Reviewed by Lindsey Wilson, Certified Integrative Nutrition Health Coach (IIN) · Updated November 2026
Digestive bitters are concentrated herbal extracts, usually made from bitter roots and barks like gentian, dandelion and Oregon grape, that you take in small amounts before or after a meal. People use them as a traditional way to start eating, and some find they ease that heavy, slow feeling after a big meal. Whether they "work" is a fair question: the evidence for bitters is thin, and the best sources say so. Here's what they are, how to take them, who should skip them, and what we think is reasonable to expect.
What are digestive bitters?
Bitters are blends of bitter-tasting plants. The bitter taste is the point. Traditional herbal systems, including European herbalism and traditional Chinese medicine, have used bitter herbs at the start or end of a meal for a very long time, and the habit shows up in food too: arugula, radicchio, dandelion greens and the bitter aperitifs served before dinner in parts of Europe.
Modern bitters come as tinctures, drops, sprays, and tablets. Many tinctures are made with alcohol. Ours isn't: OWL Digestive Bitters is a spray made with water and vegetable glycerin, with spearmint and peppermint oil so the bitterness is bearable.
How do digestive bitters work?
The explanation you'll hear is that the bitter taste signals your body to prepare for food. Cleveland Clinic dietitian Beth Czerwony describes it this way: bitters stimulate your taste buds to make more saliva, which gets digestion going (Cleveland Clinic).
Here's the part many bitters pages leave out. The Cleveland Clinic article says plainly that "there aren't yet enough conclusive studies" on the benefits of bitters. We agree. The mechanism makes sense, and generations of people have used them, but that isn't the same as strong human trials showing they improve digestion, bloating or anything else. Think of bitters as a small, traditional habit, not a treatment.
When to take digestive bitters
There's no single rule. The most common advice, including Cleveland Clinic's, is to take them about 15 minutes before a meal, so the taste has time to do its job. The suggested use on our label is 3 sprays into the mouth, before or after a meal, as often as you like, so follow the directions on whatever product you use. Some people prefer them after a heavy meal.
Two practical notes. You do want to taste the bitter part; if it tastes like nothing, it's probably not doing much. And don't treat them as a quick fix for a symptom that keeps coming back. If you have regular discomfort after eating, that's worth a conversation with your doctor.
What's in OWL Digestive Bitters
Dandelion root, orange peel, chamomile flower, gentian root, Oregon grape root, fennel seed, yellow dock root, ginger root, blue flag root and prickly ash bark, in water and vegetable glycerin, with spearmint and peppermint essential oils. It's a spray, so you spritz it straight into your mouth. We built it to taste more like a mint than a medicine. It's a supplement, which means the FDA doesn't review it for effectiveness, and we don't claim it treats anything.
Who should skip bitters, or ask first
Bitters can increase stomach acid, so Cleveland Clinic says they may make acid reflux, heartburn, bloating or nausea worse in people who are prone to them. The article also says bitters can interact with medications, including those for blood pressure and diabetes, and lists conditions where it advises caution or skipping them: diabetes, gallbladder disease, gastritis, hiatal hernia, kidney stones, liver problems and peptic ulcers. Many herbal products aren't advised during pregnancy or nursing. Check with your doctor or pharmacist first if any of this applies to you, and stop if they make you feel worse.
Can you get the same effect from food?
Mostly, yes, and it's the easier place to start. Arugula, radicchio, endive, dandelion greens, kale, Brussels sprouts and a squeeze of lemon all bring bitterness to a meal. A small salad of bitter greens before dinner is the food version of a few sprays. See our post on carminative herbs for herbs like ginger, fennel and peppermint that people reach for after meals, and our guide to what to eat when digestion feels off.
A short history
Bitter herbs in drinks go back a very long way. People in many cultures infused wine and spirits with roots and barks, and the modern cocktail bitters bottle descends from that habit. Angostura bitters, created in 1824 by a German doctor in Venezuela, are one famous example, though they're mostly a flavoring today, not a digestive product. That heritage is a reason for curiosity, not proof of benefit.
FAQs
What do digestive bitters do?
They provide a bitter taste that traditionally signals the start of digestion. Some people feel they help a heavy meal sit better. Strong clinical evidence is lacking.
When should I take digestive bitters?
Usually about 15 minutes before a meal. Our label says 3 sprays before or after meals.
Do digestive bitters help with bloating?
Some people say so, but there isn't good evidence. For persistent bloating, see our bloating guide and talk to your doctor.
Are digestive bitters safe every day?
For many healthy adults, small amounts are tolerated, but there's no established daily dose, and they're not right for everyone. See the list above and check with your doctor if you take medication or have a digestive or liver condition.
Do OWL Digestive Bitters contain alcohol?
No alcohol is listed in the ingredients. It's made with water and vegetable glycerin.
Can I take them with the Reset or bone broth?
Yes, many Reset customers like a few sprays before a broth. It's optional. See bone broth for gut health and the OWL Reset.
Keep reading: What Are Carminative Herbs? · Bloating 101 · What to Eat When Your Digestion Feels Off · Bone Broth for Gut Health
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure or prevent any disease.