Hydrovit-b12 depot 500mcg/ml 3 amp
هيدروفيت ب12 ديبو 500مكجم/مل 3 امبولات
Hydroxocobalamin
Unit price: 10.00 EGP
Specifications
Uses & Indications
Hydroxocobalamin is primarily used to treat vitamin B12 deficiency. This deficiency can arise from various conditions such as pernicious anemia, malabsorption syndromes (e.g., Crohn's disease, celiac disease), gastric bypass surgery, or strict vegetarian/vegan diets. It is also used as an antidote for known or suspected cyanide poisoning.
How It Works
Hydroxocobalamin is a naturally occurring form of vitamin B12 (cobalamin). Once administered, it is converted in the body into the active coenzyme forms, methylcobalamin and 5-deoxyadenosylcobalamin. These coenzymes are crucial for several metabolic processes, including DNA synthesis, fatty acid and amino acid metabolism, and the formation of red blood cells and myelin sheath. In cases of cyanide poisoning, hydroxocobalamin directly binds to cyanide ions, forming cyanocobalamin, which is then safely excreted by the kidneys, thereby detoxifying the body.
Dosage & Administration
injectable
Adults: For vitamin B12 deficiency (e.g., pernicious anemia): Initial dose of 1000 micrograms (mcg) intramuscularly (IM) daily or every other day for 1-2 weeks, followed by weekly injections until hematologic parameters normalize. Maintenance dose is typically 1000 mcg IM monthly for life. For cyanide poisoning: Doses are significantly higher and administered intravenously, typically 5 grams IV over 15 minutes, followed by a second dose if needed, under strict medical supervision.
Children: For vitamin B12 deficiency: Initial dose of 100 mcg IM daily for 10-14 days. Maintenance dose is typically 100 mcg IM monthly. For cyanide poisoning: Doses are weight-based and administered intravenously, typically 70 mg/kg (up to 5 grams) IV over 15 minutes, followed by a second dose if needed, under strict medical supervision. Consult a physician for specific pediatric dosing.
Side Effects
- Pain or tenderness at the injection site (up to 10%)
- Mild, transient diarrhea
- Headache
- Dizziness
- Nausea
- Itching or rash
- Red discoloration of urine (due to the drug's natural color, harmless)
Serious Side Effects
- Severe allergic reaction (anaphylaxis), characterized by rash, itching, swelling of the face/tongue/throat, severe dizziness, or trouble breathing (rare)
- Hypokalemia (low potassium levels), particularly during initial treatment of severe megaloblastic anemia
- Congestive heart failure (in patients with pre-existing heart disease, due to rapid blood volume expansion from increased red blood cell production)
- Exacerbation of polycythemia vera
Contraindications
Hydroxocobalamin is contraindicated in individuals with known hypersensitivity to hydroxocobalamin, cobalt, or any component of the formulation. It should be used with caution in patients with Leber's disease (hereditary optic nerve atrophy) due to the potential risk of severe and rapid optic atrophy.
Drug Interactions
Certain medications may interact with hydroxocobalamin. Chloramphenicol may antagonize the hematologic response to vitamin B12 in patients with megaloblastic anemia. Large doses of folic acid can mask vitamin B12 deficiency, potentially leading to neurological damage if the underlying B12 deficiency is not addressed. Other drugs like colchicine, neomycin, para-aminosalicylic acid, H2-receptor antagonists, and proton pump inhibitors may reduce the absorption of oral vitamin B12, but this is less relevant for injectable hydroxocobalamin. Always inform your doctor or pharmacist about all medications and supplements you are taking.
Pregnancy & Lactation
Category: A
Hydroxocobalamin is considered an essential nutrient. When used to treat vitamin B12 deficiency at recommended doses, it is generally considered safe during pregnancy. However, for doses exceeding the recommended daily allowance or for the treatment of cyanide poisoning, the pregnancy category may differ (e.g., Category C). Always consult your doctor before using any medication during pregnancy.
Storage
Store hydroxocobalamin injections at controlled room temperature, typically between 20°C to 25°C (68°F to 77°F). Protect from light. Do not freeze. Keep the medication in its original packaging until use.
Clinical Tips
Patients receiving hydroxocobalamin injections for vitamin B12 deficiency may notice their urine turning red or pink; this is a normal and harmless effect due to the drug's color. Lifelong treatment may be necessary for conditions like pernicious anemia. Regular monitoring of blood counts and vitamin B12 levels is important to ensure effective treatment and adjust dosage if needed. Always complete the full course of treatment as prescribed by your doctor.
Frequently Asked Questions
Why is my urine red after receiving a hydroxocobalamin injection?
It is common and harmless for your urine to turn red or pink after a hydroxocobalamin injection. This is due to the natural color of the medication itself, which is excreted through the kidneys. There is no need for concern.
How often do I need to get hydroxocobalamin injections for B12 deficiency?
The frequency of injections depends on your specific condition and response to treatment. Initially, injections might be daily or weekly, then typically transition to a maintenance dose of once a month for conditions like pernicious anemia. Your doctor will determine the appropriate schedule for you.
Can I stop taking hydroxocobalamin injections once I start feeling better?
No, you should not stop your hydroxocobalamin injections without consulting your doctor. For many conditions, such as pernicious anemia, lifelong treatment is necessary to prevent the recurrence of deficiency and potential neurological damage. Always follow your doctor's prescribed treatment plan.
Are there any foods that can help increase my Vitamin B12 levels?
While hydroxocobalamin injections are used for significant deficiencies, dietary sources of Vitamin B12 include animal products like meat, fish, poultry, eggs, and dairy. Fortified cereals and nutritional yeasts also contain B12. However, dietary intake alone may not be sufficient to correct a severe deficiency or malabsorption issue.
What are the serious side effects of hydroxocobalamin I should watch out for?
Serious side effects are rare but can include severe allergic reactions (rash, swelling, difficulty breathing), very low potassium levels, or worsening heart failure in susceptible individuals. Seek immediate medical attention if you experience any severe or unusual symptoms after your injection.
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Medical Disclaimer
The information provided is for educational purposes only and is not a substitute for professional medical advice. Always consult your doctor or pharmacist before starting or changing any medication.