A daily multivitamin covering 26 vitamins and minerals, mostly at RDA levels. The bright spot is **Vitamin D3** at 1,000 IU — right at the minimum clinical dose for maintaining adequate blood levels, and in the preferred cholecalciferol form. Beyond that, most nutrients sit at basic daily value amounts, which means you're covered for preventing outright deficiency but not reaching the higher ranges used in clinical research for specific health goals.
Nearly every mineral uses a budget form: **Magnesium** as oxide (roughly 4% absorption), **Zinc** as oxide, **Selenium** as sodium selenate, and **Copper** as sulfate. The B vitamins follow the same pattern — **B12** as cyanocobalamin, **Folate** as synthetic folic acid, and **Vitamin E** in the synthetic dl-alpha form, which your body uses about half as efficiently as the natural version. You do get several built-in synergies (Vitamin C with iron, D3 with calcium, B12 with folate), but the doses are modest enough that the practical benefit is limited.
The biggest gap is **Magnesium** at just 50 mg — about 25% of the RDA — in the least absorbable form available. If you're looking for meaningful magnesium support, you'd need a separate supplement alongside this one.
BioStacksAsk AI about this product
21st Century
Sentry, Adults Multivitamin & Multimineral Supplement, 300 Tablets
1 Tablet · 300 servings
What it does
A multivitamin and mineral formula.
Vitamin A
Mixed formsGrade —
Supports normal vision, immune function and the maintenance of healthy tissues.
Calcium
Mixed formsGrade —
Supports the maintenance of normal bones and teeth, muscle function and nerve signaling.
Ingredients (26)
Other ingredients
FD&C Yellow No. 6Colorant
May trigger sensitivity in some individuals; behavioral concerns in susceptible children
TalcAnti-caking
IARC classifies cosmetic-grade talc not containing asbestos as Group 2B (possibly carcinogenic to humans); perineal talc use as Group 2A (probably carcinogenic). Johnson & Johnson voluntarily withdrew talc-based baby powder from US/Canada in 2020 and globally in 2022 after extensive litigation tied to ovarian-cancer and mesothelioma cases. The 2018 FDA contamination survey found asbestos in 9 of 52 cosmetic talc products tested. As a supplement excipient talc is a pure manufacturing convenience — no nutritional or functional benefit to the user — so the asbestos-exposure risk has no offsetting upside. Safer alternatives (silicon dioxide, microcrystalline cellulose, rice hulls) are widely available.
Titanium DioxideColorant
Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.
MaltodextrinBinder
Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.
MonoglyceridesEmulsifier
Glycerol monoesters of fatty acids used as emulsifiers and processing lubricants
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
MonoglyceridesEmulsifier
Glycerol monoesters of fatty acids used as emulsifiers and processing lubricants
PEG/PVA CopolymerCoating
Graft copolymer of polyvinyl alcohol and polyethylene glycol used as an immediate-release film-coating polymer
Lab testing
How to take it
With a meal containing fat
Keep it away from coffee, tea and dairy
Space it a couple of hours from Green Tea Leaf Extract
On the label
Directions: As a dietary supplement, adults take one (1) tablet daily with any meal or as directed by your healthcare provider. Do not exceed recommended dosage. Individual results may vary.
Price check
$16.99
Cheaper than 77% of 798 multivitamins
Similar products
Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.
Not medical advice. Consult your healthcare professional.