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5 Interactions found for:

tizanidine and Adderall
Interactions Summary
  • 3 Major
  • 1 Moderate
  • 1 Minor
  • tizanidine
  • Adderall

Drug Interactions

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

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

Drug and Food Interactions

Moderate
Adderall + Food

The following applies to the ingredients: Amphetamine (found in Adderall)

Using amphetamine together with alcohol can increase the risk of cardiovascular side effects such as increased heart rate, chest pain, or blood pressure changes. You should avoid or limit the use of alcohol while being treated with amphetamine. Let your doctor know if you experience severe or frequent headaches, chest pain, and/or a fast or pounding heartbeat. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

The following applies to the ingredients: Dextroamphetamine (found in Adderall)

Using dextroamphetamine together with alcohol can increase the risk of cardiovascular side effects such as increased heart rate, chest pain, or blood pressure changes. You should avoid or limit the use of alcohol while being treated with dextroamphetamine. Let your doctor know if you experience severe or frequent headaches, chest pain, and/or a fast or pounding heartbeat. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Drug and Pregnancy Interactions

The following applies to the ingredients: Amphetamine (found in Adderall)

Professional Content

Use only if the benefit justifies the risk to the fetus

US FDA pregnancy category: Not Assigned

Risk Summary: There are insufficient data to determine a drug-associated risk of major congenital malformations or miscarriages; long-term neurochemical and behavioral effects have been reported in published animal developmental studies using clinically relevant doses of amphetamine.

Comments:
-Infants born to mothers dependent on amphetamines have an increased risk of premature delivery and low birth weight; these infants should be monitored for feeding difficulties, irritability, agitation, excessive drowsiness and other withdrawal symptoms.
-Pregnancy exposure registry monitors pregnancy outcomes in women exposed to psychostimulants during pregnancy; National Pregnancy Registry for Psychostimulants 1-866-961-2388 or online at https://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/othermedications/

In animal studies, no effects on morphological development were seen in rats and rabbits exposed to doses 2 and 12 times the maximum recommended human dose (MRHD) during organogenesis, respectively. However, long-term neurochemical and behavioral effects (e.g., learning and memory deficits, altered locomotor activity, changes in sexual function) have been reported in published animal development studies at clinically relevant doses. Fetal malformations and death as well as severe maternal toxicity were observed in mice following parenteral administration of d-amphetamine doses approximately 10 times the MRHD. Adverse pregnancy outcomes, including premature delivery and low birth weight, have been seen in infants born to mother's dependent on amphetamines. This drug and others within the amphetamine class may cause vasoconstriction of placental blood vessels and increase the risk for intrauterine growth restriction. There are no controlled human data in pregnancy.

US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D and X are being phased out.

References

  1. United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):
  2. "Product Information. Evekeo (amphetamine)." Arbor Pharmaceuticals (2015):
  3. "Product Information. Dyanavel XR (amphetamine)." Tris Pharma Inc (2015):
  4. "Product Information. Adzenys ER (amphetamine)." Neos Therepeautics, Inc (2019):
  5. "Product Information. Adzenys XR-ODT (amphetamine)." Neos Therepeautics, Inc (2019):

The following applies to the ingredients: Dextroamphetamine (found in Adderall)

Professional Content

UK: Use is contraindicated during pregnancy.
AU and US: Use is not recommended during pregnancy.

AU TGA pregnancy category: B3
US FDA pregnancy category: C

Comments:
-Infants born to mothers dependent on amphetamine drugs have an increased risk of premature delivery and low birth weight, and may experience withdrawal symptoms including dysphoria, agitation, hyperexcitabilitiy, and significant lassitude.
-Females of reproductive potential should be advised to avoid pregnancy during treatment.

Although there are no controlled data in human pregnancy, the use of amphetamine drugs during early pregnancy has been associated with an increased risk of congenital malformations. Additionally, there has been one report of severe congenital bony deformity, tracheoesophageal fistula, and anal atresia (Vater association) in an infant whose mother took this drug with lovastatin during the first trimester of pregnancy.

Some animal studies have revealed evidence of embryotoxicity, teratogenicity, and reproductive toxicity. Animal data also showed developmental delays, behavioral sensitization, and increased motor activity in animal offspring due to prenatal exposures at dose levels comparable to human therapeutic dose levels.

AU TGA pregnancy category B3: Drugs which have been taken by only a limited number of pregnant women and women of childbearing age, without an increase in the frequency of malformation or other direct or indirect harmful effects on the human fetus having been observed. Studies in animals have shown evidence of an increased occurrence of fetal damage, the significance of which is considered uncertain in humans.

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. Dexedrine (dextroamphetamine)." SmithKline Beecham PROD (2001):
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0

The following applies to the ingredients: Amphetamine-Dextroamphetamine (found in Adderall)

Professional Content

Use is recommended during pregnancy only if the potential benefit justifies the possible risk to the fetus.

US FDA pregnancy category: C

Comments: Infants born to mothers dependent on amphetamines have an increased risk of premature delivery and low birth weight, and may experience withdrawal symptoms (e.g., dysphoria, agitation and significant lassitude).

In the enantiomer ratio present in this drug, some animal studies show amphetamine had no apparent effects on embryofetal morphological development or survival while other data offspring effects (e.g., decreased survival, increased locomotor activity, reduced body weight) in addition to maternal effects (e.g., hyperactivity and decreased weight gain). Animal studies also reveal long-term neurochemical and behavioral effects with exposure to amphetamine (d- or d-,l-isomers) at doses similar to those used clinically. There has been one report of severe congenital bony deformity, trachea-esophageal fistula, and anal atresia (vater association) in an infant whose mother took dextroamphetamine sulfate with lovastatin during the first trimester of pregnancy. There are no reported effects on fertility.

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. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc PROD (2001):
  2. "Product Information. Adderall XR (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc (2001):

The following applies to the ingredients: Tizanidine

Professional Content

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: Amphetamine (found in Adderall)

Professional Content

Not recommended

Excreted into human milk: Yes

Comments:
-The effect on the neurological development of the breastfed infant has not been well studied.
-Large dosages might interfere with milk production, especially in women whose lactation is not well established.

Based on limited data, this drug is estimated to be present in human milk at approximately 2% to 13.8% of the maternal weight-adjusted dose (milk/plasma ratio 1.9 to 7.5). This drug does not appear to effect breastfeeding infants adversely in doses prescribed for medical indications, however, the effects on neurological development have not been well studied. Manufacturers recommend against breastfeeding while taking this drug due to the potential for serious adverse reactions in nursing infants. Breastfeeding should be avoided in women who are actively abusing amphetamines.

References

  1. United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):
  2. "Product Information. Evekeo (amphetamine)." Arbor Pharmaceuticals (2015):
  3. "Product Information. Dyanavel XR (amphetamine)." Tris Pharma Inc (2015):
  4. "Product Information. Adzenys ER (amphetamine)." Neos Therepeautics, Inc (2019):
  5. "Product Information. Adzenys XR-ODT (amphetamine)." Neos Therepeautics, Inc (2019):
  6. "Product Information. Evekeo ODT (amphetamine)." Arbor Pharmaceuticals (2021):

The following applies to the ingredients: Dextroamphetamine (found in Adderall)

Professional Content

UK: Use is contraindicated during breastfeeding.
AU and US: Breastfeeding is not recommended during treatment.

Excreted into human milk: Yes

Comments:
-The effect of this drug in milk on the neurological development of a breastfed infant has not been well studied.
-Large dosages of this drug might interfere with milk production, especially in women whose lactation is not well established.

-Blood levels of this drug in 3 breastfed infants were up to 14% of the maternal plasma level.
-Four breastfed infants whose mothers took an average dose of 18 mg per day of this drug had no adverse effects and showed normal progress with weights between the 10th and 75th percentiles.
-In a study of 20 postpartum women, this drug reduced serum prolactin by 25% to 32% (7.5 mg IV dose) and 30% to 37% (15 mg IV dose). Another study showed a 20 mg oral dose produced a sustained suppression of serum prolactin by 40%.

References

  1. "Product Information. Dexedrine (dextroamphetamine)." SmithKline Beecham PROD (2001):
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0
  4. United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):

The following applies to the ingredients: Amphetamine-Dextroamphetamine (found in Adderall)

Professional Content

Breastfeeding is not recommended during treatment.

Excreted into human milk: Yes

Comments:
-The effect of amphetamine and dextroamphetamine in milk on the neurological development of a breastfed infant has not been well studied.
-Large dosages of amphetamine and/or dextroamphetamine might interfere with milk production, especially in women whose lactation is not well established.

Level 2:
-The urinary excretion in 2 breastfed infants whose mothers took amphetamine 20 to 35 mg/day ranged from 0.1% to 2.1% of the mothers' excretion; these infants showed no signs of abnormal development.
-Dextroamphetamine blood levels in 3 breastfed infants were up to 14% of the maternal plasma level.
-Four breastfed infants whose mothers took an average dose of 18 mg/day dextroamphetamine had normal progress, no adverse effects, and weights between the 10th and 75th percentiles.
-In a study of 20 postpartum women, dextroamphetamine reduced serum prolactin by 25% to 32% (7.5 mg IV dose) and 30% to 37% (15 mg IV dose). Another study showed a 20 mg oral dose of dextroamphetamine produced a sustained suppression of serum prolactin by 40%.

References

  1. "Product Information. Adderall (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc PROD (2001):
  2. "Product Information. Adderall XR (amphetamine-dextroamphetamine)." Shire Richwood Pharmaceutical Company Inc (2001):
  3. United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):

The following applies to the ingredients: Tizanidine

Professional Content

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

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: Professional 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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