Home Ingredients Morosil® (Moro Red Orange Extract)
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Morosil® (Moro Red Orange Extract)

Citrus sinensis (L.) Osbeck — Moro cultivar
Evidence Level
Moderate
3 Clinical Trials
4 Documented Benefits
3/5 Evidence Score

Standardized extract from Sicilian Moro red blood orange juice. Studied at 400 mg/day for body composition support — body weight, BMI, waist/hip circumference reductions documented in 12-week and 6-month placebo-controlled RCTs.

Studied Dose PIVOTAL DOSE: 400 mg/day Morosil® dry extract. CARDILE 2015: × 12 wk. BRISKEY 2022: × 6 mo + diet/exercise. CAMPOS 2025 META 3 RCTs n=252 same 400 mg. KEGELE 2019: 0.5-1 g dried extract.
Active Compound Anthocyanins (cyanidin 3-glucoside dominant), hydroxycinnamic acids, flavone glycosides, ascorbic acid

Benefits

Body weight and BMI reduction

Briskey 2022 (6-month RCT, ITT n=136) showed 4.2% body weight reduction with Morosil vs 2.2% placebo (p=0.015) and significant BMI improvement (p=0.019). Cardile 2015 (12-week RCT, n=60) reported significant reductions in body weight, BMI, waist and hip circumference vs placebo. The Campos 2025 meta-analysis (3 RCTs, n=252) calculated a pooled mean difference of -2.08 kg body weight (95% CI -3.50 to -0.67, p<0.01) and -1.53 kg fat mass (p=0.03).

Supported by Trial 3, Trial 1

Waist and hip circumference

Briskey 2022 found waist circumference reductions of 3.9 cm in active group vs 1.7 cm placebo (p=0.017) and hip circumference 3.4 cm vs 2.0 cm (p=0.049). Improvements in central adiposity were a consistent finding across both pivotal RCTs.

Supported by Trial 1

Reduced visceral and subcutaneous fat

DXA-measured fat distribution improved significantly in the Morosil group in Briskey 2022 — visceral fat p=0.018, subcutaneous fat p=0.006, total fat mass p=0.012. This suggests the extract preferentially affects metabolically active fat depots.

Supported by Trial 1

Antioxidant phytocomplex

Anthocyanin content (~140 mg/L in Moro juice) — particularly cyanidin 3-glucoside — provides robust antioxidant capacity. Hydroxycinnamic acids and flavone glycosides contribute additional radical-scavenging activity beyond what's expected from vitamin C alone.

Supported by Trial 3

Mechanism of action

1

Inhibits adipogenesis

Red orange standardized extract inhibits 3T3-L1 preadipocyte differentiation by downregulating adipogenic gene expression and modulating adiponectin secretion and leptin release. This affects the formation of new fat cells rather than just shrinking existing ones.

2

PPAR-α activation and lipid homeostasis

Salamone 2012 (mouse model) found Moro juice exerts hepatoprotective effects via changes in expression of enzymes involved in lipid homeostasis — the proposed mechanism is promotion of lipolysis and lipid peroxidation through PPAR-α induction with simultaneous suppression of lipogenesis via Liver X Receptor downregulation.

3

Anthocyanin-mediated metabolic modulation

Cyanidin 3-glucoside influences antioxidant, anti-inflammatory, and metabolic pathways. Animal studies show anthocyanin-rich Moro juice limits body weight gain, enhances insulin sensitivity, and decreases serum triglycerides and total cholesterol — even when overall energy intake is not reduced.

Clinical trials

1
Briskey 2022 — 6-Month Morosil RCT (Pivotal Trial)
PubMed

Single-site, double-blind, randomized, placebo-controlled study (Briskey, Malfa, Rao 2022, Nutrients 14(3):427). Conducted in Brisbane, Australia between November 2018 and June 2020.

Overweight but otherwise healthy adults aged 20-65 years. ITT analysis: n=136 (active n=65, placebo n=71). All participants combined supplementation with calorie-controlled diet and exercise.

After 6 months: body mass 4.2% reduction vs 2.2% placebo (p=0.015), BMI improvement (p=0.019), hip circumference 3.4 vs 2.0 cm reduction (p=0.049), waist 3.9 vs 1.7 cm (p=0.017), fat mass (p=0.012), visceral fat (p=0.018), subcutaneous fat (p=0.006). Liver toxicity safety markers stayed within normal range throughout. Effects emerged at month 3 and continued through month 6.

2
Cardile 2015 — Foundational Morosil 12-Week RCT
PubMed

Randomized, placebo-controlled, double-blind trial (Cardile, Graziano, Venditti 2015, Natural Product Research 29(24):2256-2260, doi:10.1080/14786419.2014.1000897). The first dedicated human trial of Morosil® standardized extract.

60 overweight healthy adult volunteers (BMI 25-35), aged 20-65. Randomized to Morosil 400 mg/day or placebo for 12 weeks.

Significant reduction in BMI within 4 weeks (p<0.05). At 12 weeks, body weight, BMI, waist and hip circumference were all significantly different from placebo group. No significant changes occurred in placebo group at any time point. Established the foundational clinical evidence for Morosil branded extract.

3
Campos 2025 — Moro Orange Extract Systematic Review and Meta-Analysis
PubMed

PRISMA systematic review and meta-analysis searching PubMed, Embase, and Cochrane (Campos, Ruelas, da Silva, de Lima, Holanda 2025).

3 RCTs included, total 252 overweight and obese adult participants. Studies conducted in Italy, Australia, and Brazil with 400 mg/day Morosil extract or 0.5–1 g Citrus sinensis dried extract.

Moro orange juice extract significantly reduced body weight by 2.08 kg vs placebo (95% CI -3.50 to -0.67, I²=0%, p<0.01) and fat mass by 1.53 kg (95% CI -2.92 to -0.15, I²=0%, p=0.03). Waist circumference showed heterogeneous results (-3.25 cm, I²=99%, p=0.05). No significant effects on lean mass. GRADE assessment showed low to very low certainty of evidence. Authors concluded Moro orange extract may result in weight and fat mass reduction in overweight/obese adults.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated across the published RCTs.
Briskey 2022 specifically monitored liver toxicity markers (ALT, AST, GGT, ALP, bilirubin) and found all values stayed within normal range at month 3 and month 6 in both groups.
Citrus allergy is a contraindication — though uncommon, individuals allergic to oranges should avoid.
Mild GI symptoms (nausea, transient discomfort) reported occasionally with citrus extracts in general.
Anthocyanins may stain teeth or stool a reddish color — cosmetic only, not a safety issue.

Important Drug interactions

May interact with grapefruit-juice-sensitive medications via the same CYP3A4 inhibition class (e.g., statins, calcium channel blockers, immunosuppressants) — though Moro orange's CYP inhibition profile differs from grapefruit. Discuss with prescriber if on statins.
Theoretical caution with anti-diabetic medications — improved insulin sensitivity in animal models could potentially compound hypoglycemic effects.
Potential additive effects with weight-loss medications including GLP-1 agonists; not a clinically documented interaction but warrants monitoring.
No documented interactions with anticoagulants in the published trials.

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Frequently asked questions about Morosil® (Moro Red Orange Extract)

What is the recommended dosage of Morosil® (Moro Red Orange Extract)?

The clinically studied dose for Morosil® (Moro Red Orange Extract) is PIVOTAL DOSE: 400 mg/day Morosil® dry extract. CARDILE 2015: × 12 wk. BRISKEY 2022: × 6 mo + diet/exercise. CAMPOS 2025 META 3 RCTs n=252 same 400 mg. KEGELE 2019: 0.5-1 g dried extract.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Morosil® (Moro Red Orange Extract) used for?

Morosil® (Moro Red Orange Extract) is studied for body weight and bmi reduction, waist and hip circumference, reduced visceral and subcutaneous fat. Briskey 2022 (6-month RCT, ITT n=136) showed 4.2% body weight reduction with Morosil vs 2.2% placebo (p=0.015) and significant BMI improvement (p=0.019).

Are there side effects from taking Morosil® (Moro Red Orange Extract)?

Reported potential side effects may include: Generally well-tolerated across the published RCTs. Briskey 2022 specifically monitored liver toxicity markers (ALT, AST, GGT, ALP, bilirubin) and found all values stayed within normal range at month 3 and month 6 in both groups. Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Does Morosil® (Moro Red Orange Extract) interact with medications?

Known drug interactions may include: May interact with grapefruit-juice-sensitive medications via the same CYP3A4 inhibition class (e.g., statins, calcium channel blockers, immunosuppressants) — though Moro orange's CYP inhibition profile differs from grapefruit. Discuss with prescriber if on statins. Consult a pharmacist or healthcare provider if you take prescription medications.

Is Morosil® (Moro Red Orange Extract) good for weight management?

Yes, Morosil® (Moro Red Orange Extract) is researched for Weight Management support. Briskey 2022 (6-month RCT, ITT n=136) showed 4.2% body weight reduction with Morosil vs 2.2% placebo (p=0.015) and significant BMI improvement (p=0.019). Cardile 2015 (12-week RCT, n=60) reported significant reductions in body weight, BMI, waist and hip circumference vs placebo.