Understanding the Terminology
The cannabis extract world can be confusing with its many acronyms and names. Two of the most common full-spectrum extracts are RSO (Rick Simpson Oil) and FECO (Full Extract Cannabis Oil). While these terms are often used interchangeably, there are some important distinctions to understand.
What is RSO?
Rick Simpson Oil is named after Rick Simpson, who popularized this extraction method in the early 2000s. RSO traditionally refers to:
- Cannabis oil extracted using isopropyl alcohol (though modern producers often use food-grade ethanol)
- A thick, tar-like consistency
- High THC concentration (typically 60-90%)
- Full-spectrum cannabinoid and terpene profile
What is FECO?
Full Extract Cannabis Oil is a more general term that describes:
- Any full-spectrum cannabis extract
- Oil that contains the complete range of cannabinoids, terpenes, and plant compounds
- Various extraction methods can be used
- Focus on preserving the entourage effect
Key Differences
Extraction Method
| Aspect | RSO | FECO | |--------|-----|------| | Traditional Solvent | Isopropyl alcohol | Food-grade ethanol | | Modern Methods | Food-grade ethanol | Ethanol, CO2, or combination | | Temperature | Room temperature | Often uses heat assistance |
Purity Standards
FECO often implies stricter quality control:
- Lab-tested for cannabinoid content
- Verified solvent removal
- Third-party testing for contaminants
- Consistent potency between batches
Terminology in the Market
In today's market:
- RSO often carries historical connotations and may refer to home-made or less regulated products
- FECO typically indicates professionally produced, lab-tested extracts
- Many producers use FECO to distance from unregulated RSO production
Similarities Between RSO and FECO
Despite their differences, RSO and FECO share many characteristics:
- Full-spectrum nature - Both contain the complete cannabinoid profile
- High potency - Typically 60-90% total cannabinoids
- Entourage effect - Both preserve terpenes and minor cannabinoids
- Similar appearance - Dark, viscous oil
- Administration methods - Can be used orally, sublingually, or topically
Which Should You Choose?
Choose RSO if:
- You prefer traditional extraction methods
- You're making your own extracts at home
- You want a more affordable option
- Historical authenticity matters to you
Choose FECO if:
- You want guaranteed lab testing
- Consistent dosing is important
- You prefer professionally produced products
- Purity and safety are top priorities
Quality Indicators for Both
Regardless of whether a product is labeled RSO or FECO, look for:
- Certificate of Analysis (COA) from a third-party lab
- Full cannabinoid profile listing
- Terpene content information
- Pesticide and contaminant testing
- Solvent residue testing
The Entourage Effect
Both RSO and FECO are valued for preserving the entourage effect. This phenomenon occurs when:
- Multiple cannabinoids work together synergistically
- Terpenes enhance and modify cannabinoid effects
- Minor compounds contribute to overall efficacy
- The whole plant extract is more effective than isolated compounds
Conclusion
While RSO and FECO are often used interchangeably, understanding their subtle differences helps you make informed decisions. In modern markets, FECO typically represents a higher quality standard with professional lab testing, while RSO carries historical significance and is sometimes associated with home production. Regardless of terminology, always prioritize lab-tested products from reputable sources.
