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Micellar Casein Unflavored

California Gold Nutrition SPORT
4.6
★ ★ ★ ★ ★
(2774 ratings)
Calcium 650 mg
Protein 25 Gram(s)
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Score75
A clean, protein-dense casein powder offers useful calcium and slow digestion, with cost, supply length, and calcium clarity as drawbacks.
How scoring works
Quantity:16 Ounce(s) • (15 servings)
Goals:
Bone Health

Score 75

A clean, protein-dense casein powder offers useful calcium and slow digestion, with cost, supply length, and calcium clarity as drawbacks.
How scoring works
$27.82($1.85 per serving)
iHerb
$ 27.82
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Analysis

Micellar casein provides a substantial slow-digesting protein amount with almost no fat or carbohydrate. The unflavored format is easy to mix into varied foods and drinks.

Calcium adds meaningful bone-supportive nutrition, but its chemical form is not disclosed. The amount is slightly above the most efficient single-dose range and could be divided if the serving format allows.

The clean macro profile and high protein density are strong practical features. A short supply and high serving cost reduce value for ongoing use.

Who is it for
  • Adults seeking slow-digesting dairy protein
  • Users wanting low-carbohydrate casein
  • People who tolerate milk protein
Best for
  • Evening protein intake
  • Between-meal protein
  • Bone-supportive nutrition

Pros

  • Substantial protein
  • Micellar casein
  • Very low fat and carbohydrate
  • Large calcium contribution

Cons

  • Calcium form is not identified
  • Calcium is high for one dose
  • Short supply
  • High serving cost

Warnings

  • Avoid the powder if you have a milk allergy because casein is a milk protein.
  • Separate the calcium-containing serving from levothyroxine and tetracycline or quinolone antibiotics as directed for those medicines.

Nutrient quality

88 Highest impact

A substantial micellar casein amount provides focused, slow-digesting protein. High calcium and missing sourcing detail leave modest limitations.

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Ingredient transparency

77 High impact

Some core nutrition amounts are clear enough to evaluate. Missing complete ingredients, use directions, or blend details create meaningful gaps.

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Customer satisfaction

70 High impact

Aggregate satisfaction data are favorable and supported by substantial volume. Specific firsthand comments were not supplied, leaving repeated complaints and purpose fit uncertain.

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Value for money

61 Moderate impact

Formula weaknesses limit value for routine use. Better-balanced or more transparent alternatives are likely to be more practical.

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Goals

Bone Health
Impact
Highest effect
A- Goal FitB Strength of SupportA- CoverageA+ Formula Quality
Calcium · 650 mgVitamin C · mcg

Casein protein supports the organic bone matrix, while the substantial calcium amount supplies raw mineral material. The calcium source is not identified and the amount slightly exceeds the most efficient single-dose range.

The simple powder offers unusually strong protein-and-mineral depth despite lacking vitamin D or K. Micellar casein is a milk protein, so the powder is unsuitable for people with a milk allergy.

Study evidence
Calcium Supportive 144 studies

Ingredients

IngredientAmount per serving
Calories
110 Calorie(s)
Total Fat
0 Gram(s)
Cholesterol
20 mg
Sodium
35 mg
Total Carbohydrates
1 Gram(s)
Protein
25 Gram(s)
Vitamin C
0 mcg
Calcium
650 mg
Iron
0 mg
Potassium
0 mg
Gluten Free Adults 18–50
Report overview
Calcium · 650 mg OverallScore42
F Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

The serving supplies a substantial calcium amount alongside protein, but the calcium source is not identified, leaving absorption quality uncertain. Its 650 mg dose sits slightly above the preferred per-serving range, and the high serving cost makes it poor value when judged as a calcium source. Micellar casein is a milk protein, so the powder is unsuitable for people with a milk allergy.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Calcium supplementation during pregnancy and maternal and offspring bone health: a systematic review and meta-analysis.
    Tihtonen K; Korhonen P; Isojärvi J; Ojala R; Ashorn U; Ashorn P; Tammela O · Annals of the New York Academy of Sciences · 2022
    Meta-analysis1,566 participants7 studies pooledBone Health forCalcium
  2. Calcium supplementation and bone mineral density in postmenopausal women using estrogen replacement therapy.
    Haines CJ; Chung TK; Leung PC; Hsu SY; Leung DH · Bone · 1995
    Randomized trialBone Health forCalcium
  3. Bone turnover and the response to alendronate treatment in postmenopausal osteoporosis.
    Gonnelli S; Cepollaro C; Pondrelli C; Martini S; Montagnani A; Monaco R; Gennari C · Calcified tissue international · 1999
    Randomized trial100 participantsBone Health forCalcium
  4. Associations of dietary calcium intake with metabolic syndrome and bone mineral density among the Korean population: KNHANES 2008-2011.
    Kim MK; Chon SJ; Noe EB; Roh YH; Yun BH; Cho S; Choi YS; Lee BS; Seo SK · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2018
    Cross-sectional study14,705 participantsBone Health forCalcium
  5. Treatment with alendronate plus calcium, alendronate alone, or calcium alone for postmenopausal low bone mineral density.
    Bonnick S; Broy S; Kaiser F; Teutsch C; Rosenberg E; DeLucca P; Melton M · Current medical research and opinion · 2007
    Randomized trial701 participantsBone Health forCalcium
  6. Calcium and osteoporosis.
    Nordin BE · Nutrition (Burbank, Los Angeles County, Calif.) · 1998
    Meta-analysis20 studies pooledBone Health forCalcium
  7. Dietary calcium intake protects women consuming oral contraceptives from spine and hip bone loss.
    Teegarden D; Legowski P; Gunther CW; McCabe GP; Peacock M; Lyle RM · The Journal of clinical endocrinology and metabolism · 2005
    Randomized trial154 participantsBone Health forCalcium
  8. Relationship between bone mineral density changes and risk of fractures among patients receiving calcium with or without vitamin D supplementation: a meta-regression.
    Rabenda V; Bruyère O; Reginster JY · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2011
    Meta-analysis47,365 participants15 studies pooledBone Health forCalcium
  9. Calcium supplementation provides an extended window of opportunity for bone mass accretion after menarche.
    Rozen GS; Rennert G; Dodiuk-Gad RP; Rennert HS; Ish-Shalom N; Diab G; Raz B; Ish-Shalom S · The American journal of clinical nutrition · 2003
    Randomized trial100 participantsBone Health forCalcium
  10. Effect of milk and calcium supplementation on bone density and bone turnover in pregnant Chinese women: a randomized controlled trail.
    Liu Z; Qiu L; Chen YM; Su YX · Archives of gynecology and obstetrics · 2011
    Randomized trial36 participantsBone Health forCalcium
  11. What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? A systematic review and meta-analysis.
    Manoj P; Derwin R; George S · International journal of older people nursing · 2023
    Meta-analysis12,620 participants7 studies pooledBone Health forCalcium
  12. Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
    Storm D; Eslin R; Porter ES; Musgrave K; Vereault D; Patton C; Kessenich C; Mohan S; Chen T; Holick MF; Rosen CJ · The Journal of clinical endocrinology and metabolism · 1998
    Randomized trial60 participantsBone Health forCalcium
  13. The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
    Prince R; Devine A; Dick I; Criddle A; Kerr D; Kent N; Price R; Randell A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1995
    Randomized trial168 participantsBone Health forCalcium
  14. The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
    Rajatanavin R; Chailurkit L; Saetung S; Thakkinstian A; Nimitphong H · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Randomized trial404 participantsBone Health forCalcium
  15. Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
    Bonjour JP; Carrie AL; Ferrari S; Clavien H; Slosman D; Theintz G; Rizzoli R · The Journal of clinical investigation · 1997
    Randomized trial149 participantsBone Health forCalcium