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compositionComposition:VITAMIN D3-800IU
Calnez-D3 800IU Drop 30 ml

Calnez-D3 800IU Drop is a combination medicine primarily used to treat nutritional deficiencies, low calcium levels (hypocalcaemia), osteoporosis, osteomalacia (Rickets), and vitamin D deficiency. This medicine works by increasing the calcium and vitamin D levels in the body and regulates bodily functions, thus providing essential nutrients necessary for bone formation and maintenance. Common side effects include constipation, nausea, vomiting, and stomach upset.

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Written By Lakshmithulasi Yarragunta , PharmD (PB)
Reviewed By Veda Maddala , M Pharmacy
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More about the Product

Composition :

VITAMIN D3-800IU

Manufacturer/Marketer :

Sitnez Biocare Pvt Ltd

Consume Type :

Oral

Expires on or after :

Jan-27

Return Policy :

Not Returnable

About Calnez-D3 800IU Drop

Calnez-D3 800IU Drop is a vitamin supplement primarily used to treat vitamin D deficiency. Vitamin D deficiency occurs when your body has low Vitamin D levels and is caused by inadequate nutrition, intestinal malabsorption, or lack of sunlight exposure. It effectively treats various conditions, including low calcium levels, osteoporosis (weak bones), latent tetany (a muscle disease characterized by low blood calcium levels), and rickets or osteomalacia (softening of bones due to low calcium levels).

Calnez-D3 800IU Drop contains Cholecalciferol, a form of vitamin D. It promotes the absorption of calcium, phosphorus, and vitamin A from different organs and helps maintain overall health.

Calnez-D3 800IU Drop is likely safe to consume. In rare cases, it may cause side effects such as constipation, increased blood calcium levels, elevated calcium levels in urine, vomiting, and nausea. These side effects typically do not require medical attention and usually resolve gradually over time. If these side effects persist, please consult your physician immediately.

Take Calnez-D3 800IU Drop as advised. Your physician will decide the dosage based on your medical condition. You can take Calnez-D3 800IU Drop with or without food. It is advised not to take more than the recommended dose of Calnez-D3 800IU Drop. Do not touch the medicine with wet hands.

Inform your physician if you are allergic to Calnez-D3 800IU Drop. This medicine may contain sugar or aspartame. Hence, caution should be taken in diabetes and phenylketonuria (increased levels of an amino acid called phenylalanine). Let your doctor know if you have any liver/kidney disease, heart disease, kidney stones and hypervitaminosis D (having too much vitamin D) or are pregnant or breastfeeding before taking Calnez-D3 800IU Drop. Calnez-D3 800IU Drop is safe to use in children when recommended by the paediatrician.

Uses of Calnez-D3 800IU Drop

Calnez-D3 800IU Drop is used to prevent or treat Vitamin D deficiency. The detailed uses of Calnez-D3 800IU Drop are as follows:

  • Prevention of Vitamin D Deficiency: Calnez-D3 800IU Drop helps prevent vitamin D deficiency in people who don’t get enough sunlight or have limited dietary sources of vitamin D.
  • Support for bone health: Calnez-D3 800IU Drop supports bone health by aiding calcium absorption, which helps maintain strong bones and reduces the risk of fractures.
  • Immune System Support: Calnez-D3 800IU Drop boosts the immune system, which can be especially beneficial during flu season or when you are more prone to getting sick.
  • Management of Chronic Conditions: Calnez-D3 800IU Drop may help manage chronic conditions like rheumatoid arthritis and multiple sclerosis.

Key Benefits

  • Calnez-D3 800IU Drop is used to treat low blood calcium levels. It effectively treats various conditions in the body, including vitamin D deficiency, osteoporosis, hypoparathyroidism, latent tetany, and rickets or osteomalacia.
  • Calnez-D3 800IU Drop contains cholecalciferol (vitamin D3). Cholecalciferol is a steroid hormone produced in the skin when exposed to ultraviolet light or obtained from food sources.
  • Calnez-D3 800IU Drop is a provitamin that is converted into a vitamin after intake. It helps maintain blood calcium and phosphorus levels and mineralisation of bone.
  • Calnez-D3 800IU Drop is also used in treating familial hypophosphatemia (a group of rare inherited disorders characterised by low phosphate levels resulting in deformities of the bones and teeth).

Directions for Use

  • Calnez-D3 800IU Drop can be taken with food.
  • Follow your doctor's instructions on the dosage and timing of this medication.
  • Swallow Calnez-D3 800IU Drop as a whole with a glass of water.
  • Do not crush, break, or chew it.

How Calnez-D3 800IU Drop Works

Calnez-D3 800IU Drop contains 'Vitamin-D3' (Cholecalciferol). It helps maintain blood calcium and phosphorus levels and the mineralization of bone. It is used to treat and prevent bone disorders, such as rickets and osteomalacia. It aids in calcium absorption, enabling bone growth and repair. It further prevents cartilage degeneration.
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Alcohol

Consult your doctor

It is advisable to limit/avoid alcohol intake during the treatment. Please consult a doctor before consuming alcohol while using Calnez-D3 800IU Drop.

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Pregnancy

Consult your doctor

Inform your doctor if you are pregnant before taking Calnez-D3 800IU Drop.

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Breast Feeding

Consult your doctor

Please consult your doctor if you are a nursing mother before taking Calnez-D3 800IU Drop.

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Driving

Safe if suggested

Calnez-D3 800IU Drop usually does not interfere with your driving ability.

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Liver

Consult your doctor

Inform your doctor if you have any history of liver diseases before taking Calnez-D3 800IU Drop. Liver impairment can alter the metabolic and therapeutic activity of certain Vitamin D forms.

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Kidney

Consult your doctor

It is advised to seek your doctor's advice before starting Calnez-D3 800IU Drop if you have kidney diseases like kidney stones or undergoing dialysis.

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Children

Consult your doctor

Calnez-D3 800IU Drop should be used in children only when advised by a doctor. Dose adjustment may be necessary.

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Heart

Safe if suggested

Calnez-D3 800IU Drop is usually safe for individuals with heart problems when taken in the recommended dose. However, consult your doctor if you have any concerns or underlying heart issues.

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Geriatrics

Safe if suggested

Calnez-D3 800IU Drop is generally considered safe for elderly patients when given as recommended by a doctor. Consult your doctor if you have any concerns.

What if I have taken an overdose of Calnez-D3 800IU Drop

Do not take more than the suggested dose of Calnez-D3 800IU Drop as it may cause overdose. The symptoms of overdose include loss of appetite, confusion, nausea, body pains, urinating more or less than usual, thirst, irregular heartbeats or stiffness. If you suspect you have taken overdose or notice signs of overdose, please consult a doctor immediately.

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.
  • Spend time under the sunlight for at least 30 minutes early in the morning.
  • 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 calcium absorption.
  • Replace the meat with tofu or tempeh for extra calcium in your food.

Have a query?

How Soon It Starts Working

  • The time required for Calnez-D3 800IU Drop to start to work: The time required for Calnez-D3 800IU Drop to show its action is unknown. 
  • The time for which the effects of Calnez-D3 800IU Drop last: The duration of action for Calnez-D3 800IU Drop is clinically unknown.

Storage

• Store in a cool and dry place away from sunlight.• Keep out of sight and reach of children.• Non cold chain - To be stored in cool places at 10ºC to 25ºC or below 30ºC.

What if you forget to take Calnez-D3 800IU Drop

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

Drug Warnings

  • Tell your physician if you are allergic to Calnez-D3 800IU Drop. It may contain sugar or aspartame. Hence, caution should be taken in diabetes and phenylketonuria (increased levels of an amino acid called phenylalanine).
  • Inform your doctor if you have any history of hypercalcemia, hyperparathyroidism, kidney disease, liver disease, electrolyte imbalance, heart disease, kidney stones and hypervitaminosis D (having too much vitamin D) before taking Calnez-D3 800IU Drop.
  • Pregnant or breastfeeding women should consult their physician before taking Calnez-D3 800IU Drop. Higher doses of Vitamin D than the recommended daily dose should be used in pregnant women only when advised by the doctor.
  • Calnez-D3 800IU Drop is safe to use in children above 2 years of age only at the recommended dose. Your paediatrician will decide the dose of the medicine based on your child's age and body weight.
  • Store Calnez-D3 800IU Drop at room temperature away from sunlight. Keep the medicine out of reach of children.
  • Do not take more than the recommended dose of medicine, as too much of vitamin D intake can lead to hypercalcemia (increased calcium levels in the body).
  • It is always important to check for the expiry of the medicine. Discard the medicine if it reaches the expiry date.

Drug-Drug Interactions

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Drug-Drug Interaction: Calnez-D3 800IU Drop may interact with drugs treating high cholesterol levels (cholestyramine), anti-epileptic (carbamazepine, phenobarbital), antibiotics (doxycycline, neomycin, and chloramphenicol), drugs treating bone loss (alendronate), thyroid hormone (levothyroxine), diuretics (hydrochlorothiazide) and heart-related medicines (digoxin).

Drug-Food Interaction: Limit alcohol intake during the course to get the maximum benefits of Calnez-D3 800IU Drop.

Drug-Disease Interaction: Let your doctor know if you have hypercalcemia, hypervitaminosis D, malabsorption syndrome (difficulty absorbing nutrition from food), Vitamin D toxicity, heart/kidney/liver/blood vessel diseases, and kidney stones before using Calnez-D3 800IU Drop.

ColecalciferolDihydrotachysterol
Severe
ColecalciferolCalcitriol
Severe

Drug-Drug Interactions

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ColecalciferolDihydrotachysterol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
Cholecalciferol and dihydrotachysterol are forms of vitamin D, and taking too much vitamin D may lead to toxic effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and dihydrotachysterol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - contact a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolCalcitriol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
Co-administration of Cholecalciferol and Calcitriol are forms of vitamin D, and taking too much vitamin D may lead to toxic effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and calcitriol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - contact a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolCalcifediol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
The combined use of calcifediol with cholecalciferol can increase the risk of side effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and calcifediol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - contact a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolDoxercalciferol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
Cholecalciferol and doxercalciferol are forms of vitamin D, and taking too much vitamin D may lead to toxic effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and doxercalciferol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - make sure to call a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolParicalcitol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
The combined use of cholecalciferol and paricalcitol are forms of vitamin D, and taking too much vitamin D may lead to toxic effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and paricalcitol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - contact a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolAluminium hydroxide
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
The combined use of aluminum hydroxide with Calnez-D3 800IU Drop 30 ml may increase the risk of toxicity.

How to manage the interaction:
Co-administration of Calnez-D3 800IU Drop 30 ml with Aluminium hydroxide can possibly result in an interaction, but it can be taken if your doctor has advised it. If you're having any of these symptoms like bone pain, muscle weakness, anemia, seizures, or dementia, it's important to contact your doctor right away. Do not stop using any medications without a doctor's advice.
ColecalciferolErgocalciferol
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
The combined use of cholecalciferol and ergocalciferol are forms of vitamin D, and taking too much vitamin D may lead to toxic effects.

How to manage the interaction:
Although there is a possible interaction between Calnez-D3 800IU Drop 30 ml and ergocalciferol, you can take these medicines together if prescribed by your doctor. If you notice any of these symptoms - irregular heartbeat, seizures, weakness, tiredness, headache, dizziness, ringing in the ears, loss of appetite, feeling sick, dry mouth, strange taste in your mouth, muscle or bone pain, thirst, losing weight, eye infection, sensitivity to light, runny nose or itching - contact a doctor right away. Do not discontinue any medications without consulting a doctor.
ColecalciferolSucralfate
Severe
How does the drug interact with Calnez-D3 800IU Drop 30 ml:
Taking Cholecalciferol together with Sucralfate may increase the risk or severity of kidney problems.

How to manage the interaction:
There may be a possibility of interaction between Cholecalciferol and Sucralfate, but it can be taken if prescribed by a doctor. Do not discontinue any medications without consulting a doctor.

Drug-Food Interactions

verifiedApollotooltip
No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

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All Substitutes & Brand Comparisons

Habit Forming

No

Therapeutic Class

[VITAMIN D ANALOGS]

FAQs

Calnez-D3 800IU Drop is used to treat vitamin D deficiency. It effectively treats various conditions in the body like low calcium levels, 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).
Calnez-D3 800IU Drop is a dietary supplement that consists of Vitamin D3 (Cholecalciferol). It helps maintain blood calcium and phosphorus levels, as well as the mineralisation of bone. When you don't get enough Vitamin D from food sources and sunlight exposure, Calnez-D3 800IU Drop helps replenish those low levels.
Calnez-D3 800IU Drop should be used with caution in conditions like hypercalcaemia (high calcium levels), hypervitaminosis D (high vitamin D levels), liver/kidney problems, heart diseases, phenylketonuria (increased phenylalanine levels in the blood), and diabetes.
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.
Antacids usually do not interfere with the absorption of Calnez-D3 800IU Drop. However, it is advised to take Calnez-D3 800IU Drop two hours before or four hours after taking antacids.
Fatty fish (tuna, trout, salmon, and mackerel), fish liver oil, egg yolk, and beef liver are good sources of Vitamin D. Vitamin D-fortified foods like plant milk, dairy, juices, and breakfast cereals are also good sources of Vitamin D.
Not getting enough vitamin D through diet/food, limited exposure to sunlight, organs such as the liver or kidney not being able to convert vitamin D to its active form in the body, taking medicines which interfere with the absorption of vitamin D may cause a deficiency of vitamin D.
People who are allergic to vitamin D, have hypervitaminosis D (high levels of vitamin D), hypercalcemia (high levels of calcium) or malabsorption syndrome should not take Calnez-D3 800IU Drop.
Taking too much of Calnez-D3 800IU Drop may cause overdose and hypervitaminosis D (high levels of vitamin D). The symptoms of overdose include loss of appetite, confusion, nausea, body pains, urinating more or less than usual, thirst, irregular heartbeats or stiffness. If you suspect you have taken an overdose or notice signs of overdose, please consult a doctor immediately.
The amount of Vitamin D3 needed depends on age. The average daily recommended amount, as per NIH, is Birth-12 months: 400IU 1-13 years: 600IU 14-18 years: 600IU 19-70 years: 600IU 71 years and older: 800IU Pregnant and breastfeeding women: 600IU
Vitamin D deficiency may cause rickets (bones become soft, weak and deformed) in children and osteomalacia (a bone disorder that causes muscle weakness and bone pain) in adults.
Vitamin D is essential for various body functions. It maintains bone health by regulating the amount of calcium and phosphate in the body. Vitamin D supports muscle and nerve health and enhances the immune system.
Yes, Calnez-D3 800IU Drop is a health supplement used to treat vitamin D deficiency.
It can be harmful if you take too much. Avoid exceeding the recommended dose and take it as advised by the doctor.
It is probably safe to use Calnez-D3 800IU Drop during pregnancy. However, consult a doctor if you are pregnant or planning for pregnancy.
Usually, vitamin D is to be taken once a week. How often you need to take Calnez-D3 800IU Drop depends on the dose and your condition. Please consult the doctor and take it as advised.
Calnez-D3 800IU Drop can be taken at night or in the morning.
Calnez-D3 800IU Drop strengthens bone, muscles, supports immune health, promotes heart health, enhances hair, regulates mood, and provides resistance to infections.
Calnez-D3 800IU Drop should be swallowed as a whole with water; do not crush or chew it.
Regular sun exposure is the natural way to get vitamin D. It is optimal to have sun exposure for 5 to 30 minutes a day, most days a week, without sunscreen. However, if you have low levels of vitamin D supplementation may be required.
Usually, vitamin D supplements require few weeks to enhance the levels of vitamin D in the body. To treat your condition effectively, keep taking Calnez-D3 800IU Drop for the recommended duration.
No, do not take Calnez-D3 800IU Drop if you are allergic to any of its ingredients.
Vitamin D improves bone health, controls infections, enhances immunity, lowers inflammation, and aids various body functions.
In some cases, it may cause side effects like constipation, vomiting, and nausea. These side effects do not require medical attention and gradually resolve over time. If these side effects persist, please consult your doctor immediately.
Other medications can be taken with Calnez-D3 800IU Drop if advised by the doctor. Let the doctor know if you are taking any other medicines particularly antibiotics, cholesterol-lowering medicines, anticonvulsants, thyroid medicines, and medicines used to treat bone loss.
Store Calnez-D3 800IU Drop at room temperature, in a dry place. Keep out of sight and reach of children.

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.

Reference

  1. Electronic Medicines Compendium (EMC). Product Summary of Product Characteristics (SmPC). Cheshire, UK: Datapharm; 2025. [Accessed on 02 Jun. 2026] Check here
  2. MIMS Drug Reference Compendium. Colecalciferol Monograph. Singapore: MIMS; 2025. [Accessed on 02 Jun. 2026] Check here
  3. Drugs.com Clinical Review Team. Cholecalciferol Clinical Drug Monograph. Auckland, NZ: Drugs.com; 2026. [Accessed on 02 Jun. 2026] Check here
  4. Calcitriol injection [Prescribing Information]. 2016. [Accessed on 10 Oct. 2024] Check here
  5. Ema. SmPC. Colecalciferol. [[Accessed on 12.Aug].2020] Check here
  6. NIH.Vitamin D. Factsheet for Health Profesionals. [[Accessed on 12.Aug].2020] Check here
  7. Bikle DD. Vitamin D: Production, Metabolism, and Mechanism of Action. [Updated 2025 Jun 15]. In: Feingold KR, Ahmed SF, Anawalt B, et al., editors. Endotext [Internet]. South Dartmouth (MA): MDText.com, Inc.; 2000-Check here

Country of origin

INDIA

Manufacturer/Marketer address

SCO-4 , GROUND & BASEMENT , SUSHMA SQAURE GAZIPUR , DHAKOLI, Sas Nagar - 140603, Punjab, India
Other Info - CAL2000

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