The Promise
Vitamin C Complex.
Rosehip and bioflavonoid support.
Vitamin C Complex pairs 1,040 mg vitamin C with citrus bioflavonoids and rosehips in a vegan, Non-GMO formula made in the USA and third-party tested for purity and potency.
1,040mg Vitamin C
Per 1-tablet serving
Rosehip + Bioflavonoids
Whole-food synergy
Vegan · Non-GMO
Made in the USA
Third-Party Tested
Purity & potency verified
Why It Works
Vitamin C, completely.
01
Immune System Activation
Vitamin C is concentrated up to 80× inside phagocytes and neutrophils — the front-line immune cells. It stimulates production and function of lymphocytes, supports antibody levels, and enhances the skin barrier’s first line of defense against pathogens.
02
Collagen & Skin Health
Vitamin C is required for the hydroxylation of proline and lysine — the cross-linking steps that give collagen its tensile strength. Without adequate C, collagen fibers are structurally weakened. Daily supplementation directly supports skin integrity, wound healing, joint cartilage, and vascular elasticity.
03
Antioxidant Defense
As a water-soluble antioxidant, vitamin C neutralizes free radicals in plasma and intracellular fluid. Citrus bioflavonoids and rosehip polyphenols in this formula regenerate oxidized ascorbic acid back to its active form — extending protection far beyond the ascorbic acid itself.
04
Iron Absorption & Energy
Vitamin C converts non-heme (plant-sourced) iron from ferric to ferrous form, dramatically increasing its intestinal absorption. For those on plant-based diets or with iron-deficiency fatigue, taking Vitamin C Complex with meals or iron supplements is one of the most impactful interventions available.
Customer Reviews
Tried, tested,
truly loved.
Daily Ritual
How to use
Vitamin C Complex
Morning
Vitamin C is water-soluble and reaches peak plasma concentration within 1–2 hours of ingestion. Taking with breakfast ensures peak levels during the most metabolically active part of the day — maximizing immune cell support, collagen synthesis, and iron absorption from your morning meal.
Optional
Because vitamin C has a relatively short plasma half-life (approximately 30 minutes to 2 hours at saturation), splitting your dose — 1–2 tablets with breakfast and 1 with dinner — maintains more consistent plasma levels throughout the day, particularly beneficial during illness or high-stress periods.
Standard Protocol
Full-Spectrum Formula
What's inside,
and why it matters.
The essential water-soluble antioxidant.
Ascorbic acid is the biologically active form of vitamin C — a water-soluble antioxidant essential for immune cell function, collagen hydroxylation, neurotransmitter synthesis, and non-heme iron absorption. Humans cannot synthesize vitamin C endogenously; dietary and supplemental sources are required daily.
USP-grade L-ascorbic acid · Non-GMO corn-sourced · 500mg per tablet.
Regenerate and amplify vitamin C activity.
Citrus bioflavonoids — including hesperidin, naringenin, and rutin — are the polyphenolic compounds that accompany vitamin C in whole citrus fruit. They recycle oxidized ascorbic acid (dehydroascorbic acid) back to its active reduced form, effectively extending the antioxidant activity of each vitamin C molecule. They also provide independent anti-inflammatory and capillary-strengthening effects.
Citrus sinensis peel extract · Standardized bioflavonoid content.
Whole-food vitamin C intelligence.
Rosehip (Rosa canina) fruit provides naturally occurring catechins, quercetin, ellagic acid, and carotenoids — bioactive compounds that provide anti-inflammatory, antioxidant, and joint-protective activity entirely distinct from ascorbic acid. Traditional use for immune and skin health has been validated by modern research into its polyphenolic profile.
Rosa canina fruit standardized extract · Freeze-dried to preserve bioactives.
Dr. Devin Ryerson
Founder & Chief Curator · Est. 1999Why It Matters
Built by someone with
personal stakes in it.
Devin started Pure Prescriptions in 1999 after battling Hodgkin's Lymphoma and losing his father to leukemia. That experience made him the most stubborn kind of formulator — one who refuses to ship anything he wouldn't take himself.
Every ingredient here earned its place through clinical evidence, third-party testing, and that same personal lens — the five collagen types, the organic fruiting-body mushrooms, the co-factors. Nothing is decorative.
"Pure Prescriptions has always been more personal than corporate. Built by family. Still independent."
Our StoryYour Journey
What to expect
Vitamin C works immediately but builds its deepest benefits over months.
DAY 1–7
Plasma Levels Optimized
Vitamin C reaches peak plasma saturation within days. Immune cells begin concentrating ascorbate up to 80× higher than plasma — activating neutrophil and phagocyte function.
IMMUNE CELL ACTIVATION
WEEK 4
Collagen Synthesis Deepens
With consistent daily dosing, collagen hydroxylation improves measurably. Many users report improved skin hydration, firmness, and wound healing capacity. Joint cartilage maintenance begins.
SKIN & COLLAGEN SUPPORT
WEEK 8
Antioxidant Reserves Built
Bioflavonoid-mediated recycling of ascorbate has established a more robust antioxidant reserve. Users with high oxidative stress (smokers, athletes, high-stress lifestyles) notice measurable improvement in energy and recovery.
ANTIOXIDANT DEFENSE
MONTH 3+
Full Immune Resilience
Long-term vitamin C supplementation is associated with reduced duration and severity of respiratory illness, improved adaptive immune function, and measurably lower inflammatory marker levels. The full benefit of the bioflavonoid complex is realized.
SUSTAINED IMMUNE RESILIENCE
Vitamin C Complex · Pure Prescriptions®
The Science
Why bioflavonoids change everything.
Vitamin C doesn’t appear alone in nature. In an orange, ascorbic acid is always accompanied by hesperidin, naringenin, rutin, quercetin, and dozens of other bioflavonoids and polyphenols that protect and amplify it.
Most vitamin C supplements contain only isolated ascorbic acid. Vitamin C Complex restores the natural context — citrus bioflavonoids recycle oxidized vitamin C back to its active form, and rosehip adds polyphenols that provide independent antioxidant and anti-inflammatory activity.
- Bioflavonoids recycle ascorbate, multiplying its effective duration
- Rosehip polyphenols provide independent anti-inflammatory activity
- Whole-food complexity vs. isolated ascorbic acid alone
- 1,040mg vitamin C — the dose studied for immune benefit
Have Questions?
Everything you need to know.
Honest answers — no marketing spin. If your question isn’t here, our team responds within one business day.
Isolated ascorbic acid is effective, but vitamin C never appears alone in food. In citrus, rosehip, and other whole food sources, it’s naturally complexed with bioflavonoids, catechins, quercetin, and ellagic acid — compounds that provide independent antioxidant activity and, critically, recycle oxidized vitamin C back to its active form. This “vitamin C complex” approach provides broader, more durable antioxidant protection than ascorbic acid alone.
The suggested use is 1 to 2 tablets daily. One tablet provides 1,040 mg of vitamin C. Most research supporting immune, collagen, and antioxidant benefits has used 500–1,000 mg/day. During illness, intense exercise, surgery, or periods of high stress, the body’s vitamin C turnover increases dramatically and higher intakes may be warranted. Consult your healthcare professional for personalized dosing.
Yes — and several combinations are particularly beneficial. Take with an iron supplement or iron-rich meal to enhance iron absorption. Pair with our Ultimate Vitamin D3 for comprehensive immune support (as Thomas F. does in his review). Stack with our Perfect Immune® or Zinc Picolinate for a complete immune protocol. Vitamin C is water-soluble and generally very safe in combination.
Yes. Vitamin C Complex is certified vegan, Non-GMO, and manufactured in the USA. It contains no animal-derived ingredients — the vitamin C, rosehip extract, and citrus bioflavonoids are all plant-sourced. It is also free of gluten, soy, dairy, and artificial colors or preservatives.
Standard vitamin C supplements contain only ascorbic acid. Vitamin C Complex adds 40 mg of citrus bioflavonoids and 10 mg of rosehip extract per serving. Bioflavonoids provide synergistic antioxidant activity and recycle oxidized vitamin C — effectively extending its protective capacity. Rosehip adds catechins, quercetin, and ellagic acid for additional anti-inflammatory benefits. Together they replicate the way vitamin C appears in whole foods.
Vitamin C is best absorbed with food, though it can be taken without. Morning with breakfast is the most common approach — it ensures peak plasma levels during the day’s most active period. If taking 2 tablets, splitting the dose (e.g., 1 with breakfast and 1 with dinner) may provide more sustained plasma levels throughout the day, as vitamin C has a relatively short plasma half-life.
Doctor’s Protocol
How I’d build your
complete immune defense.
“Vitamin C is the foundation of every immune protocol I build. Add D3 for adaptive immune modulation, Zinc for T-cell support and wound healing, and Perfect Immune for NK cell activation. Together these cover every layer of the immune system — innate, adaptive, and cellular.”
In Order of Priority
4 Products · 1 Protocol
Immune · Antioxidant · Collagen
Vitamin C Complex
Start here. Ascorbic acid with rosehip and citrus bioflavonoids — the way vitamin C appears in nature. Supports immune function, collagen synthesis, antioxidant defense, and liver detoxification.
Bone · Immune · Mood
Ultimate Vitamin D
Vitamin C and D3 are the two most important micronutrients for immune function — and they work through completely different mechanisms. Vitamin C supports innate immunity (phagocytes, neutrophils) while D3 modulates adaptive immunity (T-cells, B-cells) and reduces inflammatory cytokine production. Together they form the most complete immune protocol.
Immune · Wound Healing
Zinc Picolinate
Zinc and vitamin C are synergistic at every level of immune function — zinc is required for T-cell maturation and thymulin production, while vitamin C supports neutrophil function and phagocytosis. Both are depleted during infection; replenishing both together provides more complete immune support than either alone.
Complete Immune Defense
Perfect Immune
Perfect Immune® provides AHCC®, beta-glucans, elderberry, and astragalus — immune-modulating compounds that activate NK cells and macrophages through Toll-like receptor pathways entirely different from vitamin C's mechanisms. Combined, they provide a multi-layered immune defense: vitamin C for phagocyte support, Perfect Immune for NK cell and adaptive immunity activation.
Add the full protocol — earn $25 store credit on your next order.
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Founded
Owned & Operated
In the USA
