If this is the drug that Valieva takes,
https://rupharma.com/hypoxen/#product-additional-info , this is something that would never be sold over the counter in the US. It is not recognized by the FDA, nor can it be found via the National Library of Medicine application. However, it is primarily used in the study below, as an adjunct treatment of congestive heart failure.
Then overlay TMZ, then she is taking a potentially powerful cocktail whose interactions with Hypoxene are unknown. There's no way an elite athlete has that condition. This gets more shocking by the minute. I've attached the findings from The National Library of Medicine as to the clinical trials done for TMZ and some of the studies suggest some pretty detrimental impacts.
clinicaltrials.gov
[Editor's note: The retirement date of ChemIDplus and Drug Information Portal was added.][Editor's note: Read "A Quick Reference to NLM's Drug and Chemical Resources".][Editor's note: Updates about the ChemID dataset was added to the end of the article.]On December 12, 2022, PubChem will serve...
druginfo.nlm.nih.gov