Which CBD concentration to choose? 5%, 10%, 15%, 20% – a complete guide
Which CBD concentration to choose: 5%, 10%, 15% or 20%? A complete guide to CBD oil concentrations — who should choose what, how to calculate the dose, and when it’s worth switching up.
The concentration of CBD oil is one of those decisions where new users often get confused — and in both directions. Some start with too low a concentration and never reach an effective dose because counting 15 drops twice a day becomes cumbersome. Others buy 20% right away, feel overwhelmed (since each drop is 10 mg), and lose control over titration. The right concentration choice is not about the quality of the product, but about the convenience of dosing tailored to your stage. This guide solves this puzzle once and for all — with specific math and recommendations for every user profile.
KEY INFORMATION
• The concentration of CBD (%) only indicates how much CBD is in the oil — the effect depends on the dose in mg, not %.
• 1 drop 5% = ~2.5 mg; 10% = ~5 mg; 15% = ~7.5 mg; 20% = ~10 mg (10 ml bottle, ~200 drops).
• The cost of 100 mg of CBD is similar across all concentrations (around 8–10 PLN) — the difference is convenience, not economy.
• Study by Pamplona et al. (Frontiers, 2020): full spectrum is more effective than isolate at lower doses due to the entourage effect.
• Rule: start with 5%, switch to higher when the number of drops becomes cumbersome (>8 daily).
What does the percentage concentration of CBD really mean?
The percentage concentration of CBD oil is the percentage of the volume of oil made up of pure CBD. Simply put: 5% means that in 1 ml of oil there are 50 mg of CBD (5% × 1000 mg/ml = 50 mg/ml). In a whole 10 ml bottle: 5% × 10 ml × 1000 mg/100 ml = 500 mg of CBD. All these calculations must align with the information provided on the label — this is the first way to verify product quality.
How much CBD is in one drop? A standard CBD oil in a dropper bottle provides about 200 drops in 10 ml (it varies slightly depending on viscosity and the dropper). The CBD content in one drop:
- 5% / 10 ml: 500 mg / 200 drops = 2.5 mg CBD/drop
- 10% / 10 ml: 1000 mg / 200 drops = 5 mg CBD/drop
- 15% / 10 ml: 1500 mg / 200 drops = 7.5 mg CBD/drop
- 20% / 10 ml: 2000 mg / 200 drops = 10 mg CBD/drop
Key takeaway: to achieve 25 mg of CBD daily, you need 10 drops of 5%, 5 drops of 10%, 3.3 drops of 15%, or 2.5 drops of 20%. The effect is identical — because the same amount of CBD enters the body. The only difference is the convenience of counting and the volume of oil.
CBD 5% – for whom and when?
CBD oil 5% is the starting point for the vast majority of new users — and rightly so. 2.5 mg of CBD per drop is the minimal dosing granularity that allows testing the effects of CBD in the range of 5–20 mg/day (2–8 drops) without the risk of taking too high a dose on first contact. The 'start low, go slow' protocol — recommended by researchers and clinicians — is easiest to implement with 5%.
Who benefits most from 5%: first-time CBD users, individuals with low body weight or heightened sensitivity to supplements, seniors (where slower metabolism requires more cautious titration), and those who want to test CBD for a specific issue and monitor effects step by step. The Hempmont Classic 12 ml CBD oil 5% contains 600 mg of CBD — at a dose of 10 mg/day, it lasts for 60 days, allowing time for a full assessment of effects.
CBD 10% – the golden mean for regular users
10% oil is the most convenient concentration for those who have already established a stable dose in the range of 15–30 mg/day. 5 mg per drop means that 25 mg daily is just 5 drops — a number that anyone can easily measure in their evening routine. Economically, it is comparable to 5% (around 9.9 PLN/100 mg), but definitely more convenient.
Who benefits most from 10%: individuals who have been using CBD for at least 4–6 weeks and know their optimal dose in the range of 15–30 mg, those with conditions requiring regular supplementation (anxiety, back pain, sleep), and anyone who counted more than 8 drops daily with 5%. One 10 ml oil at 20 mg/day lasts for 50 days.
More on CBD dosing — how much to take for different purposes — can be found in the article CBD Dosage.
CBD 15% – for higher doses and experienced users
The 15% concentration addresses the same convenience need as 10% — just one step higher. 7.5 mg per drop means that 30 mg daily is 4 drops, and 45 mg is 6 drops. For those using CBD for chronic pain or requiring more intense mental support, this significantly simplifies the routine compared to 10%, where 30 mg = 6 drops, and 45 mg = 9 drops.
When to choose 15% instead of 10%? When your optimal dose is 30–50 mg/day and you don’t want to count 6–10 drops with each serving. The cost of 139 PLN for 1500 mg (about 9.3 PLN/100 mg) is slightly more favorable than 10% (9.9 PLN/100 mg) — which translates to savings of several PLN with regular monthly use.
CBD 20% – pro-dosing for advanced users
20% is the highest commonly available concentration of CBD oil. 10 mg per drop means that 50 mg daily is only 5 drops — which is definitely the most convenient format for intensive supplementation. The cost of 179 PLN for 2000 mg is about 9 PLN/100 mg — the lowest in the entire line, which is significant for doses of 40–80 mg/day.
Who should choose 20%: exclusively individuals with several months of CBD experience who have established their optimal dose above 40 mg/day and are looking for convenience and economy. This is not a product for someone who is just exploring CBD — the dosing precision is lower here (each drop is 10 mg, making it difficult to take, for example, 15 mg).
One argument for switching to 20% instead of continuing with 10%: at a dose of 60 mg/day with 10% oil, you consume a bottle in about 17 days. With 20%, the same dose is 6 drops daily — a bottle lasts about 33 days. Monthly cost at 60 mg/day: 10% oil = ~180 PLN, 20% oil = ~162 PLN. Savings of about 10% at the same dose, plus fewer orders and less time spent counting drops.
Full spectrum vs isolate — how does it affect the choice of concentration?
The type of CBD extract (isolate, broad spectrum, full spectrum) matters for the choice of concentration. The study by Pamplona et al. (Frontiers in Plant Science, 2020) showed that full-spectrum extract was clinically effective at a dose about 2× lower than CBD isolate — thanks to the entourage effect (the synergy of cannabinoids, terpenes, and flavonoids). What does this mean for concentration?
If you choose full spectrum CBD, you can potentially achieve a similar effect at a lower concentration or lower dose. In other words, a full spectrum 5% oil may work similarly to a 10% isolate with the same number of drops. This translates to the choice of concentration: with full spectrum, you can stop at a lower concentration than with isolated CBD, achieving the same therapeutic goal.
Important disclaimer: full spectrum contains trace amounts of THC (up to 0.3%). At a dose of 25 mg/day from 5% full spectrum oil, the amount of THC is negligibly small and does not cause any effect. At doses > 50 mg/day for an extended period, minimal accumulation of THC in tissues is possible — which, with a sensitive drug test, may yield a weak positive result. Individuals subject to drug testing should choose isolate or broad spectrum. More about purchasing and choosing CBD in Poland in the article Where to buy CBD in Poland.
How does CBD concentration affect the monthly cost of supplementation?
One of the most common misconceptions when choosing a concentration is the belief that a higher concentration is more expensive. In reality, the cost of 100 mg of CBD is very similar regardless of concentration — the only difference is convenience and the number of drops. Let’s calculate using real examples with a monthly budget at a dose of 25 mg of CBD daily:
- CBD 5% (49 PLN / 500 mg): 25 mg × 30 days = 750 mg/month → cost about 73 PLN/month (1.5 bottles). You count 10 drops daily.
- CBD 10% (99 PLN / 1000 mg): 750 mg/month → cost about 74 PLN/month (0.75 bottles). You count 5 drops daily.
- CBD 15% (139 PLN / 1500 mg): 750 mg/month → cost about 69 PLN/month (0.5 bottles). You count 3–4 drops daily.
- CBD 20% (179 PLN / 2000 mg): 750 mg/month → cost approx. 67 PLN/month (0.375 bottles). You calculate 2.5 drops daily.
Conclusion: the monthly cost of supplementation at the same dose is almost identical regardless of concentration — the difference is a few zlotys per month. Therefore, the choice of concentration is primarily a matter of convenience in daily dosing, not savings. However, at doses above 50 mg/day, a higher concentration starts to provide a genuinely cheaper option.
Our observations: The most common mistake we see among new CBD users is buying the cheapest product (low concentration) under the impression that it is 'weaker CBD' — and subsequently taking too small a dose in mg. What matters is mg of CBD per day, not the concentration on the label. Always convert to mg before deciding on the amount.
When does concentration matter less than other factors?
While the choice of concentration is important, there are factors that have an even greater impact on the effectiveness of CBD than the percentages on the label.
Bioavailability and method of administration. Sublingual CBD (under the tongue, held for 60–90 seconds) has a bioavailability of 13–19%. Swallowed CBD without holding — only 4–8%. This means that the method of administration can effectively double or triple the absorbed dose, regardless of concentration. With a 10% oil, 5 drops (25 mg) — the difference between holding under the tongue and swallowing immediately is the difference between ~3.25 mg and ~1.25 mg of actually absorbed CBD.
Food. The study by Saals et al. (Scientific Reports, 2025) It has been shown that CBD taken with a fatty meal has 9.7× higher area under the concentration-time curve (AUC) than on an empty stomach. In other words: CBD with avocado, nuts, or eggs works like an oil with several times higher concentration compared to CBD on an empty stomach. This is the only 'free' method to double the effectiveness without buying a more expensive product.
Regularity. CBD works better with consistent, regular use than 'when I remember'. The endocannabinoid system responds to regular CBD delivery over several weeks — it is more about building homeostasis than one-time spikes in blood concentration. Daily use at consistent times (e.g., in the morning with coffee and in the evening before bed) yields better results than sporadic high doses.
Product quality and COA certification. A 20% oil from a manufacturer without an external laboratory certificate may actually contain less CBD than declared. Always check the COA before purchasing — this is a more important decision than choosing between 15% and 20%. Hempmont products available at u Bucha have COA certificates from independent laboratories, ensuring CBD content matches the label.
Comparison table: which concentration is for whom?
| Concentration | CBD/drop | For whom | Price (10 ml) |
|---|---|---|---|
| 5% | ~2.5 mg | Beginners, doses 5–20 mg/day | 49 PLN (12 ml) |
| 10% | ~5 mg | Regular use, 15–30 mg/day | 99 PLN |
| 15% | ~7.5 mg | Advanced, 30–50 mg/day | 139 zł |
| 20% | ~10 mg | Pro, doses > 40 mg/day | 179 zł |
Frequently Asked Questions
Which CBD concentration is best for beginners?
For beginners, the best concentration is 5% — each drop contains about 2.5 mg of CBD, allowing you to start with 2–3 drops and precisely increase the dose. Higher concentrations without experience with CBD are unnecessary and complicate dosage control.
When is it worth switching from 5% to 10% CBD?
Switching to 10% is worth considering when you take more than 8 drops of 5% daily or when your optimal dose is 15–25 mg/day. Switching to 10% allows you to take the same dose in mg with half the drops — without changing the cost of CBD per mg.
Is a higher concentration of CBD stronger?
A higher concentration is not inherently stronger — the effect is determined by the dose in mg of CBD, not the percentage concentration. A 20% oil in 3 drops contains the same amount of CBD as a 10% oil in 6 drops. A higher concentration offers convenience and lower cost per mg, not a stronger effect.
What is the difference between CBD 15% and CBD 20%?
At 15%, each drop contains about 7.5 mg of CBD, while at 20% — about 10 mg. The difference is mainly economic and practical. At a dose of 50 mg/day, you need 7 drops of 15% vs 5 drops of 20%. Monthly cost at this dose: 15% = about 139 zł × 1 bottle (lasts 40 days), 20% = about 179 zł × 0.75 bottle = about 134 zł. Both concentrations are intended for experienced users with an established dose above 30 mg/day.
Is it always worth taking CBD sublingually?
Yes — sublingual administration (holding for 60–90 seconds before swallowing) provides a bioavailability of 13–19%, while swallowing immediately gives only 4–8% according to Millar et al. (EJDMPP, 2019). Regardless of the chosen concentration, this technique is one of the most important variables affecting effectiveness. In practice, this means that good holding under the tongue can replace the need to switch to a higher concentration.
Do you need to change the dose when switching to a higher concentration?
No — if you take 5 drops (25 mg) of 10% oil, when switching to 20% you should take 2.5 drops (25 mg) — the same amount of CBD. The most common mistake: buying a stronger oil and keeping the same number of drops, which results in an unintentional doubling of the dose. Always convert to mg of CBD before changing concentrations. A simple rule is helpful: new concentration/previous concentration × previous number of drops = new number of drops.
This article is for informational and educational purposes. It contains internal links to products available in the u Bucha store. Prices and specifications may change — check the current data on the product page before purchasing.
Author: Michał Waluk · Published: 2026-05-04 · Updated: 2026-05-04
