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Related Concept Videos

Drug Delivery: Enteral Route01:18

Drug Delivery: Enteral Route

The enteral drug administration involves three primary routes: oral, sublingual, and buccal. Oral ingestion is the most prevalent, safe, economical, and convenient method for drug administration. However, it has certain drawbacks, including limited absorption due to the drug's low water solubility or poor membrane permeability, possible emesis from GI mucosa irritation, destruction of drugs by digestive enzymes or low gastric pH, and irregular absorption along with food or other drugs.
Drugs in...
Pharmaceutical Poisoning: Treatment Strategies01:26

Pharmaceutical Poisoning: Treatment Strategies

Treatment strategies for poisoning are a critical aspect of emergency medicine, focusing on preventing the absorption of toxins and enhancing their elimination. When a poisoning incident occurs, the first response is to halt exposure and decontaminate the patient, particularly through gastrointestinal (GI) methods if the poison was ingested.Gastrointestinal Decontamination Techniques:Activated charcoal is the cornerstone of GI decontamination. It works through adsorption, binding the toxin to...
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates,  such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow. Administered...
Acute Coronary Syndrome V: Nursing Management01:26

Acute Coronary Syndrome V: Nursing Management

Nursing Assessment:Nursing management of acute coronary syndrome (ACS) involves taking the patient's history, focusing on primary complaints such as chest pain, dyspnea, and excessive sweating (diaphoresis), as well as other symptoms like back or jaw pain, nausea, vomiting, palpitations, dizziness, and fatigue. The nurse also reviews the patient's history of cardiac events, risk factors such as hypertension, diabetes, smoking, family history, and current medications.In the objective assessment,...
Antianginal Drugs: Calcium Channel Blockers and Ranolazine01:25

Antianginal Drugs: Calcium Channel Blockers and Ranolazine

Angina pectoris, a primary symptom of ischemic heart disease, requires careful pharmacological interventions. In this context, calcium channel blockers (CCBs) and ranolazine have emerged as crucial pharmacotherapeutic agents, providing deep insights into the complexities of angina management.
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Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...

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Related Experiment Video

Updated: Jun 3, 2026

Preparation of Naringenin Solution for In Vivo Application
08:18

Preparation of Naringenin Solution for In Vivo Application

Published on: August 10, 2021

A case for immediate-release niacin.

Mayer Bassan1

  • 1mayer_bassan@yahoo.co.uk

Heart & Lung : the Journal of Critical Care
|March 19, 2011
PubMed
Summary
This summary is machine-generated.

Immediate-release niacin effectively raises high-density lipoprotein (HDL) and is safer than slow-release forms. This case highlights potential liver toxicity with slow-release niacin, emphasizing proper drug use.

Related Experiment Videos

Last Updated: Jun 3, 2026

Preparation of Naringenin Solution for In Vivo Application
08:18

Preparation of Naringenin Solution for In Vivo Application

Published on: August 10, 2021

Area of Science:

  • Cardiovascular Pharmacology
  • Hepatology

Background:

  • Niacin is a lipid-modifying agent used to increase high-density lipoprotein (HDL) cholesterol.
  • It is particularly beneficial for patients with ischemic heart disease or those at high risk.
  • Niacin can also reduce low-density lipoprotein (LDL) in patients on statin therapy, potentially reducing morbidity and mortality.

Observation:

  • Crystalline, immediate-release niacin is most effective for raising HDL and generally well-tolerated regarding liver function.
  • A case study details a patient with a positive response to 3g/day of immediate-release niacin.
  • The same patient later developed clinical hepatitis after switching to an equivalent dose of slow-release niacin.

Findings:

  • Immediate-release niacin demonstrates superior HDL-raising efficacy and a better hepatic safety profile compared to slow-release formulations.
  • Slow-release niacin carries a risk of hepatotoxicity, even at therapeutic doses.

Implications:

  • Niacin should be recognized as a prescription drug, not a dietary supplement, requiring careful medical supervision.
  • Immediate-release niacin is recommended for lipid management, particularly for its HDL-elevating effects.
  • Clinicians should initiate niacin therapy cautiously, starting with 2g/day and providing close patient monitoring and support to mitigate risks.