What is the dosage and treatment duration for Veetid (sulfamethoxazole and trimethoprim)?

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: November 25, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

Veetid Dosage and Treatment Duration

Critical Clarification

Veetid is penicillin V potassium, NOT sulfamethoxazole-trimethoprim (Bactrim/Septra). The evidence provided addresses trimethoprim-sulfamethoxazole (TMP-SMZ), which is an entirely different antibiotic class. Veetid (penicillin V) is a beta-lactam antibiotic used primarily for streptococcal infections, while TMP-SMZ is a sulfonamide-diaminopyrimidine combination used for different indications.

Standard Veetid (Penicillin V) Dosing

Based on general medical knowledge, since no Veetid-specific evidence was provided:

Adult Dosing

  • Streptococcal pharyngitis: 250-500 mg orally 2-4 times daily for 10 days
  • Mild to moderate infections: 250-500 mg every 6-8 hours
  • Severe infections: Up to 500 mg every 6 hours

Pediatric Dosing

  • Children: 25-50 mg/kg/day divided into 3-4 doses
  • Streptococcal pharyngitis: Must complete full 10-day course to prevent rheumatic fever

Duration Considerations

  • Streptococcal infections: Always 10 days minimum to prevent complications
  • Other infections: Typically 7-10 days depending on clinical response
  • Prophylaxis (rheumatic fever): Long-term daily dosing may be required

Important Clinical Pearls

  • Take on empty stomach: Penicillin V absorption is reduced by food; administer 1 hour before or 2 hours after meals
  • Complete full course: Even if symptoms resolve, completing the prescribed duration prevents resistance and complications
  • Allergy screening: Always verify no penicillin allergy history before prescribing

Note: If you intended to ask about trimethoprim-sulfamethoxazole (Bactrim/Septra) dosing, please clarify the specific indication (UTI, PCP prophylaxis, skin infection, etc.) for accurate dosing recommendations.

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.

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.