L-Citrulline vs Brown Rice Protein
Amino Acid vs Protein · evidence-backed comparison
- • L-Citrulline has the stronger evidence base (moderate (some rcts)).
- • L-Citrulline has the broader effect profile across the 9 effect categories.
- • L-Citrulline is cheaper per serving ($0.65 vs $0.70).
- • L-Citrulline has higher bioavailability (better absorption).
Side-by-side traits
| Trait | L-Citrulline | Brown Rice Protein |
|---|---|---|
Category | Amino Acid | Protein |
Active compound | L-citrulline (or citrulline malate 2:1) | Hypoallergenic rice protein |
Form available | Powder, Capsule | Powder |
Source | microbial | plant |
Typical dose | 6–8 g pre-workout (citrulline malate 8 g) | 30–48 g per serving |
Dose range | 6–8 g | 30–48 g |
Loading protocol | — | — |
Best taken with | water, empty stomach | blended with pea or fruit |
Best time of day | pre-workout | post-workout |
Bioavailability How efficiently the body absorbs and utilizes the compound. | Very High (5/5) | Moderate (3/5) |
Onset time | Acute: 60 min | Acute: 60–90 min |
Half-life | ~1 hour | — |
Evidence level Quality and quantity of human research. | Moderate (some RCTs) | Limited (small studies) |
Overall effect Subjective effect magnitude. | Moderate (3/5) | Moderate (3/5) |
Muscle / strength | Moderate (3/5) | Moderate (3/5) |
Physical energy | High (4/5) | Low (2/5) |
Focus / cognition | Low (2/5) | Very Low (1/5) |
Mood / stress | Low (2/5) | Low (2/5) |
Sleep quality | Very Low (1/5) | Very Low (1/5) |
Immunity | Very Low (1/5) | Low (2/5) |
Recovery Post-exercise recovery support. | Moderate (3/5) | Moderate (3/5) |
Longevity / healthspan | Low (2/5) | Low (2/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | Very High (5/5) | Very High (5/5) |
Price per serving Approximate USD per typical daily dose. | $0.65 | $0.70 |
Vegan friendly | Yes | Yes |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About L-Citrulline
Pre-workout staple for vasodilation and reduced muscle soreness. Raises plasma arginine more efficiently than arginine itself.
About Brown Rice Protein
Hypoallergenic vegan protein, low in lysine but high in cysteine. Best blended 70/30 with pea protein for a complete amino profile.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
L-Citrulline safety
Common side effects:
- • Generally none
Avoid if:
- • Severe hypotension
- • Sildenafil interactions
Drug interactions:
- • Sildenafil
- • Blood pressure meds
Brown Rice Protein safety
Common side effects:
- • Gritty texture
- • Heavy metal concerns (buy 3rd-party tested)
Common uses
- • Pre-workout pump
- • Endurance
- • Reduced DOMS
Stacks well with: Beta-Alanine, Creatine Monohydrate, Caffeine
Common uses
- • Allergy-friendly protein
- • Vegan blends
Stacks well with: Pea Protein
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Medical disclaimer
SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements — especially if you are pregnant, breastfeeding, take prescription medication, or have a chronic condition.