Acyclovir — Nucleoside analog antiviral (herpesvirus). Study the mechanism, listed uses and warnings from the US label on one sourced card.
Generic name
Acyclovir
Class
Nucleoside analog antiviral (herpesvirus)
Mechanism
Purine nucleoside analog activated by viral thymidine kinase; the triphosphate inhibits herpesvirus DNA polymerase.
Used for
Acute herpes zoster (shingles); Initial genital herpes episodes and management of recurrent episodes; Chickenpox (varicella)
Common side effects
Nausea; Vomiting; Diarrhea; Headache; Malaise
Warnings
Hypersensitivity to acyclovir or valacyclovir
Interactions
Probenecid
Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.
Label date: 20260626 · For learning, not clinical decisions. US label and brand information; always consult the current source.
Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.
Mechanism: Interferes with bacterial cell-wall formation, killing susceptible organisms while they are actively multiplying.
On both cards: Common side effects — Nausea; Vomiting; Diarrhea · Interactions — Probenecid
Only on the Amoxicillin card: Used for — Ear, nose and throat infections caused by the specified susceptible beta-lactamase-negative bacteria; Genitourinary infections caused by the specified susceptible beta-lactamase-negative bacteria; Skin and skin-structure infections caused by the specified susceptible beta-lactamase-negative bacteria; Lower respiratory infections caused by the specified susceptible beta-lactamase-negative bacteria · Common side effects — Rash · Warnings — Anaphylactic reactions; Severe cutaneous adverse reactions; C. difficile-associated diarrhea · Interactions — Oral anticoagulants; Allopurinol
Mechanism: Disrupts bacterial cell-wall synthesis, producing a bactericidal effect against susceptible organisms.
On both cards: Common side effects — Nausea; Vomiting; Diarrhea · Interactions — Probenecid
Only on the Cephalexin card: Used for — Respiratory infections caused by the specified susceptible bacteria; Otitis media caused by the specified susceptible bacteria; Skin and skin-structure infections caused by the specified susceptible bacteria; Bone or genitourinary infections caused by the specified susceptible bacteria · Common side effects — Dyspepsia; Abdominal pain · Warnings — Serious hypersensitivity (anaphylactic) reactions; C. difficile-associated diarrhea; Seizure potential · Interactions — Metformin
On both cards: Common side effects — Nausea; Diarrhea; Headache · Interactions — Probenecid
Only on the Cefdinir card: Used for — Mild-to-moderate community-acquired pneumonia due to specified susceptible bacteria in adults and adolescents; Acute exacerbations of chronic bronchitis due to specified susceptible bacteria in adults and adolescents; Acute maxillary sinusitis due to specified susceptible bacteria; pediatric use is addressed in the source-specific dosing section; Streptococcus pyogenes pharyngitis or tonsillitis in the adult/adolescent and pediatric populations specified by the label · Common side effects — Vaginal moniliasis; Abdominal pain · Warnings — Cephalosporin hypersensitivity is a contraindication; serious cross-allergic reactions can occur; C. difficile-associated diarrhea may progress to severe or fatal colitis · Interactions — Aluminum / magnesium antacids; Iron supplements
An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.
Capsera