Top 5 — Ranked by Evidence
Very Strong
BLIS K12® (Streptococcus salivarius for ENT — Stratum Nutrition)
Upper Respiratory Infection Prevention
1 billion CFU/day BLIS K12 (research-validated)
Very Strong
Vitamin D
Respiratory infections
RDA: 600-800 IU/day. Optimal serum 25(OH)D: 30-50 ng/mL (typically 1,000-2,000 IU/day
Moderate
AlvioLife® (Respiratory Health & Performance)
Lung function improvement (FEV1 up to 16%)
Per AlvioLife® clinical dosing; PLT Health Solutions product specifications
Strong
Quercefit® (Quercetin Phytosome — Indena)
Allergic Rhinitis and Mild Asthma Symptom Relief
250-500 mg/day Quercefit (research-validated)
Strong
Andrographis
Upper respiratory tract infections
Standard URI dose: 200-1,200 mg/day andrographis extract standardized to ≥10% androgr
📈 Fastest Growing Respiratory Health Ingredients
Branded ingredients seeing rapid growth in formulator adoption and clinical research in 2024–2026.
Trending
Strong
Quercefit® (Quercetin Phytosome — Indena)
Allergic Rhinitis and Mild Asthma Symptom Relief
250-500 mg/day Quercefit® (delivering ~100-200 mg quercetin), one or two tablets daily, across…
Trending
Strong
ParActin® (Andrographis Extract — HP Ingredients)
Joint comfort in osteoarthritis
Standard formulation use: 100-300 mg ParActin® once or twice daily. Take with food to reduce…
Trending
Strong
ThymoQuin® (Black Seed Oil — TriNutra)
Respiratory support applications
Standard formulation use: 500-1,000 mg ThymoQuin® daily. Cardiometabolic protocols typically…
🔬 Future Respiratory Health Ingredients to Watch
Lower current evidence but active research underway — these may become top picks within 2–3 years.
Watch
Moderate
ImmuseLC-Plasma (Lactococcus lactis strain Plasma)
Plasmacytoid dendritic cell activation
100 billion (10¹¹) heat-killed L. lactis strain Plasma/day standard RCT dose. Kirin iMUSE® +…
Watch
Moderate
Lactobacillus paracasei (Multi-Strain Specialist)
Upper respiratory symptom duration
L. CASEI 431® RESPIRATORY: ≥1×10⁹ CFU/day × 42 days. KW3110 POLLEN ALLERGY: 4×10¹⁰ CFU/day…
Watch
Moderate
Elderberry
Reduced cold and flu duration
600–900 mg extract/day during illness; 150–300 mg/day for prevention
Recommended Respiratory Health Products
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Real products featuring the best-evidenced respiratory health ingredients ranked above - chosen for clinically-studied forms and doses, third-party testing, and value. Match the supplement to your specific need.
Best for immune-supporting vitamin D
Amazon →
Sports Research Vitamin D3 5000 IU with Coconut MCT Oil
5,000 IU (125 mcg) softgels, 360 ct
High-potency D3 blended with coconut MCT oil for absorption, non-GMO verified; a year-plus supply for immune support.
Best for value NAC
Amazon →
NOW NAC 600 mg with Selenium
600 mg veg capsules, 250 ct
Standard 600 mg NAC with selenium and molybdenum cofactors; a glutathione precursor in a large economical bottle.
Best for absorbable quercetin
Amazon →
Thorne Quercetin Phytosome
250 mg quercetin phytosome/capsule, 60 ct
Uses a phytosome complex marketed as far more bioavailable than standard quercetin; popular for seasonal/immune support.
Best for elderberry immune support
Amazon →
Sambucol Black Elderberry Original Formula Syrup
Black elderberry extract syrup, 7.8 fl oz
The original, widely studied black elderberry brand in an easy liquid format; rich in anthocyanin antioxidants.
All Respiratory Health Ingredients (41)
Very Strong
BLIS K12® (Streptococcus salivarius for ENT — Stratum Nutrition)
Upper Respiratory Infection Prevention
1 billion CFU/day BLIS K12 (research-validated)
Very Strong
Vitamin D
Respiratory infections
RDA: 600-800 IU/day. Optimal serum 25(OH)D: 30-50 ng/mL (typically 1,000-2,000 IU/day
Moderate
AlvioLife® (Respiratory Health & Performance)
Lung function improvement (FEV1 up to 16%)
Per AlvioLife® clinical dosing; PLT Health Solutions product specifications
Strong
Quercefit® (Quercetin Phytosome — Indena)
Allergic Rhinitis and Mild Asthma Symptom Relief
250-500 mg/day Quercefit (research-validated)
Strong
Andrographis
Upper respiratory tract infections
Standard URI dose: 200-1,200 mg/day andrographis extract standardized to ≥10% androgr
Strong
Black Seed Oil
Allergic rhinitis and asthma support
Standard cardiometabolic dose: 500-2,000 mg/day cold-pressed black seed oil. Higher-d
Strong
NAC (N-Acetylcysteine)
Respiratory Health
600–1,800 mg/day in divided doses; respiratory: 600 mg twice daily; liver support: 60
Moderate
Codonopsis pilosula (Dang Shen / Poor Man's Ginseng)
COPD herbal formulae meta-analysis
TCM TYPICAL: 9-15 g/day root decoction. oncology adjunct: oral liquid (approved Chine
Strong
Bacillus clausii (Enterogermina® / Erceflora)
Recurrent respiratory infections in children
2-4 billion CFU/day Bacillus clausii spores (Enterogermina®); gut-immune axis effect
Strong
Menthol
Respiratory symptom relief — sensation, not actual decongestion
IBS (enteric-coated peppermint oil): 180-225 mg L-menthol equivalent 3×/day (IBgard®)
Moderate
Thyme (Thymus vulgaris)
Acute Bronchitis Cough Reduction (RCT-Confirmed)
BRONCHIPRET® THYME-IVY: 5.4 mL × 3/day × 11 d. BRONCHIPRET® TP: 1 tablet × 3/day × 11
Moderate
Bromelain
Sinus and respiratory support
200–400 mg/day (500–2,000 GDU) for anti-inflammatory; 400–800 mg/day with meals for d
Moderate
Butterbur (Petasites hybridus)
Asthma and respiratory anti-inflammatory effects
50–75 mg twice daily PA-free Petadolex® (75–150 mg/day) for migraine prevention; alle
Moderate
Codonopsis lanceolata (Deodeok / Korean Bonnet Bellflower)
Traditional pulmonary use
TCM TYPICAL: 9-15 g/day root decoction. SARCOPENIA RCT (Park 2022 protocol): 750 mg w
Moderate
Verilla® (Perilla Extract for Seasonal Allergy)
Nasal and eye comfort
Around 50 to 200 mg of rosmarinic acid per day.
Strong
ThymoQuin® (Black Seed Oil — TriNutra)
Respiratory support applications
500-1000 mg/day ThymoQuin® black seed oil standardized to ≥3% thymoquinone
Limited
CM-Glucan™ Nu
Fewer/shorter upper-respiratory symptoms
100 mg/day
Limited
Attenutin® (Scutellaria and Acacia for Respiratory Health — Unigen)
Respiratory support
Per the product specification.
Limited
Eyebright (Euphrasia officinalis)
Upper respiratory mucosal support
Oral: 400–800 mg/day dried herb or standardized extract; ophthalmic solution: 1–2 dro
Limited
Slippery Elm
Cough/Sore Throat Symptomatic Relief
STANDALONE: 2-4 g powdered inner bark in water 3-4×/day OR 400-500 mg caps 3×/day. LO
Moderate
Lactobacillus paracasei (Multi-Strain Specialist)
Upper respiratory symptom duration
L. CASEI 431® RESPIRATORY: ≥1×10⁹ CFU/day × 42 days. KW3110 POLLEN ALLERGY: 4×10¹⁰ CF
Limited
Berriqi® (Boysenberry and Apple Polyphenols — Anagenix)
Airway and respiratory support
A daily serving of the standardized polyphenol concentrate.
Moderate
Licorice Root (Glycyrrhiza glabra)
Respiratory and anti-inflammatory effects
DGL for GI: 380–760 mg chewable before meals; whole licorice: 200–600 mg/day (limit t
Very Strong
Vitamin A
Childhood Mortality Reduction in Deficient Populations
700–900 mcg RAE/day (adults); upper limit 3,000 mcg RAE/day
Strong
Beta-Glucans (Oat & Yeast-Derived)
FDA-authorized cholesterol claim — strongest evidence
Cholesterol (FDA claim): 3 g/day oat β-glucan. Immune (Wellmune®): 250-500 mg/day yea
Strong
Boswellia Serrata
Osteoarthritis pain and function (Cochrane-level evidence)
Standard dose: 300-1,200 mg/day standardized boswellia extract. Joint applications: 1
Strong
Casperome® (Boswellia Phytosome — Indena)
~3-4× improved boswellic acid bioavailability
250-500 mg/day Casperome® (manufacturer-recommended range). The 500 mg dose was used
Strong
ParActin® (Andrographis Extract — HP Ingredients)
Joint comfort in osteoarthritis
50-100 mg/day ParActin® andrographis extract; PPAR-gamma activation, anti-inflammatory
Moderate
PROMUNEL® (Propolis Immune Extract)
83% symptom reduction in 3 days (URTI trial)
400–800 mg/day propolis extract; PROMUNEL® clinical dose per PLT specifications; immu
Strong
Zinc Acetate
Common Cold Treatment (Cold-Eeze)
13–23 mg elemental zinc per lozenge for cold use (75–100 mg/day total); 50 mg three t
Strong
Zinc Gluconate
Common Cold Symptom Reduction
15–50 mg elemental zinc/day for general supplementation; for cold treatment 13.3–23 m
Moderate
Astragalus (Astragalus membranaceus)
Immune system modulation and enhancement
ROOT: 2-6 g/day dried OR 250-500 mg/day standardized extract. IMMUNE: 500 mg BID. TA-
Moderate
Echinacea
Immune System Support
300–500 mg three times daily (900–1,500 mg/day) during illness; prevention: 300 mg/da
Moderate
Elderberry
Reduced cold and flu duration
600–900 mg extract/day during illness; 150–300 mg/day for prevention
Moderate
Goldenseal (Hydrastis canadensis)
Antimicrobial and immune support
500–1,000 mg/day dried root powder; standardized extract: 250–500 mg/day; typically u
Moderate
ImmuseLC-Plasma (Lactococcus lactis strain Plasma)
Plasmacytoid dendritic cell activation
100 billion (10¹¹) heat-killed L. lactis strain Plasma/day standard RCT dose. Kirin i
Limited
Isenolic® (Olive Polyphenols for Cold/Flu)
Neuraminidase inhibition (anti-influenza mechanism)
Per Pharmactive product specification
Moderate
MSM (Methylsulfonylmethane)
Osteoarthritis pain and function
Standard dose: 1.5-3 g/day, often split as 1 g twice daily. Joint applications: 3-6 g
Moderate
Quercetin
Antioxidant Protection
500-1000 mg/day quercetin; modest URI duration reductions in clinical trials
Moderate
Rosmarinic Acid
Reduced seasonal allergic rhinitis symptoms
ALLERGIC RHINITIS: 50-200 mg/day Perilla × 21 d. AD COGNITION (Noguchi-Shinohara): 50
Moderate
Tinofend® (Tinospora cordifolia for Immune — Verdure)
Allergic rhinitis symptom reduction
Per Verdure Tinofend product specification