jonacal tablet - Calcium (1250mg) + Vitamin D3 (250IU) medicine

Jonacal Tablet: Complete Guide to Calcium and Vitamin D3 Supplement

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🏭 Jonas Pharmaceuticals Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 26, 2026
⚠️ Nephrotoxicity Risk 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for calcium and vitamin D supplementation in deficiency states and bone health.
Reviewed by
SaathiMed Expert Panel | Sep 26, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Severe abdominal pain or blood in stool
  • Confusion, excessive thirst, or frequent urination
  • Irregular heartbeat or palpitations
  • Swelling of face, lips, or throat
  • Difficulty breathing
  • Severe flank pain or blood in urine
  • Muscle weakness or bone pain that worsens

If experiencing severe symptoms, call emergency services immediately.

What is jonacal tablet used for?

This medicine is a calcium and vitamin D3 supplement used to support bone health, treat deficiency, and prevent osteoporosis. It is taken orally, usually once daily with food.

  • Generic Name: Calcium (1250mg) + Vitamin D3 (250IU)
  • Manufacturer: Jonas Pharmaceuticals Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 jonacal tablet के बारे में (Hindi Summary)

उपयोग: यह दवा कैल्शियम और विटामिन डी3 की कमी को पूरा करने, हड्डियों को मजबूत बनाने, ऑस्टियोपोरोसिस और ऑस्टियोमलेशिया के इलाज में सहायक है। यह शरीर में कैल्शियम के अवशोषण को बढ़ाती है और हड्डियों के स्वास्थ्य को बनाए रखने में मदद करती है।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में कब्ज, पेट में गैस, जी मिचलाना और पेट खराब होना शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन अत्यधिक कैल्शियम से हाइपरकैल्सीमिया हो सकता है, जिसके लक्षण हैं भ्रम, अत्यधिक प्यास, बार-बार पेशाब आना और अनियमित दिल की धड़कन।

सुरक्षा सलाह: इस दवा को डॉक्टर के निर्देशानुसार ही लें। खुराक से अधिक न लें। इसे भोजन के साथ लें ताकि अवशोषण बेहतर हो और पेट की परेशानी कम हो। पर्याप्त पानी पिएं। यदि आपको गुर्दे की पथरी, गुर्दे की बीमारी, या हाइपरपैराथायरायडिज्म है, तो डॉक्टर को बताएं। कुछ दवाओं जैसे टेट्रासाइक्लिन, आयरन सप्लीमेंट और थायरॉइड हार्मोन के साथ इस दवा को लेने से पहले कम से कम 2 घंटे का अंतराल रखें।

💡 Did You Know? India is the largest provider of generic medicines globally, supplying over 50% of global vaccine demand.

💊 jonacal tablet Uses & Benefits

[{"condition":"Calcium and vitamin D deficiency","description":"This medicine is used to treat or prevent low levels of calcium and vitamin D, which are essential for bone health and various metabolic functions.","evidence":"Well-established"},{"condition":"Osteoporosis","description":"As an adjunct to primary osteoporosis therapy, this medicine helps maintain bone mineral density and reduces fracture risk when dietary intake is insufficient.","evidence":"Well-established"},{"condition":"Osteomalacia and rickets","description":"In conditions characterized by defective bone mineralization, this medicine provides calcium and vitamin D to support bone healing and growth.","evidence":"Well-established"},{"condition":"Hypocalcemia prevention","description":"This medicine may be prescribed to prevent low calcium levels in individuals with inadequate dietary intake or malabsorption syndromes.","evidence":"Well-established"},{"condition":"Dietary supplement in pregnancy and lactation","description":"When dietary intake is insufficient, this medicine may be recommended to meet increased calcium and vitamin D demands during pregnancy and breastfeeding.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Premenstrual syndrome (PMS)","description":"Calcium supplementation has been studied for reducing PMS symptoms, but this is not a primary approved use.","evidence":"Limited"},{"condition":"Colorectal cancer risk reduction","description":"Some observational studies suggest calcium may reduce colorectal cancer risk, but evidence is not definitive and this is not a recommended use.","evidence":"Limited"}]

Primary treatment for: Calcium and vitamin D deficiency

Also treats: Osteoporosis, Osteomalacia, Rickets, Hypocalcemia, Malabsorption syndromes

📋 Drug Information

Generic Name(s)Calcium (1250mg) + Vitamin D3 (250IU)
Brand Namejonacal tablet
ManufacturerJonas Pharmaceuticals Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassVITAMINS MINERALS NUTRIENTS
Action Class
Route of AdministrationOral
StorageStore at room temperature between 15°C and 30°C (59°F to 86°F). Protect from light and moisture. Keep in the original container.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine with a meal to enhance calcium absorption and reduce stomach upset.
2
Maintain adequate hydration by drinking plenty of water throughout the day.
3
Avoid taking this medicine within 2 hours of tetracycline antibiotics, iron supplements, or thyroid hormones.
4
Do not exceed the recommended dose unless advised by your doctor.
5
Inform your doctor if you have a history of kidney stones or kidney disease.
6
Regular monitoring of serum calcium and vitamin D levels may be necessary during long-term use.
7
Consult your doctor if you experience persistent constipation, nausea, or abdominal discomfort.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Bone pain and muscle weakness
This medicine is commonly prescribed for calcium and vitamin D deficiency causing these symptoms.
Likely Use
✅
Frequent fractures
May be used as part of osteoporosis management.
Likely Use
❌
Fever
This medicine is not a fever reducer.
Not Primary
❌
Acute injury
This medicine is not for immediate pain relief from injuries.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionCalcium absorption occurs primarily in the duodenum and proximal jejunum via active, vitamin D-dependent transport and passive diffusion. Vitamin D3 is well absorbed from the small intestine in the presence of bile salts. The bioavailability of calcium from this supplement is influenced by the presence of food and the dose taken at one time.
DistributionCalcium is distributed throughout the body, with approximately 99% stored in bones and teeth. The remaining 1% is present in extracellular fluids and soft tissues. Vitamin D3 and its metabolites are transported in the blood bound to vitamin D-binding protein.
Protein BindingCalcium is approximately 40% bound to plasma proteins, primarily albumin. Vitamin D metabolites are highly bound to vitamin D-binding protein.
MetabolismVitamin D3 is metabolized in the liver to 25-hydroxyvitamin D and further in the kidneys to 1,25-dihydroxyvitamin D, the active form. Calcium is not metabolized but is regulated by hormones.
Half-LifeThe half-life of 25-hydroxyvitamin D is approximately 2-3 weeks. Calcium is eliminated via renal excretion and fecal excretion.
ExcretionUnabsorbed calcium is excreted in feces. Absorbed calcium is primarily excreted in urine, with some loss through sweat and bile. Vitamin D metabolites are excreted mainly in bile and urine.
BioavailabilityCalcium absorption from supplements ranges from 25% to 35% depending on dose and vitamin D status. Vitamin D3 bioavailability is generally good, especially when taken with fat-containing meals.
Onset of ActionEffects on calcium absorption begin within hours, but clinical effects on bone density may take weeks to months of consistent use.
Peak Plasma TimeSerum calcium levels peak approximately 2-4 hours after oral intake. Vitamin D3 levels peak later due to conversion to active metabolites.
Duration of ActionThe effect on calcium homeostasis lasts approximately 24 hours, but bone effects require long-term use.

How It Works

This medicine provides elemental calcium and vitamin D3. Calcium is a essential mineral that plays a critical role in bone formation, muscle contraction, nerve conduction, and blood clotting. Vitamin D3 (cholecalciferol) enhances the intestinal absorption of calcium and phosphate by promoting the synthesis of calcium-binding proteins in the gut. It also helps regulate calcium homeostasis by acting on the kidneys and bones. Together, they support bone mineralization and maintain normal serum calcium levels.

Mechanism Steps

1
Vitamin D3 activation: Vitamin D3 is converted in the liver to 25-hydroxyvitamin D and then in the kidneys to its active form, 1,25-dihydroxyvitamin D, which binds to the vitamin D receptor.
2
Increased calcium absorption: Activation of the vitamin D receptor in the intestine leads to increased synthesis of calbindin, a calcium-binding protein that facilitates calcium uptake from the gut.
3
Calcium homeostasis: Elevated calcium levels suppress parathyroid hormone release, reducing bone resorption and renal calcium excretion, thus maintaining normal serum calcium.
4
Bone mineralization: Adequate calcium and phosphate, along with vitamin D, support the deposition of hydroxyapatite crystals in the bone matrix, enhancing bone strength.

💡 How to Take jonacal tablet

Strength: Calcium 1250 mg (equivalent to elemental calcium) and Vitamin D3 250 IU, immediate-release tablet.

1Swallow the tablet whole with a full glass of water.
2Take with a meal to improve absorption and reduce stomach upset.
3Do not crush, chew, or break the tablet unless instructed.
4Follow your doctor's instructions regarding timing and dose.
5If you are also taking other medications, separate them by at least 2 hours.

Dosage Information

Adult DosageThe typical adult dose of this medicine is one tablet once daily or as directed by a physician. The dose may be adjusted based on individual calcium and vitamin D requirements, dietary intake, and clinical condition. It is best taken with a meal to enhance absorption and minimize gastrointestinal upset. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may require the same dose as adults, but they are more prone to hypercalcemia and renal impairment. Regular monitoring of serum calcium and renal function is advised. Dose adjustments may be necessary based on kidney function.
Renal ImpairmentIn patients with renal impairment, calcium and vitamin D supplementation should be used with caution. Dose reduction or avoidance may be necessary. Monitor serum calcium and phosphate levels closely. Consult a nephrologist for individualized dosing.
Hepatic ImpairmentNo specific dose adjustment is established for hepatic impairment. However, vitamin D metabolism may be affected in severe liver disease. Monitor vitamin D levels and adjust dose accordingly.
Maximum Daily DoseThe maximum daily dose should not exceed the recommended amount unless directed by a physician. Generally, elemental calcium intake from all sources should not exceed 2000-2500 mg per day, and vitamin D3 should not exceed 4000 IU per day without medical supervision.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With meals
Take with food
Enhances calcium absorption and reduces stomach upset.
Oxalate-rich foods (spinach, rhubarb)
Avoid taking together
Oxalates can bind calcium and reduce absorption.
Phytate-rich foods (whole grains, bran)
Separate by 2 hours
Phytates can interfere with calcium absorption.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of jonacal tablet

✅ Common Side Effects

Constipation (Common (5-10%))
Increase dietary fiber and fluid intake. Consult doctor if persistent.
Bloating (Common (5-10%))
Take with food and stay hydrated. Usually resolves on its own.
Nausea (Common (5-10%))
Take with a meal to reduce nausea. If it continues, consult your doctor.
Stomach upset (Common (5-10%))
Take with food. Avoid taking on an empty stomach.

🚨 Serious Side Effects

Hypercalcemia (Rare (<0.1%))
Seek immediate medical attention if you experience confusion, excessive thirst, frequent urination, or irregular heartbeat.
Kidney stones (Rare (<0.1%))
Report severe flank pain or blood in urine to your doctor immediately.
Severe allergic reaction (Very rare (<0.01%))
Seek emergency care if you develop rash, swelling of face/lips/throat, or difficulty breathing.

⚠️ Rare Side Effects

Metallic taste
Usually temporary. Consult doctor if bothersome.
Dry mouth
Stay hydrated. If persistent, consult your doctor.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Tetracycline Major
Fluoroquinolones Major
Levothyroxine Major
Thiazide diuretics Major
Iron supplements Moderate
Bisphosphonates Moderate
Corticosteroids Moderate
Aluminum-containing antacids Minor
Sodium fluoride Minor
Digoxin Moderate

🚨 Major Interactions

  • Tetracycline antibiotics (e.g., doxycycline)
  • Fluoroquinolone antibiotics (e.g., ciprofloxacin)
  • Levothyroxine
  • Thiazide diuretics

⚡ Moderate Interactions

  • Iron supplements
  • Bisphosphonates
  • Corticosteroids

🍷 Alcohol Interaction

Alcohol may impair calcium absorption and vitamin D metabolism. Chronic heavy alcohol use can lead to bone loss and increase the risk of fractures. It is advisable to limit alcohol consumption while taking this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypercalcemia","Hypercalciuria","Severe renal impairment","History of calcium-containing kidney stones","Hypersensitivity to any component of this medicine","Sarcoidosis","Hyperparathyroidism"]

⚠️ Warnings & Precautions

["Do not exceed the recommended dose.","Use with caution in patients with renal impairment.","Monitor calcium levels in patients with a history of kidney stones.","Avoid concurrent use with other calcium or vitamin D supplements without medical advice.","Inform your doctor if you are taking thiazide diuretics or digoxin.","Not intended for the treatment of acute hypocalcemia.","Keep out of reach of children."]

🤱 Lactation Safety

Calcium and vitamin D3 are excreted in breast milk and are considered safe during breastfeeding. They are essential for infant bone health. Consult your doctor for proper supplementation.

💊 Overdose Management

Overdose of this medicine can lead to hypercalcemia, which may present as nausea, vomiting, confusion, polyuria, and cardiac arrhythmias. Treatment includes discontinuation of the supplement, hydration, and in severe cases, hospitalization for intravenous fluids and monitoring. Seek immediate medical attention if overdose is suspected.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose to catch up.

Additional Safety Advice

General Safety

Take this medicine exactly as directed by your healthcare provider. Do not exceed the recommended dose, as excessive calcium intake can lead to serious complications. Swallow the tablet whole with a full glass of water, preferably with a meal to enhance absorption and reduce stomach upset. Maintain adequate hydration throughout the day. Inform your doctor if you have a history of kidney stones, kidney disease, hyperparathyroidism, or sarcoidosis, as these conditions may require dose adjustments or alternative treatments. Avoid taking this medicine within two hours of certain medications such as tetracycline antibiotics, iron supplements, or thyroid hormones, as calcium can interfere with their absorption. Regular monitoring of serum calcium and vitamin D levels may be necessary during long-term use. Do not use this medicine as a substitute for a balanced diet. Keep out of reach of children. Store in a cool, dry place away from direct sunlight.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more susceptible to hypercalcemia and renal impairment. Regular monitoring of serum calcium and kidney function is recommended. The dose may need adjustment based on renal function. Ensure adequate hydration and fall prevention strategies.

🤰 Pregnancy Planning (TTC)

Calcium and vitamin D are essential for fetal development. If you are planning pregnancy, ensure adequate intake through diet and supplements as advised by your doctor. Do not exceed recommended doses. Consult your healthcare provider for personalized advice.

🏥 Post-Surgery Considerations

After surgery, especially orthopedic surgery, calcium and vitamin D supplementation may be beneficial for bone healing. Follow your surgeon's recommendations regarding supplementation and monitor calcium levels if advised.

🦷 Dental Procedures

No specific precautions are needed for dental procedures while taking this medicine. However, inform your dentist about all medications you are taking.

💚 Lifestyle Tips for Better Results

🏃
Maintain a balanced diet rich in calcium and vitamin D.
🥗
Engage in regular weight-bearing exercises like walking or dancing.
😴
Get adequate sunlight exposure for natural vitamin D synthesis.
💧
Avoid smoking and limit alcohol consumption to protect bone health.
🧘
Ensure adequate sleep to support overall health and bone remodeling.

🏋️ Exercise Considerations

Weight-bearing exercises are beneficial for bone health, but if you have osteoporosis or are at risk of fractures, avoid high-impact activities that could cause injury. Consult your doctor or a physical therapist for a safe exercise plan.

🥗 Diet Recommendations

Include dairy products, leafy greens, and fortified foods in your diet.
Consume fatty fish like salmon for natural vitamin D.
Limit caffeine and excessive salt intake, which can increase calcium loss.
Stay well hydrated to support kidney function.

💼 Impact on Daily Work & Life

This medicine is unlikely to affect your ability to drive or operate machinery. However, if you experience dizziness or any unusual symptoms, avoid these activities until you feel well. It can be taken at any time of day, but taking it with a meal may help you remember and reduce stomach upset.

🛑 When to Stop This Medicine

Do not stop taking this medicine without consulting your doctor. If you experience severe side effects or your doctor advises discontinuation, follow their guidance. Stopping abruptly may not cause immediate harm, but it could affect your bone health over time.

📅 Long-Term Use Effects

Long-term use of this medicine at recommended doses is generally safe and beneficial for bone health. However, excessive intake can lead to hypercalcemia, kidney stones, and soft tissue calcification. Regular monitoring of serum calcium, vitamin D levels, and renal function is advised, especially in elderly patients and those with kidney disease. Periodic review with your doctor is recommended to adjust the dose based on your individual needs.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Dietary calcium and vitamin D

Increasing intake of calcium-rich foods and getting sunlight can help maintain levels.

Evidence: Well-established
Weight-bearing exercise

Regular exercise can improve bone density and reduce fracture risk.

Evidence: Well-established
Other calcium supplements

Calcium citrate or other forms may be better tolerated in some individuals.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. Continue with your regular vaccination schedule as advised by your doctor.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

When traveling, carry this medicine in its original packaging along with a copy of your prescription. Store it in a cool, dry place away from direct sunlight. If crossing time zones, continue taking your dose at the usual time or adjust gradually as advised by your doctor. Keep it in your carry-on luggage to avoid loss or exposure to extreme temperatures. Check customs regulations for bringing supplements into your destination country.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 55-year-old postmenopausal woman with osteopenia
She was prescribed this medicine along with lifestyle modifications. After 6 months of consistent use, her repeat DEXA scan showed improvement in bone mineral density. She reported that taking the tablet with breakfast helped her remember and reduced stomach upset.
💡 Lesson: Consistent daily intake with food improves both efficacy and tolerability of calcium and vitamin D supplements.
👤 A 40-year-old man with vitamin D deficiency and muscle cramps
He started this medicine as recommended by his doctor. Within a few weeks, his muscle cramps reduced significantly. He also increased his dietary calcium intake and spent more time outdoors. He emphasized the importance of not missing doses.
💡 Lesson: Combining supplementation with dietary and lifestyle changes yields better results for deficiency-related symptoms.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts contributing to calcium levels within hours, but noticeable effects on bone health may take several weeks to months of consistent use.

Q: Can I take it on an empty stomach?

A: It is best taken with food to enhance absorption and reduce the risk of stomach upset.

Q: Is it safe to take with other medications?

A: It can interact with certain antibiotics, thyroid hormones, and iron supplements. Always inform your doctor about all medications you are taking.

Q: What should I do if I miss a dose?

A: Take it as soon as you remember, but if it's almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double dose.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for jonacal tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Calcium supplements can cause kidney stones in everyone.
    Fact: Kidney stones are a rare side effect and usually occur with excessive doses or in susceptible individuals. Adequate hydration and proper dosing reduce risk.
  • Myth: Vitamin D3 in this supplement is enough to treat severe deficiency.
    Fact: The vitamin D3 content (250 IU) is relatively low and may not be sufficient for treating severe deficiency. Higher doses may be needed under medical supervision.
  • Myth: Calcium supplements should be taken on an empty stomach for better absorption.
    Fact: Calcium absorption is better when taken with food, especially in the presence of vitamin D. Taking with food also reduces stomach upset.

🔄 Alternative Options

Generic Alternatives

  • Calcium carbonate + Vitamin D3 tablets
  • Calcium citrate + Vitamin D3 tablets

Brand Alternatives

  • Shelcal 250
  • Calcimax
  • Ostocalcium
  • Gemcal

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","calcium_salt":"Calcium carbonate","elemental_calcium":"1250 mg","vitamin_d3":"250 IU","release_type":"Immediate release"},{"medicine":"Calcium citrate + D3","calcium_salt":"Calcium citrate","elemental_calcium":"1000 mg","vitamin_d3":"250 IU","release_type":"Immediate release"}]

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