Meridian Medica — Rose Hips

01

Identity

Botanical Profile

Rosa spp. (primarily Rosa canina L., Rosa rugosa, Rosa laevigata) — Fruit (pseudocarp/hip), dried whole or powdered; seeds for oil. Rosa canina native to Europe, northwest Africa, and western Asia. Rosa rugosa native to eastern Asia. Wild roses distributed across all temperate regions worldwide. Rose hips have been used as food and medicine since prehistoric times.

Hips: tart, fruity, mildly sweet with a floral rose undertone. Dried hips: concentrated tartness with a slightly woody note. Tea: beautiful ruby-red color, tangy and refreshing. Powder: tart and slightly astringent. Seeds contain irritating hairs (itching powder) that must be strained out during preparation.

Species Integrity

Rosa canina (dog rose) is the primary species used in European herbal medicine and most clinical research. Rosa rugosa hips are larger and easier to harvest. Both are therapeutically equivalent for vitamin C and polyphenol content.

02

Compounds

Active Compound Profile

Vitamin C (L-ascorbic acid)

500–2,500 mg per 100g fresh hips (varies by species and ripeness)

Antioxidant; collagen synthesis cofactor; immune cell function; enhances non-heme iron absorption; supports adrenal function and cortisol metabolism

Galactolipid (GOPO)

Present in seeds and hip flesh

Anti-inflammatory; inhibits neutrophil chemotaxis and reduces inflammatory cytokine production (IL-6, TNF-α, CRP); mechanism distinct from NSAIDs

Carotenoids (lycopene, beta-carotene, lutein, zeaxanthin)

Total carotenoids 5–15 mg per 100g fresh hips

Antioxidant; singlet oxygen quenching; support retinal health; lycopene provides cardiovascular protection

Polyphenols (proanthocyanidins, flavonoids, ellagic acid)

2–5% of dried hips

Antioxidant; NF-κB modulation; support vascular integrity; anti-aging effects on skin collagen

Tiliroside

Present in hip flesh

AMPK activator; anti-obesity; anti-inflammatory; inhibits hepatic lipogenesis

Absorption

Gentle processing to preserve vitamin C: Vitamin C is heat-labile and water-soluble; high-heat processing destroys 50–90% of vitamin C content

03

Pathways

Mechanism of Action

★★★☆☆ Vitamin C / Collagen Synthesis Vitamin C is an essential cofactor for prolyl and lysyl hydroxylase enzymes that stabilize collagen triple helix structure. Deficiency causes impaired collagen integrity affecting skin, joints, vessels, and connective tissue.

★★★☆☆ Adrenal Function / Cortisol Metabolism The adrenal glands contain the highest concentration of vitamin C in the body. Vitamin C is consumed during cortisol synthesis and is rapidly depleted during stress. Adequate vitamin C supports healthy adrenal output.

★★★☆☆ Iron Absorption Enhancement Ascorbic acid reduces ferric (Fe3+) iron to ferrous (Fe2+) form, increasing non-heme iron absorption 2–6x. Also forms soluble iron-ascorbate chelates that resist precipitation by phytates and tannins.

★★★☆☆ GOPO Anti-Inflammatory (Galactolipid) GOPO galactolipid inhibits neutrophil migration to inflamed tissues and reduces CRP, IL-6, and TNF-α production through a mechanism distinct from COX inhibition

★★★☆☆ Antioxidant / Thyroid Protection Vitamin C, carotenoids, and polyphenols collectively provide broad antioxidant defense, protecting thyroid peroxidase and thyroid tissue from hydrogen peroxide-mediated oxidative damage

04

Biomarkers

What It Moves in Your Labs

Biomarker	Direction	Target	Mechanism
hs-CRP	↓ Decrease	<1.0 mg/L	GOPO galactolipid inhibits neutrophil chemotaxis and reduces hepatic CRP production; vitamin C antioxidant reduces inflammatory signaling
Plasma Vitamin C	↑ Increase	>50 μmol/L (optimal: >70 μmol/L)	Direct dietary repletion from the richest natural vitamin C source; whole-food matrix enhances utilization
Ferritin	↑ Increase	50–150 ng/mL	Indirect: vitamin C enhances non-heme iron absorption 2–6x, supporting iron store repletion in hypothyroid iron deficiency
TPO Antibodies	↓ Decrease	<35 IU/mL	Indirect: antioxidant protection of thyroid tissue; anti-inflammatory GOPO reduces immune activation; vitamin C supports immune regulation

05

Extraction

Extraction & Preparation

Cold infusion (room temp, 4–8 hours): 95%+ vitamin C; excellent polyphenol extraction; minimal GOPO

Solubility · Highly water-soluble; heat-labileMenstruum · 50% ethanol / 50% waterPlant material · Dried rose hips, crushed (seeds and seed hairs strained after maceration)Maceration time · 4–6 weeks (agitate daily)Ratio · 1:5 (dried)

07

Dosing

Dosing Framework

Rose hip tea can be consumed throughout the day; no timing restrictions relative to thyroid medication at standard separation.

Dose 1

Nutritional: 1–2 cups rose hip tea daily

Basic daily vitamin C from whole food source; pleasant flavor encourages compliance

Dose 2

Therapeutic: 5–10g rose hip powder daily

This is the clinical trial dose range; freeze-dried/cold-processed powder preserves GOPO

Dose 3

Iron absorption support: 1 cup tea with iron-rich meals

Time rose hip tea consumption with iron-rich meals or iron supplements for 2–6x absorption enhancement

08

Synergies

Synergy Partners

★★★☆☆ Nettle (Urtica dioica) Rose hip vitamin C enhances absorption of nettle iron by 2–6x; combined tea provides comprehensive vitamin C + iron + mineral delivery

★★★☆☆ Hibiscus (Hibiscus sabdariffa) Hibiscus anthocyanins provide additional cardiovascular protection; ACE-inhibiting activity complements rose hip CRP reduction; the combination is more delicious than either alone

★★★☆☆ Elderberry (Sambucus nigra) Elderberry anthocyanins + rose hip vitamin C = synergistic immune support; complementary antioxidant mechanisms

★★★☆☆ Turmeric (Curcuma longa) Rose hip GOPO anti-inflammatory + curcumin NF-κB inhibition = multi-pathway joint inflammation support

★★★☆☆ Ashwagandha (Withania somnifera) Rose hip vitamin C supports adrenal function + ashwagandha adaptogenic HPA axis modulation = comprehensive adrenal recovery support

Signature Stack

THE IRON REPLETION DUO
Components: Rose Hips (vitamin C) + Nettle Leaf (iron, minerals) · Multi-pathway convergence: Vitamin C iron absorption enhancement (rose hip, 2–6x increase) + Bioavailable plant iron delivery (nettle) + Mineral repletion (both plants) + Antioxidant defense (rose hip polyphenols) · The Iron Repletion Duo is the most elegant solution to hypothyroid iron deficiency in the Meridian Medica protocol. Rather than poorly-tolerated iron supplements, this combination provides food-source iron from nettle enhanced by the most potent natural vitamin C source available. · Practical integration: Combine 1 tbsp crushed rose hips + 1 tbsp nettle leaf in a cup; steep in warm water (175°F) for 15–30 minutes. Drink 2–3 cups daily, especially with iron-rich meals. Cost: approximately $0.15–0.30/cup from bulk herbs.

09

Safety

Contraindications & Interactions

Minor Seed hair irritation Rose hip seeds are covered in fine, irritating hairs (historically used as 'itching powder'). If ingested, these hairs can irritate the GI tract and throat.

Minor Oxalate content Rose hips contain moderate oxalates. Individuals with a history of calcium oxalate kidney stones should moderate intake.

Minor Vitamin C and kidney stones (high dose) Very high-dose vitamin C (>2,000mg/day) may increase urinary oxalate in susceptible individuals, theoretically increasing kidney stone risk.

Avoid Pregnancy / Lactation Rose hip tea is safe during pregnancy and lactation at food-level doses. The vitamin C content is beneficial. No known contraindications for moderate consumption.

Minor Iron overload (hemochromatosis) Vitamin C dramatically enhances iron absorption. Individuals with hemochromatosis or iron overload conditions should not combine rose hip with iron-rich foods or supplements.

11

Evidence

Evidence Base

★★★★☆ Osteoarthritis / Joint Pain (GOPO) Strong — Multiple RCTs and meta-analysis

★★★☆☆ Anti-Inflammatory / CRP Reduction Moderate — Clinical trial evidence for CRP reduction

★★★★☆ Vitamin C Delivery (Whole-Food Source) Strong — Well-characterized nutritional composition; centuries of traditional use

★★★☆☆ Cardiovascular Risk Reduction Moderate — Small but positive RCT data

★★☆☆☆ Skin Health (Topical Seed Oil) Preliminary — Small studies and clinical observations

Evidence Gaps

The highest-value research gap for Meridian Medica: no published study has evaluated rose hip vitamin C specifically for iron absorption enhancement in Hashimoto's patients with concurrent iron deficiency anemia. Given that iron deficiency is common in Hashimoto's (affecting thyroid peroxidase function) and rose hips are the richest natural vitamin C source, an RCT comparing iron absorption from nettle tea with and without rose hip co-administration in Hashimoto's women with documented iron deficiency would validate the Iron Repletion Duo approach.

Quality Alert

Rose hip adulteration is less of a concern for whole dried hips but applies to processed products:

12

Protocol

Protocol Integration

Layer 1: Hypothalamic / Autonomic — HPA axis, circadian rhythm, stress response

Layer 2: Systemic Nutritional Repletion — Micronutrient optimization, antioxidant defense

Layer 3: Gut Permeability / Microbiome — Tight junction repair, motility, SIBO management

Recipe Integration

Rose Hip + Hibiscus + Nettle Infusion (signature preparation)

3 tbsp rose hips + 1 tbsp each hibiscus and nettle per quart

Feed the Markers

Rose Hips appear in the following Meridian Medica protocol contexts: