Irwin Naturals Men's Living Green Liquid-Gel Multi Review
Irwin Naturals Men's Living Green Liquid-Gel Multi is a once-daily-style (labeled dose: three liquid soft-gels per day, in divided doses with food) multivitamin designed for adult men. Per the Swanson and iHerb listings, it combines more than 70 vitamins, minerals, oils, antioxidants, amino acids, essential fatty acids and other nutrients drawn from 12 key nutrient groups. Retailer copy says it uses botanicals from whole living plants and whole food concentrates. It has two men-specific ingredients: saw palmetto and pumpkin seed, which are marketed for prostate health. Walmart's listing adds ginseng and maca (herbal adaptogens marketed for stamina), CoQ10, omega-3 fatty acids and antioxidants. The retailer claims for these are heart, immune and energy support. How it works: 1. Delivery format. The nutrients are suspended in oils inside a gelatin soft-gel shell. The shell is made of gelatin, purified water, glycerin and beeswax. It contains soy lecithin and titanium dioxide, and sodium copper chlorophyllin gives it the green color. The manufacturer says the liquid soft-gels release nutrients quickly and contain no binders or fillers or added preservatives. Fat-soluble vitamins (A, D, E, K), CoQ10 and omega-3s dissolve in oil and are absorbed with dietary fat, which is why the label says to take it with food. The shell dissolves in the stomach and releases the oil-based fill for uptake in the small intestine. Retailers say this absorbs better than tablets. That is a plausible mechanism but a marketing claim, and I did not find independent clinical proof. 2. Micronutrient coverage. The B vitamins act as coenzymes in energy metabolism. Vitamin C, vitamin E and the other antioxidants neutralize free radicals. Minerals such as zinc and selenium support immune and reproductive function. Vitamin D supports bone and immune function. 3. Botanical and men-specific components. Saw palmetto is traditionally used for urinary and prostate comfort. It is thought to act partly by modulating 5-alpha-reductase activity, although clinical results are mixed. Pumpkin seed oil is a traditional prostate and urinary support ingredient. Ginseng and maca are adaptogens used for resilience to fatigue. 4. Essential fatty acids and CoQ10. Omega-3 EPA/DHA from fish supports cardiovascular and cell-membrane function. CoQ10 takes part in mitochondrial energy production. Allergens and cautions: the product contains soy and fish (anchovy, sardine). Check the label for exact amounts, because formulations have changed (iHerb notes a "new formulation"). It is a dietary supplement and is not intended to diagnose, treat or cure disease. Men on meds, or men with prostate conditions, should consult a clinician first.
We don’t sell supplements. We help you make decisions and get the best price.
Lowest prices
Finding the lowest prices at the stores now. This takes a few seconds.
Study, Trial or Testing Result Summary
Members OnlyHuman studies
We could not find any human study findings on energy for the ingredients in this product, and the label and ingredient amounts per serving are unknown. Because no studies were given, we cannot say whether any ingredient is present at a dose that research has tested, or whether ingredients are hidden in a blend. What we know comes from customers. About 1,100 reviews were counted, and 87 percent were positive. In the review excerpts we could read, many people describe themselves as long-term users and mention steadier energy and alertness, waking in a good mood, and no stomach upset. Some find the three soft-gels a day large or inconvenient. One customer received black rather than green capsules and felt sick afterward, which points to a possible batch or storage problem. A newer formula is now listed, so older reviews may not match the current product. Until the label is confirmed and study findings are available, treat the energy benefit as reported by users rather than shown by research. Animal and cell studies are never counted.
Review Totals and Summary
Members Only1,100 reviews · 87% positive
Customers are mostly positive and often describe themselves as long-term users. Some say they have taken it for 15 or 20 years. Reviewers on iHerb, Irwin Naturals' own site and other retailers like how complete the formula is. They describe it as a full multivitamin with omega-3s and herbs in one product, and some rank it above heavy-duty rivals such as Animal Pak. Many value the ingredient quality and the "not too much" dosing. One reviewer said they didn't just pee it out, a nod to moderate doses of water-soluble vitamins. The most common benefit people report is steadier energy and alertness. Some say they wake up in a good mood, and some say they have no morning grogginess. Reviewers also mention easy absorption and no stomach upset. Several say the natural-ingredient approach works well for them. They call it a daily staple that "does the trick" and say it is good value for the price. The format gets mixed comments. Fans like the liquid-gel because they believe it supports quality and absorption. Some find the cute green capsules inviting and soft enough to swallow. Others say the soft-gels look large and are big for some people, and several reviewers mention size even while rating the product well. The dosage of three per day is a minor inconvenience for some. Complaints are few and scattered. The clearest was a customer on the manufacturer's site who got a shipment where the capsules came in black rather than green. That customer said they felt sick afterward, which suggests a possible storage or batch-quality problem. Other reviews on that page seem to belong to a different product (a melatonin product), so I did not count them. Other possible downsides, such as fishy aftertaste, are not clearly documented in the reviews I could read, and I would not claim them. Reviews also sometimes refer to older versions, and a new formulation is now listed, so experiences may differ. Overall, reviewers like the all-in-one formula, the energy and the long-term reliability. Their main reservations are capsule size and occasional quality-control worries. The sample I read was limited to retailer review excerpts, so it may not represent all customers.
Biohacker Summary
Members Only9 of 10 recommend it
This product is a multi, and every ingredient the panel discussed is a smaller ingredient in this product, so the clearest signal comes from vitamin D, which nine of the ten panelists mentioned. Most of them recommend or use it, for immune support, brain and mood, muscle, fertility, bone healing and general health or longevity. Three panelists take 5000 IU of vitamin D3 in the morning, one suggests at least 10,000 IU daily in winter, and another says to take it with dietary fat for better absorption. Several advise testing blood levels first, and one says there is little point in supplementing unless you are deficient. Vitamin C, also a smaller ingredient in this product, drew recommendations from several panelists, often paired with collagen for joints and skin, while amino acids and vitamins A and E got only brief mentions, and no one said they stopped taking anything.
See all 10 biohackers →Hide the biohackers
Dr. Eric Berg · Vitamin D · warns
- Dr. Berg warns that the recommended daily intake for vitamin D is based on a massive error and that the actual necessary amount is closer to 8,895 IU, with millions remaining deficient.
- Recommends getting vitamin D levels tested to ensure they are between 50 and 70, as vitamin D is intimately involved in regulating prostate size.
- Recommends taking at least 10,000 IUs of vitamin D3 every single day in the winter, stating it is the most important vitamin to lower cancer risk.
- Recommends vitamin D to support the immune system, aiming for blood levels between 80 to 100 ng per ml.
- Mentions that lemon is loaded with vitamin C, and when combined with coffee, vitamin C significantly increases the bioavailability of antioxidants in the coffee.
- Recommends taking no less than 10,000 IU's of vitamin D3 for osteoporosis, alongside magnesium and K2.
- Recommends increasing vitamin D to restore balance and support healthy blood pressure.
- Dr. Berg states that Vitamin C helps fight biofilms and is essential for making collagen in gums, teeth, and capillaries.
- States that a lack of vitamin D can potentially cause achy bones or crashing mood.
- Recommends Vitamin C as a cofactor, especially for collagen.
- Notes that low vitamin A can lead to dry eyes, dry mouth, and night vision issues.
- States that vitamin D is intimately involved in the immune system and recommends taking at least 10,000 IUs each day.
- States that high doses of vitamin C, like 2 to 4 grams, can greatly reduce inflammation and support the immune system.
- States that taking high doses of vitamin D3 for 14 days can improve mood, sleep, low back pain, skin issues, and blood pressure, as well as act as a natural anti-inflammatory and reduce susceptibility to sickness.
Dave Asprey · Vitamin D · uses
- Takes Vitamin DAKE from Suppgrade Labs.
- Suggests that vitamin D supports brain health, muscle function, and focus.
- Recommends taking vitamin C for better skin health.
- Host Dave Asprey explains why correcting a vitamin D deficiency still makes sense for male fertility, even though supplementation did not improve overall semen parameters in a randomized trial.
- States that currently, he is only taking vitamin C and vitamin D.
- States that currently, he is only taking vitamin C and vitamin D.
- Dave Asprey's kids get a little bit of vitamin E every day, which helps to stabilize the bad oils they get when eating at restaurants.
- Recommends vitamin D, noting it's actually a hormone and that most people are deficient, even those who take it, because they don't take enough.
- States that most people on the spectrum are low in vitamin D and need more of it, mentioning his own product, Vitam DAKNE, which contains real vitamin A.
- Recommends real vitamin A for people on the spectrum, noting that many cannot convert plant vitamin A and need the good stuff he includes in his Vitam DAKNE product.
- Dave Asprey recommends Vitamin D3 with K2, explaining D3 is a hormone made from sunlight and K2 directs calcium into bones, not arteries, highlighting its low cost, widespread deficiency, and the ability to test its effectiveness.
- Recommends Vitamin D as one of the most important supplements for overall health.
- Recommends Vitamin E as one of the most important supplements for overall health.
- Dave Asprey reflects on how new research clarifies the mechanism behind IV vitamin C's anti-cancer effect, vindicating a decades-old idea that was dismissed for the wrong reasons.
Siim Land · Vitamin D · recommends
- Advises against taking vitamin D in the morning with other supplements because it is fat soluble and requires dietary fat for better absorption.
- Recommends taking Vitamin D with fat for better absorption.
- Recommends taking vitamin C with collagen to support joint collagen synthesis.
- States that Vitamin D connects biology to light and that UVB reaching the skin enables its production.
- States that vitamin C is needed for initiating collagen synthesis and that higher vitamin C intake appears to increase vitamin C content in the skin.
- Lists sauerkraut and fruit as sources of Vitamin C.
- Lists liver and carrots as sources of Vitamin A.
- Thinks vitamin D has some of the strongest evidence and is worth considering.
- Notes that Vitamin K2 pairs well with vitamin D by regulating calcium and bone mineralization.
- Notes that Vitamin C is one of several supplements with human evidence.
- Recommends taking vitamin D supplements with some fat to maximize its absorption, suggesting with food or a teaspoon of olive oil.
- Notes that taking vitamin D3 with a fat-containing meal resulted in 32% higher peak blood vitamin D levels.
- Recommends taking Vitamin D in the morning or at lunch with fat.
- Notes that Boron improves vitamin D.
Ben Greenfield · Amino Acids · uses
- For longer operations, Ben Greenfield runs intraoperative IV bags of amino acids to mitigate muscle protein breakdown during surgery.
- Mentions a recent study showing no significant increase in bleeding for patients on Vitamin E supplementation during open heart surgery, which was interesting for him to learn.
- States that vitamin C is extremely important for collagen turnover and cites orthopedic data showing that 500 mg to 1 g of vitamin C can reduce the rate of complex regional pain in total knee replacements and wrist fractures.
- Notes that Vitamin D is actually a hormone and recommends patients aim for levels around 40 to 50, or even 60 for fracture healing, for optimal healing, as opposed to just above 20 which is considered normal.
- Gives a nod to amino acids, suggesting they would fit into the same category as collagen peptides for improving skin elasticity, even though studies have focused on collagen peptides.
- Notes that Vitamin A is a fat-soluble vitamin that supports healthy skin cell turnover.
- Mentions vitamin C as part of a bare-minimum protocol.
- Mentions vitamin D as part of a bare-minimum protocol.
- Advises getting vitamin D levels between 60 and 100 nanograms per milliliter as a minimum step for overall health and to slow down heart disease.
- Notes that while vitamin C has significant value, the optimal dose is a vexed question, and high doses might not always be beneficial, potentially blunting the hormetic effects of exercise.
- Notes that IV vitamin C has been used for decades for cancer patients with almost no standardization and that he receives many questions about its effectiveness and combination with chemo.
- Has been taking Vitamin D3 K2 for over a decade.
- Notes that sunlight influences more than just vitamin D production.
- Recommends keeping vitamin D levels high, suggesting that a supplement is probably not a bad idea, especially given that many people are deficient due to spending most of their time indoors.
Dr. Mark Hyman · Vitamin D · recommends
- Recommends Vitamin D for health, stating that amazing things happen when patients' vitamin D statuses reach optimal levels.
- Mentions vitamin D as an existing biomarker that plays a role in mental health, which Function Health includes in their measurements.
- Notes that vitamin D plays a role in immune function.
- Mentions that vitamin A levels can be looked at to get a deep sense of what's happening with nutrient levels.
- Recommends vitamin C as a basic supplement during detoxification to help with inflammation and detoxification.
- Recommends checking vitamin D levels and states that if they had to pick one single intervention for immune health, vitamin D would be it.
- Dr. Hyman discusses vitamin D in relation to sun exposure patterns.
- States that vitamin D supplementation can help with oxidative stress.
- Dr. Hyman mentions vitamin C as an advanced therapy for skin repair.
- Mentions topical vitamin C as an antioxidant that can help skin with aging.
- Mentions that what they do when a cold comes on is not just vitamin C.
- Mentions vitamin D as a key nutrient for supporting immune function.
- States that vitamin D is probably the single most important intervention for immune health, recommending levels of 45 to 70 and emphasizing testing to determine the right dose.
- Recommends taking 50,000 units of vitamin A for three to five days right at the onset of symptoms if one feels they might be getting sick.
Thomas DeLauer · Vitamin C · recommends
- Recommends taking vitamin C along with collagen about an hour before a workout for connective tissue benefits.
- Uses vitamin C as part of their immunity duo, stating it is important for boosting the immune system, especially during cold and flu season.
- Uses vitamin D3 in the fall and winter months when getting less sun, as it's important to supplement it then.
- Recommends taking a massive amount of vitamin D simultaneously with an early morning massive breakfast to help reset circadian rhythms and address hyperphagia.
- Recommends Vitamin D, stating that it has receptors throughout the brain and deficiency can quickly impact brain and mood.
- Takes supplemental vitamin D because he is skin sensitive and from northern latitudes, limiting his UV exposure.
- Recommends taking vitamin D on non-liver days to ensure both nutrients get proper receptor access.
- Recommends consuming vitamin C to aid in NADPH recycling, which is necessary for glutathione to be reused after neutralizing oxidative stress.
- Takes Purity's liquid liposomal vitamin C for immune support and overall wellness, finding it easy to add to water, juice, or take straight up due to its good taste.
- Takes Purity's liquid vitamin D3 with K2 because she is constantly inside during the day; D3 is for overall wellness and K2 helps the body absorb calcium properly.
- States that amino acids, including essential amino acids and BCAAs, cannot be consumed during a fast as they can shut down ketosis due to the leucine insulin response.
- Compares the Vitamin C content of oranges (53mg) to guava (228mg), noting guava has 4x more.
- Recommends getting vitamin D, suggesting it can be obtained while walking.
- States that vitamin D is best obtained from the sun, but getting it from food definitely helps, and notes its role as a hormone influencing many cells.
Bryan Johnson · Vitamin D · uses
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Mentions that the sunlight assessment claims low vitamin D levels cause the immune system to misfire, and notes that their vitamin D has been measured.
- Takes 5000 IU of Vitamin D3 in the morning for longevity.
- He takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- Takes 5,000 IU of Vitamin D3 in the morning for longevity.
- Takes 5,000 IU of Vitamin D3 in the morning.
- Takes 5,000 IU of Vitamin D3 in the morning.
- He takes 5000 IU of Vitamin D3 in the morning for general health.
- Emphasizes the importance of getting a complete amino acid profile every day for every fundamental element of the body, as nine essential amino acids can only be obtained through food.
- Uses Vitamin C as an example of how it would be great if people knew that when they took it, it had a measurable amount and wasn't polluted, which is what Brian ensures with his products.
- Applies vitamin C after showering.
- Takes 250 milligrams of Vitamin C.
Dr. Rhonda Patrick · Vitamin D · neutral
- Vitamin D supplementation was linked to a 40% lower risk of dementia in an observational study of more than 12,000 older adults.
- Mentions that vitamin D also plays a role in maintaining muscle mass.
- Recommends ensuring adequate vitamin D intake for men's sperm health.
- Vitamin D and strength training alone did not, but adding them strengthened the effect on one clock, with the full combination slowing that measure by ~3.8 months.
- Lutein and zeaxanthin can also be obtained from certain multivitamins.
- Lutein and zeaxanthin can also be obtained from certain multivitamins.
- Lutein and zeaxanthin can also be obtained from certain multivitamins.
- Lutein and zeaxanthin can also be obtained from certain multivitamins.
- Recommends Vitamin D, noting it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity, and correcting deficiency may slow epigenetic aging.
- Uses Vitamin D3 as an example of a supplement that an AI model could track to see its impact on other metrics like glucose levels.
- Recommends Vitamin D, explaining that it regulates over 5% of the genome, including genes involved in immune defense, neurotransmitter synthesis, and longevity.
- Combining omega-3s with vitamin D and exercise has an additive effect, translating to ~3 months of slowed biological aging.
- The effect got stronger when omega-3 was combined with vitamin D and resistance training, with the full stack delaying phenotypic aging by about 3.8 months.
- Recommends nutrients like vitamin C for men to prioritize sperm mitochondrial health.
Andrew Huberman · Vitamin D · neutral
- Notes that most people are probably deficient in vitamin D and benefit from supplementing, but there's no point in doing it unless you're deficient for most things.
- Takes 5,000 IU of Vitamin D3 in the morning for longevity.
- Takes 5000 IU of Vitamin D3 in the morning for general health.
- States that Vitamin D is one of the critical nutrients with the best evidence for cognitive function and reducing the risk of dementia.
- Takes 5000 IU of Vitamin D3 in the morning.
- He takes 5,000 IU of Vitamin D3 in the morning for overall health.
- Takes 5000 IU of Vitamin D3 in the morning.
- Takes 5,000 IU of Vitamin D3 in the morning for general health.
- Takes 5000 IU of Vitamin D3 every day for longevity.
- Takes a multivitamin every day for longevity.
- Takes a multivitamin every day for longevity.
- Takes a multivitamin every day for longevity.
- Takes 5,000 IU of Vitamin D3 in the morning.
- Recommends AG1, a vitamin, mineral, and probiotic drink, and notes that for a limited time, a subscription comes with additional supplements.
Peter Attia · Vitamin D · uses
- Lists vitamin D as one of her staple supplements.
- Uses amino acids, noting they are absorbed faster than whey protein and are a good alternative when she doesn't want a milky substance.
- Notes that several studies show patients taking vitamin D can reduce TPO levels and prolong the honeymoon period of Hashimoto's disease.
- States that in mouse studies, there was a combined effect of alpha ketoglutarate with vitamin D for both sexes.
- Notes that in mouse studies, there was a combined effect of alpha ketoglutarate with vitamin A for male mice.
- Uses vitamin D as an example of how people might dismiss its efficacy due to failed clinical trials that didn't adjust the dose or measure levels.
- In mouse studies, Peter Attia's team found a combined effect of AKG with Vitamin D for both sexes.
- In mouse studies, Peter Attia's team found a combined effect of AKG with Vitamin A for male mice.
- Suggests that supplementing with lots of vitamin D might help overcome the negative effects of phenytoin on bone health by improving calcium absorption, though he is unaware of studies on this.
- Recommends Vitamin D3 as one of the 'big three' micronutrients for bone health, suggesting a daily intake of 800 to 1,000 IU, which can be obtained through sunlight or supplementation.
- Suggests that supplementing with lots of vitamin D might overcome the negative effects of phenytoin on bone health by counteracting increased catabolism of vitamin D and subsequent decreased calcium absorption.
- Recommends vitamin C as an important molecule for skin, noting its role as a precursor for collagen synthesis, a powerful antioxidant, and a regulator of complexion for even skin tone.
- Tried a vitamin C serum mixed with ferulic acid but stopped using it because she hated the smell. She notes that topical application of vitamin C far exceeds the levels achievable by ingestion for skin benefits.
- Recommends vitamin D for people who tend to be vitamin D deficient, such as those living in Portland, Oregon.
RAL Summary
Members OnlyTier 4 for Energy
Tier 3 requires some study support, but no human studies on energy were given for this product's ingredients, so the evidence is thin and supports only tier 4. So it is graded Tier 4, lower than the rules alone gave.
- Emerging: not enough evidence to rank higher yet.
- No human studies on this goal for its ingredients.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Metabolism, Nervous system
Combine with: For kidney support, pair a basic multivitamin like this with targeted nutrients, after checking with a doctor or nephrologist, especially if you have existing kidney disease. Options include potassium citrate or magnesium citrate to help reduce stone-forming risk, cranberry extract or D-mannose for urinary tract comfort, and omega-3 fish oil for vascular health that supports kidney filtration. Others are N-acetylcysteine (NAC) for antioxidant support, CoQ10 for cellular energy and oxidative stress, and herbal options like dandelion leaf, nettle leaf, or corn silk for gentle fluid balance. Drink plenty of water and avoid extra vitamin A, vitamin D, or high-dose minerals beyond what this multi provides if kidney function is reduced.
Possible side effects: Some reviewers find the soft-gels large and hard to swallow, and one customer felt sick after receiving off-color black capsules; most report no stomach upset.
Supplement Facts
Total Carbohydrates 1 g · Vitamin A 1500 mcg · Vitamin C 250 mg
| Calories | 35 | |
| Total Fat | 2 g | |
| Cholesterol | 5 mg | |
| Total Carbohydrates | 1 g | |
| Protein | 1 g | |
| Vitamin A | 1,500 mcg | |
| Vitamin C | 250 mg | |
| Vitamin D3 | 10 mcg | |
| Vitamin E | 134 mg | |
| Thiamine | 20 mg | |
| Riboflavin | 20 mg | |
| Niacin | 20 mg | |
| Vitamin B6 | 20 mg | |
| Folate | 1,020 mcg DFE | |
| Vitamin B12 | 60 mcg | |
| Biotin | 15 mcg | |
| Biotin | 15 mcg | |
| Pantothenic Acid | 20 mg | |
| Calcium | 50 mg | |
| Magnesium | 25 mg | |
| Zinc | 15 mg | |
| Selenium | 75 mcg | |
| Copper | 2 mg | |
| Manganese | 2 mg | |
| Chromium | 120 mcg | |
| Molybdenum | 225 mcg | |
| Crucial Oil Complex | 2,060 mg | † |
| Targeted Blend | 135 mg | † |
| Antioxidant Blend | 60 mg | † |
| Fruit and Vegetable Blend | 57 mg | † |
| Amino Acid Blend | 54 mg | † |
| Immuno Blend | 54 mg | † |
| Adrenal Blend | 24 mg | † |
| Traditional Botanical Blend | 21 mg | † |
| Green Super Food Blend | 18 mg | † |
| Brain Blend | 18 mg | † |
| BioPerine Complex | 6 mg | † |
Other ingredients: Gelatin, Water, Purified, Glycerin, Soybean Oil, Beeswax, Soy Lecithin, Medium Chain Triglyceride Oil, Dicalcium Phosphate, Mannitol, Titanium Dioxide, Sodium Copper Chlorophyllin, Maltodextrin.
Directions: Directions: (Adults) take three (3) liquid soft-gels per day all at once or in divided doses with food and a full glass (8oz) of water.
Barcode (UPC) 710363566890 · Label source: NIH label database · Report a label change
Show entire label
More energy products
Members OnlyThe highest ranked for the same goal
Read more
Our articles on this subject
Graded November 5, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
Privacy policyConsumer health dataTermsDo Not Sell or Share My Personal InformationCookie settings