What is C Complex: Uses, Warnings & Interactions

What is C Complex: Uses, Warnings & Interactions

Updated May 14, 2025 • Published Dec 30, 2020

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C Complex overview

BRAND NAMES:

C-Time w/Rose Hips, Mega-C, One-Gram C, Sunkist Vitamin C, Sunmark Chewable C, Vitamin C with Acerola, Sunkist Vitamin C, Sunmark Chewable C, Vitamin C AvPak, Vitamin C with Acerola, Rite Aid Vitamin C, Vitamin C250

Generic Names:

C Complex

Uses:

Helps patients who do not have enough vitamin C in the body. It is sometimes used to add acidity to the urine.

Therapeutic Classes:

Calcium Supplement, Nutritive Agent, Vitamin Combination, Adult Formula

Forms:

Tablet, Powder, Chewable Tablet, Long Acting Tablet, Long Acting Capsule, Liquid

How it’s taken:

By mouth

What is C Complex used for?

What form(s) does C Complex come in

Tablet
Powder
Chewable Tablet
Long Acting Tablet
Long Acting Capsule
Liquid

What are common C Complex doses?

Bottle 60 Tablets Extended Release

How to take C Complex

Your doctor will tell you how much to take and how often. Always follow the dose instructions on the label if you take this medicine in over-the-counter form.
May be taken with or without food.
Swallow the tablet or capsule whole, do not chew or crush.
Chew the chewable tablet and swallow.
Carefully measure the oral liquid using a marked measuring spoon or medicine cup, or with the dropper that comes with the medicine. This medicine may either be mixed with foods such as cereal and fruit juice, or be dropped into the mouth.
Swallow the tablet or capsule whole, do not chew or crush.
Chew the chewable tablet and swallow.
Your doctor will tell you how much to take and how often. Always follow the dose instructions on the label if you take this medicine in over-the-counter form.
May be taken with or without food.
Carefully measure the oral liquid using a marked measuring spoon or medicine cup, or with the dropper that comes with the medicine. This medicine may either be mixed with foods such as cereal and fruit juice, or be dropped into the mouth.

What to do if you miss a dose of C Complex

Try not to miss any doses; however, it is usually not a problem if you miss one or two doses.
Keep all medicine away from children.

C Complex contraindications

You should not use this medicine if you have had an allergic reaction to ascorbic acid (vitamin C).

C Complex warnings

Check with your doctor before taking vitamin C if you are pregnant, breastfeeding, or have any medical problems.
Ascorbic acid may interfere with tests that measure sugar in the urine of patients with diabetes.

C Complex interactions

Make sure your doctor knows if you are taking a blood thinner, such as Coumadin®.
Ascorbic acid may interfere with tests that measure sugar in the urine of patients with diabetes.

C Complex side effects

Serious Side Effects

Nausea and vomiting, stomach pain, diarrhea

Less Serious Side Effects

Nausea and vomiting, stomach pain, diarrhea