Skip to main content

A gift to start the year.

HAPPY NEW YEAR

Spend £100 or more and get a free bottle of our new Green Tea Bioactive.

Please note: Green Tea must be added to your cart as a one-time purchase for this to apply.

This is a limited-time offer and will be available until 28 February 2026.

Shop green tea
0
9
0
9
day
0
9
0
9
hour
0
9
0
9
min
0
9
0
9
sec
Everyday Immune Support with Quercetin Bioactive and Vitamin C Complete.
Immune Support
Natroceutics Vitamin C supplement bottle with blue body and silver cap on a white background
Immune Support

Immune Support

Immune resilience through nutrition

Antioxidant · Flavonoid-Rich · Routine-Based · Vegan · Plant-Derived

A simple, plant-based daily protocol with nutrients chosen to support balance and year-round resilience.

Next day delivery available

Our immune system functions best when supported by consistent habits, including sleep, nutrient intake, and antioxidant support. This protocol pairs two ingredients commonly included in wellness routines designed to help the body respond to daily stressors and changing environments.

Quercetin Bioactive delivers a highly absorbable form of quercetin, a plant flavonoid often chosen for immune balance and histamine awareness. Vitamin C Complete offers liposomal vitamin C from Quali-C™, along with citrus bioflavonoids to support cellular health and antioxidant replenishment. Together, these products provide a streamlined daily foundation for immune-aware living.

1 months supply:

Quercetin Bioactive (60 capsules)

Provides Quercefit®, a quercetin extract combined with sunflower lecithin using Phytosome™ technology for improved absorption. Often used in routines focused on histamine regulation and antioxidant balance.

Vitamin C Complete (60 capsules)
Delivers Quali-C™ ascorbic acid in a liposomal format, enhanced with citrus bioflavonoids for broad-spectrum antioxidant coverage. Known for its role in tissue repair and daily immune function.

Opti-Vita Complex (60 capsules)
A comprehensive multinutrient formula including Oxxynea® polyphenols, liposomal vitamins, minerals, and Bio-Enhanced® R-alpha-lipoic acid. Often selected as a nutritional foundation.

Follow label instructions for dosage. Designed for consistent daily use. Adjust seasonally or as needed.

Quercetin Bioactive:
For persons over 18 years: Take 1 to 2 capsules per day with food or as recommended by your healthcare professional.

Vitamin C Complete:
Adults and children over 12 years: Take 1 - 2 capsules per day or as recommended by your healthcare professional

Opti-Vita Complex:
Adults 18 years and older: Take 2 capsules per day for the first 60 days.
Thereafter, take 1 to 2 capsules per day as required or as recommended by your healthcare provider.

Do not exceed recommended daily intake.

Store in a cool, dry place below 25°C. Protect from light and moisture.

All ingredients are carefully selected for quality and absorption. Quercetin Bioactive includes Quercefit® from Indena, Italy, using Phytosome™ delivery for enhanced bioavailability. Vitamin C Complete contains Quali-C™ ascorbic acid, citrus bioflavonoids, and liposomal delivery via Cellg8™ for increased uptake and digestive comfort.

COMPLEMENTARY PRODUCTS

Targeted support, professionally curated.

Find expert designed protocols tailored to specific needs, including sleep, stress, immunity, energy and more.

Find your protocol

Recently viewed