The most effective options for treating depression and anxiety together are SSRIs (selective serotonin reuptake inhibitors), which work for both conditions simultaneously. Beyond prescription medications, certain supplements and nutrients also have evidence behind them. The right choice depends on your symptom severity, but most people with moderate to severe symptoms benefit from medication, and many find supplements helpful as an added layer of support.
SSRIs: The Standard Starting Point
SSRIs are typically the first medication prescribed for depression and anxiety because they treat both conditions and have fewer side effects than older alternatives. They work by keeping more serotonin available in the brain, which gradually stabilizes mood and reduces anxious thinking. The most commonly prescribed SSRIs include sertraline, escitalopram, citalopram, fluoxetine, and paroxetine.
Sertraline and escitalopram are particularly popular choices when depression and anxiety overlap. Sertraline is prescribed at doses ranging from 50 to 200 mg daily, while escitalopram typically runs 10 to 20 mg. Your prescriber will usually start at a lower dose and increase gradually based on your response.
One thing that catches many people off guard: SSRIs take time. You may not notice meaningful improvement for two to three weeks, and most treatment guidelines recommend sticking with a medication for six to eight weeks before deciding whether it’s working. That waiting period can feel long when you’re struggling, but it’s the standard timeline for these drugs to reach full effect.
SNRIs and Other Prescription Options
If SSRIs don’t provide enough relief, SNRIs (serotonin-norepinephrine reuptake inhibitors) are a common next step. Venlafaxine is the most widely used SNRI for combined depression and anxiety. These medications affect two brain chemicals instead of one, which can help people who didn’t respond to SSRIs alone.
For anxiety that persists even after depression improves on an SSRI, buspirone is sometimes added as a secondary medication. It specifically targets anxiety and can be used alongside antidepressants. Buspirone is typically started at 15 to 20 mg per day and can be increased up to 60 mg. It’s worth noting that in clinical trials comparing add-on strategies for people who didn’t fully respond to their first antidepressant, buspirone showed modest results, with only about 9% of anxious, depressed patients reaching full remission when it was added.
What Side Effects to Expect
Most antidepressant side effects are front-loaded, meaning they hit hardest in the first few weeks and then fade. Nausea is one of the earliest and usually resolves as your body adjusts. Fatigue, drowsiness, and sleep disruption are also common in the beginning. Dry mouth and constipation can linger longer for some people.
Sexual side effects are the ones most likely to persist. Many antidepressants reduce sex drive, make it harder to reach orgasm, or cause erectile difficulties. These effects don’t always go away on their own, and they’re one of the top reasons people switch medications. Some antidepressants are less likely to cause sexual problems than others, so if this becomes an issue, it’s worth discussing alternatives with your prescriber.
A somewhat ironic early side effect: some antidepressants temporarily increase restlessness or anxiety before they start helping. This is a known stimulating effect that typically settles within the first couple of weeks.
Supplements With Evidence Behind Them
Several supplements have research supporting their use for mood, though none are as potent as prescription medications for moderate to severe symptoms. They can be useful for mild cases or as additions to a medication regimen.
Omega-3 fatty acids have the strongest supplement evidence for depression. The key is the type: preparations with at least 60% EPA (one of the two main omega-3 fats) relative to DHA appear most effective. Harvard Health recommends 1 to 2 grams daily of combined EPA and DHA for major depression. Not all fish oil supplements have the right ratio, so check the label for the EPA and DHA breakdown rather than just the total fish oil amount.
Vitamin D deficiency is linked to higher rates of depression, and supplementation may help if your levels are low. Many people, especially those in northern climates or who spend limited time outdoors, fall short. A blood test can confirm whether you’re deficient.
Magnesium plays a role in brain chemistry related to mood, and dietary intake is often inadequate. Research has connected low magnesium intake with increased depressive symptoms. Supplementing is generally safe and inexpensive, though it’s most likely to help if you’re actually deficient rather than as a standalone treatment.
Vitamin B6 also appears in the research on mood. Intakes above 2 mg daily have been associated with fewer depressive symptoms in population-level studies.
St. John’s Wort: Effective but Risky
St. John’s Wort is an herbal supplement that has performed roughly as well as SSRIs in trials for mild to moderate depression. A review of 29 international studies found it was more effective than placebo and comparable to standard antidepressants for these severity levels. For severe depression, the evidence is much weaker.
The serious problem with St. John’s Wort is drug interactions. It interferes with a long list of medications, including antidepressants, birth control pills, blood thinners, certain heart medications, HIV drugs, some cancer treatments, and opioid pain medications. Combining it with antidepressants is particularly dangerous because it can cause a life-threatening buildup of serotonin. If you’re taking any prescription medication, St. John’s Wort is not a casual add-on. Treat it with the same caution you’d give a prescription drug.
Stopping Medication Safely
If you eventually decide to come off an antidepressant, tapering slowly is essential. Stopping abruptly can trigger discontinuation syndrome, which includes dizziness, flu-like symptoms, irritability, anxiety, and a distinctive sensation people describe as “brain zaps” or electric shock feelings in the head. These symptoms are physically uncomfortable and easily mistaken for a relapse of the original condition.
A safe taper typically involves reducing your dose in small increments with two to six weeks between each reduction. People who stop rapidly, over just one to seven days, are significantly more likely to relapse within a few months compared to those who taper gradually over at least two weeks. This is a process to plan with your prescriber rather than manage on your own, especially if you’ve been on medication for a long time.
Combining Approaches
Medication and supplements work best as part of a broader approach. Cognitive behavioral therapy has strong evidence for both depression and anxiety, and combining it with medication tends to produce better outcomes than either one alone. Regular aerobic exercise, consistent sleep, and reducing alcohol also have measurable effects on both conditions. None of these replace medication when symptoms are moderate to severe, but they build a foundation that makes everything else work better.