List of drugs: O
List of drugs: O is a comprehensive catalog encompassing a wide range of pharmaceuticals, biologics, and substances used in the treatment, diagnosis, and prevention of diseases and medical conditions. This list includes both generic and brand names of drugs that start with the letter "O." Each entry is linked to detailed articles about the drug's medical uses, pharmacology, side effects, and regulatory status.
Overview[edit]
Drugs and medications are critical components in the treatment and management of diseases. They can range from over-the-counter (OTC) remedies to prescription medications and biologically derived therapies. The drugs listed under the letter "O" include a diverse group of compounds used in various branches of medicine, including oncology, cardiology, neurology, and infectious diseases, among others.
List of Drugs Starting with "O"[edit]
- Omeprazole - A proton pump inhibitor used in the treatment of gastroesophageal reflux disease (GERD) and peptic ulcer disease.
- Ondansetron - An antiemetic commonly used to prevent nausea and vomiting caused by cancer chemotherapy, radiation therapy, and surgery.
- Oxycodone - An opioid analgesic prescribed for moderate to severe pain management.
- Ofloxacin - A fluoroquinolone antibiotic used to treat a variety of bacterial infections.
- Olmesartan - An angiotensin II receptor antagonist used in the management of hypertension.
- Olanzapine - An atypical antipsychotic used for the treatment of schizophrenia and bipolar disorder.
- Oseltamivir - An antiviral medication used in the prevention and treatment of influenza A and B.
- Ocrelizumab - A monoclonal antibody used in the treatment of multiple sclerosis.
- Opdivo (Nivolumab) - A PD-1 inhibitor used in cancer immunotherapy for various types of cancer, including melanoma and non-small cell lung cancer.
- Ozempic (Semaglutide) - A GLP-1 receptor agonist used in the treatment of type 2 diabetes.
Pharmacology[edit]
The pharmacology of drugs starting with "O" encompasses a broad spectrum of mechanisms of action, pharmacokinetics, and pharmacodynamics. For instance, Omeprazole works by irreversibly inhibiting the H+/K+ ATPase in the stomach, reducing gastric acid secretion. On the other hand, Oxycodone exerts its analgesic effects by binding to the mu-opioid receptor, altering the perception of and response to pain.
Regulatory Status[edit]
The regulatory status of drugs can vary significantly across different jurisdictions. Medications like Oseltamivir are widely approved for use in many countries for the treatment of influenza. In contrast, the approval of newer drugs such as Ocrelizumab for multiple sclerosis may be subject to ongoing clinical trials and regulatory review processes.
See Also[edit]
Sponsored Health Resource

W8MD Weight Loss, Sleep & MedSpa
Looking for physician-supervised weight loss, semaglutide, tirzepatide, or GLP-1 receptor agonist options? W8MD helps eligible patients in New York City, Brooklyn, New Jersey, Connecticut, Pennsylvania, Delaware, and greater Philadelphia with medical weight loss, sleep medicine, and long-term maintenance support.
GLP-1 specials: Affordable GLP-1 injections NYC and Philadelphia starting from $29.99/week and up for semaglutide with insurance accepted for qualifying visits, and $45/week and up for tirzepatide with insurance accepted for qualifying visits. Self-pay options start from $59.99/week and up for semaglutide and $69.99/week and up for tirzepatide.
- Medical weight loss NYC
- Affordable GLP-1 injections NYC
- Budget GLP-1 weight loss shots Philadelphia
- New Jersey medical weight loss
- NYC medical weight loss blog
- Philadelphia weight loss blog
- Sleep medicine and sleep apnea services
- W8MD MedSpa and wellness
Book a W8MD appointment · View GLP-1 specials
Paid promotional message. Eligibility, pricing, insurance coverage, medication availability, and results vary. Medical evaluation required.
Medical Disclaimer: WikiMD is for informational purposes only and is not a substitute for professional medical advice. Content may be inaccurate or outdated and should not be used for diagnosis or treatment. Always consult your healthcare provider for medical decisions. Verify information with trusted sources such as CDC.gov and NIH.gov. By using this site, you agree that WikiMD is not liable for any outcomes related to its content. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.
Translate page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian