Last update
5/2/2025

Overview

SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 118 Reviews
8.2
Supplement Facts
Serving Size:  3 Tablets
Amount Per Serving
%DV
Calories
5
Total Carbohydrate
2 g
< 1%†
Vitamin A (as 80% retinyl acetate and 20% beta carotene)
1,500 mcg
167%
Vitamin C (ascorbic acid)
1,000 mg
1,111%
Vitamin D (as ergocalciferol)
10 mcg
50%
Zinc (as zinc bisglycinate)
15 mg
136%
Selenium (as L-selenomethionine)
25 mcg
45%
Systemic Immunity BlendEchinacea purpurea (stem, leaf, flower), Astragalus (root), Olive (leaf)
455 mg
**
Circulatory BlendGarlic (bulb), Cayenne Pepper (fruit)
350 mg
**
Cellular Immunity BlendIP-6 (Inositol Hexaphosphate) (from Calcium Magnesium Phytate), Maitake (Grifola frondosa) Mycelial & Primordia Biomass, Reishi (Ganoderma lucidum) Mycelial & Primordia Biomass, Shiitake (Lentinula edodes) Mycelial & Primordia Biomass, Yamabushitake (Hericium erinaceus) Mycelial & Primordia Biomass
315 mg
**
Digestive BlendArabinogalactan (from Larix laricina), Oregon Grape (Mahonia aquifolium) (root and stem), Goldenseal (Hydrastis canadensis) (aerial parts), Fructooligosaccharides
290 mg
**
Respiratory BlendFenugreek (seed), Horehound (herb), Thyme (leaf), Elecampane (root)
240 mg
**
Eleuthero (root)
65 mg
**
Guggul Extract (gum resin)
65 mg
**
Rosemary (leaf)
65 mg
**
Gotu Kola (stem, leaf)
50 mg
**
Plantain (leaf)
20 mg
**

Most Useful Reviews

9
Effective against colds
97 people found this helpful
Quick and effective. Update July 2021: it has now been THREE YEARS since I've been unwell. While I no longer take this regularly, at the first sign of feeling off, I take it immediately, and it clears up within a day or less. Update March 2020: I've continued with these and have remained cold and flu-free. A sinus infection hit me hard in July, and though I was on antibiotics, after taking two of these tablets, I felt much better the next day. Within two days, everything was gone. I'm a believer! I plan to take it daily to prevent fall and winter colds.
Read More
9
Highly recommended product
72 people found this helpful
We recommend this to everyone! My husband and I have been using this for several years with excellent results. Our son, who suffered from constant colds after having mono in college, hasn't been unwell since we sent him this immune supplement. Both my husband and I have also avoided getting sick. After a brief stop of the supplement due to new medications, I started sneezing again, but returning to six pills a day cleared it up within a day. We recommend this product highly.
Read More
8.5
Reduces sickness frequency
44 people found this helpful
Most vital item in my medicine cabinet. Throughout my life, I’ve been prone to colds and the flu. After starting these two years ago, I rarely get ill. When I start feeling unwell, I take three in the morning and at night. I've noticed a significant difference by the next day, often bypassing sickness completely. I've been the only one at work who hasn’t contracted the flu this season, likely due to taking these consistently.
Read More

User Reviews

USERS' SCORE
Good
Based on 118 Reviews
8.2
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Effective against colds
97 people found this helpful
Quick and effective. Update July 2021: it has now been THREE YEARS since I've been unwell. While I no longer take this regularly, at the first sign of feeling off, I take it immediately, and it clears up within a day or less. Update March 2020: I've continued with these and have remained cold and flu-free. A sinus infection hit me hard in July, and though I was on antibiotics, after taking two of these tablets, I felt much better the next day. Within two days, everything was gone. I'm a believer! I plan to take it daily to prevent fall and winter colds.
Read More
9
Highly recommended product
72 people found this helpful
We recommend this to everyone! My husband and I have been using this for several years with excellent results. Our son, who suffered from constant colds after having mono in college, hasn't been unwell since we sent him this immune supplement. Both my husband and I have also avoided getting sick. After a brief stop of the supplement due to new medications, I started sneezing again, but returning to six pills a day cleared it up within a day. We recommend this product highly.
Read More
8.5
Reduces sickness frequency
44 people found this helpful
Most vital item in my medicine cabinet. Throughout my life, I’ve been prone to colds and the flu. After starting these two years ago, I rarely get ill. When I start feeling unwell, I take three in the morning and at night. I've noticed a significant difference by the next day, often bypassing sickness completely. I've been the only one at work who hasn’t contracted the flu this season, likely due to taking these consistently.
Read More
7.5
Blessing for immunity
43 people found this helpful
This is a godsend! With Lupus and being on peritoneal dialysis, my immune system is compromised, making me prone to colds which linger for weeks. A few years ago, a health food store owner recommended SystemWell, and it has truly been a blessing! During flu season, I take one daily and increase to six if I feel symptoms coming on. This product does wonders for me, and I always keep it stocked.
Read More
9
Most effective vitamin
27 people found this helpful
Most effective vitamin I've ever taken. I began taking these vitamins in January 2013 and can confidently say they are the most effective I've ever encountered. Previously, I suffered from frequent colds and flus. Since using Nature's Way SystemWell Ultimate Immunity, I haven't fallen ill in 2013! After forgetting to take them for a few days, I took an intensive dose and felt better the next morning. I’ve been consistent ever since. The tablets are large but cutting them helps; don't let the size deter you from trying these remarkable vitamins.
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Frequently Asked Questions

10
Cold does not eventuate
2 people found this helpful
Miracle Tablets! These tablets are incredible, and I cannot recommend them highly enough. As soon as I feel rundown and suspect a cold is brewing, I take three tablets morning and night for a day or two. Consequently, the cold doesn’t develop, and I am back to good health swiftly. 110% recommend!
9
Cold relief
Great product! For prevention and during the cold season, Ultimate Immunity always saves the day. As soon as I feel unwell, I take the pill, and the cold quickly dissipates! It's essential to take it immediately; it’s not meant to be held in the mouth!
9
Cold protection
9 people found this helpful
I've been taking this additive for two months, and I've noticed a significant difference. During a period when many at work were sick, I remained free of any signs of a cold, which surprised me. I even shared it with my boss, who recovered quickly from severe illness after starting it.
9
Cold prevention
24 people found this helpful
This product powerfully helps to prevent viral infections like colds. I typically take it daily as a precaution, but I increase to two capsules three times a day as soon as I feel a cold coming on, and it clears up quickly. I also enjoy the Echinacea liquid extract, which has a pleasant absence of strong smells compared to tablets.
8
Prevents winter sniffles
1 people found this helpful
System Well, Ultimate Immunity, is a great product for the winter months. I start with three tablets daily and reduce to one after that. It prevents winter colds, and if I catch a sniffle, I return to three daily; the sniffle vanishes in a few days.
9
Normalcy restored quickly
3 people found this helpful
GREAT STUFF! Nature's Way is one of my favourite brands. I love System Well; as they say, if I feel anything approaching (illness), I take it. I seem to be back to normal in a day or two, and I also take two daily for maintenance. No cold for two years.
9
Resolves symptoms promptly
1 people found this helpful
I love this product; it assists during virus outbreaks. I always carry a few capsules in my bag for interaction with sick individuals or when I have cold symptoms. At the onset of symptoms, I take three tablets at once, negating the need for separate vitamin C, zinc, and other supplements since they’re all included. I’ve used this product long-term and witness results every time.
9
Reduces cold susceptibility
1 people found this helpful
I won't be without this product. I discovered it three years ago when I frequently caught colds. After taking it for a while, I noticed I wasn’t as susceptible. I have my family on this as well and absolutely swear by it. The ingredients are great, and although it has a noticeable herbal smell, nothing works as effectively as this for helping my family. I cannot imagine being without it, and iHerb has the best prices.
9
Cold prevention success
1 people found this helpful
I bought this supplement for seasonal cold prevention. We take one each morning. When my son began to show early signs of a cold after school, I increased my intake to two three times a day, and after a couple of days, his cold was gone. I've ordered another jar for my daughter.
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