Rejunex CD3 Tablet: Uses, Side Effects & FAQs

Rejunex CD3 is a tablet that tops up calcium, vitamin D3 and three B vitamins: methylcobalamin (B12), L-methylfolate (a form of folic acid) and pyridoxal-5-phosphate (a form of B6). Doctors prescribe it when food alone is not keeping these levels up, usually for weak bones or for tiredness and tingling from a vitamin shortfall. In India, take it only on a doctor's advice. Calcium and vitamin D3 build bone, methylcobalamin and folate help nerves and red blood cells, and vitamin B6 helps nerves carry their signals.

Rejunex CD3 is a doctor-advised supplement tablet that packs calcium, vitamin D3 and three B vitamins into one tablet. The CD3 in the name points to the calcium and vitamin D3 at its base, with B vitamins added for nerve and blood health. Current packs carry the name Rejunex CD3 NF, where NF marks a newer formulation of the same brand.

These are the ingredients printed on a current strip. Check the exact strength on your pack; it may vary between variants.

Other Rejunex products contain different ingredients, so never swap one strip for another without asking your doctor or pharmacist. Check the label on the strip you have.

Think of it as a building project for your bones and nerves, with one job per ingredient:

1. Supply the bricks: Calcium carbonate gives the raw mineral that bones and teeth are made from.
2. Open the gate: Vitamin D3 helps your gut absorb more calcium from meals.
3. Protect the wiring: Methylcobalamin is a form of vitamin B12 that keeps the protective covering on nerves healthy.
4. Carry the signals: Pyridoxal-5-phosphate is a form of vitamin B6, which nerves need to send messages.
5. Renew the cells: L-methylfolate is a form of folic acid, needed to make new red blood cells.

Doctors usually prescribe Rejunex CD3 for:

• Low calcium levels, when diet does not supply enough
• Vitamin D deficiency, which stops your body absorbing calcium properly
• Weak or thinning bones, such as osteoporosis, alongside other treatment
• Low B12, folate or B6, causing tiredness, a sore tongue or tingling hands and feet
• Nerve tingling or numbness, when a blood test shows a vitamin shortfall

It is a supplement, not a painkiller. It does not repair nerves already damaged by diabetes, and it does not replace blood sugar control or a balanced diet.

Using it for nerve damage that a vitamin shortfall did not cause is unlikely to help, and can delay the treatment that would.

1. Swallow whole with a full glass of water. Do not crush, split or chew it.
2. Take it with a meal. Calcium carbonate is absorbed better with food.
3. Take it at the time your doctor advises, and stick to that time so you do not forget.
4. Ask your pharmacist how long a gap your other medicines need. For most it is 1 to 2 hours, but thyroid tablets need 4 hours.
5. Do not add extra calcium tablets or antacids unless your doctor knows.

Your doctor decides how much and how often, based on your age, blood test results and other health conditions. Follow your prescription, not the dose on a friend's strip.

Never increase the dose on your own. Extra calcium and vitamin D do not build bones faster, but they can push blood calcium too high, causing thirst, frequent urination and confusion.

Children need a paediatrician's advice. Do not give an adult tablet to a child.

Do not stop it on your own if your doctor started it for low levels; ask for a repeat blood test before you change anything.

If you think you have taken too many tablets, go to the nearest hospital emergency department straight away and carry the strip or box with you. For an ambulance in India, call 108.

Take the missed dose as soon as you remember. If the next dose is close, skip it and carry on as usual. Never take two tablets to make up for one.

Refilling low vitamin levels takes time; a repeat blood test usually shows the change better than how you feel. If nothing has changed by the end of your course, book a review rather than buying another strip.

Store the strip at room temperature, away from sunlight, heat and damp — not in the bathroom. Keep it out of reach of children and check the expiry date.

Most people take Rejunex CD3 without any trouble. When side effects happen, they are usually mild.

Common and mild:

• Upset stomach or nausea
• Gas or bloating
• Constipation
• Belching
• Dry mouth or a metallic taste
• Loss of appetite
• Headache or sleepiness

Rare but serious (stop the medicine and see a doctor right away):

• Very thirsty, passing a lot of urine, confused or unusually tired
• Numbness, tingling or clumsiness in your hands and feet that keeps getting worse
• Rash, swelling of the face, lips or throat, or trouble breathing

The stomach upset comes from calcium carbonate and is more likely on an empty stomach. Vitamin B6 can cause tingling or numbness in the hands and feet when taken in high doses for months. Tell your doctor if it starts or gets worse, so your dose can be checked.

Do not take Rejunex CD3 if you:

• Are allergic to any ingredient in the tablet
• Have high blood calcium (hypercalcaemia)
• Have too much vitamin D in your body
• Have malabsorption syndrome, where food is poorly absorbed
• Have ever had a bad reaction to vitamin D supplements

Tell your doctor before taking Rejunex CD3 if you:

• Have kidney disease, because your kidneys clear calcium and vitamin D
• Have had kidney stones now or in the past
• Have thyroid disease
• Have liver disease, because your body may struggle to turn vitamin D into the form it can use
• Are pregnant or planning a pregnancy
• Are breastfeeding
• Are over 65

Always tell your doctor about every medicine, supplement or home remedy you are using. Heavy drinking is linked to low vitamin B6, so keep alcohol to a minimum.

A supplement only tops up what is missing. Book a review, or see a doctor quickly, if you have:

• Thirst that will not settle, passing far more urine than usual, or new confusion
• A blood test showing high calcium or high vitamin D
• Pain in your side or lower back, or blood in your urine
• Weak, clumsy hands or trouble with buttons and handwriting

Rejunex CD3 is a calcium, vitamin D3 and B-vitamin tablet for people whose levels are low, most often because of weak bones or a vitamin shortfall. Take it with food and at the time your doctor advises. Gas, bloating and constipation are the usual complaints, and they often settle on their own. It supports treatment; it does not replace it.