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