- Cannabidiol shows “surprisingly effective” antibiotic activity against Gram-positive strains (e.g., Staphylococcus aureus, Streptococcus pneumoniae), according to findings presented at the ASM Microbe 2019 meeting.
- The authors say that it is a “promising new antibiotic.”
- These results are from in vitro studies, but the researchers point to existing evidence of cannabidiol’s safety in humans.
Why this matters
- Infections by these strains are responsible for millions of infections each year and thousands of deaths.
- Resistance has created an urgent need to identify new antibiotics.
- Cannabidiol showed activity even against highly resistant strains, including those resistant to vancomycin and daptomycin.
- It also could disrupt biofilms.
- It had no effect against Gram-negative strains.
- The authors say it showed low propensity to induce resistance.
- The authors used a series of standard antimicrobial tests to assess the antibiotic power of cannabidiol.
- Funding: Botanix; Innovation Connections (Australian government).
- In vitro findings presented without peer review at a conference.