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Drug Safety
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Safety Issues

Drug Safety

The U.S. Food and Drug Administration (FDA) rigorously evaluates and monitors medications to ensure they meet safety and effectiveness standards before and after they reach the market.

The FDA Approval Process

Before any drug can be sold in the United States, it must be approved by the U.S. Food and Drug Administration (FDA). This is true whether it's a prescription or an over-the-counter drug. The FDA evaluates both the effectiveness and safety of a drug by looking at:

  • How animal testing and human clinical trials affect the condition the drug is treating
  • If any side effects occur
  • How it's manufactured
  • What the labeling says

Post-Approval Monitoring

The FDA also monitors a drug's safety after approval. Health care providers and patients can report drug side effects through the FDA's MedWatch website.

Personal Drug Safety

For you, drug safety means buying online only from licensed pharmacies located in the United States. It also means knowing how to take your medicines correctly.

Frequently Asked Questions

If you remember within a few hours, take the missed dose. If it’s almost time for the next dose, skip the missed one and resume your regular schedule. Never double‑dose; if you’re unsure, call your pharmacist for guidance.
Stop the medication only if instructed by your provider, then contact your prescriber or pharmacist right away. Report the reaction to the FDA’s MedWatch program (www.fda.gov/medwatch) to help track safety signals for other patients.
Yes—focus on the “Dosage and Administration,” “Warnings and Precautions,” “Drug Interactions,” and “Adverse Reactions” sections. These contain critical information about how to take the drug safely, what to avoid, and signs that require medical attention.
Check that the website requires a valid prescription, displays a U.S. physical address, and is verified by the National Association of Boards of Pharmacy (look for the VIPPS seal). You can also search the pharmacy in the FDA’s “BeSafeRx” database or call your state pharmacy board to confirm its license.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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