Product Image

Collagen Fit

Thorne
4.7
★ ★ ★ ★ ★
(1055 ratings)
Niacin 125 mg
Betaine Anhydrous 50 mg
Protein 14 Gram(s)
Product Image
Score71
Meaningful collagen protein and strong disclosure are useful, but incomplete protein, modest calories, underdosed extras, and high cost make it a secondary weight-gain option.
How scoring works
Quantity:17 Ounce(s) • (30 servings)
Goals:
Weight Gain

Score 71

Meaningful collagen protein and strong disclosure are useful, but incomplete protein, modest calories, underdosed extras, and high cost make it a secondary weight-gain option.
How scoring works
$56.00($1.86 per serving)
Vitacost
$ 61.63
Vitacost
$ 61.63
Walmart
$ 56.00
Pure Formulas
$ 56.00
iHerb
$ 56.00
Report prices

Analysis

Fifteen grams of bovine collagen peptides supply 14 grams of protein in a clearly disclosed serving. That amount can add to daily protein intake and may support connective tissue, but collagen lacks the amino-acid balance of a complete, leucine-rich protein.

Nicotinamide riboside and trimethylglycine are relevant forms for cellular-energy and methylation pathways. Their 125 mg and 50 mg amounts are below common targeted amounts, so they add breadth rather than strong fitness support.

The powder contributes only modest calories and should complement, not anchor, a weight-gain plan. Strong transparency helps, but the high serving cost makes a complete protein powder a more practical main choice for muscle-focused gain.

Who is it for
  • Adults wanting collagen peptides alongside their regular protein intake
  • People seeking connective-tissue support while increasing calories modestly
Best for
  • Supplemental collagen protein
  • Adding collagen to an existing complete-protein diet

Pros

  • Provides 15 grams of bovine collagen peptides
  • Clearly discloses all active amounts
  • Simple, focused powder formula

Cons

  • Collagen is not a complete muscle-building protein
  • Nicotinamide riboside and trimethylglycine are lightly dosed
  • Serving cost is high

Warnings

  • People with a bovine protein allergy should avoid the bovine collagen peptides

Nutrient quality

75 High impact

Collagen peptides provide meaningful protein, while the two supporting actives are underdosed for their usual purposes. The incomplete protein and modest energy content limit fit for weight gain despite a safe dose profile.

Ingredient transparency

80 Highest impact

Active amounts and forms are clearly disclosed with no hidden blend. Missing preparation guidance and a complete excipient list prevent full label transparency.

Customer satisfaction

74 High impact

The supplied aggregate satisfaction metric is strong and supported by meaningful feedback volume. No feedback excerpts or complaint themes are supplied, so specific experience patterns cannot be verified.

Value for money

51 Moderate impact

A substantial collagen serving provides some value, but the supporting actives and energy content add limited weight-gain benefit. High serving cost and incomplete protein quality weaken competitiveness against complete protein powders.

Report analysis

Goals

Weight Gain
Weight Gain
Impact
High effect
C+ Goal FitB- Strength of SupportC- CoverageB Formula Quality

Collagen peptides provide a meaningful protein amount and modest calories that can contribute to daily intake. Collagen is incomplete and less effective for muscle protein synthesis than a complete, leucine-rich protein.

The betaine amount is far below performance dosing, so it adds little training support. The powder can complement a calorie surplus but should not be the main protein source for muscle gain.

Study evidence
Betaine Anhydrous Disputed 13 studies

Ingredients

IngredientAmount per serving
Calories
60 Calorie(s)
Protein
14 Gram(s)
Sodium
10 mg
Collagen Peptides (Bovine)
 15 Gram(s)
Nicotinamide Riboside Hydrogen Malate
125 mg
Betaine Anhydrous (Trimethylglycine)
 50 mg
Gluten Free Adults 18–50
Report overview
Niacin · 125 mg OverallScore66
B+ Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyF Value

Nicotinamide riboside is a direct NAD+ precursor with clear relevance to cellular energy goals. The 125 mg amount is below the preferred research-aligned range, and no stabilized or enteric delivery is disclosed. The serving cost is high for the amount of nicotinamide riboside provided.

View ingredientView products
Betaine Anhydrous (Trimethylglycine) · 50 mg OverallScore63
A+ Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyD- Value

Clearly identified trimethylglycine removes uncertainty about the betaine form. Its amount is too small for a fitness-oriented serving, so it is unlikely to contribute much to hydration or power goals. Collagen and a nicotinamide riboside precursor add broader value, but betaine-specific efficiency remains weak.

View ingredientView products
Loading alternative details
69 Performance

Collagen Plus Passion Berry Flavored

Thorne
<p>A substantial collagen amount provides a stronger connective-tissue and protein contribution than the original. The clearer ingredient focus improves on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although collagen remains incomplete protein, calories are low, and conflicting protein disclosure weakens confidence for weight gain.</p>
79 Performance

ResveraCel

Thorne
<p>Nicotinamide riboside, phytosome quercetin, trans-resveratrol, and betaine form a focused healthy-aging formula. The clearer ingredient focus improves on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although the product has little direct weight-gain value and cannot replace adequate calories or complete protein.</p>
72 Performance

NiaCel 400

Thorne
<p>A meaningful nicotinamide-riboside amount and clearly identified betaine create a compact cellular-energy formula. The clearer ingredient focus improves on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although direct weight-gain support is weak, and the product cannot replace calories or complete protein.</p>
72 Budget

NiaCel 400

Thorne
<p>A higher serving cost makes this option more economical while a meaningful nicotinamide-riboside amount and clearly identified betaine create a compact cellular-energy formula. Direct weight-gain support is weak, and the product cannot replace calories or complete protein.</p>
70 Budget

Brain Factors

Thorne
<p>A higher serving cost makes this option more economical while nicotinamide riboside and coffee-fruit extract support cognitive and cellular-energy pathways. The formula aligns poorly with weight gain, betaine is very low, and the serving offers little direct goal-specific value.</p>
74 Budget

Advanced Absorption Mega B-Complex

Irwin Naturals
<p>A higher serving cost makes this option more economical while a broad B-vitamin profile with methylcobalamin supports energy metabolism and general nutrition. The product contributes little to weight gain, while duplicate entries and high vitamin B6 reduce long-term suitability.</p>
74 Value

Advanced Absorption Mega B-Complex

Irwin Naturals
<p>A broad B-vitamin profile with methylcobalamin supports energy metabolism and general nutrition at a higher serving cost. The quality-to-cost balance may improve on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although the product contributes little to weight gain, while duplicate entries and high vitamin B6 reduce long-term suitability.</p>
72 Value

NiaCel 400

Thorne
<p>A meaningful nicotinamide-riboside amount and clearly identified betaine create a compact cellular-energy formula at a higher serving cost. The quality-to-cost balance may improve on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although direct weight-gain support is weak, and the product cannot replace calories or complete protein.</p>
69 Value

Collagen Plus Passion Berry Flavored

Thorne
<p>A substantial collagen amount provides a stronger connective-tissue and protein contribution than the original at a higher serving cost. The quality-to-cost balance may improve on the original’s incomplete collagen protein, modest calories, underdosed supporting ingredients, and high serving cost, although collagen remains incomplete protein, calories are low, and conflicting protein disclosure weakens confidence for weight gain.</p>
Report alternatives

Sources

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

  1. Effects of betaine on body composition, performance, and homocysteine thiolactone.
    Cholewa JM; Wyszczelska-Rokiel M; Glowacki R; Jakubowski H; Matthews T; Wood R; Craig SA; Paolone V · Journal of the International Society of Sports Nutrition · 2013
    Randomized trial23 participantsWeight Gain forBetaine Anhydrous
  2. Maternal Betaine and Methylation Potential during Pregnancy Are Associated with Child Growth at Birth and Early Childhood: Results of the Chilean Maternal & Infant Cohort Study-II.
    Trujillo-González I; Barisione G; Bottiglieri T; Reyes M; Garmendia ML; Mujica-Coopman MF · The Journal of nutrition · 2026
    Cohort study150 participantsWeight Gain forBetaine Anhydrous
  3. Serum betaine is inversely associated with low lean mass mainly in men in a Chinese middle-aged and elderly community-dwelling population.
    Huang BX; Zhu YY; Tan XY; Lan QY; Li CL; Chen YM; Zhu HL · The British journal of nutrition · 2017
    Cohort study1,996 participantsWeight Gain forBetaine Anhydrous
  4. Dietary betaine intake is associated with skeletal muscle mass change over 3 years in middle-aged adults: the Guangzhou Nutrition and Health Study.
    Long JA; Zhong RH; Chen S; Wang F; Luo Y; Lu XT; Yishake D; Chen YM; Fang AP; Zhu HL · The British journal of nutrition · 2021
    Cohort study1,242 participantsWeight Gain forBetaine Anhydrous
  5. Effects of Betaine Supplementation on Markers of Metabolic Flexibility, Body Composition, and Anaerobic Performance in Active College-Age Females.
    Waldman HS; Bryant AR; McAllister MJ · Journal of dietary supplements · 2023
    Randomized trial23 participantsWeight Gain forBetaine Anhydrous