--- title: Buy Generic Principen (Ampicillin) 250mg/500mg Pills description: Principen (Ampicillin) 250mg/500mg Pills is a penicillin antibiotic for bacterial infections. Order from our secure online pharmacy. type: product language: en url: https://liabilis.com/order-principen-online-en.html availability: in_stock shipping: - type: Standard Airmail price: 10.00 currency: USD area: Worldwide time: 14-21 days - type: Tracked Express price: 30.00 currency: USD area: Worldwide tracking: true time: 5-9 days price_min: 40.84 price_max: 191.89 currency: USD offers: - name: 250mg x 30 pills price: 40.84 - name: 250mg x 60 pills price: 60.79 - name: 250mg x 90 pills price: 82.99 - name: 250mg x 180 pills price: 104.49 - name: 250mg x 360 pills price: 183.99 - name: 500mg x 30 pills price: 42.74 - name: 500mg x 60 pills price: 69.34 - name: 500mg x 90 pills price: 91.99 - name: 500mg x 120 pills price: 95.94 - name: 500mg x 360 pills price: 191.89 --- # Buy Generic Principen (Ampicillin) 250mg/500mg Pills Principen, containing the active ingredient Ampicillin, is a broad-spectrum penicillin antibiotic that treats various bacterial infections. It works by inhibiting bacterial cell wall synthesis and is effective against respiratory, urinary, and gastrointestinal infections. This medication is prescribed for adults with susceptible bacterial infections. Our online pharmacy offers Principen in 250mg and 500mg pill strengths for effective antibiotic treatment. ## Pricing and Options | Dosage | Pack Size | Price (USD) | Price Per Pill | Status | | :--- | :--- | :--- | :--- | :--- | | **250mg** | 30 pills | **$40.84** | $1.36 | In Stock | | **250mg** | 60 pills | **$60.79** | $1.02 | In Stock | | **250mg** | 90 pills | **$82.99** | $0.92 | In Stock | | **250mg** | 180 pills | **$104.49** | $0.58 | In Stock | | **250mg** | 360 pills | **$183.99** | $0.51 | In Stock | | **500mg** | 30 pills | **$42.74** | $1.42 | In Stock | | **500mg** | 60 pills | **$69.34** | $1.16 | In Stock | | **500mg** | 90 pills | **$91.99** | $1.02 | In Stock | | **500mg** | 120 pills | **$95.94** | $0.80 | In Stock | | **500mg** | 360 pills | **$191.89** | $0.53 | In Stock | [Buy Now](https://liabilis.com/order-principen-online-en.html) ## Introduction Principen is a generic oral antibiotic whose active ingredient is amp­icilline. It is supplied as a pill in strengths of 250 mg or 500 mg. Ampicilline belongs to the penicillin class of β-lactam antibiotics and is indicated for a range of bacterial infections in adults. The medication is used to treat conditions where susceptible organisms are known or strongly suspected, such as community-acquired respiratory infections, urinary tract infections, gastrointestinal infections, and certain forms of meningitis. ## Quick Reference Facts ``` **Active Ingredient** : Ampicilline **Form** : Pill 250 mg | 500 mg **Primary Uses** : • Uncomplicated respiratory tract infections • Urinary tract infections • Gastrointestinal bacterial infections • Bacterial meningitis (selected cases) ``` ## What is Principen? Principen is the generic version of medications containing the active compound amp­icilline. It is classified as a penicillin-type β-lactam antibiotic. The preparation is manufactured by several international suppliers that adhere to Good Manufacturing Practice (GMP) standards. Principen is the generic equivalent of brand-name products such as Omnipen and Polymox, which contain the same active molecule and have demonstrated bioequivalence in regulatory evaluations. Because it is a generic, Principen provides the same therapeutic effect at a lower cost compared with the branded formulations. ## How Principen Works Ampicilline exerts its antibacterial effect by binding to penicillin-binding proteins (PBPs) located on the bacterial cell wall. This binding interferes with the final stages of peptidoglycan synthesis, weakening the cell wall and leading to osmotic lysis of susceptible bacteria. The drug is bactericidal, meaning it kills the pathogen rather than merely inhibiting growth. After oral administration, amp­icilline is rapidly absorbed, achieving peak plasma concentrations within 1-2 hours. It is primarily eliminated unchanged by the kidneys, so renal function influences dosing frequency and total daily dose. The time-dependent killing pattern requires maintaining concentrations above the minimum inhibitory concentration (MIC) for the target organism throughout the dosing interval, which is why regular dosing (typically every 6 hours) is recommended for most infections. ## Conditions Treated with Principen - **Acute bacterial sinusitis** - Ampicilline targets common sinus pathogens such as *Streptococcus pneumoniae* and *Haemophilus influenzae*, reducing inflammation and promoting resolution of symptoms. - **Community-acquired pneumonia** - The drug covers typical organisms (e.g., *Streptococcus pneumoniae*) and is useful when atypical coverage is not required. - **Uncomplicated urinary tract infection** - Effective against *Escherichia coli* and other gram-negative bacilli that remain susceptible to penicillins. - **Gastroenteritis caused by susceptible *Salmonella* or *Shigella*** - By inhibiting bacterial cell-wall synthesis, amp­icilline shortens the duration of diarrheal illness. - **Meningitis due to *Haemophilus influenzae* (selected cases)** - When the organism is known to be penicillin-sensitive, amp­icilline can achieve therapeutic CSF levels after high-dose regimens. ## Is Principen the Right Medication for You? Principen is appropriate for adult patients who have a confirmed or strongly suspected infection caused by amp­icilline-susceptible bacteria. Ideal candidates include individuals without a history of severe penicillin allergy, with normal or mildly impaired renal function, and who are not taking medications that markedly alter renal clearance. It is particularly beneficial when the infection is mild to moderate and can be managed on an outpatient basis. Contraindications include known hypersensitivity to any penicillin, prior anaphylactic reaction to β-lactams, and severe renal impairment (creatinine clearance < 15 mL/min) without dose adjustment. Pregnant or breastfeeding women should discuss risks with their provider, as penicillins are generally considered safe but individual circumstances vary. ## Buying Principen from [our online pharmacy](https://liabilis.com/order-principen-online-en.html) ### Why Choose Our Service? Accessing antibiotics can be challenging when local pharmacies have limited stock or when insurance formularies restrict generic options. Our service offers a discreet, reliable pathway to obtain Principen at a price close to the manufacturer’s cost, helping patients avoid unnecessary mark-ups. ### Quality & Safety Assurance We partner with licensed international pharmacies to ensure quality and authenticity. Every batch of Principen is sourced from GMP-certified facilities and undergoes third-party verification before shipment. ### Pricing & Access Because Principen is a generic formulation, it is typically 30-50 % less expensive than brand-name equivalents such as Omnipen. Our platform provides transparent pricing, allowing you to compare costs instantly and choose the most economical option for your treatment plan. ### Discreet Delivery Orders are packaged in plain, unmarked envelopes and dispatched via express couriers that usually deliver within 7 days, or by standard airmail in roughly 3 weeks. All personal information is encrypted and handled in compliance with data-protection regulations. ## Use: Dosing, Missed Dose, Overdose - **Standard dosing** - **250 mg tablet** - One tablet every 6 hours for uncomplicated infections. - **500 mg tablet** - One tablet every 6 hours for more severe infections or when higher serum concentrations are required. - **Missed dose** - Take the missed dose as soon as you remember, unless it is less than 4 hours before the next scheduled dose. In that case, skip the missed dose and resume the regular schedule; do not double-dose. - **Overdose** - Symptoms may include nausea, vomiting, diarrhea, or a metallic taste. Seek immediate medical attention if large quantities are ingested, especially in patients with impaired kidney function. **Practical precautions** - Take Principen with a full glass of water; food may delay absorption but does not affect efficacy. - Avoid concurrent use of non-prescribed herbal supplements that contain alcohol or high levels of magnesium, as they can reduce absorption. - Do not operate heavy machinery if you experience dizziness or severe gastrointestinal upset. ## Safety Information ### ⚠️ Who Should Not Take Principen - Individuals with a documented anaphylactic reaction to any penicillin or other β-lactam antibiotic. - Patients with a history of severe, immediate-type hypersensitivity reactions (e.g., Stevens-Johnson syndrome) to penicillins. - Those with markedly reduced renal function (creatinine clearance < 15 mL/min) unless the dose is appropriately adjusted. ### Common Side Effects - **Gastrointestinal:** mild nausea, abdominal cramping, or loose stools (usually transient). - **Skin reactions:** rash or mild itching; most resolve without intervention. - **Local irritation:** occasional sour taste or mild oral irritation after swallowing the tablet. ### Serious Side Effects (Seek Immediate Medical Help) - **Anaphylaxis:** rapid swelling of the face or throat, difficulty breathing, or sudden hypotension. - **Severe skin reactions:** blistering, widespread rash, or peeling indicative of Stevens-Johnson syndrome or toxic epidermal necrolysis. - **Clostridioides difficile-associated diarrhea:** profuse watery stools, abdominal pain, and fever; may require specific therapy. ### Drug & Food Interactions - **Probenecid:** can increase amp­icilline plasma concentrations; dosage adjustment may be needed. - **Oral contraceptives:** rare reports suggest reduced efficacy; consider additional non-hormonal contraception. - **Renal-excreting antivirals (e.g., acyclovir):** concurrent use may elevate serum levels of both agents; monitor renal function. - **Alcohol:** does not directly interact but may exacerbate gastrointestinal upset. ## Off-Label and Investigational Uses of Principen - **Otitis media:** Some clinicians prescribe amp­icilline for middle-ear infections when the causative organism is known to be penicillin-sensitive, although the FDA approval is limited to systemic infections. - **Enteric fever (typhoid) prophylaxis:** Limited studies suggest prophylactic use in travelers to endemic regions; however, resistance patterns have reduced its practical utility. - **Prophylaxis for bacterial endocarditis:** In specific high-risk dental procedures, amp­icilline may be used as an alternative to amoxicillin, though guidelines favor amoxicillin when available. All off-label applications should only be undertaken under the direct supervision of a qualified healthcare professional, as efficacy and safety have not been formally evaluated by regulatory agencies for these indications. ## Storage & Handling - Store tablets at controlled room temperature (15 °C-30 °C / 59 °F-86 °F). - Keep the container tightly closed to protect from moisture and light. - Do not use tablets beyond the expiration date printed on the packaging. - Dispose of any unused medication in accordance with local hazardous-waste regulations or return them to a pharmacy take-back program. ## Frequently Asked Questions **Practical Use & Lifestyle** - **Can I travel internationally with Principen tablets?** Yes, but keep them in their original labeled container, carry a copy of the prescription (if required), and be aware of the destination country’s import rules for antibiotics. - **Should I take Principen with food or on an empty stomach?** The drug can be taken with or without food; taking it with a glass of water helps avoid throat irritation. - **Will taking probiotics interfere with Principen?** Probiotics do not diminish the antibacterial activity of amp­icilline, but they may help reduce antibiotic-associated diarrhea. **Product & Formulation Details** - **What do Principen tablets look like?** The 250 mg tablets are round, white, and debossed with “250 P”; the 500 mg tablets are round, blue, and marked “500 P.” Appearance may vary slightly between manufacturers. - **Are there any inactive ingredients I should beware of?** Common excipients include microcrystalline cellulose, magnesium stearate, and lactose. Patients with severe lactose intolerance should discuss alternatives with their provider. **Regulatory & Safety Nuances** - **Can Principen be detected in standard drug tests?** Ordinary workplace drug screens do not target antibiotics; thus, amp­icilline is not reported in typical urine or hair tests. - **Is Principen safe for individuals over 65 years old?** It can be used in older adults, but renal function should be assessed because age-related decline may necessitate dose adjustment. - **Does amp­icilline cross the placenta?** Limited data indicate minimal placental transfer; it is generally considered safe in pregnancy when clearly indicated, but a risk-benefit assessment is essential. **Scientific & Clinical Curiosity** - **When was amp­icilline first introduced?** Ampicilline was discovered in the late 195s and received regulatory approval in the early 196s as one of the first broad-spectrum penicillins. - **How does amp­icilline differ from amoxicillin?** Both are penicillins, but amoxicillin has an additional amino group that improves oral absorption, allowing lower doses for similar efficacy. - **Are there any known resistance mechanisms to amp­icilline?** Bacterial production of β-lactamases (e.g., TEM-1) can hydrolyze the β-lactam ring, rendering amp­icilline ineffective; susceptibility testing is therefore recommended. ## Glossary **β-lactam antibiotic** : A class of antibiotics that contain a four-membered β-lactam ring; they inhibit bacterial cell-wall synthesis. **Minimum Inhibitory Concentration (MIC)** : The lowest concentration of an antimicrobial that prevents visible growth of a microorganism in vitro. **Bioequivalence** : When two drug products release the same amount of active ingredient into the bloodstream at the same rate and extent. **Penicillin-binding proteins (PBPs)** : Enzymes located on the bacterial cell membrane that catalyze the final steps of peptidoglycan cross-linking; targeted by β-lactam antibiotics. ## Disclaimer The information supplied about **Principen** serves only as general educational material and does not replace a professional medical consultation. All therapeutic decisions, including those involving off-label applications, must be made under the guidance of a qualified healthcare practitioner. Readers are presumed to be responsible adults capable of making informed health choices. [our online pharmacy](https://liabilis.com/order-principen-online-en.html) provides a channel for obtaining **Principen** to individuals who may encounter limited availability through conventional pharmacies, insurance formularies, or who seek cost-effective generic alternatives. Prior to initiating, modifying, or stopping any medication, you should consult your physician.