What is the recommended dose of Anaspaz (hyoscyamine) for patients ≥ 12 years and for children 2–12 years?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: October 8, 2026 • View editorial policy

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.

Anaspaz (Hyoscyamine) Dosing

The FDA-approved dosing for Anaspaz is not explicitly provided in the available evidence, which consists primarily of research studies using various hyoscyamine doses for specific procedures rather than standard therapeutic dosing guidelines.

Critical Gap in Evidence

The provided evidence does not contain the FDA drug label for Anaspaz (hyoscyamine sulfate) with standard dosing recommendations. The drug label excerpts provided 1 are for chlordiazepoxide/clidinium bromide combination capsules, not for Anaspaz/hyoscyamine.

Dosing Information from Research Studies

While not representing FDA-approved standard dosing, the research evidence shows these doses were used in clinical trials:

Adults (≥18 years):

  • Sublingual: 0.125 mg as a single dose 2, 3, 4
  • Oral: 0.25 mg 5
  • Intravenous: 0.25-0.5 mg 6, 5

Pediatric Dosing:

No pediatric dosing information for Anaspaz is available in the provided evidence. The pediatric guidelines 7 discuss various emergency medications but do not include hyoscyamine/Anaspaz dosing for children ages 2-12 years or adolescents ≥12 years.

Important Clinical Context

The research studies [2-4] evaluated hyoscyamine for specific indications (ureteral colic, colonoscopy, sigmoidoscopy) with mixed efficacy results. These were investigational doses, not standard therapeutic recommendations.

Recommendation

You must consult the actual FDA-approved Anaspaz drug label or a current drug reference (e.g., Lexicomp, Micromedex) for accurate age-specific dosing, as this critical information is not present in the provided evidence.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.