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R.B.Pharmaceuticals - Tablet - 10 S
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Vitamin E (10mg) + L-Carnitine L-Tartrate (200mg) + Magnesium Aspartate (250mg) + Magnesium Chloride (150mg)
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Crampster Tablet is used for nutritional supplement used to help prevent/treat magnesium deficiency and support muscle function; adjunct for muscle cramps/spasms, fatigue and weakness related to low magnesium; supportive therapy for energy metabolism and antioxidant support.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated October 2026
Crampster Tablet contains Vitamin E (10mg) + L-Carnitine L-Tartrate (200mg) + Magnesium Aspartate (250mg) + Magnesium Chloride (150mg). It belongs to the Mineral supplement (magnesium salts) + antioxidant (vitamin E) + metabolic agent (L-carnitine) class of medicines.
Nutritional supplement used to help prevent/treat magnesium deficiency and support muscle function; adjunct for muscle cramps/spasms, fatigue and weakness related to low magnesium; supportive therapy for energy metabolism and antioxidant support.
Magnesium (as aspartate and chloride) replenishes body magnesium stores and supports normal neuromuscular transmission, which may reduce muscle cramps due to deficiency. L-carnitine supports transport of fatty acids into mitochondria for energy production, helping reduce fatigue. Vitamin E acts as an antioxidant, helping protect cells from oxidative stress.
Tablet for oral use. Take as directed by the physician; commonly taken once daily after food with water. Do not exceed the recommended dose; if stomach upset occurs, take with meals.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.
An overdose of this medicine can cause vomiting, stomach pain and, with some minerals, damage over the longer term. It may cause stomach upset and, with prolonged excess, puts avoidable load on the kidneys. It can cause vomiting and stomach pain, and with iron can be dangerous, especially in children. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of Crampster are mild and settle as the body gets used to the medicine. The ones reported most often are:
Stop the medicine and get help at once for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
Not for treatment of acute severe cramps without medical evaluation. Use with caution in kidney disease or reduced urine output due to risk of magnesium accumulation (may cause weakness, low blood pressure, slow heartbeat). Consult a doctor if pregnant/breastfeeding, if you have heart rhythm disorders, myasthenia gravis, or persistent diarrhea. Stop and seek medical advice if rash, severe diarrhea, or signs of high magnesium (severe weakness, confusion, breathing difficulty) occur.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for people with inherited disorders of amino-acid metabolism, or with a known allergy to the protein source.
Tetracyclines (e.g., doxycycline), quinolones (e.g., ciprofloxacin/levofloxacin), bisphosphonates (e.g., alendronate), levothyroxine—magnesium can reduce absorption; separate by 2–4 hours. Diuretics (loop/thiazide), PPIs—may affect magnesium levels. CNS depressants or antihypertensives—high magnesium may enhance hypotension/sedation in rare cases.
Store below 25°C in a cool, dry place. Protect from moisture and direct light. Keep out of reach of children.
People taking Crampster are often asked to check these from time to time. Your doctor decides which and how often.

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Compiled from the manufacturer's prescribing information and the sources below, and reviewed by a registered pharmacist. It does not replace your own doctor's advice.