BioStacks
Best for
Ingredients (3)
Lactium Casein Hydrolysate
100%Dose
175 mg
Target
150–300 mg
Form
—
L-Theanine
50%Dose
50 mg
Target
100–250 mg
Form
—
Vitamin D
12%Dose
120 IU
Target
1000–5000 IU
Form
Premium
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Hypoallergenic Plant FiberFiller
Plant-derived cellulose fiber used as a hypoallergenic filler, common in Thorne and Pure Encapsulations products
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
How to Take It
Best taken in the evening
The Theanine in it is what pulls this toward the evening. Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
With a meal containing fat
On the label
As a dietary supplement, adults, take 1 capsule daily or as directed by your healthcare practitioner. Consult your healthcare beyond 1 month.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$74.00
Pricier than 96% of 122 theanine supplements
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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.