Competact 15/850 mg
A comprehensive guide to Competact, a combination drug used to treat type 2 diabetes.
Quick Facts
What is Competact and what is it used for?
Competact is a combination drug in a single tablet, containing two active ingredients: “pioglitazone” and “metformin.” This medication is used to treat type 2 diabetes in adults. The drug works through two complementary mechanisms to improve control over blood sugar levels.
- Metformin: Reduces glucose production in the liver, decreases its absorption from the intestines, and improves the body’s response to insulin.
- Pioglitazone: Increases the sensitivity of the body’s cells (especially muscle and fat cells) to insulin, helping them use glucose more effectively.
This medication is usually prescribed for patients who have not achieved adequate blood sugar control using metformin alone. It should be used as part of a treatment plan that includes diet and exercise.
How to Use and Dosage
You must follow your doctor’s instructions carefully when taking Competact tablets. The usual dose is one tablet twice daily, and it is essential to take it with food to reduce the gastrointestinal side effects of metformin.
- Usual Dose: One tablet twice daily.
- Time of Administration: The tablet should be taken with or immediately after meals (such as breakfast and dinner).
- How to Swallow: Swallow the tablet whole with a glass of water. Do not crush or chew it.
Your doctor will regularly monitor your blood sugar levels and kidney function to determine if the dose is appropriate for you. Do not stop taking the medication without consulting your doctor.
Potential Side Effects
Like all medicines, Competact can cause side effects, some of which are common and others rare but serious. It is important to know these symptoms and contact your doctor immediately if any worrying signs appear.
- Common Symptoms: Nausea, diarrhea, abdominal pain, loss of appetite (due to metformin), and slight weight gain and swelling (due to pioglitazone).
- Serious Symptoms (Metformin): Symptoms of lactic acidosis such as severe muscle pain, difficulty breathing, cold limbs, and severe fatigue.
- Serious Symptoms (Pioglitazone): Signs of heart failure such as shortness of breath, rapid weight gain, and swelling of the legs.
You should stop taking the medication and seek emergency medical help if you experience any of the serious symptoms listed above.
Important Warnings and Precautions
Competact carries important warnings related to both of its components. You must inform your doctor of your full medical history before starting treatment.
- Lactic Acidosis: Metformin may cause a rare but serious condition called lactic acidosis. The risk increases in patients with kidney or liver disease, and with alcohol consumption.
- Heart Failure: Pioglitazone can cause fluid retention, which may lead to or worsen heart failure.
- Kidney and Liver Disease: The drug is contraindicated in cases of severe impairment of kidney or liver function.
- Surgery and Contrast Dye Scans: The medication must be temporarily stopped before undergoing surgery or an X-ray examination that requires a dye injection.
This medicine is contraindicated during pregnancy or breastfeeding. Alcohol should be avoided during treatment.
Frequently Asked Questions (FAQ)
1. Why are pioglitazone and metformin combined in one tablet?
These two drugs are combined because they treat type 2 diabetes in different but complementary ways. Metformin reduces glucose production in the liver, while pioglitazone increases the sensitivity of body cells to insulin. This dual action leads to better control of blood sugar levels compared to using either one alone.
Additionally, having them in a single tablet makes it easier for the patient to adhere to the treatment, as it reduces the number of tablets to be taken daily, improving long-term treatment outcomes.
2. Does Competact cause weight gain?
Yes, weight gain is a known side effect of pioglitazone. This gain is mainly due to fluid retention in the body and may be accompanied by swelling in the legs or ankles. On the other hand, metformin may cause slight weight loss or be weight-neutral.
If you notice rapid and unexplained weight gain, especially if it is accompanied by shortness of breath, you should inform your doctor immediately, as it could be a sign of worsening heart failure. It is important to follow a diet and exercise plan to manage weight.
3. What is lactic acidosis and what are its symptoms?
Lactic acidosis is a very rare but life-threatening side effect associated with metformin. It occurs when lactic acid builds up dangerously in the blood. The risk is significantly higher in patients with severe kidney or liver problems, acute heart failure, or with excessive alcohol consumption.
Its symptoms include severe and unexplained muscle pain, difficulty breathing, abdominal pain, a feeling of coldness in the limbs, and extreme fatigue. This is a medical emergency that requires immediate discontinuation of the drug and going to the hospital.
4. Should I be concerned about the risk of heart failure?
You should be aware of this risk, especially if you have a history of heart problems. Pioglitazone can cause fluid retention, which increases the burden on the heart and may worsen existing heart failure or cause it in some patients. This drug is usually not prescribed for patients with severe heart failure.
You should monitor for any signs of heart failure, such as rapid weight gain, swelling of the feet and ankles, or shortness of breath, especially when lying down or exerting yourself. Inform your doctor immediately if any of these symptoms appear.
5. Why should Competact be taken with food?
It is recommended to take Competact with or immediately after meals to reduce the gastrointestinal side effects of metformin. Metformin can cause bothersome symptoms such as nausea, diarrhea, abdominal pain, and loss of appetite, especially at the beginning of treatment. Taking the drug with food helps to significantly alleviate these symptoms.
This practice makes the treatment more tolerable and helps patients adhere to it. These side effects usually decrease as the body gets used to the medication, but continuing to take it with food remains a good habit.
6. Can I drink alcohol while on Competact treatment?
Excessive alcohol consumption should be avoided during treatment with Competact. Alcohol can significantly increase the risk of metformin-associated lactic acidosis, a rare but serious side effect. Alcohol can also affect blood sugar levels, potentially causing an unexpected drop or spike.
If you drink alcohol, it is important to be honest with your doctor about it. Your doctor will provide the most appropriate advice for your situation, but the general rule is extreme moderation or complete avoidance to ensure your safety.
7. How long does it take for Competact to start working?
Metformin starts working relatively quickly, within a few days, but pioglitazone takes longer to show its full effect. It may take several weeks (from 4 to 12 weeks) to notice the full impact of the drug on blood sugar levels and the HbA1c index.
For this reason, it is important to be patient and continue taking the medication regularly as prescribed. Your doctor will evaluate your response to treatment after a sufficient period through blood tests.
8. What should I do if I need surgery?
If you are planning to have surgery, or even a scan that requires an intravenous contrast dye injection, you must inform your doctor that you are taking Competact. You will usually be asked to temporarily stop taking the medication a few days before and after the procedure.
The reason is that these procedures can temporarily affect kidney function, increasing the risk of lactic acidosis from metformin. Your doctor will tell you exactly when to stop and when you can safely resume taking the medication.
9. Can Competact cause low blood sugar?
When used alone, Competact rarely causes low blood sugar (hypoglycemia). Its components work primarily by reducing insulin resistance and glucose production, rather than stimulating the secretion of large amounts of insulin.
However, the risk of hypoglycemia increases significantly if Competact is taken with other diabetes medications, especially insulin or sulfonylureas (like glimepiride). It is important to be aware of the symptoms of low blood sugar and how to manage them if you are taking these medications together.
10. Does Competact affect the kidneys?
The drug itself does not directly harm healthy kidneys. However, metformin is cleared by the kidneys. If your kidney function is impaired, metformin can build up in your body, significantly increasing the risk of lactic acidosis.
For this reason, Competact is contraindicated for patients with severe renal impairment. Your doctor will regularly check your kidney function (usually at least once a year) to ensure they are working well and that the medication remains safe for you.
Disclaimer and Information Sources
- Content Purpose: The information in this guide is for awareness and educational purposes only and is not a substitute for professional medical advice. Do not use this or any other medication without consulting your doctor or pharmacist.
- Source of Information: This content was prepared based on official, documented medical sources appropriate for the topic (such as official drug leaflets, health ministry guidelines, FDA directives, or specialized medical organizations).
- Publication Date | Last Updated: September 21, 2025
Dr. Ahmad Baker, PharmD
Senior Pharmacist & Health Educator
With over 23 years of clinical experience in hospital and community pharmacy across Egypt and Saudi Arabia, Dr. Ahmad specializes in reproductive health and pharmaceutical safety. He is dedicated to providing evidence-based guidance to empower patients in the MENA region.
Medical Disclaimer: This content is for educational purposes and reflects the latest pharmaceutical protocols. It is not a substitute for personal medical advice. Always consult Dr. Ahmad Baker or your healthcare provider before starting any treatment.