High Strength CBD Oil

The strongest CBD oils we make — 2000mg to 4000mg
This collection brings together the top end of both our oil ranges: every bottle here carries at least 2000mg of CBD in 30ml, rising to 4000mg — around 133mg per ml. All are made at our laboratory in York Science Park from our own EU-certified hemp, and every product is independently lab tested, with reports published on our lab reports page.

What counts as “high strength”?
Most CBD oil sold in the UK sits between 500mg and 1000mg per bottle. We treat 2000mg per 30ml (about 67mg per ml) as the start of genuinely high strength — from there each step up delivers more CBD in every drop. Every bottle includes a graduated pipette, still a rarity in this market, so a precise dose is as easy to measure at 4000mg as it is at 500mg.

Broad spectrum or pure isolate?
Both ranges reach 4000mg. The Broad Spectrum oils keep the hemp plant’s other cannabinoids and terpenes (with the THC removed) on a hemp seed oil carrier — many users tell us they prefer whole-plant extracts, though the “entourage effect” remains anecdotal. The Pure CBD oils are CBD isolate on an organic MCT coconut oil carrier: flavour-neutral, single-compound simplicity. Either way, every HempWell oil is 0% THC — our guide to CBD and drugs tests explains what that means in practice, and the isolate vs broad spectrum deep-dive covers the differences properly.

Who are stronger oils for?
Mostly, people who already know their daily amount. A higher concentration means fewer drops per dose, and the arithmetic favours bigger bottles too: milligram for milligram, the 4000mg oils work out roughly 35–40% cheaper than buying the same CBD in 1000mg bottles. Those researching CBD for persistent discomfort also tend to arrive at the stronger end of the range — our guide to CBD and nerve pain looks honestly at what the research does and doesn’t show.

Getting the dose right
Strength changes how much CBD is in each drop — not how much you should take in a day. The FSA advises healthy adults not to exceed 70mg of CBD daily, and the sensible route is still to start low and build gradually, whatever the bottle strength. Our dosage guide walks through it step by step, and if you’re not sure whether high strength is right for you at all, the strength guide compares the options.

Why buy from HempWell
Every oil here is developed with guidance from our Scientific Advisor, Professor Mike Barnes, made in-house in York from hemp grown on our own farm in Europe, and backed by 2,100+ verified customer reviews. If a strength earns a place in your routine, a subscription takes 20% off every order — or browse the full CBD oil collection to compare all strengths side by side.