Llama-3[8B] Meditron V1.0 is an 8 billion parameter large language model (LLM) designed specifically for the biomedical field, fine-tuned within 24 hours after the release of Llama-3 by Meta. The model exceeds all existing open models at the same parameter level in standard benchmarks such as MedQA and MedMCQA, and approaches the performance of the leading open model in the medical field with 70 billion parameters, Llama-2[70B]-Meditron. This work demonstrates the innovative potential of open foundational models and is part of a broader initiative to ensure fair access to this technology in resource-poor areas.