购买前最常见的疑问——我们在这里一一解答。The most common questions before purchasing — answered here.
支持 PayPal、Visa、Mastercard、American Express 及 Apple Pay。所有支付均通过加密安全通道处理，我们不存储你的信用卡信息。We accept PayPal, Visa, Mastercard, American Express, and Apple Pay. All payments are processed through encrypted, secure channels. We never store your credit card information.
支付完成后，系统通常在 5 分钟内自动发送含下载链接的确认邮件。如未收到，请检查垃圾邮件文件夹，或联系我们的客服。After payment, our system typically sends a confirmation email with your download link within 5 minutes. If you don't receive it, please check your spam folder or contact our support team.
完全适合。所有电子书均以普通读者为目标，用清晰的语言解释医学概念。所有专业术语都有简单解释，无需医学知识背景。Absolutely. All e-books are written for general audiences with clear, plain-language explanations of medical concepts. No prior medical knowledge required.
目前自有品牌实物产品配送范围请以下单时实际可选地区为准。美国境内通常 3-7 个工作日，国际配送 7-21 个工作日。电子书为即时下载，无需配送。Please refer to available shipping regions during checkout for our own-brand physical products. US delivery is typically 3-7 business days; international 7-21 business days. E-books are instant downloads — no shipping needed.
自有品牌产品直接在本站销售。精选推荐是经过验证的第三方产品，点击后跳转第三方平台购买，含联盟链接（我们可能获得少量佣金，不影响推荐立场）。所有推荐页面均有明确披露。Own-brand products are sold directly on our site. Expert Picks are vetted third-party products — clicking takes you to a third-party retailer via affiliate links (we may earn a small commission, which never influences our recommendations). All recommendation pages include clear disclosure.
绝对不可以。本网站所有内容仅供健康参考和教育用途，不构成医疗建议、诊断或治疗方案。请在专业医疗人员指导下做出任何健康决定。我们的目标是帮你带着更好的问题与更清晰的理解，与医生进行更有质量的对话。Absolutely not. All content on this site is for informational and educational purposes only — not medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions. Our goal is to help you ask better questions and have more informed conversations with your doctor.
任何食品补剂都可能与特定人群的健康状况或药物产生相互作用。孕妇、哺乳期女性、正在服用处方药或有慢性病的人，使用前必须咨询医疗专业人员。产品详情页有详细的适用人群和注意事项说明。Any dietary supplement may interact with certain health conditions or medications. Pregnant or nursing women, those taking prescription medications, or those with chronic conditions must consult a healthcare professional before use. Each product page contains detailed usage notes and contraindications.
自有品牌实物产品提供 30 天退款保障（未拆封）。如产品存在质量问题，请在收货后 14 天内联系我们，附照片说明，我们将优先处理。电子书因数字产品特性，购买后不支持退款，但可联系我们获得等值替换。Own-brand physical products have a 30-day return policy (unopened). For quality issues, contact us within 14 days of receipt with photos and we'll prioritize your case. E-books, as digital products, are non-refundable after download, but contact us for equivalent exchanges.