Understanding FECO Delivery Options
Full Extract Cannabis Oil (FECO) can be administered in various forms. Tinctures are liquid extracts used under the tongue for fast absorption. Suppositories are solid forms inserted rectally, offering localized and systemic support without a psychoactive high. Both delivery methods preserve the full-spectrum profile of cannabinoids and terpenes to activate the Entourage Effect.
Bioavailability: How Much Is Absorbed?
Bioavailability determines how much of the cannabinoid dose reaches your bloodstream. According to a 2023 summary by DocMJ, rectal suppositories bypass the liver and deliver approximately 25–50% absorption (NIH). Sublingual tinctures offer 13–19% absorption, as noted in peer-reviewed reviews (NIH, 2022). This makes suppositories more efficient for higher-dose needs.
Onset and Duration
Tinctures typically take effect within 15–45 minutes and last 3–6 hours. Suppositories start in 10–30 minutes and provide effects for 4–8 hours. For patients managing conditions like inflammatory bowel disease or pelvic pain, suppositories offer localized benefit with sustained absorption.
Choosing Based on Conditions
Suppositories are ideal for:
- GI issues (IBD, Crohn’s, ulcerative colitis)
- Pelvic pain or menstrual cramps
- Post-surgical recovery without cognitive impairment
Tinctures are best for:
- Anxiety, sleep issues, or breakthrough pain
- Seizure management
- Daytime use where rapid onset is needed
Pros and Cons of Each
Suppositories:
- Pros: Higher bioavailability, minimal psychoactivity, localized relief
- Cons: Requires comfort with rectal administration
Tinctures:
- Pros: Easy to dose, discreet, fast-acting
- Cons: Lower bioavailability if swallowed, may irritate oral tissue
Usage and Dosing Tips
Always start low. For tinctures, begin with 1–2.5 mg sublingually, hold under tongue for 60 seconds. For suppositories, use clean hands and gently insert while lying down. Effects vary by body type, so titrate every 3–5 days. King Harvest offers personalized consultations for dosing and product selection.
Frequently Asked Questions
Which method absorbs better?
Suppositories offer 25–50% absorption, compared to 13–19% for tinctures.
Can I use both methods?
Yes, many patients use tinctures for day and suppositories at night or for targeted support.
Which has fewer side effects?
Suppositories often reduce psychoactivity, while tinctures may be more stimulating due to THC sublingual absorption.
How do I know which is right for me?
It depends on your condition. Use King Harvest’s consultation service to build a plan with expert guidance.
Disclaimer: This article is for educational purposes only and does not substitute professional medical advice. Consult your physician before beginning a cannabis regimen.
Byline: Lee Simpson is the founder of King Harvest, a California-based medical cannabis collective specializing in full-spectrum oils for chronic conditions.
Author Bio: Lee Simpson has spent over a decade guiding patients with personalized cannabis protocols. His work supports natural, full-spectrum healing with lab-tested products and a patient-first mission.

