If you've ever tried to buy CBD, you've probably run into terms like "full spectrum," "broad spectrum," "whole spectrum," and "isolate" — and wondered what any of it actually means. This guide explains the differences in plain language so you can make an informed choice.
The Hemp Plant Contains More Than Just CBD
Hemp contains hundreds of naturally occurring compounds including cannabinoids (CBD, THC, CBG, CBN, CBC), terpenes (aromatic compounds that also have therapeutic properties), and flavonoids. How many of these compounds end up in your final product depends on the extraction method — and that's where these terms come in.
Full Spectrum CBD
Full spectrum CBD contains all the cannabinoids, terpenes, and flavonoids naturally present in the hemp plant, including up to 0.3% Delta-9 THC (the legal limit). This is the most "complete" form of CBD in terms of plant compounds.
Best for: Maximum therapeutic effect; people without THC concerns
Whole Spectrum CBD
Whole spectrum is essentially full spectrum by another name — some brands use "whole spectrum" to emphasize that the entire plant profile is preserved with minimal processing. Kingdom Harvest uses the term "whole spectrum" to mean their extract retains all naturally occurring cannabinoids and terpenes from their NC-grown hemp.
Best for: Same as full spectrum; prioritizing the entourage effect
Broad Spectrum CBD
Broad spectrum CBD has all the cannabinoids and terpenes of full spectrum except THC, which is removed through an additional processing step. You get the entourage effect without any THC — important for drug-tested employees, pregnant individuals, or those with THC sensitivity.
Best for: People who need THC-free but want more than just CBD
CBD Isolate
CBD isolate is pure CBD — 99%+ CBD with all other compounds removed. It's typically a white crystalline powder or oil. No THC, no terpenes, no other cannabinoids.
Best for: Maximum THC-free assurance; precise dosing; those who react poorly to other cannabinoids
The Entourage Effect
Research suggests that cannabinoids, terpenes, and other hemp compounds work better together than in isolation. This is called the "entourage effect." Full/whole spectrum products typically outperform isolates in clinical comparisons for pain, anxiety, and sleep — though isolate has its place for specific use cases.
Which Should You Choose?
- Want maximum effectiveness and don't have THC concerns → Whole Spectrum or Full Spectrum
- Need THC-free but want entourage benefits → Broad Spectrum
- Job drug testing or maximum THC avoidance → Isolate
- Pets → Broad Spectrum or Isolate (never THC for pets)
Browse our full CBD oil selection including whole-spectrum, broad-spectrum, and isolate options from Kingdom Harvest.