Douglas Labs Ultra Preventative X
Multivitamin Review


Douglas Labs Ultra Preventative X multivitamins

Douglas Laboratories Ultra Preventive X is ranked #3 in our comparison of over 100 popular multivitamin brands available on the market in North America. Below is our summary of the strong and weak points of this product, based on analysis conducted by the MultivitaminGuide.org team.

Product Strengths

  • Contains 67 nutrients: (the average multivitamin contains only 32 nutrients) making Ultra Preventive X one of the most comprehensive vitamin supplements on the market.
  • Natural nutrients: Contains natural beta carotene, vitamin E and vitamin B12 (methylcobalamin), which means that the nutrients can be more easily absorbed by your body.
  • High potency: The multivitamin has elevated amounts of all vitamins which makes it very potent and you are likely to see results from it more quickly.
  • Organic blend: Contains an organic fruit and vegetable blend, which adds extra beneficial nutrients to the standard vitamins and minerals.
  • Natural Folate:  Contains Metafolin, a natural form of Folate (vitamin B9) which is more readily absorbed by your body than conventional Folic Acid.

Product Weaknesses

  • No enteric coating:  Since the tablets and capsules are not enteric-coated certain nutrients may be degraded by the acid in your stomach, resulting in their incomplete absorption.
  • Bulky: 9 capsules or 6 tablets need to be taken on a daily basis, making it a bit less convenient to take.
  • Long-term use safety concern: Excessive amounts of vitamin A, equal to 300% of the Recommended Daily Allowance, may cause undesired side effects if taken over a long period of time.

The bottom line

Overall Ultra Preventive X by Douglas Labs is an excellent product and we recommended it for individuals who need a highly potent multivitamin in order to recover from an illness or by athletes with elevated requirements for vitamins and minerals.

Due to the very high amounts of vitamin A included, however we are hesitant to recommend this product for long terms use due to the risk of vitamin overdose, which can be associated with mild side effects such as dizziness, diarrhea, and stomach upset. Or in more extreme cases lung cancer and liver damage.

Also if you have a sensitive stomach, a multivitamin with enteric coating may work better for you.

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How does Douglas Labs Ultra Preventative X compare with other multivitamin brands?

MultivitaminGuide.org offers comparison between the Douglas Labs Ultra Preventative X multivitamins and of all major vitamin supplements available on the market.

Some of the unique aspects of this guide include comparison of the Douglas Labs Ultra Preventative X multivitamins with 100 other vitamin supplement products, including popular brands such as One-A-Day, GNC, Equate, Kirkland, Shaklee, Nature Made, NOW Foods, Melaleuca, Puritan’s Pride, Herbalife, TwinLab, and Walgreens.

The information on this site is the culmination of over 6 years of scientific research and analysis. Each of the reviewed products is evaluated against 4 key parameters, such as composition, bioavailability, potency and safety. Then each supplement is assigned a score from 0 to 10, which enables you to easily compare the effectiveness of different brands.

Ranking of all evaluated multivitamins

The table below provides a summary of the Effectiveness Scores of some of the more popular vitamin supplement brands available on the market, including the Douglas Labs Ultra Preventative X multivitamins.

Any vitamin supplement with a score that exceeds 8.0 is considered to be "excellent". For that reason, using a multivitamin product with a score of 8.0 or above is strongly advised.

RankManufacturerProduct Multivitamin Score
1 NATURELO Premium Supplements Whole Food Multivitamin Whole Food Multivitamin
by NATURELO Premium Supplements
9.8
2 Xtend-Life Natural ProductsTotal Balance Total Balance
by Xtend-Life
9.6
3 Douglas LaboratoriesUltra Preventive X Ultra Preventive X
by Douglas Labs
9.3
4 USANA Health SciencesHealthPak HealthPak
by USANA
8.9
5 Dr. MercolaWhole Food Multivitamin PLUS Whole Food Multivitamin PLUS
by Dr. Mercola
8.8
6 Shaklee Vitalizer Vitalizer
by Shaklee
8.7
7 Life Extension Life Extension Mix Life Extension Mix
by Life Extension
8.6
8 MetagenicsWellness Essentials Wellness Essentials
by Metagenics
8.5
9 Nutrilite (Amway)Double X Double X
by Nutrilite
8.3
10 Garden of LifeVitamin Code Vitamin Code
by Garden of Life
8.2
11 Source NaturalsLife Force Life Force
by Source Naturals
8.1
12 KarunaMaxxum 4 Maxxum 4
by Karuna
7.9
13 SolgarOmnium Omnium
by Solgar
7.8
14 Optimum NutritionOpti-Men Opti-Men
by Optimum Nutrition
7.7
15 Muscle PharmArmour-V Armour-V
by Muscle Pharm
7.6
16 Dr. Julian Whitaker'sForward Multi-Nutrient Forward Multi-Nutrient
by Dr. Julian Whitaker's
7.6
17 FreeLifeReverse! Reverse!
by FreeLife
7.2
18 Mountain Naturals of VermontSuperior Care Superior Care
by Mountain Naturals of Vermont
7.1
19 amniAdded Protection III Added Protection III
by amni
7.0
20 Purity ProductsPerfect Multi Focus Formula Perfect Multi Focus Formula
by Purity Products
7.0
21 Universal NutritionAnimal Pak Animal Pak
by Universal Nutrition
6.9
22 Doctor's NutritionMega Vites Mega Vites
by Doctor's Nutrition
6.8
23 DaVinci LaboratoriesSpectra Spectra
by DaVinci Laboratories
6.8
24 GNCGNC Mega Men Sport GNC Mega Men
by GNC
6.8
25 TwinLabDaily One Caps with Iron Daily One Caps with Iron
by TwinLab
6.7
26 FoodScience of VermontSuperior Care Superior Care
FoodScience of Vermont
6.6
27 Puritan's PrideHigh Potency Ultra Vita Time Release High Potency Ultra Vita Time Release
Puritan's Pride
6.5
28 Colgan InstituteFormula MCS Formula MCS
Colgan Institute
6.4
29 Rainbow LightWomen's One Multivitamin Advanced Nutritional System
by Rainbow Light
6.4
30 NOW FoodsMultiple Vitamins - Liquid Gels Multiple Vitamins - Liquid Gels
by NOW Foods
6.4
31 EASMulti-Blend Multi-Blend
by EAS
6.3
32 MannatechPhytoMatrix PhytoMatrix
by Mannatech
6.2
33 Nature's WayAlive! Whole Food Energizer Alive! Whole Food Energizer
by Nature's Way
6.1
34 Jean Carper'sStop Aging Now! Stop Aging Now!
by Jean Carper's
6.0
35 Natural FactorsMultiStart MultiStart
by Natural Factors
5.9
36 Advanced Physician's ProductsMaximum MultiVitamin/Mineral without Iron Maximum MultiVitamin
by Advanced Physician's Products
5.8
37 EcoNugenicsLongevity Rhythms Gold Longevity Rhythms Gold
by EcoNugenics
5.8
38 SolarayIron-Free Spectro Multi-Vita-Min Iron-Free Spectro Multi-Vita-Min
by Solaray
5.8
39 Nature's BlendVitaminix Ultimate Vitaminix Ultimate
by Nature's Blend
5.6
40 Pharmanex (Nu Skin)LifePak Prime LifePak Prime
by Pharmanex (Nu Skin)
5.4
41 MelaleucaVitality Pak Vitality Pak
by Melaleuca
5.3
42 HerbalifeFormula 2 Multivitamin Complex Formula 2 Multivitamin Complex
by Herbalife
5.3
43 QCI NutritionalsUltra Vitality #1 Ultra Vitality #1
by QCI Nutritionals
5.2
44 KALMultiple Energy Multiple Energy
by KAL
5.2
45 MegafoodEssentials for Life Essentials for Life
by Megafood
5.2
46 OptimoxAndrovite Androvite
by Optimox
5.1
47 Swanson UltraWhole Food Multi without Iron Whole Food Multi without Iron
by Swanson Ultra
5.0
48 JarrowMulti E-Z Powder Multi E-Z Powder
by Jarrow
5.0
49 Great EarthTNT - Total Nutrition Tablet TNT - Total Nutrition Tablet
by Great Earth
5.0
50 NikkenKenzen Mega Daily 4 Kenzen Mega Daily 4
by Nikken
4.9
51 Garry Null'sSupreme Health Formula Supreme Health Formula
by Garry Null's
4.8
52 Thorne ResearchAl's Formula Al's Formula
by Thorne Research
4.8
53 AtkinsBasic #3 Basic #3
by Atkins
4.7
54 Vitamin WorldDaily 3 With Antioxidant Factors Daily 3 With Antioxidant Factors
by Vitamin World
4.7
55 PhytoPharmicaClinical Nutrients Clinical Nutrients
by PhytoPharmica
4.7
56 PfizerCentrum Centrum
by Pfizer
4.6
57 4LifeBioVitamins Type III BioVitamins Type III
by 4Life
4.5
58 Bronson LaboratoriesPerformance Edge Performance Edge
by Bronson Laboratories
4.5
59 One A DayEssential Essential
by One A Day
4.5
60 Country LifeMaxine Maxine
by Country Life
4.4
61 Nature MadeMulti Complete Multi Complete
by Nature Made
4.3
62 QuestMaximum Once A Day Maximum Once A Day
by Quest
4.2
63 Nature's BountyGreen Source Vegetarian Formula Green Source Vegetarian Formula
by Nature's Bounty
4.1
64 MatolMatolife Matolife
by Matol
4.1
65 Greens+Multi+ Multi+
by Greens+
3.9
66 Michael's Naturopathic ProgramsPedia Vites Pedia Vites
by Michael's Naturopathic Programs
3.8
67 NatrolMy Favorite Multiple Original My Favorite Multiple Original
by Natrol
3.8
68 Nu-lifeUltimate One Ultimate One
by Nu-life
3.7
69 JamiesonSuper Vita-Vim Super Vita-Vim
by Jamieson
3.7
70 WalgreensUltra Choice Premium Ultra Choice Premium
by Walgreens
3.5
71 Swiss Natural SourcesSuper Adult Chewable Super Adult Chewable
by Swiss Natural Sources
3.4
72 Ripple CreekMega-100 (Slow Release) Mega-100 (Slow Release)
by Ripple Creek
3.3
73 ThompsonHuman Nature Green Multi Human Nature Green Multi
by Thompson
3.0
74 Safeway SelectSuper Multivitamin Super Multivitamin
by Safeway Select
2.9
75 Perfect ChoiceMultivitamin Specially Formulated Multivitamin Specially Formulated
by Perfect Choice
2.9
76 WatkinsSuperfood Multiple Superfood Multiple
by Watkins
2.8
77 Vitamin PowerPower Source 100 Power Source 100
by Vitamin Power
2.8
78 Pilgrim'sSilver Stars Multi Silver Stars Multi
by Pilgrim's
2.7
79 Absolute NutritionDieters' Multi's Dieters' Multi's
by Absolute Nutrition
2.7
80 Nature's SunshineSuper Supplemental Vitamins and Minerals Super Supplemental
by Nature's Sunshine
2.7
81 Freeda VitaminsUltra Freeda Iron-Free Ultra Freeda Iron-Free
by Freeda Vitamins
2.7
82 ZonePerfectMulti Vitamin & Mineral Multi Vitamin & Mineral
by ZonePerfect
2.6
83 SisuOnly One Only One
by Sisu
2.5
84 SchiffSingle Day Single Day
by Schiff
2.4
85 Nature's PlusUltra One Uitra One
by Nature's Plus
2.0
86 Kirkland Signature (Costco)Daily Multi Daily Multi
by Kirkland
1.9
87 SunkistMulti-Men's Multi-Men's
by Sunkist
1.7
88 LifestylesLifecycles Lifecycles
by Lifestyles
1.6
89 Western FamilyMultra Forte Multra Forte
by Western Family
1.3
90 AvonVitAdvance Complete Multivitamin VitAdvance Complete Multivitamin
by Avon
1.2
91 FloraMultiCaps MultiCaps
by Flora
1.2
92 RelivClassic Classic
by Reliv
1.1
93 SundownComplete Daily Complete Daily
by Sundown
0.9
94 YourLifeSuper Multi with Herbs Super Multi with Herbs
by YourLife
0.9
95 Rite AidWhole Source Whole Source
by Rite Aid
0.8
96 21st CenturyOne Daily Maximum One Daily Maximum
by 21st Century
0.7
97 Spring ValleyUltra Multivitamin Ultra Multivitamin
by Spring Valley
0.6
98 Life BrandOptimum Optimum
by Life Brand
0.6
99 Good Neighbor PharmacyBalanced Care Complete Multi Balanced Care Complete Multi
by Good Neighbor Pharmacy
0.6
100 KrogerAdvanced Formula Complete Advanced Formula Complete
by Kroger
0.6
101 EquateOne Daily One Daily
by Equat
0.6
102 Action LabsEssential Nutrients Essential Nutrients
by Action Labs
0.5
103 GeritolComplete Complete
by Geritol
0.4

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