Supplements won't cure anxiety on their own — but as part of a holistic approach, certain nutrients and botanicals have genuine evidence behind them. Here's an honest overview.
This is one of the topics we receive the most questions about. And understandably so — when you're struggling with anxiety, you want to explore every avenue. Supplements are worth exploring, but with clear eyes: they work best when viewed as one component of a broader approach, not a standalone solution.
What follows is a balanced overview of the supplements with the most evidence or the most commonly reported benefit. As always, consult your doctor or pharmacist before adding supplements to your routine, particularly if you take medication.
Important: Supplements can interact with medications and are not regulated as rigorously as pharmaceuticals. Always discuss with a healthcare professional before starting any new supplement, particularly if you are pregnant, breastfeeding, or managing a health condition.
One of the most widely discussed supplements for anxiety, and with good reason. Magnesium plays a key role in nervous system regulation, and deficiency — which is surprisingly common — is associated with increased anxiety, poor sleep, and muscle tension. Magnesium glycinate or citrate forms tend to be better absorbed than magnesium oxide.
Multiple studies have found associations between omega-3 intake and reduced anxiety symptoms. EPA and DHA — found in oily fish and fish oil supplements — appear to have anti-inflammatory effects in the brain that may support mood regulation. A good quality fish oil supplement is one of the more evidence-backed options available.
An amino acid found naturally in green tea, L-theanine promotes relaxation without sedation. It appears to increase alpha brain wave activity — associated with a calm, alert state — and is often used to take the edge off caffeine. Well tolerated and available widely as a supplement.
Clinical studies have found passionflower extract to be comparably effective to some conventional anti-anxiety medications for generalised anxiety, with fewer side effects. It is thought to work via GABA pathways in the brain — similar to benzodiazepines, but much more gently.
The B vitamin family — particularly B6, B9 (folate) and B12 — plays an important role in neurotransmitter production and nervous system function. Deficiencies can contribute to anxiety, low mood, and fatigue. A good quality B-complex supplement covers the bases if dietary intake is uncertain.
Both minerals are involved in brain function and immune regulation. Lower zinc levels have been associated with anxiety and depression in some studies. Selenium, found in Brazil nuts and seafood, supports thyroid function — and thyroid imbalances can significantly affect anxiety levels.
Mild dehydration is a surprisingly common and easily overlooked contributor to anxiety symptoms — headaches, difficulty concentrating, irritability, and increased heart rate can all be worsened by insufficient hydration. Before reaching for anything more complex, make sure you're drinking enough water consistently throughout the day.