a patient taking an inh should watch for signs and report what side effects?

by Betty Cruickshank DDS 8 min read

Inh Oral: Uses, Side Effects, Interactions, Pictures, …

28 hours ago Isoniazid may interact with foods containing tyramine/ histamine (such as cheese, red wine, certain types of fish). This interaction may cause increased blood pressure, flushing of the skin ... >> Go To The Portal


More common Clumsiness or unsteadiness dark urine loss of appetite nausea or vomiting numbness, tingling, burning, or pain in hands and feet

Full Answer

What are the side effects of INH tablet?

How to use Inh Tablet. Isoniazid may interact with foods containing tyramine/ histamine (such as cheese, red wine, certain types of fish). This interaction may cause increased blood pressure, flushing of the skin, headache, dizziness, or fast/pounding heartbeat. Tell your doctor right away if any of these symptoms occur.

How do I know if I need to check for side effects?

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Dark urine and yellowing of the eyes or skin (signs of liver problems) are more likely to occur in patients over 50 years of age.

Do patients have to report adverse events?

Patients have no legal requirement to report adverse events, but healthcare providers and medical manufacturers are subject to mandatory reporting requirements. Medical product reports are submitted through the MedWatch Voluntary Reporting Form , and clinical vaccine reports go through the Vaccine Adverse Event Reporting System (VAERS).

Are adverse symptoms always associated with a particular drug or device?

While adverse symptoms are typically associated with a particular drug or medical device, they may not necessarily be caused by the drug/device.

What is a common side effect of INH therapy?

Common side effects may include: numbness, tingling, or burning pain in your hands or feet; nausea, vomiting, upset stomach; or. abnormal liver function tests.

What should be monitored when taking isoniazid?

For persons 35 and older, in addition to monthly symptom reviews, hepatic enzymes (specifically, AST and ALT [formerly SGOT and SGPT, respectively]) should be measured prior to starting isoniazid therapy and periodically throughout treatment.

What is INH toxicity?

The ingestion of toxic amounts of isoniazid causes recurrent seizures, profound metabolic acidosis, coma and even death. In adults, toxicity can occur with the acute ingestion of as little as 1.5 g of isoniazid. Doses larger than 30 mg per kg often produce seizures.

What is the most common adverse effect of tuberculosis drugs?

The main side effects are stomach upsets and discomfort, nausea and loss of appetite. Vomiting and diarrhoea may occur although this is rare. Mild flushing, itchiness, skin and a pale rash are often brief side effects, and are not reasons to stop your TB treatment.

What are the contraindications of isoniazid?

Isoniazid is contraindicated in patients who develop severe hypersensitivity reactions, including drug -induced hepatitis; previous isoniazid-associated hepatic injury; severe adverse reactions to isoniazid such as drug fever, chills, arthritis; and acute liver disease of any etiology.

Does isoniazid cause high blood pressure?

Isoniazid may interact with foods containing tyramine/histamine (such as cheese, red wine, certain types of fish). This interaction may cause increased blood pressure, flushing of the skin, headache, dizziness, or fast/pounding heartbeat.

How does INH cause metabolic acidosis?

Anion gap metabolic acidosis is a known consequence of INH overdose. By substituting for NAD in the Krebs cycle, chronic INH ingestion does lead to very mild elevations in lactic, beta-hydroxybutyric, and acetoacetic acids. However, the contribution of this mechanism to metabolic acidosis is minimal.

Why does INH cause peripheral neuropathy?

Second, INH inhibits the enzyme pyridoxine phosphokinase; this enzyme is necessary to activate pyridoxine to pyridoxal 5' phosphate, the cofactor in many "pyridoxine-dependent" reactions. Functional pyridoxine deficiency is the likely mechanism of INH-induced peripheral neuropathy.

How does isoniazid cause hepatotoxicity?

Chronic INH hepatotoxicity results in the induction of hepatocyte apoptosis, with associated disruption of mitochondrial membrane potential and DNA strand breaks. The most likely biochemical mechanism is that the metabolism of INH produces reactive metabolites that bind and damage cellular macromolecules in the liver.

Which of the following signs or symptoms is specific to tuberculosis?

Active TB . Signs and symptoms of active TB include: Coughing for three or more weeks. Coughing up blood or mucus. Chest pain, or pain with breathing or coughing.

Before Taking This Medicine

You should not use isoniazid if you are allergic to it, or if you have: 1. active liver disease; 2. a history of severe allergic reaction to isonia...

How Should I Take Isoniazid?

Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.Take isonia...

What Happens If I Miss A Dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to...

What Happens If I Overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.Overdose symptoms may include vomiting, severe dizziness or drowsin...

What Should I Avoid While Taking Isoniazid?

Avoid drinking alcohol. It may increase your risk of liver damage while you are taking isoniazid.You may need to avoid certain foods while you are...

What Other Drugs Will Affect Isoniazid?

Many drugs can interact with isoniazid. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible...

What are the factors that influence the symptoms of a medical product?

Especially when the general population uses medical products, a number of variables can influence the symptoms experienced after using them, such as lifestyle, diet, other medical conditions, and environmental factors. Some patients may face unintended side effects simply as a result of underlying conditions. ...

What to do if you don't see side effects on a drug label?

Not sure which side effects to report? Go ahead and check the safety information and label of the drug or device you suspect. If your symptom doesn't appear anywhere on the label, definitely make a report. If your symptom is on the label, it's still important to notify the FDA.

What is an adverse event?

An adverse event occurs when a patient encounters any undesirable experience associated with the use of a drug or medical device. They range from unconcerning to life-threatening, and they can even include events like changing the color of a person's urine. If you learned about allergies to specific antibiotics as a child, ...

What is the condition called when you have impaired kidney function?

But patients with impaired kidney function can develop a rare but serious condition known as gadolinium deposition disease (GDD), a fact that came to light only after the drug was used in the general population.

What is FDA safety?

According the the United States Food and Drug Administration (FDA), all drug and device safety information is thoroughly vetted before a product gains approval. Unfortunately, even well-designed clinical studies can miss problems, meaning that some issues emerge only after a product has been released for public use. As such, it is important for all consumers to understand what constitutes an adverse event, how they are monitored, and how everyone can help protect public health by reporting the negative effects of drugs and medical devices.

Is it important to notify the FDA of side effects?

If your symptom is on the label, it's still important to notify the FDA. Sometimes side effect frequency is underestimated in clinical trials. This kind of report can help both regulators and manufacturers update labeling information to more accurately represent side effect probability.

Can you report adverse events on Essure?

If women had known they could voluntarily report their negative experiences with the Essure implantable birth control device from the outset, it may have been pulled from the market much earlier and prevented countless injuries. Remember, adverse event reporting helps keep us all safe, and it's really easy to do.

How do you know if you have isoniazid?

Symptoms may include: skin rash, fever, swollen glands, flu-like symptoms, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes. This reaction may occur several weeks after you began using isoniazid. Call your doctor at once if you have:

What is isoniazid used for?

Isoniazid is an antibiotic that fights bacteria. Isoniazid is used to treat and to prevent tuberculosis (TB). You may need to take other TB medicines in combination with isoniazid. When treating active TB, isoniazid must be used with other TB medicines.

Can Isoniazid be used for a viral infection?

Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Isoniazid will not treat a viral infection such as the flu or a common cold.

Does isoniazid cause hives?

Isoniazid side effects. Get emergency medical help if you have signs of an allergic reaction ( hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning in your eyes, skin pain, red or purple skin rash that spreads and causes blistering and peeling).

Does isoniazid cause side effects?

Side effects requiring immediate medical attention. Along with its needed effects, is oniazid may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Does isoniazid increase the risk of hepatitis?

The risk for hepatitis increases with advancing age, concomitant alcohol use, chronic liver disease, and injection drug use. Patients given isoniazid should be carefully monitored and interviewed at monthly intervals.

Does isoniazid need medical attention?

Side effects not requiring immediate medical attention. Some side effects of isoniazid may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine.

Can isoniazid cause hepatitis?

Severe and sometimes fatal hepatitis has been reported with is oniazid therapy and may occur even after many months of treatment. The risk for hepatitis increases with advancing age, concomitant alcohol use, chronic liver disease, and injection drug use. Patients given isoniazid should be carefully monitored and interviewed at monthly intervals. For persons 35 and older, in addition to monthly symptom reviews, hepatic enzymes (specifically, AST and ALT (formerly SGOT and SGPT, respectively) should be measured prior to starting isoniazid therapy and periodically throughout treatment. An increased risk of fatal hepatitis associated with isoniazid has been reported in women, particularly black and Hispanic women. The risk may also be increased during the post partum period. More careful monitoring should be considered in these groups, possibly including more frequent laboratory monitoring.