Sisu
Sisu Immunity Bundle
Three proven immune supporters working together for year-round protection
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Why Choose This Product
RESPIRATORY SUPPORT
NAC 600mg helps relieve chronic bronchitis symptoms and supports your respiratory system against illness and infection.
IMMUNE DEFENSE
Ester-C provides 24-hour vitamin C levels in your body while being gentle on your digestive system unlike regular vitamin C.
BONE IMMUNITY
Vitamin D 1000 IU supports both immune function and calcium absorption for strong bones and teeth.
Is This Right For Me?
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How It Works
How It Works
This bundle targets immune support from three angles: NAC supports respiratory health and helps your immune system fight infections, Ester-C maintains immune function with extended vitamin C levels, and Vitamin D supports both immune response and calcium absorption. Together, they provide comprehensive immune support your body can actually use.
Who It's For
Adults who want complete immune support without buying separate products. Perfect for those with busy lifestyles who need respiratory support, especially during cold season or high-stress periods.
Who It's Not For
Not suitable if you're already taking high-dose vitamin C or vitamin D supplements separately.
About This Product
What It Does
Three research-backed immune supporters in one complete bundle. Unlike single-ingredient products, this combination targets immune health from multiple pathways. Your body gets respiratory support, antioxidant protection, and immune-supporting vitamin D in proven amounts.
Why It Works
- RESPIRATORY PROTECTION: NAC 600mg supports your immune system's ability to fight colds and flu, reducing both length and severity of symptoms.
- 24-HOUR VITAMIN C: Ester-C stays in your body longer than regular vitamin C and won't upset your stomach like ascorbic acid can.
- IMMUNE FOUNDATION: Vitamin D 1000 IU provides essential immune support while helping your body absorb calcium for strong bones.
What's Inside
Three separate Sisu products: Vitamin D 1000 IU (400 tablets), NAC 600mg (120 capsules), and Ester-C 1000mg with bioflavonoids (120 tablets). Contains no dairy, wheat, gluten, soy, or peanuts across all products.
Why we carry it: Sisu chose three immune ingredients that actually complement each other's mechanisms, not just popular supplements thrown together.
How to Take
Full Ingredients
Vitamin D 1000 IU
| Servings Size: 1 Tablet | |
| Servings Per Container: 400 | |
| Amount per Serving | |
| Vitamin D (Vitamin D3) equivalent to 1,000 IU of vitamin D (cholecalciferol) activity | 25 mcg |
| Non-medicinal ingredients: isomalt, croscarmellose sodium, microcrystalline cellulose, magnesium stearate (vegetable), calcium silicate | |
| Contains no wheat, dairy or peanuts. | |
NAC 600 mg
| Servings Size: 1 VegCaps | |
| Servings Per Container: 120 | |
| Amount per Serving | |
| N-acetyl-L-cysteine (NAC) | 600 mg |
| Non-medicinal ingredients: Magnesium stearate (vegetable), silicon dioxide, maltodextrin, hypromellose (vegetarian capsule) | |
| Contains no dairy, peanuts, or tree nuts. | |
Ester C 1000 mg
| Servings Size: 1 Tablet | |
| Servings Per Container: 120 | |
| Amount per Serving | |
| Vitamin C (calcium ascorbate*) | 1,000 mg |
| Calcium (calcium ascorbate*) | 125 mg |
| *from Ester-C brand calcium ascorbate | |
| Citrus bioflavonoids | 200 mg |
| (fruit/fruit peel of lemon Citrus limon, orange Citrus sinensis, mandarin orange Citrus reticulata, grapefruit Citrus paradisi, fruit peel of lim Citrus aurantiifolia | |
| Acerola (malpighia glabra, fruit) | 25 mg |
| 4:1 extract, QCE 100 mg | |
| Rose Hip (Rose canina , fruit) | 25 mg |
| Rutin (Dimorphandra mollis, fruit) | 25 mg |
| Non-medicinal ingredients: quercetin (100 mg), microcrystalline cellulose, magnesium stearate (vegetable), stearic acid (vegetable), silicon dioxide, croscarmellose sodium, maltodextrin, acacia, calcium carbonate. | |
| Coating: hypromellose, vegetable glycerin. | |
| Contains no dairy, wheat, gluten, soy or peanuts. | |
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Questions & Answers
Research & Science
Explore the dropdown below to view peer-reviewed literature related to Sisu Immunity Bundle
