A popular practice is to combine L-theanine with caffeine. This allows you to reap the energetic benefits while taking advantage of L-theanine’s ability to curb the jitters often associated with caffeine consumption.
Another strategy is to pair L-theanine with ashwagandha for well-rounded support. The former can work well in the short term, especially if you have a particularly stressful event on your calendar. The latter can support long-term resilience.
Magnesium: The Mineral Most People Are Low In
Magnesium plays a role in nervous system function and the body's stress response, and most American adults don't get enough from diet alone. Magnesium glycinate is the form most associated with relaxation and sleep, dosed at 200 to 400 mg per day.
Why Magnesium Matters for Stress
Considering it’s involved in literally hundreds of biological processes, it should be no surprise that magnesium has an impact on your stress levels. This key mineral helps regulate stress hormones like cortisol, and when you’re deficient, it can open the door to a frustrating cycle of increased stress and decreased sleep quality (5).
One of the benefits of magnesium is its role in supporting the nervous system and helping your body maintain a healthy stress response. Because stress and sleep are intimately connected, getting sufficient magnesium can put you in a better position for better quality sleep, and if rest is your weak point, that guide is worth a read on its own.
Magnesium Glycinate vs. Citrate vs. Oxide
Magnesium comes in several forms, each with different intended uses, absorption rates, and digestive side effects. Here’s a high-level overview of three of the more common ones:
- Glycinate: Used to promote calm, sleep, and muscle relaxation. It’s gentle on the stomach, making it best-suited for daily supplementation.
- Citrate: Used to relieve constipation symptoms. It’s highly absorbable, but it also acts as an osmotic laxative by pulling water into the intestines to promote bowel movements.
- Oxide: Similar to citrate, it’s commonly used to relieve constipation and reduce heartburn and acid indigestion.
Overall, glycinate should be your go-to if you’re looking for stress support. Citrate and oxide are generally better-suited for constipation issues.
Best Time to Take Magnesium
Most folks prefer taking magnesium glycinate in the evening because it can help promote relaxation. This is my personal preference for setting myself up for a restful night’s sleep. However, if magnesium causes GI issues, you may be better served splitting the dose between the afternoon and evening.
Omega-3, Vitamin D, and B Vitamins
Omega-3 fatty acids (EPA/DHA), vitamin D (if you're deficient), and B vitamins all play supportive roles in mood and stress management. These are foundational additions to a stress-support stack rather than acute interventions.
Omega-3s and Mood Support
Omega-3 fatty acids may be closely associated with heart health, but EPA and DHA may also impact your mood. A 2019 meta-analysis showed a beneficial effect of omega-3 fatty acids on depression symptoms (6).
Now let me be clear: That doesn’t mean a fish oil supplement is going to make stress disappear. However, omega-3s are a foundational nutrient that can positively impact your heart health and mental well-being.
Vitamin D: Correct, Don’t Megadose
It’s no secret that we spend far less time outdoors than our ancestors. Between a lack of sunlight and our diets, many adults are deficient in vitamin D.
However, rather than going overboard to try and make up for this gap, your goal should be to correct the deficiency. You can get basic blood work done to determine your vitamin D levels, which will then allow you to take a targeted approach to supplementation based on your specific needs.
B Vitamins and Chronic Stress Depletion
B vitamins support energy metabolism (the process your body uses to convert food into ATP), nervous system function, and neurotransmitter production. However, during periods of chronic stress, disrupted sleep, or inadequate nutrition, it’s easy to become deficient.
In particular, vitamins B6 and B12 play important roles in stress resilience. B6 helps produce neurotransmitters such as serotonin, dopamine, and GABA—all of which influence mood and emotional well-being. Meanwhile, vitamin B12 supports nervous system function and energy production, which can help combat the fatigue that’s often associated with chronic stress.
What About Kava, CBD, and 'Calm Gummies'?
Kava has shown anxiolytic effects in research but raises liver-safety concerns. CBD has emerging evidence but suffers from inconsistent product quality. 'Calm gummies' are typically underdosed and not worth the price compared to standalone ingredients at clinically supported doses.
Kava: Efficacy vs. Safety
Kava is a psychotropic plant medicine that’s become a popular method for dealing with anxiety symptoms. However, while evidence supports its efficacy, there are legitimate safety concerns to keep in mind, as products labeled as kava have been linked to the development of an acute liver injury that can be fatal (7).
Because more research is needed, it’s important to weigh the potential benefits against the possible risks and discuss kava supplementation with a qualified healthcare provider.
CBD: What the Evidence Really Says
The research surrounding CBD and stress is promising, as there’s plenty of anecdotal evidence that supports its use for relaxation. In addition, results from a 2023 study support some of its anti-stress effects (8).
However, one of the drawbacks of CBD is the inconsistent product quality. For example, the actual CBD content can differ from what’s on the label, or some products may contain THC or other contaminants. So, if this is the route you choose, make sure that the product comes from a reputable manufacturer with third-party testing certification.
Why Most Calm Gummies Disappoint
As another emerging category, “calm” gummies typically contain beneficial ingredients like L-theanine and magnesium. Unfortunately, many are underdosed, meaning you’re paying a premium for convenience but not necessarily getting a good bang for your buck.
As is the case with any supplement, you need to pay close attention to the label to see exactly how much of each ingredient you’re getting.
How to Build a Supplement Stack for Stress
A balanced stress-support stack typically includes one acute option (L-theanine for in-the-moment calm), one consistent adaptogen (ashwagandha for longer-term resilience), and the foundational nutrients most people are low in (magnesium, omega-3, vitamin D).
Adrenal Restore is a multi-adaptogen blend that’s formulated to provide stress-response support in one daily formula*. Let’s explore each layer a little further.
The Acute Layer
Think of L-theanine as the “here and now” part of your stress-support arsenal. Take 100-200 mg as needed before a big meeting, social event, or when you need to buckle down and be ultra-productive on deadline.
The Consistent Layer
The best ashwagandha supplements offer daily support, as long as you take them consistently. A standardized extract such as KSM-66 or Sensoril taken for at least 6 to 8 weeks can allow you to reap the rewards we outlined above.
The Foundational Layer
Finally, you can’t forget about the basics. You need to prioritize vitamin D, omega-3s, and magnesium glycinate, as all three play key roles in keeping you balanced and functioning at your best. Here’s how this layer should look:
- Vitamin D: Many clinicians target between 40 to 60 ng/mL, but get your bloodwork done so you know your levels.
- Omega-3s: 1-2 g/day combined EPA+DHA
- Magnesium Glycinate: About 200-400 mg/day
While it’s best to get the majority of your nutrients from whole-food sources like fatty fish, eggs, leafy greens, nuts, and seeds, supplementation can help fill the gaps. When these fundamentals are in place, the rest of your stress-support stack has a stronger foundation to build upon.
How Long Until You Know It’s Working
Each component outlined above has its own timeline for effectiveness. For example, L-theanine has more of an immediate impact, as you’ll know it’s working within 30 to 60 minutes. Other parts of your stress-support stack take more time, as you’ll need at least six weeks for ashwagandha supplementation to take root.
Overall, I recommend giving your stack at least 4 to 8 weeks before deciding whether it’s the right combination. Of course, if you experience any adverse side effects, feel empowered to make adjustments.
When to See a Healthcare Provider
Persistent or severe anxiety, panic attacks, anxiety that interferes with daily life, anxiety paired with depression, or anxiety with physical symptoms like chest pain or shortness of breath all warrant a healthcare provider visit. After all, supplements are not a substitute for clinical care.
Warning Signs That Need a Clinician
If you care about your long-term health, you can’t afford to ignore these red flags. If you experience any of these issues, contact a clinician immediately:
- Panic attacks
- Thoughts of self-harm
- Severe sleep disruption
- Chest pains, palpitations, or shortness of breath
- Anxiety that prevents normal daily functioning
How to Talk to Your Provider About Supplements
Keep track of everything you currently take, including what type of supplement, the exact dosage, and any medications. That last part is especially important, as your doctor can make you aware of any potential interactions between supplements and other medications. This is particularly relevant if you use antidepressants, anti-anxiety medications, blood pressure medications, or diabetes medications.
What Therapy and Medication Can Offer
For many people, cognitive behavioral therapy (CBT), other evidence-based therapies, and/or medication can provide substantial relief that supplements simply can’t do alone. These options can help address underlying thought patterns (such as negative self-talk), behaviors, and other factors that may be contributing to ongoing anxiety.
As much as you may want to fix things yourself or look at supplements as the answer, there’s nothing wrong with relying on professional assistance when it comes to your mental health.
Conclusion
While supplements can support a healthy stress response, they’re by no means a quick fix or a replacement for the non-negotiables like regular exercise, adequate nutrition, quality sleep, and stress-management practices like meditation, yoga, and journaling. Think of them as just one tool in your toolbox rather than the one tool to rule them all.
Out of all the supplements at your disposal, several stand out for their ability to support stress management. Ashwagandha, L-theanine, magnesium glycinate, omega-3s, and vitamin D have the strongest evidence supporting their efficacy.
Adrenal Restore contains not only ashwagandha but also other adaptogenic ingredients like rhodiola to help maintain overall balance. And you can also explore other 1st Phorm hormone support supplements for additional options like Harmony, which is designed to support hormonal balance and help women achieve better health and well-being. While it contains only a modest 75 mg of caffeine per serving, those who are especially sensitive to caffeine should factor that into their decision.
Most importantly, though, if your symptoms go beyond the general stress we all face, don’t be afraid to speak with a healthcare provider. Supplements can be part of your plan, but they’re not a substitute for clinical care when anxiety becomes detrimental to your well-being. It may be easy to get discouraged, but just know that there are resources available to help you get moving in the right direction.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Frequently Asked Questions
What is the best vitamin for anxiety and stress?
There isn’t a single “best vitamin” for everyone. However, vitamin D and B vitamins are among the most helpful, as many adults are deficient in the former and could use more of the latter for energy and nervous system support, especially during periods of chronic stress.
Does magnesium really help with anxiety?
Magnesium can help support relaxation and stress management, particularly if you’re not getting sufficient amounts through your diet. This makes magnesium glycinate a common choice for its relaxation and sleep-supporting properties.
How long does it take ashwagandha to work for anxiety?
Most clinical studies show it takes about 6 to 8 weeks of consistent use to experience the benefits of ashwagandha.
Can supplements replace anxiety medication?
No, supplements are by no means a substitute for prescribed treatment. If you have diagnosed anxiety or significant symptoms, work with your healthcare provider before making any changes to your medication routine.
What's the best time of day to take stress supplements?
That depends on the supplement. For example, most people take magnesium glycinate in the evening to help relax before bed. On the other hand, many recommend taking L-theanine shortly before a stressful event. Ultimately, there’s no one-size-fits-all approach since each type of stress supplement interacts with your body differently.
References
(1) National Institutes of Health Office of Dietary Supplements. (2025). Ashwagandha: Fact sheet for health professionals. U.S. Department of Health and Human Services. https://ods.od.nih.gov/factsheets/Ashwagandha-HealthProfessional/
(2) Chandrasekhar, K., Kapoor, J., & Anishetty, S. (2012). A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian journal of psychological medicine, 34(3), 255–262. https://doi.org/10.4103/0253-7176.106022
(3) Evans, M., McDonald, A. C., Xiong, L., Crowley, D. C., & Guthrie, N. (2021). A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population. Neurology and therapy, 10(2), 1061–1078. https://doi.org/10.1007/s40120-021-00284-x
(4) Deshpande, S. S., Kurdi, M., Baiju, A., Athira, A. S., Sarasamma, A. G., & Gangadharan, A. K. (2025). Comparison of the effects of two amino acids, Gamma-aminobutyric acid (GABA) and L-theanine, on sedation, anxiety, and cognition in preoperative surgical patients - A randomized controlled study. Journal of anaesthesiology, clinical pharmacology, 41(1), 112–118. https://doi.org/10.4103/joacp.joacp_417_23
(5) Pickering, G., Mazur, A., Trousselard, M., Bienkowski, P., Yaltsewa, N., Amessou, M., Noah, L., & Pouteau, E. (2020). Magnesium Status and Stress: The Vicious Circle Concept Revisited. Nutrients, 12(12), 3672. https://doi.org/10.3390/nu12123672
(6) Liao, Y., Xie, B., Zhang, H. et al. Efficacy of omega-3 PUFAs in depression: A meta-analysis. Transl Psychiatry 9, 190 (2019). https://doi.org/10.1038/s41398-019-0515-5
(7) National Institute of Diabetes and Digestive and Kidney Diseases. (2012– ). LiverTox: Clinical and research information on drug-induced liver injury [Internet]. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.ncbi.nlm.nih.gov/books/NBK548637/
