Cephalexin is an oral prescription antibiotic supplied in several product forms in the United States. The familiar solid options are capsules and tablets; liquid cephalexin is generally supplied as powder that a pharmacy mixes into an oral suspension. Each product family has distinct labeled strengths or concentrations, so the name cephalexin alone is not sufficient to identify the correct item.
Before filling a prescription, check the route, dosage form, strength or liquid concentration, quantity and directions. Capsules frequently appear at 250 mg and 500 mg; some current U.S. capsule labeling also lists 333 mg and 750 mg presentations. That does not establish inventory for a particular strength. Liquid cephalexin commonly carries concentrations of 125 mg/5 mL or 250 mg/5 mL after mixing. The dedicated capsule guide, tablet guide and suspension guide explain each family.
This page is an index of product formats, not a prescribing calculator or live pharmacy catalog. An FDA-approved or listed presentation does not guarantee immediate availability at a particular store. Check current supply verification and generic substitution rules when a pharmacy proposes a different manufacturer or presentation.
The primary decision for a pharmacist is whether the dispensed product matches the clinician’s authorized order. A solid unit expresses its ingredient amount per capsule or tablet; a liquid concentration expresses ingredient amount in a specified volume. A patient should not infer an equivalent number of pills or milliliters without clear prescribing instructions.
The overview below points to dedicated pages. The 250 mg and 500 mg pages focus on solid product strengths, while the liquid concentration pages handle labels that say mg per 5 mL.
A product name printed in a pharmacy search result may not include every critical field. When requesting a quote, read the full prescribed directions to the pharmacist and ask them to repeat the form and strength back to you. A liquid bottle that uses the same milligram number as a capsule is not necessarily the same prescribed presentation, and a historic brand listing is not a current supply confirmation.
| Form | Common U.S. label examples | Main verification |
|---|---|---|
| Capsules | Common examples: 250 mg and 500 mg; some labels also list 333 mg and 750 mg | Strength per capsule; manufacturer and imprint |
| Tablets | 250 mg and 500 mg products in labeling | Exact tablet product and currently marketable status |
| Powder for oral suspension | 125 mg/5 mL and 250 mg/5 mL after mixing | Concentration, final volume, pharmacy preparation |
| Solid-form comparison | Tablet versus capsule | Authorized formulation and swallowing considerations |
| Liquid versus capsule | Measured liquid versus whole solid units | Administration and storage considerations |
| Pharmacy supply check | Any prescribed form | Actual item and quantity in the pharmacy |
Many U.S. cephalexin capsule labels include 250 mg and 500 mg strengths, but the list is not exhaustive. An October 2026 DailyMed capsule label also specifies 333 mg and 750 mg capsules. These are documented strengths of a particular labeled product family—not a statement that every manufacturer supplies them or that a local pharmacy stocks them. The correct strength, manufacturer, imprint and package must be checked against the prescription.
Use the capsule product guide for strength and appearance questions. The pharmacist can check the exact NDC and dispensed package; do not treat a capsule photograph or a list of labeled strengths as a substitute for the pharmacy record.
U.S. DailyMed records also describe cephalexin tablets, including 250 mg and 500 mg strengths. A tablet may have a shape or score different from a capsule, but a score mark is not an instruction to split the dose. Product labels and marketing status can change over time.
The tablet page addresses product-level questions. If only capsule listings appear at a nearby pharmacy, do not assume the pharmacist can change dosage form without checking the prescription and applicable substitution rules.
The oral suspension starts as a powder that must be reconstituted as directed on the specific manufacturer label, usually by pharmacy staff before dispensing. The concentration after preparation is often 125 mg/5 mL or 250 mg/5 mL; the final fill volume and actual dispensed directions matter.
Compare 125 mg/5 mL with 250 mg/5 mL before confirming a refill. A change in concentration without changed volume directions could cause a medication error. Ask for a proper oral dosing syringe or equivalent device.
Some patients mistakenly read the 100 mL or 200 mL printed on an oral suspension bottle as a medication dose. It is normally a final preparation volume, and the concentration is a separate field. The pharmacy should explain how those details connect to the written quantity and the measuring device. A caregiver should never divide bottle volume by an assumed number of treatment days to establish a dose.
Strength describes how much drug is in one dosage unit or stated liquid volume. Dose tells the patient how much to take each time; frequency says when; quantity tells the pharmacy how many units or how much prepared liquid to dispense. These values are connected but are not interchangeable.
An order for 500 mg as a single administered dose does not, by itself, establish how many doses per day are needed. The dosage guide and frequency guide cover general prescribed-regimen context without encouraging self-adjustment.
Read the patient name, drug, exact form, strength or concentration, instructions, prescribed duration where stated, quantity and any refill notes. The pharmacist should also check allergies, relevant interactions and renal dosing questions during routine medication review. Confirm instructions before leaving or accepting delivery.
If a generic manufacturer or physical appearance differs from earlier refills, consult the generic cephalexin guide and ask the pharmacist to identify the new product. The FDA Orange Book is useful for approved product and therapeutic-equivalence research, not for confirming shelf stock.
Consider making a written copy of the dispensed label when coordinating care across two households, school and home, or a caregiver and patient. The copied instructions must come from the current pharmacy label, not an online calculator or an earlier episode of treatment. Multiple bottles should be kept distinctly identified so that capsules, tablets and prepared liquids are not mixed up.
Swallowing ability, age, feeding considerations and the prescribed quantity can affect the practicality of a solid or liquid form. Liquid may be helpful when a patient cannot swallow a capsule, but it introduces preparation, measurement and refrigerated-storage duties after mixing. Solids avoid liquid measurement but are not appropriate for everyone.
The prescriber and pharmacist should resolve form changes; patients should not crush tablets, open capsules or substitute a liquid concentration without explicit professional confirmation. Excipients can also differ between manufacturers, which may matter for certain patients.
A product can have a DailyMed label or an FDA approval record without being in stock at a particular pharmacy. A historical reference to a branded tablet may also be confused with a currently supplied generic. Consider the exact product name, manufacturer, NDC and current marketing information when a particular item matters.
Use availability questions for pharmacy contact and manufacturer records for product-context research. This site does not publish verified inventory by store, so avoid planning pickup based solely on a product directory.
Capsules and tablets are generally stored under their labeled room-temperature conditions, protected from unsuitable heat or moisture. Reconstituted suspension has different instructions, and selected U.S. labels direct refrigeration with a limited beyond-mixing period. Check the actual pharmacy label for the dispensed product.
The specialized liquid storage guide covers why an unopened dry powder and a prepared suspension are not handled identically. When storage is uncertain, contact the pharmacist rather than estimating usable potency from appearance or smell.
A pharmacy quote may depend on the quantity of capsules, tablet packaging or amount of liquid to be prepared. Insurance formularies and pharmacy contracting can also affect whether a particular product is processed at the expected price. A lower listed price for another form is not authorization to alter the prescription.
Compare like-for-like quotes using the cost overview and insurance coverage guidance. Ask the pharmacist which authorized equivalent products can be considered, and request prescriber clarification where needed.
The practical starting point is the complete prescription: name, form, strength or concentration, dose instructions and quantity. When a pharmacy offers a different item, verify that it is an appropriate, legally permitted product match and that the patient knows exactly how to take or measure it.
This site may receive referral compensation from external commercial partners. Such links do not establish product availability, make a dosage-form substitution appropriate or replace professional review of a prescription.
Cephalexin is available in U.S. labeling as capsules, tablets and powder for oral suspension. A particular form may not be stocked by every pharmacy.
250 mg and 500 mg are common capsule strengths, while certain current U.S. product labels also list 333 mg and 750 mg. Availability and interchangeability must be verified for the exact prescribed product; a label is not a live stock report.
They contain cephalexin but are different dosage forms. Any substitution should be confirmed by the pharmacist and prescriber as required.
They express milligrams of cephalexin contained in each 5 mL of prepared suspension. They are not the dose to give every patient.
No. A 500 mg product is a unit strength, not a statement about maximum daily dose or individual regimen. Prescribing must be individualized.
No. The form, administered amount and directions must be checked and authorized by appropriate professionals.
No. DailyMed publishes drug labeling, not real-time retailer inventory.
Many U.S. cephalexin suspension labels specify refrigeration after mixing. Confirm the instructions and beyond-use period on the actual dispensed bottle.