Co-magaldrox Suspension (Maalox, Mucogel)

Co-magaldrox suspension, available under brand names such as

Maalox

and

Mucogel

) is a widely used antacid medication designed to provide rapid relief from symptoms of indigestion, heartburn, and gastro-oesophageal reflux disease (GORD). This combination product contains

aluminium hydroxide

and

magnesium hydroxide

, which work synergistically to neutralize excess stomach acid and protect the stomach lining from irritation.

Understanding how to use Co-magaldrox effectively is crucial for managing upper gastrointestinal discomfort safely. This article covers its composition, indications, dosage guidelines, potential side effects, precautions, drug interactions, and specific considerations for special populations including pregnant women and perioperative patients. Always consult a healthcare professional before starting any new medication.

About Co-magaldrox Suspension

Co-magaldrox is formulated as an oral suspension, typically mint-flavored and sugar-free, making it suitable for a broad range of patients. Each 5ml dose generally contains approximately 200mg aluminium hydroxide and 175mg magnesium hydroxide, though exact strengths may vary by brand. The aluminium component acts slowly to neutralize acid, while magnesium hydroxide provides faster action, resulting in an onset of relief within about

15 minutes

that lasts

2-4 hours

.

This balanced formulation helps maintain neutral pH in the stomach without significantly affecting bowel function, unlike single-agent antacids that may cause constipation (aluminium) or diarrhoea (magnesium) predominantly. It is particularly valued for its low sodium content, ideal for patients with conditions like gestational hypertension or pre-eclampsia.

Key Facts

• Composition: Aluminium hydroxide (slow-acting) + Magnesium hydroxide (fast-acting).
• Brands: Maalox Plus for anti-foaming).
• Form: Oral suspension, sugar-free, low-sodium, mint-flavoured.
• Onset: 15 minutes; Duration: 2-4 hours.
• Legal Status: General Sales List (GSL) in many regions; midwife-supplyable for pregnancy-related use.

What is Co-magaldrox Used For?

Co-magaldrox is indicated for the symptomatic relief of:

• **Dyspepsia** (indigestion).
• **Heartburn**.
• **Gastro-oesophageal reflux disease (GORD)** symptoms.
• **Wind/flatulence** (in formulations like Maalox Plus with simeticone).

It neutralizes excess gastric acid, coats and protects the stomach mucosa, and alleviates discomfort from acid irritation. In pregnancy, it is a first-line choice for heartburn unresponsive to lifestyle measures due to its safety profile.

Dosage and Administration

The standard adult dose is

10-20ml

(2-4 teaspoons) taken orally

after meals

and

at bedtime

, or as needed for symptom relief. Shake the bottle well before use. Do not exceed

80ml per day

unless advised by a doctor.

Patient Group	Recommended Dose	Frequency
Adults	10-20ml	After meals and bedtime; max 80ml/day
Children over 12 years	5-10ml	As advised; consult doctor
Pregnant women	20ml	As per local guidelines, throughout pregnancy
Perioperative	Omit while fasting; restart post-op	N/A

For optimal efficacy, take between other medications by at least 2 hours to avoid interactions.

Cautions

Use with caution or avoid in:

• Severe renal impairment: Risk of aluminium/magnesium accumulation.
• Hypophosphataemia: Aluminium may exacerbate low phosphate levels.
• Labour: Risk of aspiration if particulate antacid.

Always check allergies, medical history, and current medications before use. Document consultations in patient records.

Perioperative Considerations

In surgical settings, Co-magaldrox requires specific management to prevent complications.

Issues for Surgery

Omitting doses during fasting may lead to loss of relief from dyspepsia or GORD. Combination products like Kolanticon or Maalox Plus should also be omitted.

Advice in Perioperative Period

• Elective/Emergency Surgery: Omit whilst fasting.
• High Aspiration Risk: (e.g., pregnancy, obesity) Consider pre-op acid suppression (oral/IV).
• Post-Operative: Restart when required; caution in renal impairment or with effervescent meds.
• Anti-Reflux Surgery/Gastrectomy: Review ongoing need post-procedure.

Interactions

Co-magaldrox can impair absorption of many drugs by altering pH or forming complexes. Separate administration by

2-3 hours

.

Key Interactions

• Antimicrobials: Quinolones (ciprofloxacin), tetracyclines (doxycycline) – separate doses.
• Iron Preparations: Especially important in obstetrics; 2+ hours apart.
• Corticosteroids: Separate large doses by 2-3 hours.
• Enteral Feeds: Risk of bezoar formation and tube blockage.
• Others: ACE inhibitors, antifungals, digoxin, levothyroxine, etc. – consult BNF.
• Anaesthetics: None reported.

Antacids may damage enteric coatings.

Side Effects

Generally well-tolerated, but possible effects include:

• Common: Constipation (aluminium), diarrhoea (magnesium).
• Uncommon: Stomach pain, bloating, nausea, dry mouth.
• Rare: Hypermagnesaemia (prolonged use), ileus (bowel obstruction).

Report serious reactions via MHRA Yellow Card Scheme.

Pregnancy and Breastfeeding

Safe throughout pregnancy for heartburn; low sodium suits hypertensive conditions. No effects on labour/neonate/breastfeeding reported. Monitor for interactions with iron.

Overdose

Unlikely to be serious; may cause hypermagnesaemia, dehydration. Seek immediate medical help; contact Poisons Centre if needed.

Patient Advice

• Shake well before use.
• Avoid other drugs within 2 hours.
• Contact GP/midwife if symptoms persist.
• Store as per instructions; provide PIL.

Frequently Asked Questions (FAQs)

Q: How quickly does Co-magaldrox work?

A: Onset is typically within 15 minutes, lasting 2-4 hours.

Q: Can I take it during pregnancy?

A: Yes, it’s suitable for heartburn unresponsive to lifestyle changes; low sodium and sugar-free.

Q: Does it interact with antibiotics?

A: Yes, separate quinolones/tetracyclines by 2+ hours to ensure absorption.

Q: Is it safe before surgery?

A: Omit during fasting; restart post-op. High-risk patients may need alternatives.

Q: What if I have kidney problems?

A: Use cautiously or avoid; risk of accumulation.

Monitoring and Follow-Up

Monitor symptom response; switch antacids if inadequate. Refer if symptoms worsen.