Source Naturals Theanine Serene with Magnesium - 30 Vegetarian Tablets

Brand: Source Naturals
Category: Amino Acids
Recorded price: $7.53; 8 Sep 2026
Price per serving: $0.50

Supplement facts

Serving size: 2 Tablet(s)
Servings per container: 15

Ingredient	Amount per serving	% daily value
Calories	5	—
Total Carbohydrates	1 g	1%
Magnesium	300 mg	75%
GABA	500 mg	—
Taurine	450 mg	—
L-Theanine	200 mg	—
Holy Basil Leaf Extract	100 mg	—

Other ingredients

Sorbitol
Stearic Acid
modified Cellulose Gum
Silica

Directions on the label

2 tablets daily.

Label data from the Dietary Supplement Label Database.

Label data as of 10 Sep 2026

Product score

81.3 / 100Very good

Category average: 71.1 / 100
Average for similar products: 81.3 / 100

This is a convenient two-tablet daily calming blend with meaningful amounts of magnesium, L-theanine, GABA, taurine, and holy basil, although the magnesium form is not disclosed.

Scoring criteria

Quantity
100 / 100
The labeled two-tablet routine supplies meaningful commonly used amounts of each listed co-primary ingredient for a general calming formula.
Form
65 / 100
L-theanine, GABA, taurine, and holy basil are identified, but the magnesium salt is not declared, leaving a relevant mineral-form uncertainty.
Convenience
85 / 100
The label directs two tablets daily, and the container provides 30 tablets.
Label accuracy
100 / 100
The complete Supplement Facts panel matches a high-confidence FDA label record without an established amount contradiction.
Formula balance
75 / 100
The ingredients are present together at generally compatible labeled amounts, but no established added synergy or special balancing advantage is demonstrated.
Purity
75 / 100
The label lists ordinary excipients and provides no product-specific contaminant or quality-control evidence.
Cofactors
0 / 100
No separate supportive cofactor is declared because the listed ingredients are assessed as co-primary components of the formula.