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User submitted reviews
Review by Fred Z
Great product
by Fred Z
Royal Oak, Michigan
1 of 1 customers found this review helpful.
Ive been using Optygen hp for several years. Really helps with my endurance.
Only wish it weren't so high priced!
Fred Z
Detroit Randonnuers member
Reviewed 7/7/2022
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Review by smitty
Great product I feel better with this OptygenH.P.
by smitty
indiana
1 of 2 customers found this review helpful.
I used Optygen before but not the H.P. and feel even better with the H.P. than the other Optygen.
Reviewed 10/22/2020
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