Industry-leading immune protection with yeast beta glucan, vitamin C, and zinc to shield against upper respiratory infections during intense training
Highly bioavailable iron with Ferrochel (ferrous bisglycinate) for optimal absorption and energy transport
Endurance-specific performance blend including ginkgo biloba for improved VO2 max and altitude adaptation, green tea extract to convert BCAAs into usable energy, and vitamin K2 MK7 to increase cardiac output
Broad-spectrum antioxidant protection with ORAC-blend vitamins and minerals to support recovery and reduce oxidative stress
Comprehensive daily nutrient support to address the unique nutritional deficits caused by endurance training
Summarized by Shop
You're training hard, but here's what most endurance athletes don't realize: 70% of you are deficient in iron, and those daily training sessions are depleting critical vitamins and minerals faster than your regular diet can replace them. Your body is burning through nutrients at a rate that no amount of "eating clean" can keep up with. Fi
Form
Tablets
Iron Content
18 mg per serving
Vitamin C
100 mg per serving
Vitamin E
100 IU per serving
Vitamin D
600 IU per serving
Vitamin K2
100 mcg per serving
Magnesium
400 mg per serving
Zinc
80 mg per serving
Selenium
55 mcg per serving
Target Gender
Unisex
Age Group
Adults
Summarized by Shop
4.8
57 ratings
5
4
3
2
1
Feeling strong and healthy!
I get all the vitamin I need for endurance training in one place. I feel the difference.
C
Christina · 16 days ago
Great Stuff!
Love it and its continued support of my summer endurance efforts!
M
Matthew · August 20, 2026
Good stuff!
I had been experiencing some mild fatigue and sluggishness on runs and thought perhaps a multivitamin could help by filling in any gaps in my nutrition. After comparing the ingredients and reviews for a few options (SwissRX, Thorne Advanced Nutrients, Thorne Multi-vitamin Elite) I opted for First Endurance MultiV in part because it contains iron. My fatigue went away about a week after starting with this multi. I haven't noticed any dramatic differences in performance or anything, but I do generally have good energy and clear thinking throughout the day. Good enough for me to believe it's doing what I need it to do.