Short answer

We found no documented interaction between Boron and Glycine in the sources below. That isn't proof the combination is right for you: check each one's cautions, and ask your pharmacist if you take medication.

Boron

What it is: A trace mineral found in many foods. It isn't considered essential because no clear role in the body has been identified.

What the research says: It may play a part in bone health, calcium use and steroid hormones, but this isn't proven.

Cautions

• Adults shouldn't exceed 20 mg a day.
• Most boron poisonings come from swallowing boric acid or borax products, not food or supplements.

Medicines to check

• No clinically relevant medicine interactions are known

In Holitro: Boron (10 mg per capsule)

Source: NIH Office of Dietary Supplements: Boron: Fact Sheet for Health Professionals (updated June 2022)

Glycine

What it is: An amino acid the body makes; it's a building block of creatine, glutathione and collagen.

What the research says: Some studies suggest it may improve sleep quality and recovery, but reviews say more good human trials are needed.

Cautions

• No major safety concerns are reported at supplement doses; human research is limited.

Medicines to check

• Talk to your clinician if you take any medicine

In Holitro: Glycine (850 mg per capsule)

Sources: PubMed review: An Update of the Promise of Glycine Supplementation (Sports, 2024) (updated September 2024); PubMed review: Multifarious Beneficial Effect of Glycine: A Review (2017) (updated March 2017)

Check with your doctor or pharmacist, especially if you take medication.

Check your stack — free

Educational 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.