Meditron is a suite of open-source medical LLMs developed by EPFL. It adapts Llama-2 through continued pretraining on curated medical corpora including PubMed papers, medical guidelines, and general domain data. The 70B model outperforms base Llama-2-70B, GPT-3.5, and Flan-PaLM on medical reasoning tasks. Versions include Meditron-7B and Meditron-70B with 4k token context length.