Amoxicillin Trihydrate
Amoxicillin Trihydrate
What is Amoxicillin Trihydrate?
Amoxicillin trihydrate is the crystalline salt form of amoxicillin — the same widely used penicillin-class antibiotic prescribed for strep throat, ear infections, sinus infections, urinary tract infections, pneumonia, skin infections, and many other common bacterial infections. The trihydrate form is the standard form found in most oral capsule, tablet, and suspension products. Amoxicillin trihydrate is chemically identical to amoxicillin in its clinical effects — it destroys bacteria by blocking cell wall synthesis. Standard adult dosing is 500–875 mg every 8–12 hours for 7–14 days depending on the type and severity of infection. A licensed provider can prescribe amoxicillin through Rx.com telehealth for appropriate bacterial infections. Generic amoxicillin is affordable — often under $10 with an Rx.com coupon.Side Effects
- Nausea
- Diarrhea
- Vomiting
Warnings
- Do not use if allergic to penicillin or cephalosporin antibiotics.
- Prolonged use may result in fungal or bacterial superinfection, including Clostridioides difficile-associated diarrhea.
- Use caution if you have renal (kidney) impairment or are taking other nephrotoxic drugs.
- May decrease the effectiveness of oral contraceptives.
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- Nausea
- Diarrhea
- Vomiting
- Rash
- Allergic reactions including anaphylaxis
- Do not use if allergic to penicillin or cephalosporin antibiotics.
- Prolonged use may result in fungal or bacterial superinfection, including Clostridioides difficile-associated diarrhea.
- Use caution if you have renal (kidney) impairment or are taking other nephrotoxic drugs.
- May decrease the effectiveness of oral contraceptives.
Amoxicillin Trihydrate Coupons & Prices
Amoxicillin Trihydrate
What is Amoxicillin Trihydrate ?
Amoxicillin trihydrate is the crystalline salt form of amoxicillin — the same widely used penicillin-class antibiotic prescribed for strep throat, ear infections, sinus infections, urinary tract infections, pneumonia, skin infections, and many other common bacterial infections. The trihydrate form is the standard form found in most oral capsule, tablet, and suspension products. Amoxicillin trihydrate is chemically identical to amoxicillin in its clinical effects — it destroys bacteria by blocking cell wall synthesis. Standard adult dosing is 500–875 mg every 8–12 hours for 7–14 days depending on the type and severity of infection. A licensed provider can prescribe amoxicillin through Rx.com telehealth for appropriate bacterial infections. Generic amoxicillin is affordable — often under $10 with an Rx.com coupon.
What Is Amoxicillin Trihydrate?
Amoxicillin trihydrate is the pharmaceutical salt form of amoxicillin — the exact chemical form found in the vast majority of amoxicillin capsules, tablets, and oral suspension products on the market. The name "trihydrate" refers to the three water molecules incorporated into the crystalline structure, which improve stability and shelf life. Clinically, amoxicillin trihydrate and amoxicillin base are interchangeable — same drug, same effects, same dosing.
What Does It Treat?
Amoxicillin trihydrate has the same indications as amoxicillin, effective against a broad range of bacterial infections including:
- Strep throat (pharyngitis / tonsillitis)
- Ear infections (otitis media)
- Sinus infections (acute bacterial sinusitis)
- Urinary tract infections (UTIs)
- Community-acquired pneumonia (mild to moderate)
- Skin infections from susceptible gram-positive bacteria
- H. pylori — as part of combination eradication therapy
- Lyme disease — early localized disease
- Dental infections and prophylaxis
How Does It Work?
Amoxicillin trihydrate is converted to free amoxicillin in the body, which then acts as a beta-lactam antibiotic by binding to penicillin-binding proteins (PBPs) on bacterial cell walls. By blocking PBPs, amoxicillin prevents cell wall formation, causing the bacteria to rupture and die. It is bactericidal — actively kills bacteria rather than just slowing their growth.
Dosage Overview
- Adults (mild-moderate infections): 500 mg every 12 hours, or 250 mg every 8 hours
- Adults (severe infections): 875 mg every 12 hours, or 500 mg every 8 hours
- Strep throat: 500 mg twice daily or 1,000 mg once daily for 10 days
- Children: 25–45 mg/kg/day in divided doses (weight-based)
Always complete the full course of antibiotics, even if symptoms improve, to prevent incomplete treatment and antibiotic resistance.
Save on Amoxicillin Trihydrate
Generic amoxicillin trihydrate is among the most affordable antibiotics available. With a free Rx.com coupon, a full 10-day course can cost as little as $5–$12 at major pharmacies.
Get an Antibiotic Prescription Online
Strep throat, ear infections, sinus infections, and many other bacterial infections can now be treated without an in-person visit. See a licensed provider on Rx.com for a fast telehealth consultation and same-day prescription.
Amoxicillin Trihydrate — Articles & Guides
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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.