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4 Interactions found for:

tizanidine and Vitamin C
Interactions Summary
  • 1 Major
  • 0 Moderate
  • 3 Minor
  • tizanidine
  • Vitamin C

Drug Interactions

No drug interactions were found for selected drugs: tizanidine, Vitamin C.

This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Drug and Food Interactions

No food interactions were found for selected drugs: tizanidine, Vitamin C.

This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Drug and Pregnancy Interactions

The following applies to the ingredients: Ascorbic Acid (found in Vitamin C)

Ascorbic acid has been assigned to pregnancy category A by the FDA when used in doses that are advocated by the FDA. Doses exceeding the recommended dietary allowance (RDA) have been assigned to pregnancy category C. Animal studies have not been reported. There are no controlled data in human pregnancy. Ascorbic acid is only recommended for use during pregnancy when benefit outweighs risk.

High doses of ascorbic acid taken during pregnancy have been reported to cause conditional scurvy in infants following birth.

References

  1. "Product Information. Cemill 500 (ascorbic acid)." Abbott Pharmaceutical PROD
  2. Briggs GG, Freeman RK, Yaffe SJ.. "Drugs in Pregnancy and Lactation." Philadelphia, PA: Lippincott Williams & Wilkins (2002):

The following applies to the ingredients: Tizanidine

Benefit should outweigh risk

US FDA pregnancy category: C

Teratogenicity was not shown in animal studies in rats and rabbits. At doses up to 8 times the maximum recommended human dose, increased gestation duration was observed in rats. Pre and prenatal and postnatal pup loss and developmental retardation occurred in rats and rabbits and post-implantation loss was increased in rabbits at doses of 1 mg/kg or more. There are no controlled studies in pregnant women.

US FDA pregnancy category C: Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.

References

  1. "Product Information. Zanaflex (tizanidine)." Acorda Therapeutics PROD (2001):

Drug and Breastfeeding Interactions

The following applies to the ingredients: Tizanidine

Safety has not been established

Excreted into human milk: Unknown
Excreted into animal milk: Yes

Comments: If used, monitor infant for toxicity such as sedation, hypotension, and hallucinations.

As a lipid soluble drug, it might be expected to pass into breast milk.

References

  1. "Product Information. Zanaflex (tizanidine)." Acorda Therapeutics PROD (2001):
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

The following applies to the ingredients: Ascorbic Acid (found in Vitamin C)

Ascorbic acid is excreted into human breast milk. The effects in the nursing infant are unknown. The manufacturer recommends that caution be used when administering ascorbic acid to nursing women.

References

  1. "Product Information. Cemill 500 (ascorbic acid)." Abbott Pharmaceutical PROD

Therapeutic Duplication Warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

Switch to: Consumer Interactions

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

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