
Medicine overview
Indications of Entacyd
Established Uses
Entacyd is an antacid used for the relief of heartburn, acid indigestion, sour stomach, and upset stomach caused by excess stomach acid. This is symptomatic relief only; Entacyd does not treat the underlying cause of these symptoms.
Additional / Adjunctive Uses
Entacyd is also commonly used, generally on a doctor's advice, to help relieve the discomfort of hyperacidity, gastritis, dyspepsia, and as a symptomatic adjunct alongside other treatment for peptic ulcer disease. In this adjunctive role, Entacyd eases acid-related discomfort but is not a treatment for the ulcer itself.
Composition
Aluminium Hydroxide + Magnesium Hydroxide is available in more than one strength and dosage form. Commonly marketed presentations include: chewable tablets containing Aluminium Hydroxide 250 mg and Magnesium Hydroxide 400 mg per tablet; and oral suspensions containing Aluminium Hydroxide (as aluminium oxide) 175 mg with Magnesium Hydroxide 225 mg per 5 mL, or Aluminium Hydroxide 200 mg with Magnesium Hydroxide 200 mg per 5 mL, depending on the brand. Always check the exact strength stated on the specific product label, since strengths vary by brand and formulation.
Description
Entacyd is a combination antacid that is widely used for quick, short-term relief of heartburn, acid indigestion, and an upset or sour stomach. It works directly in the stomach to neutralize excess acid rather than being absorbed into the bloodstream to act elsewhere in the body. The two ingredients are combined because aluminium hydroxide tends to be constipating while magnesium hydroxide tends to loosen stools, so together they offer more balanced bowel effects than either ingredient used alone. Entacyd is available as chewable tablets and as an oral suspension, and is intended for occasional or short-term use rather than for treating the underlying disease causing the symptoms.
Therapeutic Class
Pharmacology
Aluminium Hydroxide + Magnesium Hydroxide acts mainly through local, non-systemic action within the gastrointestinal tract rather than through absorption into the body. Both components react chemically with hydrochloric acid in the stomach to neutralize it, raising intragastric pH and thereby relieving acid-related discomfort and reducing pepsin activity. Aluminium hydroxide has a relatively slow but sustained neutralizing action and may form a soothing coating over irritated mucosa, while magnesium hydroxide neutralizes acid more rapidly. Only small amounts of aluminium and magnesium are absorbed systemically under normal use in people with normal kidney function; unabsorbed drug is eliminated in the stool, while any absorbed aluminium and magnesium are eliminated mainly by the kidneys. Because elimination depends on renal function, people with impaired kidney function can accumulate aluminium and magnesium with prolonged use (see Precautions and Warnings).
Dosage & Administration of Entacyd
The dosing of Entacyd is determined by a healthcare professional or by the instructions on the specific product label, and it is not the same for every indication, every formulation, or every age group. The general dosing patterns below reflect common labeled and prescribed use; always follow the directions given by a doctor, pharmacist, or the product packaging.
Administration of Entacyd
- Shake the oral suspension well before each use to ensure an even dose.
- Chewable tablets should be chewed thoroughly before swallowing, not swallowed whole.
- Take Entacyd with a glass of water, typically 1 to 3 hours after meals and at bedtime, or as directed by a doctor or the product label.
- Separate Entacyd from other oral medicines by the interval noted for that specific medicine (see Drug Interactions), since taking them together can reduce absorption of the other drug.
- Do not use the maximum labeled dose for more than 2 weeks without medical advice, and stop use and see a doctor if symptoms persist or worsen.
Interaction of Entacyd
- Tetracycline antibiotics (e.g., tetracycline, doxycycline): Aluminium and magnesium ions chelate with tetracyclines to form poorly absorbed complexes, reducing antibiotic levels. Separate dosing by at least 2 to 4 hours.
- Fluoroquinolone antibiotics (e.g., ciprofloxacin): chelation by aluminium and magnesium cations can reduce fluoroquinolone absorption substantially. Take the fluoroquinolone about 2 hours before, or 4 to 6 hours after, Entacyd.
- Oral iron supplements: raised gastric pH and complex formation reduce iron absorption. Separate dosing by at least 2 hours.
- Azole antifungals (e.g., ketoconazole, itraconazole): these drugs need an acidic stomach environment to dissolve and be absorbed; the antacid effect of Entacyd can reduce their absorption. Separate dosing by at least 2 hours.
- Levothyroxine (thyroid hormone): can be adsorbed or complexed by aluminium/magnesium, reducing absorption. Separate dosing by at least 2 hours, or as advised by a doctor.
- Digoxin: absorption and bioavailability may be altered. Separate dosing by at least 2 hours and monitor as advised by a doctor.
- Gabapentin: absorption can be reduced. Take gabapentin at least 2 hours after Entacyd.
- Bisphosphonates (e.g., alendronate): absorption is markedly reduced by concurrent antacid use; avoid taking together and separate by several hours as directed by a doctor or pharmacist.
- Because Entacyd can reduce the absorption of a number of other oral medicines through chelation or by raising gastric pH, always tell a doctor or pharmacist about all other medicines being taken so that appropriate spacing can be advised.
Contraindications
Aluminium Hydroxide + Magnesium Hydroxide is contraindicated in:
- Known hypersensitivity to aluminium hydroxide, magnesium hydroxide, or any excipient of the specific product.
- Complete or suspected intestinal obstruction.
- Severe abdominal pain of unknown cause, or symptoms suggestive of appendicitis or another acute abdominal condition, since antacid use can mask symptoms of a serious underlying problem.
Side Effects of Entacyd
Common Side Effects
Constipation (more associated with the aluminium component), diarrhea or loose stools (more associated with the magnesium component), mild stomach cramps, and chalky taste. Effects on bowel habit are usually mild and dose-related.
Serious Side Effects — Seek Medical Attention
Seek medical attention if any of the following occur: signs of an allergic reaction (rash, itching, swelling of the face/lips/tongue, difficulty breathing); persistent or severe constipation or diarrhea; signs of electrolyte disturbance such as unusual tiredness, muscle weakness, irregular heartbeat, or confusion, particularly with prolonged or excessive use or in people with kidney disease (see Precautions and Warnings); or symptoms that persist beyond 2 weeks of use.
Pregnancy & Lactation
Pregnancy
Entacyd does not have a formal pregnancy risk category assigned. Controlled human data are limited, but antacids such as Entacyd are commonly used for heartburn in pregnancy when non-drug measures are insufficient. As a precaution, some experts recommend avoiding routine use in the first trimester, and pregnant women should use Entacyd only after discussing it with a doctor, who can weigh the expected benefit against any potential risk.
Breastfeeding
Magnesium hydroxide is known to pass into breast milk in small amounts; data on aluminium hydroxide in breast milk are limited. Entacyd is generally considered acceptable to use while breastfeeding, but a doctor should be consulted before use, and the nursing infant should be watched for any unusual stooling pattern.
Precautions & Warnings
- Kidney disease / renal impairment: aluminium and magnesium are cleared mainly by the kidneys, so people with reduced kidney function, and those on dialysis, can accumulate these minerals with prolonged or high-dose use, raising the risk of toxicity (including, rarely, aluminium-related bone or neurological effects). A doctor should be consulted before use in anyone with known kidney disease, and prolonged use should be avoided in this group unless a doctor advises otherwise.
- Magnesium-restricted diet: ask a doctor before use, since Entacyd adds to magnesium intake.
- Duration and dose limits: do not use the maximum labeled dose for more than 2 weeks, or exceed the maximum daily dose on the label, unless directed by a doctor, as excessive or prolonged use raises the risk of electrolyte disturbance and bowel changes.
- Other medicines: Entacyd can reduce the absorption of a number of other oral drugs; see Drug Interactions for the full list and recommended spacing.
- Persistent or worsening symptoms: stop use and see a doctor if heartburn or stomach symptoms persist beyond 2 weeks, or if they are accompanied by unexplained weight loss, difficulty swallowing, vomiting blood, or black/tarry stools, as these may indicate a condition needing separate evaluation.
Overdose Effects of Entacyd
The most likely effects of taking more than the recommended amount of Entacyd are gastrointestinal — diarrhea or, alternately, constipation, abdominal bloating, and cramping. With substantial or prolonged excessive intake, electrolyte disturbances can occur, including elevated magnesium levels (more likely in people with reduced kidney function), which may cause symptoms such as low blood pressure, muscle weakness, drowsiness, or an irregular heartbeat, and, rarely, aluminium accumulation with long-term excessive use. Do not induce vomiting unless specifically directed to do so by a doctor or poison control center. If an overdose of Entacyd is suspected, contact a doctor, the nearest hospital emergency department, or a poison control center promptly.
Storage Conditions
Store Entacyd according to the instructions on the specific product's label, as recommended conditions can vary by brand and formulation (tablet versus suspension). Unless the label states otherwise, store in a cool, dry place below 30°C, protected from direct light and moisture, and keep out of the reach of children. Do not use beyond the expiry date printed on the pack.
Use In Special Populations
- Children: not intended for self-directed use under 12 years of age; a physician should be consulted (see Pediatric Use).
- Elderly: no specific dose adjustment is established for otherwise healthy older adults, but elderly patients are more likely to have reduced kidney function, so the renal-impairment caution below applies particularly to this group; use should be guided by a doctor for regular or prolonged use.
- Renal impairment: see Precautions and Warnings for details on the risk of aluminium and magnesium accumulation with prolonged or high-dose use in people with kidney disease.
- Hepatic impairment: Entacyd is not metabolized by the liver in a way that requires a specific dose adjustment in liver disease; nonetheless, use should follow a doctor's advice in anyone with significant hepatic impairment.
- Pregnancy and breastfeeding: see Pregnancy and Lactation.
- Magnesium-restricted diets or hypermagnesemia risk: a doctor should be consulted before use.
Duration Of Treatment
Entacyd is generally intended for short-term or as-needed relief of occasional heartburn, acid indigestion, and upset stomach. Self-directed use at the maximum labeled dose should not continue for more than 2 weeks unless a doctor has advised otherwise. When Entacyd is used as an adjunct alongside treatment for gastritis or peptic ulcer disease, the duration is set by the treating doctor based on the underlying condition. If symptoms persist, recur frequently, or worsen despite use, a doctor should be seen to check for an underlying condition that may need separate treatment.
Drug Classes
Mode Of Action
Aluminium hydroxide reacts with hydrochloric acid in the stomach to form aluminium chloride and water, while magnesium hydroxide reacts with hydrochloric acid to form magnesium chloride and water; both reactions neutralize gastric acid and raise intragastric pH, which in turn reduces the activity of pepsin. Aluminium hydroxide has a slower, more sustained neutralizing action and tends to have a constipating effect on the bowel, whereas magnesium hydroxide neutralizes acid more quickly and tends to have a laxative effect; combining the two in Aluminium Hydroxide + Magnesium Hydroxide is intended to balance these opposing bowel effects while providing effective acid neutralization.
Pediatric Uses
Entacyd is not recommended for self-directed (non-prescribed) use in children under 12 years of age; a physician should be consulted first to confirm the diagnosis and appropriateness of use. Under direct medical supervision, reduced doses have been described for older children (for example, some clinical guidance describes half a chewable tablet given up to three times daily in children over 5 years for gastritis-related stomach pain), but such use is uncommon and should only be started and monitored by a doctor. Use of Entacyd in infants and children under 5 years has not been established and is not recommended without specific medical guidance.
Frequently Asked Questions
What is Entacyd 200 ml Syrup used for?
Entacyd 200 ml Syrup is an antacid used for the relief of heartburn, acid indigestion, sour stomach, and upset stomach caused by excess stomach acid, and is sometimes used, on a doctor's advice, for symptomatic relief in hyperacidity, gastritis, and dyspepsia. It relieves symptoms rather than treating the underlying condition.
How is Entacyd 200 ml Syrup taken?
Entacyd 200 ml Syrup is usually taken 1 to 3 hours after meals and at bedtime, or as needed for symptom relief, following the dose on the specific product's label or a doctor's instructions. The suspension should be shaken well before use, and chewable tablets should be chewed thoroughly before swallowing. See Dosage and Administration for indication-specific regimens.
What is the correct dose of Entacyd 200 ml Syrup?
The dose depends on the formulation, brand, and reason for use, and should follow the product label or a doctor's directions rather than a single fixed amount. General labeled dosing and use are summarized in the Dosage table above; the maximum labeled dose should not be used for more than 2 weeks without medical advice.
Can Entacyd 200 ml Syrup be taken with other medicines?
Entacyd 200 ml Syrup can reduce the absorption of several other oral medicines, including tetracycline and fluoroquinolone antibiotics, iron supplements, azole antifungals, levothyroxine, digoxin, gabapentin, and bisphosphonates. These should generally be taken at least 2 hours apart from Entacyd 200 ml Syrup, with longer intervals for some drugs (see Drug Interactions). Always tell a doctor or pharmacist about all other medicines being used.
Can Entacyd 200 ml Syrup be taken with milk?
There is no specific safety concern reported about taking Entacyd 200 ml Syrup with milk itself, but milk and other dairy products can, like the antacid, alter stomach pH and are best not relied on as a substitute for the product's directed dosing. If in doubt about combining Entacyd 200 ml Syrup with milk or other foods, ask a doctor or pharmacist.
Is Entacyd 200 ml Syrup safe during pregnancy?
Entacyd 200 ml Syrup does not have a formal pregnancy risk category, but antacids of this type are commonly used for heartburn in pregnancy. Some experts advise avoiding routine use in the first trimester, so pregnant women should check with a doctor before using Entacyd 200 ml Syrup. See Pregnancy and Lactation for details.
Can children take Entacyd 200 ml Syrup?
Entacyd 200 ml Syrup is not recommended for self-directed use in children under 12 years; a physician should be consulted first. In some cases, a doctor may direct reduced doses in older children for specific conditions, but this should always be medically supervised. See Pediatric Use for details.
What are the side effects of Entacyd 200 ml Syrup?
The most common effects of Entacyd 200 ml Syrup are constipation and diarrhea, since the two ingredients have opposite effects on bowel habit, along with occasional mild stomach cramps. Serious effects are uncommon but can include allergic reactions or electrolyte disturbances, particularly with prolonged or excessive use or in people with kidney disease. See Side Effects for the full list.
What should be done if a dose of Entacyd 200 ml Syrup is taken in excess?
Taking more than the recommended amount of Entacyd 200 ml Syrup most commonly causes diarrhea, constipation, or abdominal discomfort; larger or prolonged excess intake can cause electrolyte disturbances, especially in people with kidney problems. Do not induce vomiting unless told to by a doctor or poison control center, and seek medical help or contact a poison control center if an overdose of Entacyd 200 ml Syrup is suspected.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.