Yes, plastic packer bottles are widely considered safe for storing medicines and supplements, especially when made from pharmaceutical-grade materials like HDPE (High-Density Polyethylene) or PET (Polyethylene Terephthalate). These plastics are FDA-approved, non-reactive, and resistant to moisture, making them ideal for protecting the integrity of pills, capsules, and powders. Additionally, many packer bottles include features like child-resistant caps and tamper-evident seals to enhance safety. For maximum protection and compliance, always verify that the bottles meet industry standards and are labeled BPA-free and food-safe.