Clinical Information
Use exactly as prescribed by your healthcare provider. Your dose and schedule depend on your medical needs and lab results. If you miss a scheduled injection, contact your provider for guidance. Do not double doses or self-adjust without professional advice.
Ascorbic acid is Vitamin C, an essential nutrient that works as an antioxidant. It donates electrons to help neutralize harmful free radicals and is needed to make collagen, a protein that keeps skin, blood vessels, and bones strong. After injection, blood levels peak within 1–2 hours and stay elevated for about 4–6 hours. Patients may notice more energy and faster wound healing over days to weeks as stores build up.
Do not use if you are allergic to ascorbic acid or any ingredient in this product (can cause severe reaction). Do not use if you have a history of kidney stones caused by oxalate (ascorbic acid can raise oxalate levels). Avoid if you have hereditary hemochromatosis or other iron-overload disorders (high Vitamin C increases iron absorption). Not for infants under 6 months unless directed by a pediatric specialist. Tell your provider if you are pregnant or breastfeeding; high doses should be used only when benefits outweigh risks.
High-dose Vitamin C may lessen the effect of blood thinners like warfarin—your provider may check INR more often. It can increase blood levels of aluminum from antacids; separate antacid use by at least 2 hours. May enhance iron absorption from supplements and foods, raising iron levels. Large doses can cause false readings on some blood glucose tests; tell lab personnel you receive Vitamin C injections. Limit alcohol, which stresses the liver and kidneys.
Common (may affect up to 1 in 10 people): mild pain, warmth, or redness at injection site; upset stomach or diarrhea if large IV doses drip too fast. Uncommon (1–10 in 1,000): headache, dizziness, flushing. Rare but serious: allergic reaction (rash, swelling, trouble breathing), kidney stone formation, hemolysis in people with G6PD deficiency. Most minor effects go away within a few hours; seek medical help right away for serious symptoms.
Store refrigerated at 36-46°F (2-8°C). Keep the vial in original carton to protect from light. Do not freeze. After first use, wipe rubber stopper with alcohol before each dose and discard any unused solution 30 days after opening. Keep out of reach of children. Dispose of unused or expired vials through a pharmacy take-back program or place in a sharps container before discarding according to local regulations.
Frequently Asked Questions
Q:How often will I need my Vitamin C injection?
A:Frequency depends on your blood levels and health goals. Some people receive it weekly, others only when labs show low Vitamin C. Follow the schedule your provider sets.
Q:Can I give this injection to myself at home?
A:Only if your provider has trained you and feels it is safe. You must learn clean technique, proper needle disposal, and dose measurement before attempting self-injection.
Q:What should I do if the solution turns yellow or cloudy?
A:Do not use the vial. Vitamin C darkens when it breaks down and may not be safe. Discard the vial and call the pharmacy for a replacement.
Q:Will this interact with my daily multivitamin?
A:A standard multivitamin usually contains low Vitamin C and is not a problem, but tell your provider about all supplements. They may adjust your injection dose to avoid taking too much.
Q:Can high-dose Vitamin C cause kidney stones?
A:Large amounts can raise oxalate in urine, which may lead to stones in people who are prone to them. Drink plenty of water and have your kidney function and urine checked as your provider recommends.
Q:Do I need to change my diet while getting these injections?
A:A balanced diet with fruits and vegetables is still important. Avoid very high-dose over-the-counter Vitamin C tablets unless your provider approves, to prevent excessive intake.
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