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Which Product is Best for Me; Optygen or OptygenHP?

Which Product is Best for Me; Optygen or OptygenHP?

We often get asked how these two products differ and why one would choose OPTYGENHP over OPTYGEN. The following document will help explain the differences so consumers can decide which product best suits them. Before we get into these details lets first see if this...
Optygen at 19,000 feet!

Optygen at 19,000 feet!

‘I’ve been using Optygen from First Endurance for at least 5 or 6 years for bike racing. I looked at the ingredients and thought that it might work well for my mountain guiding at very high elevations. I guided 3 groups up Kilimanjaro last summer and the...