on June 25, 2026
You wake up in the morning, drink coffee, and head out into the city. For half an hour, you're exposed to exhaust fumes, noise, and stress. In the evening, you scroll through your phone late into the night. Sound familiar? The problem is that each of these moments generates something in your body that is rarely spoken about directly: free radicals. And it is precisely these, accumulating over the years, that are one of the main mechanisms of cell aging, chronic fatigue, and weakened immunity.
This is not scaremongering. This is biochemistry.
What is oxidative stress and why does it destroy your body from within?
Free radicals are molecules with an unpaired electron—reactive, unstable, and aggressive. They are produced as a result of normal metabolism, but their production drastically increases with exposure to air pollution, processed foods, chronic stress, intense physical exertion, or smoking. The problem is not that they exist at all—in small quantities, free radicals perform useful signaling functions. The problem arises when their quantity exceeds the body's defensive capabilities.
The state in which free radicals overwhelm natural antioxidant mechanisms is called oxidative stress. Studies published in Oxidative Medicine and Cellular Longevity indicate that long-term oxidative stress is linked to the development of cardiovascular diseases, type 2 diabetes, neurodegenerative diseases, and accelerated tissue aging. It's a silent, slow, but real problem—and it affects most of us living in urban and corporate environments.
The body's natural defense relies on enzymes (superoxide dismutase, catalase, glutathione) and externally supplied antioxidants. But the modern diet, poor in vegetables and rich in sugars and trans fats, does not provide enough of them. Hence the growing interest in antioxidant supplementation. The only question is which ones actually work.
The problem with most antioxidant supplements
Vitamin C tablets, vitamin E capsules, single plant extracts—the market is flooded with them. But one of the key limitations of classic oral supplements is bioavailability. Many active ingredients are broken down in the digestive tract before reaching the bloodstream in sufficient concentration.
Another limitation is synergy. Antioxidants do not work in isolation. Studies published in Nutrients indicate that polyphenols from various plant sources exhibit a synergistic effect—they mutually enhance each other's action and regenerate spent antioxidant molecules (e.g., vitamin C regenerates vitamin E after reaction with a free radical). A supplement composed of a single ingredient, by definition, does not provide this synergy.
And finally, the gut. More and more research in psychoneuroimmunology and microbiology confirms that the condition of the gut microbiota directly influences how effectively the body copes with inflammatory responses and oxidative stress. The microbiome produces its own protective compounds and modulates the activity of the immune system. A supplement that ignores the gut ignores half of the puzzle.
This is precisely why an approach combining antioxidant activity with fermentation and microbiota support is beginning to be treated by scientists as much more complete.
Postbiotics are a new generation of body support
Probiotics are live bacteria. Prebiotics are the fiber these bacteria feed on. And postbiotics? These are bioactive compounds produced by bacteria during fermentation—short-chain fatty acids, enzymes, peptides, polyphenols converted into more bioavailable forms, and inactive bacterial cells or their fragments.
Postbiotics have one key advantage over probiotics: they are stable. They do not need to survive the journey through the stomach as living organisms to exhibit biological activity. A meta-analysis published in Frontiers in Immunology (2021) indicates that postbiotics can modulate the immune response, reduce intestinal barrier permeability, and exhibit anti-inflammatory properties regardless of whether they contain live bacterial cultures.
Fermentation also changes the plant itself. Polyphenols contained in green tea, turmeric, or pomegranates can be converted by bacteria into compounds with higher biological activity and better absorption. These are not ready-made, unchanged ingredients—these are ingredients after undergoing biotransformation.
AntyOxy PostBiotiQ: what's in the bottle
AntyOxy PostBiotiQ from Pretty Care addresses these limitations simultaneously. The formula combines a postbiotic bioferment from 8 natural plant superfoods with 500 mg of vitamin C and broccoli sprout extract. The entire product underwent in vitro biological activity tests on cancer cells.
The product is unpasteurized, unfiltered, and in liquid form. Pasteurization extends shelf life but destroys some thermolabile active compounds. The liquid form shows higher bioavailability than tablets or capsules; ingredients are absorbed faster and more fully because they do not have to break through gelatin coatings or pressed matrices.
Bioferment from 19 bacterial strains
The heart of the product is 23,997 mg of postbiotic bioferment created from the fermentation of six plant ingredients by 19 strains of lactic acid bacteria and bifidobacteria. Among them: Lacticaseibacillus rhamnosus GG—one of the most thoroughly researched probiotic strains in the world, with several hundred published clinical studies, as well as strains like Lactobacillus plantarum, Bifidobacterium longum, and Streptococcus thermophilus. After fermentation, the bacteria are inactivated, making them postbiotics in the strict sense of the word.
Each of these strains brought its unique enzymatic activity to the fermentation process. The end result is a matrix of metabolites that you won't find in any single plant extract.
Green tea — EGCG
Camellia sinensis leaves provide one of the most studied antioxidant compounds—epigallocatechin gallate (EGCG). Studies conducted by Pan et al. (2016) and published in the Journal of Food Science and Technology confirm that EGCG exhibits a strong ability to neutralize free radicals, with its bioavailability increasing after fermentation. Green tea in bioferment is therefore not only a source of antioxidants but also a substrate that bacteria transform into more biologically active metabolites.
Turmeric and curcumin bioavailability
Turmeric (Curcuma longa) has attracted scientists' attention for decades, mainly due to curcumin, a polyphenol with documented anti-inflammatory and antioxidant properties. The problem with pure curcumin is well-known: its bioavailability after ingestion is very low because it dissolves poorly in water and is rapidly metabolized. However, studies published in BioMed Research International indicate that lactic fermentation can significantly improve curcumin's bioavailability profile through biotransformation and changes in chemical form. In AntyOxy PostBiotiQ, turmeric undergoes fermentation with 19 bacterial strains—this is a key difference compared to supplements based on dry root extract.
Pomegranate — ellagitannins and urolithins
Pomegranate fruit (Punica granatum) is one of the richest sources of polyphenols among all fruits. Its characteristic active ingredients, ellagitannins, are metabolized by the gut microbiota into urolithins, compounds with strong antioxidant and anti-inflammatory properties. The ability to produce urolithins depends on the composition of an individual's microbiome; a study published in Nature Medicine (2019) showed that a significant portion of the Western European population has an inefficient microbiome for this conversion. The fermentation of pomegranate with selected bacterial strains during the production of AntyOxy PostBiotiQ essentially performs this step for the body.
Broccoli sprouts and sulforaphane
Broccoli sprout extract (Brassica oleracea) is a source of glucoraphanin, a precursor to sulforaphane. Sulforaphane is an isothiocyanate that activates the Nrf2 pathway, the so-called master switch of cellular defense. Nrf2 activation triggers the endogenous production of antioxidant enzymes (glutathione, SOD), meaning sulforaphane does not act like a regular antioxidant—it teaches the cell to defend itself. Studies published in Cancer Prevention Research (Fahey et al.) indicate that broccoli sprouts contain 10 to 100 times more glucoraphanin than mature broccoli, hence the use of extract rather than the whole vegetable.
Tomato, shiitake, grapes
Tomato provides lycopene, a carotenoid antioxidant, whose connection with cardiovascular protection and prostate health is confirmed by a systematic review published in Nutrients (2021). Shiitake (Lentinula edodes) is a mushroom containing beta-glucans, lentinan, and polysaccharides with documented immunomodulatory effects—a meta-analysis in the Journal of Nutrition points to their ability to activate NK cells (natural killer) and macrophages. Grapes provide resveratrol and proanthocyanidins, compounds extensively studied for their cardio-anastomotic protection and neuroprotective properties.
500 mg of vitamin C – not just for decoration
Vitamin C (L-ascorbic acid) at a dose of 500 mg is an amount significantly exceeding the daily requirement. It acts on several levels simultaneously: it directly neutralizes free radicals, regenerates oxidized vitamin E, supports collagen synthesis, and increases the absorption of polyphenols from the digestive tract. According to data from the European Food Safety Authority (EFSA), vitamin C in this dose has a documented effect on protecting cells from oxidative stress and the proper functioning of the immune system.
For whom
Living in the city and working under chronic stress, the body is permanently exposed to elevated free radical production and rarely gets a sufficient counter from its diet. AntyOxy PostBiotiQ is a particularly justified choice for people after antibiotic therapy or intensive treatment, for those who engage in demanding sports, and for anyone concerned with the preventive support of cellular health.
It's also a good choice for people who understand that health is not the sum of isolated supplements, but coordinated support for several systems simultaneously—the gut, immunity, and antioxidant mechanisms.
How it works in practice
25 ml daily – 5 teaspoons, diluted in approx. 50 ml of water, after a meal. One package (500 ml) lasts for 20 servings, which costs about 7 PLN per day. The product does not contain alcohol, gluten, or milk. It is safe for people with food sensitivities without compromising the composition, as the formula has not been purified at the expense of active compounds.
Storage after opening requires refrigeration, which is consistent with the product's nature: the unpasteurized formula is delicate and deserves proper treatment.
About the research
The AntyOxy PostBiotiQ formula was evaluated on cancer cells in vitro for its antioxidant activity. This is a point that distinguishes the product from most supplements on the market, where efficacy claims are based solely on the properties of individual ingredients, not on testing the finished formula. In vitro studies are not randomized clinical trials, but they are a standard and reliable first step in assessing the biological activity of complex preparations.
Finally
The supplement market is overloaded with products that look impressive on the label but make no real difference. AntyOxy PostBiotiQ is a liquid postbiotic formula fermented with 19 bacterial strains, with sulforaphane from broccoli sprouts activating the Nrf2 pathway, a synergy of 8 superfoods, and 500 mg of vitamin C, laboratory-tested, without alcohol, gluten, and milk. This is not a supplement for a temporary trend. It is a formula designed with how oxidative stress truly works in mind.
The product is available at pretty-care.com. Pre-orders are currently ongoing with planned delivery at the end of June.
This article is for educational purposes. Dietary supplements do not replace a varied diet and a healthy lifestyle. In case of illness or medication use, consult a doctor before starting supplementation.
