Rimstar Tablet: Uses, Dosage, Side Effects, Precautions and Alternates

Quick overview

Rimstar Tablet is a fixed-dose combination of rifampicin, isoniazid, pyrazinamide, and ethambutol used to treat active tuberculosis during the first, intensive two-month phase of a complete six-month TB treatment course. It works by attacking TB bacteria in several different ways at once, helping to kill the bacteria and clear the infection. It must be taken exactly as prescribed, under a doctor's supervision, to prevent the infection from returning or becoming drug-resistant.

What is Rimstar Tablet

Rimstar is a combination tablet that brings together four medicines used to treat tuberculosis (TB): rifampicin, isoniazid, pyrazinamide, and ethambutol. It is used during the first, intensive phase of TB treatment and must only be taken under a doctor's supervision.

Rimstar Tablet uses

• Treatment of active tuberculosis (TB) of the lungs and other body parts, during the initial 2-month intensive treatment phase, as part of a complete 6-month course

Benefits of Rimstar Tablet

• Kills and stops the growth of the bacteria that cause tuberculosis, helping to cure the infection when taken for the full prescribed course

How Rimstar Tablet works

Rimstar combines four medicines that attack TB bacteria in different ways. Isoniazid stops the bacteria from building their protective outer covering. Rifampicin blocks an enzyme the bacteria need to make proteins and multiply. Ethambutol and pyrazinamide slow the bacteria's growth. Together, these four actions kill the bacteria and clear the infection.

Rimstar Tablet dosage

Take the full dose at one time, once daily, preferably on an empty stomach, at least 1 hour before or 2 hours after a meal, since food can reduce how well the medicine is absorbed. Swallow the tablet whole with a full glass of water; do not chew, crush, or break it. Take the medicine at the same time each day to help it work best. Avoid eating foods high in tyramine, such as aged cheese, smoked fish, cured meats, and some beers, while taking this medicine.

Complete the full course exactly as your doctor prescribes; do not stop, skip doses, extend treatment, or share this medicine with others, even if you start feeling better, because stopping early can cause the infection to come back or become harder to treat. This medicine is often given under direct supervision by a health worker to make sure doses are not missed. Children and elderly patients may need special formulations or monitoring, and dosing is decided by the treating doctor based on body weight and age.

Available forms and strengths

• Tablet (film-coated)

Side effects of Rimstar Tablet

Common

• Loss of appetite, nausea, vomiting, abdominal discomfort
• Orange-red discoloration of urine, sweat, tears, and saliva
• Joint pain
• Headache, dizziness
• Rash
• Fever
• Increased sputum, sweating, and watery eyes

Serious

• Liver problems including hepatitis and jaundice
• Peripheral neuropathy (numbness, tingling, or burning in hands and feet)
• Visual disturbances including blurred vision, reduced visual acuity, and color vision changes (especially red-green color blindness)
• Severe skin reactions such as Stevens-Johnson syndrome, toxic epidermal necrolysis, DRESS, and acute generalised exanthematous pustulosis
• Severe hepatic failure, thrombocytopenia, hemolytic anemia, acute kidney injury
• Gout or joint pain from raised uric acid
• Allergic reactions such as rash, itching, swelling, or shortness of breath

Warnings and precautions

• This medicine can cause serious liver damage. Tell your doctor right away if you notice yellowing of the skin or eyes, dark urine, ongoing nausea or vomiting, unusual tiredness, or stomach pain.
• One of the ingredients (ethambutol) can cause eye damage that may become permanent if not caught early. Your eyesight and color vision should be checked before and during treatment, and any changes in vision must be reported right away so the medicine can be stopped promptly if needed.
• Serious and sometimes life-threatening skin reactions have been reported with this medicine. Watch for unusual skin rash or blistering and seek medical help immediately if this happens. If you have had a serious skin reaction before to this medicine, it should never be restarted.
• It's important to take this medicine exactly as prescribed and complete the full course. Stopping early, skipping doses, or sharing the medicine with others can cause treatment to fail and can lead to TB that is resistant to drugs and much harder to treat.
• This medicine can reduce the effectiveness of hormonal birth control (pills, implants, and similar methods). Use an additional non-hormonal method of contraception while taking this medicine.
• Untreated TB is more dangerous to mother and baby than treatment, so Rimstar is usually continued in pregnancy under close medical supervision, with vitamin B6 often given alongside it. It should only be used if the doctor judges the benefits outweigh the risks, and you should not start or stop it during pregnancy without medical advice.
• Breastfeeding is generally considered safe to continue while taking this medicine, and treatment should not be delayed because of breastfeeding, but your doctor should be consulted and the infant should be monitored.
• This medicine should be used carefully in people with moderate kidney problems and is not recommended for those with severe kidney impairment, since some of the drug components can build up and cause more side effects.
• This medicine should be used with caution and close medical supervision in people with liver problems, and should not be used in those with severe liver disease or a history of drug-induced hepatitis.
• Avoid alcohol while taking this medicine, as it increases the risk of liver damage.
• This medicine can cause confusion, dizziness, hallucinations, or vision problems that may affect your ability to drive or use machines safely.

Storage

• Store at room temperature (below 30°C), away from light and moisture
• Keep out of reach of children
• Do not store above 25°C; store in the original package to protect from moisture (blister packs)
• Keep containers tightly closed to protect from moisture

When to see a doctor

Get emergency medical help right away if you think you or someone else has taken too much of this medicine. Signs of overdose can include severe nausea and vomiting, dizziness, vision changes, seizures, confusion, or skin and urine discoloration. Do not try to treat an overdose at home.

Seek medical help immediately if you notice any allergic reaction such as rash, itching, swelling, or difficulty breathing.

Tell your doctor right away if your TB symptoms seem to get worse after initially improving, such as new cough, fever, tiredness, breathlessness, headache, loss of appetite, or weight loss, as this needs prompt evaluation.

Alternatives

• Rimcure
• Rimactazid
• Akurit-4