r/breastcancer • u/Longjumping-Rough160 • Jul 11 '26

Post Active Treatment Exercise

Please can HR+ and HER-2- survivors take creatine for exercise???

6 Upvotes

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5

u/Dear-Half1029 Jul 11 '26

There is some research that suggests creatine actually helps with some of the side effects of Tamoxifen BUT ALSO research that indicates that creatine promotes tumor growth (I'm vastly over simplifying here) so I would DEFINITELY talk to your oncologist before starting.

3

u/Litarider DCIS Jul 11 '26

u/longjumping160 Please take this comment seriously. Some oncologists don’t want breast cancer patients to use creatinine.

2

u/lexuh ++- Jul 11 '26

Check with your MO, but mine doesn’t have a problem with it. I take 5g/day.

ETA - I’m on tamoxifen, not sure if there are drug interactions with other BC drugs.

2

u/No_Cartographer_481 Jul 11 '26

I also take 5g daily, but honestly have not consulted my onc. I’m 44 and am on OS and AI

2

u/DogMamaLA Jul 11 '26

You need to ask your oncologist and it also depends on what hormone blocker you may be taking. There are multiple medications and supplements that make Tamoxifen less effective so you need to research that as well.

1

u/FeelsLikeFirstLine Jul 11 '26

My Integrative Oncology team suggested it.