NuviaLab Immune Review 2026An Honest Look at the Label

What is in it, per 2 capsules: yeast extract (60% nucleotides) 300 mg, elderberry extract 300 mg, rosehip extract 142.86 mg, quercetin 100 mg, rutin 50 mg, vitamin D 50 µg (2,000 IU), zinc 10 mg, and vitamin C 250 mg in total.

What the evidence says:

• Vitamin C does not prevent colds in the general population (RR 0.97) but shortens them by about 8% in adults.
• Vitamin D lowers infection risk mainly in people with very low levels.
• Quercetin is at 10% of the dose the sales page's own 1,002-person study used, and that study found no effect overall.
• We found no human trial of the yeast nucleotide extract.

There is no money-back guarantee; the terms allow 10 days from purchase.

Our Dose Check compares each label amount with the best human study.

• Vitamin C: 250 mg vs 1 to 2 g a day in the trials where children's colds shortened. 12.5 to 25%. It prevents no colds at any dose in the general population.
• Vitamin D: 2,000 IU, within the NHS 4,000 IU limit. Benefit is concentrated in people with low levels.
• Zinc: 10 mg vs 45 to 276 mg a day in lozenge trials. 4 to 22%. Within the NHS 25 mg limit.
• Quercetin: 100 mg vs 500 to 1,000 mg a day. 10 to 20%, and no overall effect at those doses.
• Elderberry extract: 300 mg, standardised on vitamin C rather than anthocyanins. Trial doses not in the abstract.
• Yeast nucleotides: 300 mg (about 180 mg nucleotides). No trial found.

The directions say 2 capsules a day with a meal. A 60-capsule bottle lasts a month.

Our Transparency Score checks five things a buyer can verify. NuviaLab Immune scores 2 out of 5.

• Label with doses: yes. Every ingredient has an amount in the text panel.
• Identifiable company: no. The German terms name "Key Player Limited" at Dubai Airport Freezone and apply UAE law; the US terms name "NuviaLabImmune.com" in Hong Kong. NuviaLab's own store prints "NuviaLab LLC" in Wilmington, Delaware, as manufacturer, which the sales pages do not.
• Refund terms in writing: yes. 10 calendar days from purchase, unused goods only.
• Independent testing shown: no. The page shows an "Im Labor getestet" (tested in a laboratory) badge but no report.
• Study on the finished product: no. The quercetin study it cites used ten times the capsule's dose.

NuviaLab has 1.9 out of 5 from 148 reviews on Trustpilot; complaints concern returns of opened or unopened bottles.

Correction. An earlier version of this review listed a generic immune stack (vitamin C 500 to 1,000 mg, NAC, beta-glucans, elderberry 600 to 1,500 mg), said the product lands "within or above" those doses, said it was made in a GMP-certified facility, gave a price of $44 and promised subscription savings. The label has none of NAC or beta-glucans, elderberry at 300 mg, no GMP claim and no subscription. We have corrected it.

Prices when we checked in September 2026:

• German site (where our link leads, in German): €49.99 for 1 bottle, €99.98 for 2+1 (€33.33 each), €149.97 for 3+3 (€25.00 each).
• US site: $53.99, $107.98 ($35.99 each) and $161.97 ($26.99 each).
• NuviaLab's own store: $59.99 for one bottle, $30.00 each in a 6-pack.

That is about €1.67 a day for one bottle and €0.83 a day for six (our calculation). We could not verify shipping costs.

Refunds. The German page offers no money-back guarantee. The terms say "kann ein Kunde jederzeit innerhalb von 10 Kalendertagen gerechnet ab dem Kaufdatum des Produktes die Transaktion rückgängig machen" (the customer may cancel within 10 calendar days of purchase), after a written statement, with goods showing no signs of use, and "Die Anwendung des EU-Rechts ist ausgeschlossen" (EU law does not apply). NuviaLab's own store allows 14 days from receipt and excludes "any opened and used ... tablets or supplements".

• Vitamin C: 250 mg is well under the level where the NHS says more than 1,000 mg a day "can cause: stomach pain, diarrhoea, flatulence".
• Vitamin D: 2,000 IU is within the NHS limit of 4,000 IU a day. The label gives no advice to test your level first.
• Zinc: 10 mg is within the NHS 25 mg limit; the NHS says more zinc reduces copper absorption.
• Quercetin, elderberry, yeast extract, rutin: we read no safety data at these doses.

The sales page says the product "keine unerwünschten Reaktionen hervorrufen sollte" (should not cause unwanted reactions). The label's caution is only "Not suitable for children, pregnant or lactating mothers". There is no clinical study on NuviaLab Immune itself.