1 Product identity

Ingredient risk

2 ingredients to use with caution

SuperFlex-L

Name: SuperFlex-L
Brand: NewtonEverett

BrandNewtonEverett→Other Combinations Liquid 23 ingredients 2 caution DSLD #34711

Net contents: 32 fl. Oz.

Target: Adults and Children 4 years and above

DSLD entry: 2014-06-25

2 Ingredients (23)

IngredientGroupSafety

Vitamin B3NiacinConditionally Safe

Vitamin B6Vitamin B6Use with Caution

Folic AcidFolateConditionally Safe

Vitamin B12Vitamin B12Use with Caution

SeleniumSeleniumConditionally Safe

ManganeseManganeseConditionally Safe

Regenasure GlucosamineGlucosamine Hydrochloride—

MSMMethylsulfonylmethaneGenerally Safe

BoronBoronConditionally Safe

Proprietary BlendProprietary Blend (Herb/Botanical)—

GingerGinger —

HorsetailHorsetail—

GrapeGrape —

Cat's ClawCat's ClawLimited Evidence

SarsaparillaHonduran Sarsaparilla—

purified WaterWater—

Vegetable GlycerinGlycerol—

Aloe veraAloe—

Natural FlavorsFlavor—

Xanthan GumXanthan Gum—

SteviaStevia—

Potassium BenzoatePotassium benzoate—

Potassium SorbatePotassium sorbate—

Ingredient amounts require the full DSLD label. View full label at NIH DSLD →

⚠️ Use with caution — restricted in some markets

Vitamin B6 — Sensory neuropathy from chronic high-dose B6 (>200 mg/day) — presents as numbness, ataxia. Can be irreversible. Often self-prescribed by patients…

Vitamin B12 — Nitrous oxide anesthesia in subclinically B12-deficient patients can precipitate acute combined degeneration — always check B12 before elective p…

3 Safety cross-reference

Niacin — Conditionally Safe

⚠ Flushing at >50 mg

⚠ Hepatotoxicity at high doses

Vitamin B6 — Use with Caution

Folate — Conditionally Safe

⚠ May mask B12 deficiency

⚠ Colorectal cancer risk debated

Vitamin B12 — Use with Caution

Selenium — Conditionally Safe

⚠ Selenosis >400 mcg

⚠ Diabetes risk at high doses

Manganese — Conditionally Safe

⚠ Neurotoxicity with chronic excess

Glucosamine — Limited Evidence

⚠ Shellfish allergy

⚠ May affect glucose

Methylsulfonylmethane — Generally Safe

⚠ GI effects

⚠ Headache

Boron — Conditionally Safe

⚠ Reproductive toxicity in animals

Cat's Claw — Limited Evidence

⚠ May worsen insulin resistance

⚠ Liver fat accumulation

Potassium — Limited Evidence

⚠ Hyperkalemia risk

⚠ Dangerous with ACE inhibitors

4 Label claims

• All Other

• Structure/Function

5 Data source

DSLD ID34711

Full labelView at NIH DSLD →

SourceOffice of Dietary Supplements, NIH

Market statusOn market

Entry date2014-06-25

6 More from NewtonEverett

View NewtonEverett Safety Scorecard → 43 products

Acai Berry Metabolism Boost Acai Berry Slim Down African Mango Lean BCAA Plus Branched Chain Amino Acid Grape Borage Oil 1,000 mg Calcium with Vitamin D3

7 Cite this page

Vancouver

Pkhakadze G. SuperFlex-L — product analysis [Internet]. Tbilisi: Public Health Institute of Georgia; 2026 [cited 2026 Aug 26]. Available from: https://supplement.ge/products/superflex-l-34711/

CC BY 4.0. Product data from NIH DSLD; safety analysis by SupplementIndex.

Analyzed by SupplementIndex

PHIG · Editor-in-Chief: Prof. Giorgi Pkhakadze, MD, MPH, PhD

Product data sourced from the NIH Dietary Supplement Label Database (DSLD). Safety cross-referencing by SupplementIndex. This analysis is for informational purposes only. For corrections: info@accreditation.ge.
Publisher: PHIG