This product contains 3 disputed ingredients: Cocoa Extract, Tryptophan, 5-HTP. Evidence is mixed or doses are undisclosed — see Ingredients below for details.
SiS Rest+ Juice
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Used for: sleep and recovery
Summary
Science in Sport SiS Rest+ Juice is a sleep supplement.
Strengths
- Batch-tested for banned substances (Informed Sport).
- Clear, complete labeling.
Weaknesses
- Limited research support for key ingredients.
Why it scores 61
How scoring works →Independent analysis No brand partnerships
The details
Cross-referenced with PubMed & Examine.com
Tart cherry has good evidence for reducing muscle soreness after hard exercise and some for sleep quality, mostly from studies using juice or concentrate.
3g of glycine before bed has improved subjective sleep quality in small trials; lower doses are less studied.
Magnesium supports muscle and nerve function and sleep; many athletes fall short of the recommended intake. Supplementing helps mainly when intake is low. Glycinate and malate forms are well absorbed and gentle on the stomach.
Cocoa flavanols are studied for blood flow and cognition; effects on sleep and recovery are unclear.
Tart cherry has good evidence for reducing muscle soreness after hard exercise and some for sleep quality, mostly from studies using juice or concentrate.
An amino acid the body uses to make serotonin and melatonin; small studies suggest it may help sleep, but evidence is limited.
An amino acid from tea that promotes relaxation without sedation; 200mg is the typical studied dose and may help sleep quality.
A precursor to serotonin and melatonin; small studies suggest sleep and mood effects, but evidence is limited. Avoid combining with antidepressants.
1 of 5 standards Pello tracks · Third-party tested for banned substances
Tested for sport
- NSF Certified for Sport
- Informed SportListed by The Feed
Every batch is tested for substances banned in sport before it's released for sale.
Check in the Informed Sport product search ↗ - Cologne List
Food & sourcing
- USDA Organic
- Non-GMO Project Verified
Diet claims
- Vegan: not stated
Brand or retailer label claim, not a certification.
- Gluten-free: yes
Brand or retailer label claim. In the US a gluten-free label means under 20 ppm gluten.
- Dairy-free: yes
From the allergen list, where one is available.
Certifications are as listed on the product's page at The Feed. NSF Certified for Sport is also checked against NSF's own database. Certifications can lapse, so check the certifier's search before you rely on one, especially if you're drug tested.
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