OTC · No prescriptionAntacid / Anti-ulcer (symptomatic relief)

Alka Shot Syrup — Side Effects & Warnings

Known side effects of Alka Shot Syrup include Nausea, constipation, diarrhoea, stomach cramps, belching, bloating. Not everyone experiences these side effects.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated June 2026

Common Side Effects

Nausea
constipation
diarrhoea
stomach cramps
belching
bloating

This is not an exhaustive list. Consult your doctor if you notice any unusual symptoms.

Important Warnings

Use with caution in kidney disease, heart failure, hypertension, or patients on sodium-restricted diets (some antacids contain sodium). Prolonged or excessive use may cause electrolyte imbalance or rebound acidity. Seek medical advice if symptoms persist beyond 7 days, if you have severe abdominal pain, vomiting blood, black stools, or unintended weight loss. Not a substitute for evaluation of chronic GERD/ulcer disease.

Drug Interactions

Alka Shot Syrup may interact with the following:

May reduce absorption of tetracyclines
fluoroquinolones
iron salts
levothyroxine
digoxin; separate by 2–4 hours. If it contains aluminium/magnesium
caution with other magnesium/aluminium products; if it contains sodium bicarbonate/citrate
caution with drugs affected by urine pH.

Always tell your doctor about all medicines you are taking, including over-the-counter drugs and supplements.

Pregnancy Safety

Consult doctor

Alcohol Interaction

Use with caution

Habit Forming

Storage

Store below 25°C in a cool, dry place away from direct light. Keep the bottle tightly closed. Do not freeze. Keep out of reach of children.

Alka Shot Syrup — Safety Summary

Composition: Potassium Citrate (1100mg/5ml) + Magnesium Citrate (375mg/5ml) + Vitamin B6 (20mg/5ml)
Prescription: Not required (OTC)
Pregnancy: Consult doctor
Alcohol: Use with caution
Habit forming: No

Alka Shot Syrup — Safety FAQs

What should I do if I experience side effects?

Mild side effects often resolve on their own. If side effects are severe or persistent, stop the medicine and consult your doctor immediately.

Are all listed side effects common?

No. Some side effects are common while others are rare. Not everyone experiences side effects. Consult your doctor if you are concerned.

Can I take this medicine with other drugs?

Some medicines interact with each other. Always inform your doctor about all medicines you are currently taking.

When should I seek emergency help?

Seek immediate medical attention if you experience severe allergic reactions (difficulty breathing, swelling of face/throat), chest pain, or any life-threatening symptoms.

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Safety disclaimer

This information is for educational purposes only and is not a substitute for professional medical advice. If you experience severe side effects, seek medical attention immediately.