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G Nano 2000 IU Tablet 10's used to prevent/treat vitamin D deficiency. It contains Cholecalciferol, which increases vitamin D levels in the body. In some cases, this medicine may cause side effects such as vomiting, nausea, constipation, and increased calcium levels in blood and urine. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.

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Written By Veda Maddala , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
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More about the Product

Composition :

CHOLECALCIFEROL-2000IU

Manufacturer/Marketer :

Geriatric Foundation

Consume Type :

Oral

Expires on or after :

Dec-28

Return Policy :

Not Returnable

About G Nano 2000 IU Tablet 10's

G Nano 2000 IU Tablet 10's is a supplement suggested to treat and prevent vitamin D deficiency. It helps your body absorb vital minerals to support bone health and manage conditions like weak or brittle bones. Your doctor may recommend this medicine if your daily dietary intake is insufficient or if your body requires extra nutritional support.

This medicine is typically taken once daily or once weekly, and it is highly beneficial to take it consistently at the same time. For optimal absorption, you should take G Nano 2000 IU Tablet 10's with a meal that contains healthy fats. Combining this treatment with a balanced diet rich in calcium and regular outdoor activity will significantly improve your overall results.

While taking G Nano 2000 IU Tablet 10's, most people experience no side effects, but some may experience mild stomach upset or constipation. If you notice severe symptoms like persistent nausea, vomiting, or extreme tiredness, you must contact your doctor immediately. These symptoms could indicate that your calcium levels are too high, which requires professional medical evaluation.

Before you begin taking G Nano 2000 IU Tablet 10's, talk to your doctor if you have kidney problems, a history of kidney stones, or heart disease. Do not take this medicine if you already have high levels of calcium or vitamin D in your blood. Your doctor will help determine if this treatment is safe for your specific health profile.

Certain medicines, such as weight-loss drugs or some water pills, can affect how G Nano 2000 IU Tablet 10's works in your body. It is also important to limit alcohol use while taking this supplement, as it can interfere with how your body absorbs nutrients. If you are pregnant, breastfeeding, or an elderly individual, consult your healthcare provider to ensure you are using the correct amount safely.

Uses of G Nano 2000 IU Tablet 10's

Your doctor may prescribe this medicine to treat several conditions, including:

  • Vitamin D deficiency: G Nano 2000 IU Tablet 10's helps restore healthy levels of vitamin D in individuals who do not get enough natural sunlight or dietary nutrients.
  • Osteoporosis: This medicine is used alongside other treatments to help prevent and treat weak, brittle bones by improving how your body absorbs calcium.
  • Hypoparathyroidism: It helps manage low levels of parathyroid hormone, maintaining the proper balance of calcium and phosphorus in your blood.
  • Bone disorders: It supports the management of conditions like osteomalacia or rickets, which cause softening of the bone structure.

Key Benefits

G Nano 2000 IU Tablet 10's helps treat and prevent vitamin D deficiency, supporting strong bones, healthy muscles, and overall well-being. Maintaining adequate vitamin D levels is essential for proper calcium absorption and normal body function. Key benefits include:

  • Supports Strong Bones: This medication improves calcium absorption, helping build and maintain strong bones and reducing the risk of fractures and bone disorders caused by vitamin D deficiency.
  • Promotes Healthy Muscle Function: By correcting vitamin D deficiency, this medication helps support normal muscle strength and function, which may reduce muscle weakness and improve mobility.
  • Supports Overall Health: Restoring healthy vitamin D levels supports normal immune function and overall well-being, helping your body function optimally and reducing symptoms associated with vitamin D deficiency.

Directions for Use

  • G Nano 2000 IU Tablet 10's can be taken with food.
  • Follow your doctor's instructions on the dosage and timing of this medication.
  • Swallow G Nano 2000 IU Tablet 10's as a whole with a glass of water.
  • Do not crush, break, or chew it.

How G Nano 2000 IU Tablet 10's Works

G Nano 2000 IU Tablet 10's contains choleacalciferol. Once you swallow G Nano 2000 IU Tablet 10's, the active ingredient is processed by your liver and kidneys into its active form, known as calcitriol. This active form acts like a key that unlocks your body’s ability to absorb calcium and phosphorus from the food you eat. Without enough active vitamin D, your body cannot absorb calcium properly, forcing it to steal calcium from your bones, which weakens them over time. By maintaining steady levels, G Nano 2000 IU Tablet 10's ensures your bones remain dense, strong, and healthy.
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Alcohol

Caution

Drinking alcohol can affect calcium absorption; hence, it is advised to limit the alcohol intake while using G Nano 2000 IU Tablet 10's.

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Pregnancy

Consult your doctor

Use higher doses of G Nano 2000 IU Tablet 10's during pregnancy than the daily dietary allowance only when the doctor advises. Your physician will weigh the potential risks and benefits before recommending G Nano 2000 IU Tablet 10's.

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Breast Feeding

Consult your doctor

Consult your physician before taking G Nano 2000 IU Tablet 10's if you are breastfeeding. G Nano 2000 IU Tablet 10's can pass into the breast milk. If G Nano 2000 IU Tablet 10's is used during breastfeeding, please monitor the mother and the infant's serum calcium levels.

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Driving

Consult your doctor

Do not drive or operate machinery if you experience dizziness while using G Nano 2000 IU Tablet 10's. Please consult your doctor if you experience any dizziness.

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Liver

Consult your doctor

Before taking G Nano 2000 IU Tablet 10's, let your physician know if you have any history of liver disease. Hepatic impairment/liver disease can alter certain Vitamin D forms' metabolic and therapeutic activity.

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Kidney

Consult your doctor

It is advised to seek physician advice before starting G Nano 2000 IU Tablet 10's if you have kidney diseases like kidney stones or undergoing dialysis. Caution should be taken in dialysis patients to maintain adequate phosphorus levels and avoid ectopic calcification (calcium deposition).

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Children

Caution

The physician will suggest the dosage of G Nano 2000 IU Tablet 10's based on the child's age and weight.

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Heart

Safe if suggested

G Nano 2000 IU Tablet 10's is safe for use in heart patients if recommended by the physician.

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Geriatrics

Safe if suggested

G Nano 2000 IU Tablet 10's is generally safe for use in elderly patients if recommended by the physician.

What if I have taken an overdose of G Nano 2000 IU Tablet 10's

If you suspect an overdose, or if someone has accidentally swallowed too many tablets or capsules, seek immediate medical attention or contact a poison control centre right away. Signs of an overdose may include severe weakness, confusion, vomiting, or extreme thirst.

Diet & Lifestyle Advise

  • Eat calcium-rich foods: To help G Nano 2000 IU Tablet 10's work effectively, include dairy products, leafy green vegetables, and fortified foods in your daily diet.
  • Get safe sun exposure: Spend 10 to 15 minutes in midday sunlight a few times a week, if safe for your skin, to help your body produce natural vitamin D.
  • Engage in weight-bearing exercise: Activities like walking, jogging, or light weight training help stimulate bone growth and preserve bone density.
  • Limit caffeine and sodas: High intake of caffeine or carbonated beverages can interfere with how your body processes and stores calcium.
  • Avoid smoking and limit alcohol: Both tobacco and excess alcohol weaken bone structure and reduce the body's ability to absorb vitamins.
health query

Have a query?

How Soon It Starts Working

The time required for G Nano 2000 IU Tablet 10's to start to work: The time required for G Nano 2000 IU Tablet 10's to show its action is unknown. 

The time for which the effects of G Nano 2000 IU Tablet 10's last: The duration of action for G Nano 2000 IU Tablet 10's is clinically unknown.

Storage

• SStore G Nano 2000 IU Tablet 10's tablets or capsules at room temperature, ideally between 15°C and 30°C (59°F to 86°F). • Keep the bottle tightly closed and store it in a dry place away from direct sunlight, high heat, and moisture.

What if you forget to take G Nano 2000 IU Tablet 10's

If you miss a dose of G Nano 2000 IU Tablet 10's, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed one and return to your regular schedule. Do not take a double dose to make up for a missed one. If you take this medicine on a weekly schedule, talk to your doctor or pharmacist for specific guidance on missed doses.

Drug Warnings

  • Check other supplements: Read the labels of multivitamins, calcium supplements, and fortified products to avoid taking more vitamin D than recommended.
  • Attend regular blood tests: Have your vitamin D and calcium levels checked as advised by your doctor, especially if you are taking high doses or long-term treatment.
  • Stay well hydrated: Drink plenty of water throughout the day, particularly if you are taking high-dose vitamin D, to support normal kidney function.
  • Take only the suggested dose: Do not take more than the recommended amount of G Nano 2000 IU Tablet 10's, as excessive vitamin D can lead to high calcium levels and other health problems.
  • Inform your healthcare provider: Tell your doctor, dentist, or pharmacist that you are taking G Nano 2000 IU Tablet 10's before starting any new medicines or undergoing medical or dental procedures.

Drug-Drug Interactions

verifiedApollotooltip

Inform your doctor about all the medicines you are using before using this, as they may interact with G Nano 2000 IU Tablet 10's and affect your treatment.

  • Weight-loss medications (like orlistat) or cholesterol-lowering drugs (like cholestyramine): May lower the absorption of G Nano 2000 IU Tablet 10's in your stomach. It is best to take these medications several hours apart.
  • Thiazide diuretics (water pills): May increase the risk of developing too much calcium in your blood when taken alongside G Nano 2000 IU Tablet 10's
  • Seizure medicines (like phenytoin or phenobarbital): Can speed up how your liver processes vitamin D, potentially reducing its effectiveness
  • Cardiac glycosides (like digoxin): High calcium levels caused by excess vitamin D can increase the risk of serious heart rhythm issues when taking these medicines.
ColecalciferolCalcitriol
Severe
ColecalciferolDihydrotachysterol
Severe

Drug-Drug Interactions

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ColecalciferolCalcitriol
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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.
ColecalciferolDihydrotachysterol
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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.
ColecalciferolAluminium hydroxide
Severe
How does the drug interact with G Nano 2000 IU Tablet:
The combined use of aluminum hydroxide with G Nano 2000 IU Tablet may increase the risk of toxicity.

How to manage the interaction:
Co-administration of G Nano 2000 IU Tablet 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.
ColecalciferolCalcifediol
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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.
ColecalciferolSucralfate
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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.
ColecalciferolErgocalciferol
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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.
ColecalciferolDoxercalciferol
Severe
How does the drug interact with G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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 G Nano 2000 IU Tablet:
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 G Nano 2000 IU Tablet 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.

Drug-Food Interactions

verifiedApollotooltip
  • Mineral oil: Taking mineral oil can block your intestines from properly absorbing G Nano 2000 IU Tablet 10's.
  • High-fat meals: Consuming G Nano 2000 IU Tablet 10's with a meal containing healthy fats increases its absorption rate significantly.
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

G Nano 2000 IU Tablet 10's is used to treat Vitamin D deficiency. G Nano 2000 IU Tablet 10's effectively treats various conditions in the body like Vitamin D deficiency, osteoporosis (weak and brittle bones), and osteomalacia (softening or deforming of bones due to lack of calcium).
G Nano 2000 IU Tablet 10's contains Cholecalciferol, a form of vitamin D. Cholecalciferol (vitamin D3) is a supplement that promotes the absorption of calcium, phosphates and Vitamin A from different organs and helps maintain overall health.
G Nano 2000 IU Tablet 10's may cause common side effects like constipation, increased blood calcium levels, increased calcium levels in urine, 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.
G Nano 2000 IU Tablet 10's should be used with caution in conditions like hypercalcemia, liver problems, kidney problems, heart problems, hypervitaminosis, kidney stones, phenylketonuria and diabetes.
G Nano 2000 IU Tablet 10's is used to increase low calcium levels in the body. Hence, it is not advised to use G Nano 2000 IU Tablet 10's during hypercalcemia since it causes an overdose of calcium, leading to kidney stones and other effects.
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.
While you can take it without food, taking G Nano 2000 IU Tablet 10's with a meal that contains healthy fats (like milk, yoghurt, or olive oil) significantly improves how well your body absorbs it. Talk to your doctor or pharmacist if you have questions about your specific routine.
It begins working in your body within hours, but it may take several weeks of consistent use before your blood tests show normal vitamin D levels. Talk to your doctor to monitor your progress.
Yes, maintaining adequate vitamin D levels is crucial during pregnancy, but your dosage must be carefully managed by your healthcare provider. Talk to your doctor to find the safe amount for you and your baby.
Some people take it daily, while others may take a higher dose once a week. Your schedule depends entirely on your specific health needs. Talk to your doctor to determine the best schedule for you.
Taking too much can lead to high calcium levels, which causes symptoms like severe nausea, vomiting, muscle weakness, confusion, and extreme thirst. If you experience these, seek medical attention immediately. Talk to your doctor if you suspect an overdose.
G Nano 2000 IU Tablet 10's helps your body absorb calcium, so having enough calcium in your diet is important. However, do not start a calcium supplement without consulting your healthcare provider first. Talk to your doctor to see if you need both.
Taking high doses for long periods can increase calcium in your urine, which may raise the risk of kidney stones. Staying well-hydrated helps lower this risk. Talk to your doctor if you have a history of kidney stones.
Heavy alcohol use can interfere with how your liver and kidneys activate vitamin D and how your body absorbs calcium. It is best to limit your alcohol intake while on this treatment. Talk to your doctor for personalised advice.

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. Nair, Rathish, and Arun Maseeh. Vitamin D: The "sunshine" vitamin. National library of Medicine, National center for Biotechnology information. Pubmed Central. 2012 [Accessed on 21st June 2022]Check here
  5. Labialfarma. Electronics Medicines Compendium (EMC). [Revised in August 2021] [Accessed on 21st June 2022]Check here
  6. Drugs A. [Accessed on 02 Jun. 2026]Check here
  7. Pharma Patent Kft. Health Products Regulatory Authority (HPRA) [Revised in December 2020] [Accessed on 21st June 2022]Check here

Country of origin

India

Manufacturer/Marketer address

16, Kanaklatha Path, G S Road, Rukminigaon, Guwahati, Assam-781022
Other Info - GNA0014

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