Understanding the interactions, benefits, and safety of combining these two powerful supplements.
We found no direct interaction between Arginine and Green tea extract in the sources below, but they share a caution.
Both have a note about blood-pressure medicines (see each one below).
What it is: An amino acid the body makes and gets from protein foods. The body turns it into nitric oxide, which widens blood vessels.
What the research says: There's little evidence it improves strength, exercise performance or recovery.
In Holitro: Arginine (500 mg per capsule)
Sources: NIH Office of Dietary Supplements: Dietary Supplements for Exercise and Athletic Performance (updated March 2021); Memorial Sloan Kettering Cancer Center, About Herbs: Arginine (updated February 2022)
What it is: A concentrated extract of green tea leaves, rich in catechins such as EGCG. It contains caffeine.
What the research says: Catechins and caffeine may have a modest effect on weight, and it lowered LDL cholesterol a little. Cancer results are inconsistent.
In Holitro: Green Tea Extract 500mg (500 mg per capsule)
Source: NIH National Center for Complementary and Integrative Health: Green Tea: Usefulness and Safety (updated February 2025)
Check with your doctor or pharmacist, especially if you take medication.
Check your stack — freeEducational information only, not medical advice. This reflects general ingredient overlap, not a personalized safety review. Always check with your doctor or pharmacist before combining supplements, especially if you take medication, are pregnant or nursing, or manage a health condition. These statements have not been evaluated by the FDA.
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