SKU: 67747783724

NutraBio | First Response | 60 Servings

Sale price$26.95 Regular price$29.95
Save 10%

Pay in installments of $7.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

NutraBio | First Response | 60 ServingsHigh dose immune support with NAC and Albion chelated minerals. NutraBio First Response is a no nonsense immune support powder. It sticks to a few solid nutrients at real doses, shows every milligram, and leans on how they work in your body instead of hype. This isn't a throw everything in wellness mix. It's a focused stack for quick support with six ingredients that each pull their weight. Vitamin C is the star at 3,000mg as ascorbic acid. That's a

High-dose immune support with NAC and Albion® chelated minerals.

NutraBio First Response is a no-nonsense immune support powder. It sticks to a few solid nutrients at real doses, shows every milligram, and leans on how they work in your body instead of hype. This isn't a throw-everything-in wellness mix. It's a focused stack for quick support with six ingredients that each pull their weight.

Vitamin C is the star at 3,000mg as ascorbic acid. That's a big dose, way over daily basics, so you know it's built for heavy antioxidant and immune help, not just checking a box. It backs up your white blood cells, keeps skin barriers strong, and refreshes other antioxidants. You won't feel it like a buzz from caffeine, but it's a key player in the defense setup. At this level, some people might want it with food or split up if high ascorbic acid bugs their stomach.

Vitamin D3 comes in at 50mcg, which is 2,000 IU. That's a solid everyday amount for keeping your immune system in check. It's more about guiding your immune cells through receptors than instant feels—it helps manage your body's defense responses. This is a dose that counts, not just for show.

Zinc hits 30mg, spot on the high end of the 15-30mg range, as Albion® zinc bisglycinate chelate. Form matters here. Zinc powers over 300 enzymes and handles immune signals, antioxidant fights, and cell fixes. The bisglycinate chelate boosts how well it absorbs and sits easy on your gut by dodging blockers and using amino acids to get in.

NutraBio First Response by NutraBio contains 3000mg Vitamin C, a effective dose for muscle recovery and growth.

Key Highlights

  • 3,000mg Vitamin C — this isn't some weak add-on. It's a beefy dose for real antioxidant and immune backup, way better than those basic formulas with just a sprinkle for the label.
  • 2,000 IU Vitamin D3 — a smart daily hit for immune balance. It signals your immune cells through receptors, making it a must-have base in this mix for steady use.
  • 30mg Zinc as Albion® Bisglycinate Chelate — right at the top of the researched range. The chelated version absorbs better and goes down easier than cheap forms, perfect for a legit zinc supp.
  • 200mcg Selenium as Albion® Glycinate — a strong dose that boosts glutathione peroxidase and thyroid functions. Here, selenium's a key part of the antioxidant plan, not an afterthought.
  • 3mg Copper as Albion® Bisglycinate Chelate — added smartly, not just for show. High zinc can mess with copper over time, so this keeps things even while helping antioxidant enzymes and iron use.
  • 600mg NAC — a tried-and-true dose that feeds cysteine for glutathione building. It takes this beyond basic C and zinc, adding deeper antioxidant power from inside.
  • Fully disclosed label — every ingredient and dose right there. In a sea of secret blends and herb mixes, this transparency stands out big time.
  • Short formula, high impact — just six ingredients, all with clear roles. No skimpy mushroom mix, no weak elderberry, nothing here just for the hype.

NutraBio First Response by NutraBio contains 3000mg Vitamin C, a effective dose for muscle recovery and growth.

Who Is This For?

  • Athletes wrapping tough training who need recovery boosts when sleep, travel, and loads compete. High C, zinc, selenium, NAC make it stronger than a basic multi for immune defense.
  • Shift workers, healthcare folks, first responders with wild schedules and stress. It fits by hitting core nutrients and antioxidants, no stims or trendy herbs to mess with you.
  • Frequent flyers wanting a easy-carry daily powder with common immune picks. 2,000 IU D3, 30mg zinc, 600mg NAC beat weak gummies or packets.
  • Lifters and runners with training basics down but needing immune help in high-volume times. Fills the gap without clashing with pre or hydration stuff.
  • Label readers who hate prop blends and want good mineral forms. Albion® chelated zinc, selenium, copper upgrade from cheap oxides in basic supps.
  • Folks after a simple, smart mix over 20-ingredient blends. Each here has a real role, doses that matter.

How to Use

Mix 1 scoop with 8-16 oz cold water, once a day. New to big C or NAC doses? Start half scoop a few days to check gut tolerance, then go full. With a meal if your stomach's picky—3,000mg ascorbic and 600mg NAC can bother some empty. Morning or midday works for most, but evening's fine too, no stims. Stacks great with creatine, protein, electrolytes, fish oil—different job. Don't double minerals like zinc, selenium, copper, or D from other supps without tracking. No need to cycle like stims, but check overall nutrients now and then—this is potent. Keep sealed, cool, dry to avoid clumps.

What to Expect

First 0-10 minutes: mix and drink like any powder, no stim kick since it's free of that. 10-30 minutes: not much to feel beyond taste and settling; sensitive to high C or NAC? Food helps here. Day 1: it's about coverage from the 3,000mg C, 30mg zinc, 600mg NAC—no big feel, just support. Days 3-7: steady use builds in D3, selenium, zinc—better as a habit than spotty. Weeks 2-4: adds up, especially for D levels and consistent zinc, selenium, NAC. This one's about feeling covered, not wired.

Key Ingredients

  • Vitamin C — 3000mg — High-potency antioxidant support for intensive immune demands
  • Vitamin D3 — 50mcg (2,000 IU) — Daily immune signaling support at a meaningful dose
  • Zinc — 30mg — Clinical-range zinc for serious immune system support
  • Selenium — 200mcg — Top-end selenium dose for glutathione enzyme support
  • Copper — 3mg — Balances high zinc while supporting antioxidant enzymes
  • N-Acetyl Cysteine — 600mg — Classic NAC dose to support glutathione production

NutraBio First Response by NutraBio contains 3000mg Vitamin C, a effective dose for muscle recovery and growth.

Frequently Asked Questions

What is NutraBio First Response designed to do?

First Response is a fully disclosed immune-support and antioxidant formula built around six actives: 3,000mg vitamin C, 2,000 IU vitamin D3, 30mg zinc, 200mcg selenium, 3mg copper, and 600mg NAC. It is designed to cover core nutrient and glutathione-related pathways rather than relying on proprietary herbal blends.

How much vitamin C is in First Response, and is that a high dose?

Each scoop provides 3,000mg of vitamin C as ascorbic acid. Yes, that is an aggressive dose relative to standard daily formulas, which typically use far less, and it positions this product as more of an intensive support formula than a basic maintenance supplement.

Why does this formula include copper with zinc?

Because the zinc dose is substantial at 30mg. Higher zinc intake can reduce copper status over time, so the 3mg copper inclusion helps balance the mineral profile while also supporting antioxidant enzymes and iron metabolism.

What is special about the mineral forms in this product?

Zinc, selenium, and copper are provided as Albion® chelated forms. Chelation improves stability, absorption, and gastrointestinal tolerance versus many lower-cost inorganic mineral forms commonly used in generic immune products.

How much NAC is in First Response?

Each serving delivers 600mg N-Acetyl Cysteine. That is a classic standalone supplemental dose and is one of the main reasons this formula offers deeper antioxidant support than simple vitamin C + zinc products.

Should I take First Response every day or only when I feel run down?

It can be used either way, but the formula makes the most physiological sense with consistent daily use, especially for vitamin D3 and regular mineral intake. Sporadic use still delivers the ingredients, but daily use better supports steady nutritional coverage.

Can I take this with my pre-workout, creatine, or protein?

Yes. First Response is stim-free and does not overlap heavily with performance formulas, so it stacks cleanly with creatine, protein, electrolytes, and pre-workouts. The main thing to watch is duplicate zinc, selenium, copper, or vitamin D from other health products.

Is this a good choice if I have a sensitive stomach?

Possibly, but use care. The 3,000mg vitamin C dose and 600mg NAC can cause digestive discomfort in some users, so taking it with food or starting with a half scoop is the smartest approach.

Is First Response a daily multivitamin replacement?

Not exactly. It covers several important immune-related nutrients very aggressively, but it is not a broad-spectrum multivitamin with full coverage of all vitamins and minerals.

Does this formula contain any proprietary blends?

No. One of the product’s strongest advantages is that the label is fully disclosed, so you can see every ingredient and every dose.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67747783724

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 11 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Ce
New York, US
★★★★★ 5
Comfortable
Size: 7, Color: Black
Super comfy and stylish, I’ve never worn these styles of loafers however I’m glad I purchased these. I’ve purchased another pair in a different color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
C
Verified Purchase
Cameron
Pawtucket, US
★★★★★ 3
Meh
Size: 10, Color: Black
I had a real leather version of these shoes for many years. They are still totally wearable, however the soles have worn smooth from using them so much. so naturally I buy a new pair. These are the same design. the stitching is close, the pattern in the leather is the same. But they are so much cheaper. There is no real leather. It's all synthetic. The sole is not the same quality of rubber. The stitching is not as good. They look fine, brand new, yet I am sure they will not last. these are cheap. They also cost less, so I guess they are an average value, but I am very annoyed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2025
A
Verified Purchase
Amazon_Customer
Bozeman, US
★★★★★ 5
The "Lazy Professional" Look: Is Hands-Free Luxury Actually Real?
Size: 9.5, Color: Black Napa Leather
Living down here in Florida, my footwear needs are pretty specific. It’s hot, it’s humid, and I spent half my life rushing from the car into work or a meeting. I’ve reached that age where I value efficiency just as much as style—maybe more. I’ve been eyeing the Marc Joseph New York Hands-Free Slip-on Penny Loafers for a while, and after putting them through the wringer, here is the honest truth from someone who just wants to look sharp without the hassle. The "Just Step-In" Reality Look, the big selling point here is the "Hands-Free" tech. We’ve all seen the commercials for those athletic slip-ins, but finding that in a legitimate leather penny loafer is a different game. Does it work? Yes, surprisingly well. The heel counter is firm enough that it doesn’t collapse when you slide your foot in, but it doesn’t feel like a piece of plastic digging into your Achilles once you’re in. For those of us who are tired of bending over or hunting for a shoehorn every morning, this is a genuine quality-of-life upgrade. The Florida Factor: Comfort and Style The leather is actual calfskin (on most models), which is a must for the Florida heat. Synthetic shoes turn into a sauna within ten minutes, but these breathe reasonably well. The aesthetic is classic—it’s a "professor" shoe through and through. You can wear them with chinos and a blazer for work or throw them on with some nice jeans for a weekend lunch. Inside, they’ve got a gel heel insert and a padded footbed. It’s not quite "walking on a cloud"—let’s not over-hype it—but it’s a massive step up from the hard, flat soles of traditional dress loafers. I’ve spent four hours on my feet lecturing, and my arches didn’t hate me by the end of the day. The Sizing Gamble Here’s where you need to be careful. The consensus from other guys (and my own experience) is that the sizing is a bit of a coin toss. They tend to run a little large and sometimes wide. If you have narrow feet, you might find the sides "gaping" or flaring out when you walk, which kills the sleek look. I’d recommend ordering a half-size down if you’re usually between sizes. The Breakdown The Pros: True Hands-Free: You can actually put these on while holding a coffee and a briefcase. No hands needed. Legit Materials: The calf leather feels premium and smells like the real deal. Versatility: Perfectly bridges the gap between a "car shoe" and a formal loafer. Comfort: The gel insert makes a noticeable difference for long-duration wear. The Cons: Sizing Inconsistency: They can run wide, leading to some "heel slip" if you don't get the perfect fit. Break-in Period: The heel is stiff by design (to allow for the slip-on feature), so expect a day or two of minor stiffness. Price Point: They aren't cheap, though often on sale. Value for Money Are they worth it? If you’re comparing them to high-end Italian brands that cost $500, these are an absolute steal. They look 90% as good for a fraction of the price. However, if you're used to $60 mall shoes, the jump to $150+ might feel steep until you realize you’re paying for the convenience of never having to touch your shoes to put them on. For a daily driver in a professional setting, the value is definitely there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
E
Verified Purchase
Edward A. Cleveland
Charlottesville, US
★★★★★ 5
Step In Look Good
Size: 11.5, Color: Cognac Napa Leather
I am wearing these shoes as I write this review, and they look and feel great. I have a bit of a disability with drop foot on the right leg and bilateral neuropathy and have been wearing step in shoes for about 10 years. But the first company that introduced leather dress and casual shoes stopped making them and now only makes sport and casual shoes. So I have been searching for some that meet my need for shoes like this and this company has given me three pairs, so far. Easy to get into, comfortable to wear, and good looking. And they take polish very well, too. (Remember how to do that?). We may buy another pair or two in different styles as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
B
Verified Purchase
Book dude
Battle Creek, US
★★★★★ 4
Runs tight. Skinny and smaller than other brands.
Size: 8.5, Color: Brown
Comfy and lots of support. Cushiony. Beware: the brown I ordered runs small. Tighter than other brands.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026

recommand products