This gummy delivers **Melatonin** at 3mg — solidly within the 0.5–5mg range used in clinical research for sleep onset and circadian rhythm support. That's the dose doing the heavy lifting here, and it's well-placed for helping you fall asleep faster.

**L-Theanine** at 100mg sits right at the bottom of the studied range (100–250mg), giving you a baseline dose for promoting relaxation before bed. The combination with melatonin makes sense — theanine calms without sedating, while melatonin signals your body it's time to sleep.

The herbal extras — **Chamomile**, **Passionflower**, and **Lemon Balm** — are each dosed at 16–17mg, which is a fraction of the amounts used in clinical research (chamomile studies use 500–1,500mg of extract, passionflower 250–500mg, lemon balm 300–600mg). At these doses, you're getting trace amounts that are unlikely to contribute meaningfully to sleep support. The melatonin and theanine are carrying this product.

BioStacks
OLLY

Sleep Blackberry Zen

2 Gummies · 35 servings · $0.51/serving

44 / 100Average

Score Breakdown

Formulation
82
Safety
54
Final score
44/100

Ingredients (5)

Melatonin3 mg

Optimal dose

L-Theanine100 mg

Within effective range

Chamomile extract17 mg

34% of effective dose

Passionflower extract17 mg

7% of effective dose

Lemon Balm extract16 mg

5% of effective dose

Nutrition

Calories and macros.

  • Calories15 Calorie(s)
  • Total Carbohydrates3 Gram(s)
    • Total Sugars2 Gram(s)
  • Protein1 Gram(s)

Other Ingredients

Fillers, coatings, and additives

7Safe2Caution1Avoid

Caramel ColorColor

Avoid

SucroseSweetener

Caution

Glucose SyrupSweetener

Caution

Natural FlavorsFlavor

Safe

Carnauba WaxCoating

Safe

Citric AcidAcidulant

Safe

GelatinCapsule

Safe

PectinGelling Agent

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.