Dymox Composition
Dymox contains amoxicillin as its active ingredient, a semisynthetic aminopenicillin β-lactam antibiotic. 1
Active Pharmaceutical Ingredient
Chemical composition: Amoxicillin is chemically designated as (2S,5R,6R)-6-[(R)-(-)-2-amino-2-(p-hydroxyphenyl)acetamido]-3-3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid trihydrate 1
Molecular formula: C₁₆H₁₉N₃O₅S·3H₂O with a molecular weight of 419.45 1
Drug class: Semisynthetic penicillin analog of ampicillin with broad-spectrum bactericidal activity against many Gram-positive and Gram-negative microorganisms 1, 2
Available Formulations
Oral suspension formulations (when reconstituted):
125 mg/5 mL suspension: Contains 125 mg amoxicillin as trihydrate per 5 mL, with 0.11 mEq (2.51 mg) sodium per 5 mL 1
250 mg/5 mL suspension: Contains 250 mg amoxicillin as trihydrate per 5 mL, with 0.15 mEq (3.36 mg) sodium per 5 mL 1
Inactive Ingredients
The oral suspension formulations contain the following inactive excipients 1:
- Microcrystalline cellulose
- Carboxymethylcellulose sodium
- Sucrose
- Colloidal silicon dioxide
- Sodium citrate
- Sodium propionate
- Artificial cream flavor
- FD&C Red #40
- FD&C Yellow #6
Mechanism of Action
Bactericidal activity: Amoxicillin inhibits bacterial cell wall synthesis, leading to bacterial autolysis 3, 1
Antimicrobial spectrum: Active against Gram-positive cocci (including Streptococcus pneumoniae, Streptococcus pyogenes, and methicillin-sensitive Staphylococcus aureus) and select Gram-negative organisms (including Haemophilus influenzae, Escherichia coli, and Proteus mirabilis) 2, 4
β-lactamase susceptibility: Amoxicillin alone is inactivated by β-lactamase-producing bacteria; combination with clavulanic acid (as in amoxicillin-clavulanate, not Dymox) extends activity against β-lactamase producers 3, 5