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  1. Home
  2. OTC

  3. Calnir 500/1000 Tablet 10's

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About Calnir 500/1000 Tablet 1

Calnir 500/1000 Tablet 1 belongs to the class of 'nutritional supplements', primarily used to treat low blood calcium levels. Calnir 500/1000 Tablet 1 effectively treats various conditions caused by low calcium levels in the body like Vitamin D deficiency, osteoporosis (weak and brittle bones), hypoparathyroidism (parathyroid glands make low levels of calcium in the body), latent tetany (a muscle disease with low blood calcium levels), and rickets or osteomalacia (softening or deforming of bones due to lack of calcium). Vitamin D deficiency occurs when your body has low Vitamin D levels and is caused due to inadequate nutrition, intestinal malabsorption, or lack of sunlight exposure.

Calnir 500/1000 Tablet 1 consists Calcium (mineral) and Cholecalciferol (Vitamin D3). Calcium is a mineral that is used to prevent or treat a calcium deficiency. It provides essential nutrients to maintain bone formation and maintenance. Cholecalciferol is a form of Vitamin D and helps maintain blood calcium and phosphorus levels and bone mineralisation. It is used to treat and prevent bone disorders, such as rickets and osteomalacia.

Your doctor will decide the dosage based on your medical condition. Calnir 500/1000 Tablet 1 is likely safe to consume. In some cases, it may cause side effects like constipation and stomach upset. These side effects do not require medical attention and gradually resolve over time.

If you are known to be allergic to Calnir 500/1000 Tablet 1 or its inactive components, inform your doctor. Please tell your doctor if you have heart/kidney/liver/blood vessel diseases, kidney stones, hypercalcaemia (high calcium levels), hypervitaminosis D (high vitamin D levels), low levels of bile, phosphate imbalance, and malabsorption syndrome (difficulty absorbing nutrition from food) before starting Calnir 500/1000 Tablet 1.  Pregnant or breastfeeding women should consult their doctor before taking Calnir 500/1000 Tablet 1.This supplement is safe to use in children when advised by the doctor. 

Uses of Calnir 500/1000 Tablet 1

Osteoporosis, Osteomalacia (Rickets), Vitamin D deficiency, Hypoparathyroidism, and Latent tetany.

Medicinal Benefits

Calnir 500/1000 Tablet 1 consists of Calcium (mineral) and Cholecalciferol (Vitamin D3). Calcium is a mineral that is used to prevent or treat a calcium deficiency. It provides essential nutrients to maintain bone formation and maintenance. Cholecalciferol helps maintain blood calcium and phosphorus levels and mineralization of bone.

Directions for Use

Tablet/capsule: Swallow it as a whole with water; do not crush, break or chew it.Syrup/Suspension: Shake the bottle well before use. Take the recommended dose by mouth using the measuring cup/dosing syringe/dropper provided by the pack.Chewable tablet: Chew the tablet completely and swallow. Do not swallow it as a whole.

Storage

Store in a cool and dry place away from sunlight

Side Effects of Calnir 500/1000 Tablet 1

  • Constipation
  • Stomach upset 

Drug Warnings

Let your doctor know if you are allergic to Calnir 500/1000 Tablet 1 or its inactive components. Calnir 500/1000 Tablet 1 is not recommended if you have hypercalcaemia (high calcium levels), hypervitaminosis D (high vitamin D levels), and malabsorption syndrome (difficulty absorbing nutrition from food). Brief your medical history if you have any heart/kidney/liver/blood vessel diseases, kidney stones, sarcoidosis (growth of inflammatory cells in different parts of the body), Crohn's disease (inflammatory bowel disease), Whipple's disease (bacterial infection affecting joints and digestive system), achlorhydria (little or no stomach acid), low levels of bile, and phosphate imbalance. It is advised to check with your doctor before using Calnir 500/1000 Tablet 1 if you are pregnant or breastfeeding. Drinking alcohol may affect calcium absorption; therefore, it is advised to limit alcohol intake while using Calnir 500/1000 Tablet 1. Calnir 500/1000 Tablet 1 is safe to use in children when advised by the doctor. Do not store Calnir 500/1000 Tablet 1 above 25°C.

Drug Interactions

Drug-Drug Interactions: Calnir 500/1000 Tablet 1 may interact with drugs treating high cholesterol levels (cholestyramine, colestipol), antibiotics (doxycycline, ciprofloxacin, penicillin), anti-cancer drugs (estramustine), drugs treating bone loss (alendronate), thyroid hormone (levothyroxine), weight-loss drugs (orlistat), fits medicines (phenobarbital), mineral oils (paraffin), water pills (furosemide), and heart-related medicines (digitoxin).

Drug-Food Interactions: Avoid or reduce the intake of caffeine, soft drinks, and alcohol that inhibit calcium absorption.

Drug-Disease Interactions: Before using Calnir 500/1000 Tablet 1, consult your doctor if you have hypercalcemia, hypervitaminosis D, malabsorption syndrome, Vitamin D toxicity, heart/kidney/liver/blood vessel diseases, kidney stones, sarcoidosis, Crohn's disease, Whipple's disease, achlorhydria, low levels of bile, phosphate imbalance, diabetes, and phenylketonuria.

Drug-Drug Interactions Checker List

  • CHOLESTYRAMINE
  • COLESTIPOL
  • DOXYCYCLINE
  • CIPROFLOXACIN
  • PENICILLIN
  • ESTRAMUSTINE
  • ALENDRONATE SODIUM
  • LEVOTHYROXINE
  • ORLISTAT
  • PHENOBARBITAL
  • PARAFFIN
  • FUROSEMIDE
  • DIGITOXIN

Habit Forming

No

Diet & Lifestyle Advise

  • Include dairy products like milk, yoghurt, cheese or milk-based custard in your diet.
  • Eat daily a serving of broccoli, cabbage, bok choy, spinach and other green leafy vegetables.
  • Include the best dietary sources of vitamin D, such as fish liver oils and vitamin D–fortified milk.
  • Snack on calcium-rich nuts like Brazil nuts or almonds. 
  • Sprinkle sesame seeds over your food, vegetables and salads. Sesame seeds are high in calcium.
  • Avoid or reduce the intake of caffeine, soft drinks and alcohol that inhibit the calcium absorption.
  • Replace the meat with tofu or tempeh for extra calcium in your food.

Special Advise

  • Calnir 500/1000 Tablet 1 may interfere with cholesterol tests, hence please inform your doctor and laboratory staff that you are taking Calnir 500/1000 Tablet 1 before undergoing blood tests.
  • Clinical monitoring of serum electrolyte concentrations and cardiac function is recommended. 

Disease/Condition Glossary

Vitamin D deficiency: When a person cannot get enough Vitamin D through food and exposure to sunlight, it leads to vitamin D deficiency. It often leads to thin, brittle, or misshapen bones.

Osteoporosis: It is a bone disease that causes weak and brittle bones by decreasing bone density. 

Tetany: A disease condition due to low levels of calcium (hypocalcemia) in the body that causes cramps and spasms in the hands, feet, and larynx (voice box).

Osteomalacia/Rickets: A disease caused by softening and weakening bones in children due to inadequate vitamin D. Hypoparathyroidism: It is a disease characterized by low parathyroid hormone levels. This can cause low calcium levels and trigger tetany (muscle cramps, spasms or tremors).

Consult Doctor

About Calnir 500/1000 Tablet 1

Calnir 500/1000 Tablet 1 belongs to the class of 'nutritional supplements', primarily used to treat low blood calcium levels. Calnir 500/1000 Tablet 1 effectively treats various conditions caused by low calcium levels in the body like Vitamin D deficiency, osteoporosis (weak and brittle bones), hypoparathyroidism (parathyroid glands make low levels of calcium in the body), latent tetany (a muscle disease with low blood calcium levels), and rickets or osteomalacia (softening or deforming of bones due to lack of calcium). Vitamin D deficiency occurs when your body has low Vitamin D levels and is caused due to inadequate nutrition, intestinal malabsorption, or lack of sunlight exposure.

Calnir 500/1000 Tablet 1 consists Calcium (mineral) and Cholecalciferol (Vitamin D3). Calcium is a mineral that is used to prevent or treat a calcium deficiency. It provides essential nutrients to maintain bone formation and maintenance. Cholecalciferol is a form of Vitamin D and helps maintain blood calcium and phosphorus levels and bone mineralisation. It is used to treat and prevent bone disorders, such as rickets and osteomalacia.

Your doctor will decide the dosage based on your medical condition. Calnir 500/1000 Tablet 1 is likely safe to consume. In some cases, it may cause side effects like constipation and stomach upset. These side effects do not require medical attention and gradually resolve over time.

If you are known to be allergic to Calnir 500/1000 Tablet 1 or its inactive components, inform your doctor. Please tell your doctor if you have heart/kidney/liver/blood vessel diseases, kidney stones, hypercalcaemia (high calcium levels), hypervitaminosis D (high vitamin D levels), low levels of bile, phosphate imbalance, and malabsorption syndrome (difficulty absorbing nutrition from food) before starting Calnir 500/1000 Tablet 1.  Pregnant or breastfeeding women should consult their doctor before taking Calnir 500/1000 Tablet 1.This supplement is safe to use in children when advised by the doctor. 

Calnir 500/1000 Tablet 10's , Pack of 10
Non returnable*
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COD available

Online payment accepted

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Composition :

CALCIUM-500MG + CHOLECALCIFEROL-1000IU

Consume Type :

ORAL

Return Policy :

Not Returnable

Expires on or after :

Country of origin

India
Other Info - CAL2744

FAQs

Calnir 500/1000 Tablet 1 is a dietary supplement that treats low levels of calcium in the blood. It consists of Calcium and Cholecalciferol. Calcium is a mineral and prevents or treats calcium deficiency. Cholecalciferol, also known as Vitamin D3, helps maintain blood calcium and phosphorus levels and bone mineralisation. When you don't get enough Vitamin D from food sources and sunlight exposure, Calnir 500/1000 Tablet 1 helps balance those low levels.

If you miss a dose, take it as soon as you remember. However, if it is time for the next scheduled dose, skip the missed dose and follow your usual dosage.

Milk is considered to be the best source of calcium. You can take Calnir 500/1000 Tablet 1 with milk.

Calnir 500/1000 Tablet 1 can cause kidney stones due to excess calcium deposition when used for a prolonged period. Please consult your doctor before taking Calnir 500/1000 Tablet 1 as a daily supplement if you have any kidney problems or a history of kidney stones.

Calnir 500/1000 Tablet 1 is used to increase low levels of calcium in the body. Hence it is not advised to use Calnir 500/1000 Tablet 1 during hypercalcaemia, since it causes the overdose of calcium leading to kidney stones and other effects.

Antacids may increase the absorption of Calcium from Calnir 500/1000 Tablet 1. Hence it is advised to take Calnir 500/1000 Tablet 1 two hours before, or four hours after taking antacids.

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.
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Alcohol

Caution

Drinking alcohol can affect the calcium absorption, hence it is advised to limit the alcohol intake while using Calnir 500/1000 Tablet 1.

bannner image

Pregnancy

Caution

During pregnancy, use higher doses of Calnir 500/1000 Tablet 1 than the daily dietary allowance only when advised by the doctor. Your doctor will weigh the potential risks and benefits before recommending Calnir 500/1000 Tablet 1.

bannner image

Breast Feeding

Caution

Consult your doctor before taking Calnir 500/1000 Tablet 1 if you are breastfeeding.

bannner image

Driving

Not applicable

Calnir 500/1000 Tablet 1 is usually safe and does not interact with your driving ability.

bannner image

Liver

Caution

Let your doctor know if you have any history of liver diseases before taking Calnir 500/1000 Tablet 1.

bannner image

Kidney

Caution

It is advised to seek doctor advice before starting Calnir 500/1000 Tablet 1 if you have kidney diseases like kidney stones or undergoing dialysis. Caution should be taken in patients undergoing dialysis before starting Calnir 500/1000 Tablet 1.

bannner image

Children

Consult your doctor

The doctor will decide the dosage of Calnir 500/1000 Tablet 1 based on the child's age and weight.

Product Substitutes

Author Details

Doctor image

Written By

Divya L

PharmaD

Bayyarapu Mahesh KumarDoctor badge

Reviewed By

Bayyarapu Mahesh Kumar

M Pharmacy

Last Updated

Jul 8, 2025 | 9:33 AM IST

Doctor imageWe provide you with authentic, trustworthy and relevant information

Reference

  1. https://www.drugs.com/vitamin-d.html
  2. https://www.medicines.org.uk/emc/files/pil.292.pdf
  3. https://pubchem.ncbi.nlm.nih.gov/compound/Cholecalciferol#section=Pharmacology
  4. https://www.drugs.com/mtm/calcium-carbonate.html

Uses of Calnir 500/1000 Tablet 1

Osteoporosis, Osteomalacia (Rickets), Vitamin D deficiency, Hypoparathyroidism, and Latent tetany.

Medicinal Benefits

Calnir 500/1000 Tablet 1 consists of Calcium (mineral) and Cholecalciferol (Vitamin D3). Calcium is a mineral that is used to prevent or treat a calcium deficiency. It provides essential nutrients to maintain bone formation and maintenance. Cholecalciferol helps maintain blood calcium and phosphorus levels and mineralization of bone.

Directions for Use

Tablet/capsule: Swallow it as a whole with water; do not crush, break or chew it.Syrup/Suspension: Shake the bottle well before use. Take the recommended dose by mouth using the measuring cup/dosing syringe/dropper provided by the pack.Chewable tablet: Chew the tablet completely and swallow. Do not swallow it as a whole.

Storage

Store in a cool and dry place away from sunlight

Drug Warnings

Let your doctor know if you are allergic to Calnir 500/1000 Tablet 1 or its inactive components. Calnir 500/1000 Tablet 1 is not recommended if you have hypercalcaemia (high calcium levels), hypervitaminosis D (high vitamin D levels), and malabsorption syndrome (difficulty absorbing nutrition from food). Brief your medical history if you have any heart/kidney/liver/blood vessel diseases, kidney stones, sarcoidosis (growth of inflammatory cells in different parts of the body), Crohn's disease (inflammatory bowel disease), Whipple's disease (bacterial infection affecting joints and digestive system), achlorhydria (little or no stomach acid), low levels of bile, and phosphate imbalance. It is advised to check with your doctor before using Calnir 500/1000 Tablet 1 if you are pregnant or breastfeeding. Drinking alcohol may affect calcium absorption; therefore, it is advised to limit alcohol intake while using Calnir 500/1000 Tablet 1. Calnir 500/1000 Tablet 1 is safe to use in children when advised by the doctor. Do not store Calnir 500/1000 Tablet 1 above 25°C.

Therapeutic Class

NUTRITIONAL SUPPLEMENT

Drug-Drug Interactions Checker List

  • CHOLESTYRAMINE
  • COLESTIPOL
  • DOXYCYCLINE
  • CIPROFLOXACIN
  • PENICILLIN
  • ESTRAMUSTINE
  • ALENDRONATE SODIUM
  • LEVOTHYROXINE
  • ORLISTAT
  • PHENOBARBITAL
  • PARAFFIN
  • FUROSEMIDE
  • DIGITOXIN

Diet & Lifestyle Advise

  • Include dairy products like milk, yoghurt, cheese or milk-based custard in your diet.
  • Eat daily a serving of broccoli, cabbage, bok choy, spinach and other green leafy vegetables.
  • Include the best dietary sources of vitamin D, such as fish liver oils and vitamin D–fortified milk.
  • Snack on calcium-rich nuts like Brazil nuts or almonds. 
  • Sprinkle sesame seeds over your food, vegetables and salads. Sesame seeds are high in calcium.
  • Avoid or reduce the intake of caffeine, soft drinks and alcohol that inhibit the calcium absorption.
  • Replace the meat with tofu or tempeh for extra calcium in your food.

Habit Forming

No

Special Advise

  • Calnir 500/1000 Tablet 1 may interfere with cholesterol tests, hence please inform your doctor and laboratory staff that you are taking Calnir 500/1000 Tablet 1 before undergoing blood tests.
  • Clinical monitoring of serum electrolyte concentrations and cardiac function is recommended. 

Disease/Condition Glossary

Vitamin D deficiency: When a person cannot get enough Vitamin D through food and exposure to sunlight, it leads to vitamin D deficiency. It often leads to thin, brittle, or misshapen bones.

Osteoporosis: It is a bone disease that causes weak and brittle bones by decreasing bone density. 

Tetany: A disease condition due to low levels of calcium (hypocalcemia) in the body that causes cramps and spasms in the hands, feet, and larynx (voice box).

Osteomalacia/Rickets: A disease caused by softening and weakening bones in children due to inadequate vitamin D. Hypoparathyroidism: It is a disease characterized by low parathyroid hormone levels. This can cause low calcium levels and trigger tetany (muscle cramps, spasms or tremors).

Calnir 500/1000 Tablet 1 Substitute

Substitutes safety advice

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