Elderberry has gone from grandma’s cupboard to the checkout aisle. The research behind it is real, but small. Here is what it can reasonably be expected to do, and where the evidence runs out.
Written by Vita Globe Editorial Team | Reviewed against NIH guidance, systematic reviews and randomized controlled trials
What is elderberry good for?
Elderberry’s main use is for cold and flu symptoms. A small meta-analysis of randomized trials (180 people in total) found that elderberry reduced upper respiratory symptoms compared with placebo[1], and the NIH describes this as preliminary research suggesting elderberry may relieve symptoms of flu, colds or other upper respiratory infections[2]. There isn’t enough information to show it helps with any other health purpose[2].
Caveat: The trials are few and small, and one of the more recent, carefully designed flu trials found no benefit at all[3].
Sources: Hawkins et al., 2019 · NCCIH · Macknin et al., 2020 · Verified 2026-09-27
IN THIS ARTICLE
What is elderberry, exactly?
Elderberry is the small, dark purple fruit of the elder tree. The species used in most supplements and research is European black elder, Sambucus nigra, which grows across most of Europe and is cultivated in many other parts of the world[4]. We cover the plant itself in What Is Black Elderberry (Sambucus nigra)?.
The berries are rich in polyphenols, especially the deep-purple pigments called anthocyanins, which are the compounds researchers are most interested in[4]. One important detail up front: raw berries, leaves and stems contain compounds that can make you sick, so elderberry is always cooked or processed into an extract before it is eaten[2]. More on that in Are Elderberries Poisonous?.
Does elderberry help with colds and flu?
This is the use almost all of the research focuses on, and the honest answer is “maybe, a little, based on small studies.”
The positive trials. In a 2004 trial of 60 adults with flu-like symptoms, people who took elderberry syrup (15 ml four times a day for five days) had symptoms relieved about four days earlier on average than those on placebo[5]. A trial in 312 long-haul air travelers found that people taking elderberry capsules had shorter, milder colds, although the number of colds wasn’t significantly different between groups[6].
The pooled evidence. A 2019 meta-analysis combining these kinds of trials found a large effect on upper respiratory symptoms, but across only 180 participants[1]. A 2021 systematic review took a more cautious line: elderberry may be a safe option for viral respiratory illness, but the evidence on both benefits and harms is uncertain[7].
The negative trial. In a 2020 randomized trial of 87 flu patients seen in emergency departments, elderberry did not shorten symptoms compared with placebo[3]. We walk through every trial in Elderberry for Flu: What the Clinical Trials Found.
What about everything else elderberry is marketed for?
You will see elderberry linked to heart health, blood sugar, inflammation and “detox.” The NIH’s National Center for Complementary and Integrative Health (NCCIH) is blunt about this: there isn’t enough information to show whether elderberry is helpful for any health purpose other than colds, flu and similar infections[2].
It is also worth knowing that U.S. regulators have taken action against companies that marketed elderberry with unsupported claims about COVID-19[2]. If a label or ad promises that elderberry prevents or cures an illness, treat it as a red flag.
What elderberry can’t do
Elderberry is not a replacement for a flu vaccine, rest, fluids or medical care. It hasn’t been shown to prevent colds or flu, and the one travel trial that looked at this found no significant drop in the number of colds[6]. The research that exists is about symptoms and duration, not prevention.
Most studies also used specific concentrated syrups or extracts at doses far higher than you will find in many gummies. The air-travel trial, for example, used 600–900 mg of elderberry extract a day[6]. That doesn’t mean smaller amounts do nothing; it means nobody has tested them.
The honest summary
- Best evidence: small trials suggesting elderberry may ease cold and flu symptoms and shorten them slightly.
- Mixed: one well-designed 2020 flu trial found no benefit.
- Not shown: preventing colds or flu, or any benefit beyond respiratory symptoms.
- Safety: prepared products appear well tolerated in short trials; raw berries and plant parts are not safe to eat.
Who should be careful with elderberry?
Little is known about elderberry’s safety during pregnancy or breastfeeding, and NCCIH advises anyone taking medication to check with a health care provider first, since some herbs interact with medicines[2]. Our full guide, Who Should Not Take Elderberry?, covers the details. If you are shopping for a child, read Elderberry for Kids first.
Our option
Vita Globe Elderberry 150mg Gummies with Vitamin C & Zinc
Each two-gummy serving has 150 mg of elderberry fruit extract (30:1), plus 150 mg of vitamin C and 10 mg of zinc (as zinc gluconate), in a blueberry-flavored gummy. It is made for adults, taken as two gummies a day with a meal, and is vegan, gluten-free and non-GMO. Contains coconut (tree nut). Tested by an independent third-party lab. That is a smaller amount of elderberry than most clinical trials used, so think of it as a convenient part of your seasonal routine, not a stand-in for a study dose.*
Frequently asked questions
Does elderberry actually boost your immune system?
There is no good evidence that elderberry “boosts” immunity in healthy people. The research looks at whether it eases cold and flu symptoms once you are sick, and those results are preliminary[2].
Is it OK to take elderberry every day?
Trials have mostly lasted days to a few weeks, so long-term daily use hasn’t been well studied. See Can You Take Elderberry Every Day?.
Does elderberry prevent the flu?
No study has shown that. The trials measured symptoms and recovery time, not prevention[7]. A yearly flu vaccine remains the main prevention tool; ask your doctor.
Are elderberry gummies as good as syrup?
Most trials used syrups, extracts or capsules, so gummies haven’t been directly tested. We compare the formats in Elderberry Syrup vs. Gummies, and brands in Elderberry Gummies 101.
What are the side effects of elderberry?
In short trials of prepared products, side effects were uncommon[7]. Eating raw or unripe berries, leaves or stems can cause nausea, vomiting and diarrhea[2].
Sources
- Hawkins J, Baker C, Cherry L, Dunne E. Black elderberry (Sambucus nigra) supplementation effectively treats upper respiratory symptoms: a meta-analysis of randomized, controlled clinical trials. Complement Ther Med. 2019;42:361-365. doi:10.1016/j.ctim.2018.12.004
- National Center for Complementary and Integrative Health. Elderberry: Usefulness and Safety. Updated November 2024. nccih.nih.gov/health/elderberry
- Macknin M, Wolski K, Negrey J, Mace S. Elderberry extract outpatient influenza treatment for emergency room patients ages 5 and above: a randomized, double-blind, placebo-controlled trial. J Gen Intern Med. 2020;35(11):3271-3277. doi:10.1007/s11606-020-06170-w
- Młynarczyk K, Walkowiak-Tomczak D, Łysiak GP. Bioactive properties of Sambucus nigra L. as a functional ingredient for food and pharmaceutical industry. J Funct Foods. 2018;40:377-390. doi:10.1016/j.jff.2017.11.025
- Zakay-Rones Z, Thom E, Wollan T, Wadstein J. Randomized study of the efficacy and safety of oral elderberry extract in the treatment of influenza A and B virus infections. J Int Med Res. 2004;32(2):132-140. doi:10.1177/147323000403200205
- Tiralongo E, Wee SS, Lea RA. Elderberry supplementation reduces cold duration and symptoms in air-travellers: a randomized, double-blind placebo-controlled clinical trial. Nutrients. 2016;8(4):182. doi:10.3390/nu8040182
- Wieland LS, Piechotta V, Feinberg T, et al. Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review. BMC Complement Med Ther. 2021;21(1):112. doi:10.1186/s12906-021-03283-5
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
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. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing, taking medication, or caring for a child.
