Softgels, capsules and liquid drops, all scored on the same four criteria. We compared Oregano+, Resilia oregano oil, MicroIngredients oil of oregano, Gaia Herbs oil of oregano, Swanson oregano oil, Oreganol P73 and Natural Factors oil of oregano using what each brand publishes on its own label and product page.
Top pick: Oregano+Oregano and black seed oil softgelIf you are searching for the best oregano oil, the first thing to know is that the products do not describe themselves in the same way. One brand prints a carvacrol percentage, another prints milligrams, and several print neither. Headline numbers such as "6,000 mg" sound impressive but depend on the extract ratio behind them.
So we applied one method to all seven. Oregano+ scored highest at 9.1 out of 10, with Resilia oregano oil (8.7) and MicroIngredients oil of oregano (8.2) next. Oregano+ leads because it combines oregano and black seed oil in a softgel, states its carvacrol as an 85% standardized extract, lists its testing and free-from claims, and offers the longest guarantee we could confirm at 90 days. It is not perfect: Resilia is clearer about black seed oil quantity, and we say so in the reviews below.
If you are choosing between oregano oil capsules, softgels and drops for the first time, the buying guide further down explains what to look for, and the comparison table puts every product on one screen.
Every product was scored from 0 to 10 on four criteria, using only information the brand publishes on its own product page. We did not run laboratory tests. The overall score is the average of the four, so a product cannot win on price alone or on one impressive number.
Why the scoring is uneven in places. A missing number counts against a product because you cannot verify it before you buy. Where a brand does not state something on its page, we say "not stated" rather than assume. If a brand updates its page, its score may change.
Seven oregano oil supplements, ranked by overall score. Tap any review link for the full breakdown, stat bars, pros and cons.
The only formula here that pairs a standardized 85% carvacrol oregano extract with black seed oil and a 90-day guarantee.
A strong, transparent softgel and the closest rival to Oregano+.
The right two oils at a low price, held back by an unstated carvacrol figure.
Clear numbers and a trusted name, but oregano only and labelled for short use.
The cheapest bottle here, with the least detail on the label page.
A long-standing wild oregano oil with a disclosed carvacrol range, but little else published.
Our liquid pick: clear carvacrol figures, but drops are less convenient and stock was out.
The same criteria, applied to every product. Swipe sideways on a phone to see all columns; the row labels stay in view.
| Criteria | Herbies | Resilia | MicroIngredients | Gaia Herbs | Swanson | Oreganol P73 | Natural Factors |
|---|---|---|---|---|---|---|---|
| Overall score | 9.1 | 8.7 | 8.2 | 7.3 | 7.2 | 7.1 | 6.5 |
| Format | Softgel, 2 per day | Softgel | Softgel, 150 or 300 count | Vegan capsule, 60 count | Vegan softgel, 120 count | Gelcap, 60 or 120 count | Liquid drops, 1 or 2 fl oz |
| Oregano oil per serving | 6,000 mg equivalent per serving | 6,000 mg of 20:1 extract per serving | 6,000 mg of 20:1 extract per serving | 230 mg CO2 extract per capsule | 150 mg of 10:1 extract per serving | Wild oregano oil (P73 blend) in olive oil | 30 mg organic oregano oil per serving |
| Carvacrol stated | ✓ 85% standardized extract | ✓ 165 mg per serving | ✗ Not stated | ✓ 27 mg or more per capsule | ✗ Not stated | ✓ 68% to 78% | ✓ 80% minimum (24 mg) |
| Black seed oil | ✓ Yesamount not listed | ✓ 200 mg per serving | ✓ 200 mg per serving | ✗ No | ✗ No | ✗ No | ✗ No |
| Testing | ✓ Third-party | ✓ Third-party | ~ "Lab tested" | ~ In-house ISO lab | ✗ Not stated | ✗ Not stated | ✗ Not stated |
| Guarantee | 90-day money-back | 30-day money-back | 30-day return | Not shown | "100% money-back" | Not stated | Not detailed |
| Price (US) | $39.93 | $34.99 | $24.95 | $27.89 | $12.19 | From $29.99 | $19.99 |
| Customer rating | 4.87,422+ reviews | 4.9count not shown | 4.985 reviews | 4.8863 reviews | 4.7282 reviews | not shown | 5.03 reviews |
Scores use the four criteria explained above. Specifications and prices were taken from each brand's own product page on 29 September 2026 and can change; check the current listing before you buy. Oregano+ price shown for your selected region.
Each review uses the same layout: the scores, the key specifications, what stood out and what held the product back.
The only formula here that pairs a standardized 85% carvacrol oregano extract with black seed oil and a 90-day guarantee.
Best for: Daily gut and digestive support in one softgel
Oregano+ is built around one idea: put a strong oregano oil and black seed oil in the same softgel, state the carvacrol level as a percentage, and stand behind it for longer than anyone else on this list. Each serving of two softgels provides 6,000 mg of oregano oil equivalent from an 85% carvacrol standardized extract of Mediterranean oregano, together with Egyptian black seed oil. A pouch holds 60 softgels, so one pouch is a 30-day supply at the suggested two a day.
The clean-formula details are the second reason it leads. The brand lists the formula as free from fillers, gluten, dairy, soy, tree nuts and binders, and states that it is third-party tested. Swanson's page, by contrast, lists modified food starch, carrageenan and sorbitol among its other ingredients, and several brands here publish no testing information at all.
Day to day, the softgel is the practical win. There are no drops to measure and no strong taste to get through, and the brand states that its softgels avoid the oregano burps some people report with liquid oregano oil. The suggested routine is two softgels with your largest meal. As with any digestive supplement, the brand notes that a short settling-in period is normal for some people, and one of its verified customers wrote that it "took about 3 weeks to really notice a difference but worth sticking with it."
Both rivals publish 200 mg of black seed oil per serving, which Oregano+ does not, so on that single line they are clearer. Where Oregano+ pulls ahead is the combination: a carvacrol percentage rather than silence (MicroIngredients) or a milligram figure only (Resilia), a 90-day guarantee against 30 days for both, and a multi-buy and subscription structure that lowers the per-pouch price. That combination, applied to the same four criteria as every other product, is what gives it the top score.
The honest caveats. The black seed oil amount is not listed on the product page we checked, it is sold online only, and the single-pouch price is higher than MicroIngredients and Swanson per bottle, although the multi-buy and subscription options bring the per-pouch cost down.
Offers and prices as shown on the Oregano+ product page on 29 September 2026 and subject to change. Guarantee: 90-day money-back, terms on the product page.
“My stomach has been much happier. Worth trying in my opinion.”
“Much easier than taking straight oregano oil. Worth trying in my opinion.”
“I like having both oils together rather than buying them separately.”
“Helped with my bloating and tiredness. Took about 3 weeks to really notice a difference but worth sticking with it.”
Reviews are quoted verbatim from the Oregano+ product page. Individual results may vary.
See Oregano+ and today's offer →
A strong, transparent softgel and the closest rival to Oregano+.
Best for: Shoppers who want every dose printed on the page
Resilia oregano oil is a two-oil softgel: 6,000 mg of 20:1 oregano extract (from Origanum minutiflorum), 200 mg of black seed oil and 165 mg of carvacrol per serving, all printed on the product page. The page also states third-party testing for purity and potency, and lists the formula as gluten-, dairy-, sugar- and soy-free.
That level of disclosure is why Resilia scores 9.2 for label transparency, slightly ahead of Oregano+ on that one criterion. It trails on value and reassurance: the refund window is 30 days against 90, the single-bottle price is $34.99, and its multi-buy tiers add free gifts rather than free bottles. It is a legitimate product from a heavily advertised brand, and a sound second choice if a milligram figure for every active matters more to you than the length of the guarantee.
The right two oils at a low price, held back by an unstated carvacrol figure.
Best for: A budget softgel that still includes black seed oil
MicroIngredients oil of oregano with black seed oil pairs 6,000 mg of 20:1 oregano extract with 200 mg of black seed oil per serving in a softgel. It is sold in 150 or 300 softgel bottles, which at the suggested two a day is a long supply for $24.95. The page describes the ingredients as lab tested and the product as non-GMO verified.
What holds it back is detail. The carvacrol content is not specified on the product page, "lab tested" does not name a third-party laboratory, the return window is 30 days, and the 4.9 rating rests on 85 reviews, a much smaller base than Oregano+. If price per softgel is your priority and you are comfortable without a carvacrol figure, it is the strongest budget option in this comparison.
Clear numbers and a trusted name, but oregano only and labelled for short use.
Best for: Short courses from a well-known herbal brand
Gaia Herbs oil of oregano is a vegan capsule with 230 mg of supercritical CO2 oregano extract, at least 27 mg of carvacrol and no more than 5 mg of thymol per capsule. It carries a 4.8 rating from 863 reviews with 96% saying they would recommend it, which makes Gaia oil of oregano one of the better-reviewed products here after Oregano+.
Two things limit its score. It contains oregano only, with no black seed oil, and the suggested use is one capsule twice daily with meals for a maximum of two to four weeks, so it is designed as a short course rather than a daily routine. Testing is done in Gaia's own ISO-certified laboratory rather than by an outside lab, and the page we checked did not show a guarantee. At $27.89 for 60 capsules, it is priced between the budget and premium softgels.
The cheapest bottle here, with the least detail on the label page.
Best for: The lowest price per bottle
Swanson oregano oil is the simplest product in the comparison: 150 mg of a 10:1 oregano extract per serving in an olive oil base, in a vegan softgel, 120 to a bottle for $12.19. It has a 4.7 rating from 282 reviews and a "100% money-back guarantee" badge, and it is the cheapest bottle on this list.
The trade-off is what is missing from the page. No carvacrol percentage or milligram figure is given, there is no black seed oil, and no testing information is shown. The other ingredients include modified food starch, glycerin, carrageenan and sorbitol. Extract ratios also differ between brands, so 150 mg of a 10:1 extract is not a like-for-like number against the 6,000 mg of 20:1 extract on the Resilia and MicroIngredients labels. For people who want a basic entry-level softgel at minimal cost, it does the job; for anyone comparing actives, it gives you the least to compare.
A long-standing wild oregano oil with a disclosed carvacrol range, but little else published.
Best for: Wild oregano in olive oil with a stated carvacrol range
Oreganol P73 gelcaps use wild oregano oil (a P73 blend drawn from more than one oregano species) in extra virgin olive oil, in a tapioca-based vegetable gelatin gelcap. It is sold in 60 or 120 counts, from $29.99, and is described as vegan-friendly and made without alcohol or chemical extraction. Its stand-out feature is a stated carvacrol range of 68% to 78%, which puts Oreganol among the few products here that quantify carvacrol at all.
It loses ground on everything around the formula: no black seed oil, no third-party testing information, no guarantee terms and no review count on the page we checked. If a wild-sourced oregano oil with a disclosed carvacrol range appeals to you, it is worth a look; if you want the full picture before buying, other products here publish more.
Our liquid pick: clear carvacrol figures, but drops are less convenient and stock was out.
Best for: Anyone who specifically wants drops
Natural Factors oil of oregano is the liquid in this comparison. Each serving supplies 30 mg of organic oregano oil (Origanum vulgare) standardized to a minimum of 80% carvacrol, which is 24 mg, in an organic cold-pressed olive oil base with natural vitamin E. It is sold in 1 fl oz ($19.99) and 2 fl oz ($29.99) bottles, and lists a long free-from statement including dairy, gluten, soy, yeast and GMOs.
The brief for including it was simple: some readers prefer drops. The catch is practical. Liquids mean measuring each dose, a stronger taste, and a bottle that is less portable than a softgel, which is why it scores lowest for ease and comfort. It was also listed as sold out when we checked, its 5.0 rating is based on only 3 reviews, and the page did not mention third-party testing or a guarantee.
Oregano oil supplements come as softgels, capsules and liquid drops, and the differences that matter are rarely on the front of the pack. Use this checklist on any product, including the ones we did not review.
Oregano oil capsules and softgels are the easiest to take: no measuring, no strong taste, and a fixed dose each time. Drops let you adjust the amount but are harder to use consistently. The softgel formulas in this comparison, Oregano+, Resilia and MicroIngredients, also make it practical to combine oregano with black seed oil in one step.
Oregano oil is a food supplement, not a medicine. Speak to a doctor or pharmacist before use if you are pregnant, breastfeeding, taking medication or managing a medical condition.
Based on the four criteria used in this comparison, Oregano+ scored highest at 9.1 out of 10, ahead of Resilia oregano oil at 8.7 and MicroIngredients oil of oregano at 8.2. The best oregano oil supplement for you depends on format and priorities: Oregano+ and Resilia lead for people who want oregano and black seed oil in a softgel, MicroIngredients for a lower price per softgel, and Natural Factors oil of oregano if you prefer drops.
For a daily routine, look for a softgel or capsule, a stated carvacrol level, and testing information you can check. On those points, the oregano oil best brand in this comparison is Oregano+ (Herbies), with Resilia a close second. Gaia Herbs' label limits use to two to four weeks at a time, so it suits short courses better than an everyday habit.
Softgels and capsules remove the measuring, the strong taste and the mess, which is why they score higher for ease and comfort here. Liquid drops such as Natural Factors give you flexible dosing but are less convenient to take, and some people find the taste harsh. Oregano oil capsules and softgels are the more practical choice for most daily users.
Carvacrol is the main active compound in oregano oil. Brands describe it in different ways: as a percentage (Oregano+, Oreganol P73, Natural Factors), as milligrams per serving (Resilia, Gaia Herbs), or not at all (MicroIngredients and Swanson). A stated figure lets you compare products fairly. Headline milligrams of "oregano oil" are not comparable on their own, because extract ratios such as 10:1 and 20:1 differ.
Black seed oil (Nigella sativa) is traditionally used alongside oregano for digestive wellness and contains thymoquinone. Oregano+, Resilia oregano oil and MicroIngredients all combine the two in one formula. Buying the oils separately usually means more bottles and a more complicated routine.
Yes. Resilia states 6,000 mg of 20:1 oregano extract, 200 mg of black seed oil and 165 mg of carvacrol per serving, and says it is third-party tested. It scored 8.7 in this comparison. The main differences with Oregano+ are the guarantee (30 days versus 90) and price structure, not the quality of the disclosures.
Gaia Herbs oil of oregano is a well-reviewed product (4.8 from 863 reviews) with clear carvacrol and thymol amounts. It contains no black seed oil and its label limits use to two to four weeks at a time, so it fits a short course better than a daily routine. It scored 7.3 overall.
Swanson oregano oil is the cheapest bottle ($12.19) but publishes no carvacrol figure, no black seed oil and no testing information. Oreganol P73 gelcaps state a 68% to 78% carvacrol range but little else. Natural Factors oil of oregano is a liquid with an 80% minimum carvacrol standardization, and was sold out when we checked. All three scored between 6.5 and 7.2.
Oregano oil can cause stomach upset in some people, and taking it with food may help. Oregano supplements are generally not recommended during pregnancy or breastfeeding, and you should speak to a doctor or pharmacist first if you take medication or have a medical condition. Follow the dose on the label.
Follow the directions on the product you choose, because they differ: Gaia Herbs' label limits use to two to four weeks at a time, while Oregano+ is designed as a daily supplement. Results vary from person to person, and supplements are not a substitute for a varied diet or medical advice.
Oregano+ is backed by a 90-day money-back guarantee, according to its product page. That is the longest window we could confirm among the seven products here: Resilia and MicroIngredients offer 30 days, and several brands do not state terms on their product pages.
Yes. The Oregano+ product page shows prices in dollars for US visitors and pounds for UK visitors, and the region switch at the top of this page shows both. The other brands' prices in this comparison are US prices in dollars, as listed on 29 September 2026.
After scoring seven oregano oil supplements on the same four criteria, Oregano+ came out on top at 9.1 out of 10. It pairs oregano with black seed oil in a softgel, states an 85% carvacrol standardized extract, is third-party tested and free from fillers, gluten, dairy and soy, and comes with a 90-day money-back guarantee.
If it is not the right fit, Resilia oregano oil is a solid alternative with fully quantified actives, and MicroIngredients oil of oregano is the budget route.
See Oregano+ and today's offer →