Neomycin Sulfate 500 mg Tablet, 100-count — NDC 0093-1177-01 (Billing 00093-1177-01)
This is a package of 100 tablets of Neomycin Sulfate 500 mg Tablet from Teva Pharmaceuticals USA, Inc., marketed since Sep 1990 and currently FDA-listed; retail pharmacies pay about $0.8331 per tablet (NADAC). It is this product's only package size.
NDC database record
One package, one record: these facts belong to NDC 0093-1177-01 alone.
- Record
- FDA NDC Directory package listing · Human prescription drug
- Code segments
- 0093 labeler · 1177 product · 01 package
- Package marketed since
- Sep 30, 1990
- Sample package
- No — commercial package
- Listing certified through
- Dec 31, 2026
- Billing quantity
- 100 EA per package
- Barcode (UPC)
- 0300931177018
- Medicaid fills, this package
- 18,964 prescriptions in the last four reported quarters
- FDA record last changed
- Jul 24, 2026
Past resolved recalls for this product (1)
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
- GSN (GCN sequence number): 009284
- GCN: 41072
- GPI-14 (Medi-Span): 07000040100305
- HICL (First Databank): 004029
- AHFS class code: 08:12.02.00
- RxCUI (RxNorm): 866042
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 8, 2026
- FDA label on DailyMed · label index refreshed Oct 8, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 8, 2026
RxNorm drug class
This medicine belongs to the Aminoglycoside Antibacterial class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
Patient education
Supplement & herbal interactions
Neomycin may be associated with lower levels of 10 nutrients — worth a chat with your pharmacist, not a cause for alarm.
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 8, 2026
- FDA label on DailyMed · label index refreshed Oct 8, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per ea | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | $0.833 | $83.31 / 100 tablets |
| Medicaid paysCMS SDUD · 12 mo | $1.31 | $130.82 / 100 tablets |
| Medicare drug plans payPart D · Q2 2026 | $0.9709 | $97.09 / 100 tablets |
Where does this data come from?
- CMS NADAC weekly file · file of Oct 7, 2026
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · through Q1 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 00093-1177-01 You're viewing this Main listing | 100 TABLET in 1 BOTTLE | 1990-09-30 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Neomycin Sulfate 500 mgthis 00093-1177-01 | Teva | 100 tablets | $0.833 | AA | Availability likely | — |
| Neomycin Sulfate 500 mg 62135-0443-90 | Chartwell | 90 tablets | $0.833 | — | Availability likely | — |
| Neomycin Sulfate 500 mg 73473-0901-05 | Solaris | 100 tablets | $0.833 | AA | Availability likely | — |
| Neomycin Sulfate 500 mg 70518-4624-00 | REMEDYREPACK | 50 tablets | — | AA | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 8, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file · file of Oct 7, 2026
Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
- FDA Orange Book · refreshed Oct 3, 2026
What it looks like
Where does this data come from?
- FDA label on DailyMed · label index refreshed Oct 8, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
-
UNII 776XM7047L
Calcium stearate is a white powder derived from stearic acid and calcium. It works as a lubricant and glidant to help the medicine flow smoothly during manufacturing and prevent ingredients from sticking to equipment.
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UNII U725QWY32X
Povidone K30 is a synthetic polymer made from petroleum. It acts as a binder to hold tablet ingredients together and as a disintegrant to help the tablet break apart in the stomach so the medicine can be absorbed.
2 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.- FDA label on DailyMed · label index refreshed Oct 8, 2026
- FDA openFDA NDC Directory · synced Oct 8, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
More NDCs from Teva Pharmaceuticals USA, Inc. labeler code 00093
- Etodolac 400 mg Tablet, Film Coated, Extended Release NDC 0093-1122-01
- Acitretin 10 mg Capsule NDC 0093-1135-00
- Acitretin 25 mg Capsule NDC 0093-1136-00
- Acitretin 17.5 mg Capsule NDC 0093-1138-00
- Penicillin V Potassium 250 mg Tablet NDC 0093-1172-01
- Penicillin V Potassium 500 mg Tablet NDC 0093-1174-01
- Warfarin Sodium 1 mg Tablet NDC 0093-1712-01
- Warfarin Sodium 2 mg Tablet NDC 0093-1713-01
- Warfarin Sodium 2.5 mg Tablet NDC 0093-1714-01
- Warfarin Sodium 3 mg Tablet NDC 0093-1715-01
- Warfarin Sodium 4 mg Tablet NDC 0093-1716-01
- Warfarin Sodium 6 mg Tablet NDC 0093-1718-01
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 8, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🚨 Boxed Warning ▾
WARNINGS SYSTEMIC ABSORPTION OF NEOMYCIN OCCURS FOLLOWING ORAL ADMINISTRATION AND TOXIC REACTIONS MAY OCCUR. Patients treated with neomycin should be under close clinical observation because of the potential toxicity associated with their use. NEUROTOXICITY (INCLUDING OTOTOXICITY) AND NEPHROTOXICITY FOLLOWING THE ORAL USE OF NEOMYCIN SULFATE HAVE BEEN REPORTED, EVEN WHEN USED IN RECOMMENDED DOSES.
THE POTENTIAL FOR NEPHROTOXICITY, PERMANENT BILATERAL AUDITORY OTOTOXICITY AND SOMETIMES VESTIBULAR TOXICITY IS PRESENT IN PATIENTS WITH NORMAL RENAL FUNCTION WHEN TREATED WITH HIGHER DOSES OF NEOMYCIN AND/OR FOR LONGER PERIODS THAN RECOMMENDED. Serial, vestibular and audiometric tests, as well as tests of renal function, should be performed (especially in high-risk patients). THE RISK OF NEPHROTOXICITY AND OTOTOXICITY IS GREATER IN PATIENTS WITH IMPAIRED RENAL FUNCTION.
Ototoxicity is often delayed in onset and patients developing cochlear damage will not have symptoms during therapy to warn them of developing eighth nerve destruction and total or partial deafness may occur long after neomycin has been discontinued. Neuromuscular blockage and respiratory paralysis have been reported following the oral use of neomycin. The possibility of the occurrence of neuromuscular blockage and respiratory paralysis should be considered if neomycin is administered, especially to patients receiving anesthetics, neuromuscular blocking agents such as tubocurarine, succinylcholine, decamethonium, or in patients receiving massive transfusions of citrate anticoagulated blood.
If blockage occurs, calcium salts may reverse these phenomena but mechanical respiratory assistance may be necessary. Concurrent and/or sequential systemic, oral or topical use of other aminoglycosides, including paromomycin and other potentially nephrotoxic and/or neurotoxic drugs such as bacitracin, cisplatin, vancomycin, amphotericin B, polymyxin B, colistin and viomycin, should be avoided because the toxicity may be additive. Other factors which increase the risk of toxicity are advanced age and dehydration.
The concurrent use of neomycin with potent diuretics such as ethacrynic acid or furosemide should be avoided, since certain diuretics by themselves may cause ototoxicity. In addition, when administered intravenously, diuretics may enhance neomycin toxicity by altering the antibiotic concentration in serum and tissue.
🎯 Indications and Usage ▾
INDICATIONS AND USAGE To reduce the development of drug-resistant bacteria and maintain the effectiveness of neomycin sulfate tablets, USP and other antibacterial drugs, neomycin sulfate tablets, USP should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
Suppression of intestinal bacteria Neomycin sulfate tablets are indicated as adjunctive therapy as part of a regimen for the suppression of the normal bacterial flora of the bowel, eg, preoperative preparation of the bowel. It is given concomitantly with erythromycin enteric-coated base (see DOSAGE AND ADMINISTRATION ). Hepatic coma (portal-systemic encephalopathy) Neomycin sulfate has been shown to be effective adjunctive therapy in hepatic coma by reduction of the ammonia-forming bacteria in the intestinal tract.
The subsequent reduction in blood ammonia has resulted in neurologic improvement.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION To minimize the risk of toxicity, use the lowest possible dose and the shortest possible treatment period to control the condition. Treatment for periods longer than two weeks is not recommended. Hepatic Coma For use as an adjunct in the management of hepatic coma, the recommended dose is 4 to 12 grams per day given in the following regimen: Withdraw protein from diet.
Avoid use of diuretic agents. Give supportive therapy, including blood products, as indicated. Give neomycin sulfate tablets in doses of 4 to 12 grams of neomycin sulfate per day (eight to 24 tablets) in divided doses.
Treatment should be continued over a period of five to six days, during which time protein should be returned incrementally to the diet. If less potentially toxic drugs cannot be used for chronic hepatic insufficiency, neomycin in doses of up to four grams daily (eight tablets per day) may be necessary. The risk for the development of neomycin-induced toxicity progressively increases when treatment must be extended to preserve the life of a patient with hepatic encephalopathy who has failed to fully respond.
Frequent periodic monitoring of these patients to ascertain the presence of drug toxicity is mandatory (see PRECAUTIONS ). Also, neomycin serum concentrations should be monitored to avoid potentially toxic levels. The benefits to the patient should be weighed against the risks of nephrotoxicity, permanent ototoxicity and neuromuscular blockade following the accumulation of neomycin in the tissues.
Preoperative Prophylaxis for Elective Colorectal Surgery Listed below is an example of a recommended bowel preparation regimen. A proposed surgery time of 8:00 a.m. has been used. Pre-op Day 3: Minimum residue or clear liquid diet.
Bisacodyl, 1 tablet orally at 6:00 p.m. Pre-op Day 2: Minimum residue or clear liquid diet. Magnesium sulfate, 30 mL, 50% solution (15 g) orally at 10:00 a.m., 2:00 p.m., and 6:00 p.m.
Enema at 7:00 p.m. and 8:00 p.m. Pre-op Day 1: Clear liquid diet. Supplemental (IV) fluids as needed.
Magnesium sulfate, 30 mL, 50% solution (15 g) orally at 10:00 a.m., and 2:00 p.m. Neomycin sulfate (1 g) and erythromycin base (1 g) orally at 1:00 p.m., 2:00 p.m. and 11:00 p.m. No enema.
Day of Operation: Patient evacuates rectum at 6:30 a.m. for scheduled operation at 8:00 a.m.
⛔ Contraindications ▾
CONTRAINDICATIONS Neomycin sulfate oral preparations are contraindicated in the presence of intestinal obstruction and in individuals with a history of hypersensitivity to the drug. Patients with a history of hypersensitivity or serious toxic reaction to other aminoglycosides may have a cross-sensitivity to neomycin. Neomycin sulfate oral preparations are contraindicated in patients with inflammatory or ulcerative gastrointestinal disease because of the potential for enhanced gastrointestinal absorption of neomycin.
⚠️ Warnings ▾
WARNINGS (see BOXED WARNINGS) Additional manifestations of neurotoxicity may include numbness, skin tingling, muscle twitching and convulsions. The risk of hearing loss continues after drug withdrawal. Aminoglycosides can cause fetal harm when administered to a pregnant woman.
Aminoglycoside antibiotics cross the placenta and there have been several reports of total irreversible bilateral congenital deafness in children whose mothers received streptomycin during pregnancy. Although serious side effects to fetus or newborn have not been reported in the treatment of pregnant women with other aminoglycosides, the potential for harm exists. Animal reproduction studies of neomycin have not been conducted.
If neomycin is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus. Risk of Ototoxicity Due to Mitochondrial DNA Variants Cases of ototoxicity with aminoglycosides have been observed in patients with certain variants in the mitochondrially encoded 12S rRNA gene ( MT-RNR1 ), particularly the m.1555A>G variant. Ototoxicity occurred in some patients even when their aminoglycoside serum levels were within the recommended range.
Mitochondrial DNA variants are present in less than 1% of the general US population, and the proportion of the variant carriers who may develop ototoxicity as well as the severity of ototoxicity is unknown. In case of known maternal history of ototoxicity due to aminoglycoside use or a known mitochondrial DNA variant in the patient, consider alternative treatments other than aminoglycosides unless the increased risk of permanent hearing loss is outweighed by the severity of infection and lack of safe and effective alternative therapies.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS The most common adverse reactions to oral neomycin sulfate are nausea, vomiting and diarrhea. The “Malabsorption Syndrome” characterized by increased fecal fat, decreased serum carotene and fall in xylose absorption has been reported with prolonged therapy. Nephrotoxicity, ototoxicity and neuromuscular blockage have been reported (see boxed WARNINGS and PRECAUTIONS sections).
🔄 Drug Interactions ▾
Drug Interactions Caution should be taken in concurrent or serial use of other neurotoxic and/or nephrotoxic drugs because of possible enhancement of the nephrotoxicity and/or ototoxicity of neomycin (see boxed WARNINGS ). Caution should also be taken in concurrent or serial use of other amino-glycosides and polymyxins because they may enhance neomycin’s nephrotoxicity and/or ototoxicity and potentiate neomycin sulfate’s neuromuscular blocking effects. Oral neomycin inhibits the gastrointestinal absorption of penicillin V, oral vitamin B-12, methotrexate and 5-fluorouracil.
The gastrointestinal absorption of digoxin also appears to be inhibited. Therefore, digoxin serum levels should be monitored. Oral neomycin sulfate may enhance the effect of coumarin in anticoagulants by decreasing vitamin K availability.
🤰 Pregnancy ▾
Pregnancy (See Warnings section.)
🧒 Pediatric Use ▾
Pediatric Use The safety and efficacy of oral neomycin sulfate in patients less than 18 years of age have not been established. If treatment of a patient less than 18 years of age is necessary, neomycin should be used with caution and the period of treatment should not exceed two weeks because of absorption from the gastrointestinal tract.
🆘 Overdosage ▾
OVERDOSAGE Because of low absorption, it is unlikely that acute overdosage would occur with oral neomycin sulfate. However, prolonged administration could result in sufficient systemic drug levels to produce neurotoxicity, ototoxicity and/or nephrotoxicity. Hemodialysis will remove neomycin sulfate from the blood.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY Neomycin sulfate is poorly absorbed from the normal gastrointestinal tract. The small absorbed fraction is rapidly distributed in the tissues and is excreted by the kidney in keeping with the degree of kidney function. The unabsorbed portion of the drug (approximately 97%) is eliminated unchanged in the feces.
Growth of most intestinal bacteria is rapidly suppressed following oral administration of neomycin sulfate, with the suppression persisting for 48 to 72 hours. Nonpathogenic yeasts and occasionally resistant strains of Enterobacter aerogenes (formerly Aerobacter aerogenes ) replace the intestinal bacteria. As with other aminoglycosides, the amount of systemically absorbed neomycin transferred to the tissues increases cumulatively with each repeated dose administered until a steady state is achieved.
The kidney functions as the primary excretory path as well as the tissue binding site, with the highest concentration found in the renal cortex. With repeated dosings, progressive accumulation also occurs in the inner ear. Release of tissue-bound neomycin occurs slowly over a period of several weeks after dosing has been discontinued.
Protein binding studies have shown that the degree of aminoglycoside protein binding is low and, depending upon the methods used for testing, this may be between 0% and 30%. Microbiology In vitro tests have demonstrated that neomycin is bactericidal and acts by inhibiting the synthesis of protein in susceptible bacterial cells. It is effective primarily against gram-negative bacilli but does have some activity against gram-positive organisms.
Neomycin is active in vitro against Escherichia coli and the Klebsiella-Enterobacter group. Neomycin is not active against anaerobic bowel flora. Susceptibility Testing For specific information regarding susceptibility test interpretive criteria and associated test methods and quality control standards recognized by FDA for this drug, please see: https://www.fda.gov/STIC.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Neomycin sulfate tablets USP, 500 mg (equivalent to 350 mg of neomycin base per tablet) are available as round, off-white, unscored tablets, debossed “93” and “1177”, in bottles of 100 tablets (NDC 0093-1177-01). Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Dispense in tight containers as defined in the USP/NF.
KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN. Manufactured For: Teva Pharmaceuticals Parsippany, NJ 07054 Rev. I 10/2022
📋 Description ▾
DESCRIPTION Neomycin sulfate tablets, USP, for oral administration, contain neomycin which is an antibiotic obtained from the metabolic products of the actinomycete Streptomyces fradiae . Structurally, neomycin sulfate may be represented as follows: C 23 H 46 N 6 O 13 ·2½ H 2 SO 4 MW 614.67 Chemically, it is 0 -2,6-diamino-2,6-dideoxy-α-D-glucopyranosyl-(1→3)- 0 -β-D-ribofuranosyl-(1→5)- 0 -[2,6-diamino-2,6-dideoxy-α-D-glucopyranosyl-(1→4)]-2-deoxy-D-streptamine. Neomycin B is identical except that the a-D-glucopyranosyl residue in the neobiosamine moiety is β-L-idopyranosyl.
Each tablet contains 500 mg neomycin sulfate (equivalent to 350 mg neomycin base). Inactive ingredients: calcium stearate, povidone. chemical-structure
💬 Information for Patients ▾
Information for Patients Patients should be counseled that antibacterial drugs including neomycin sulfate tablets, USP should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When neomycin sulfate tablets, USP are prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed.
Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by neomycin sulfate tablets, USP or other antibacterial drugs in the future. Before administering the drug, patients or members of their families should be informed of possible toxic effects on the eighth nerve. The possibility of acute toxicity increases in premature infants and neonates.
⚠️ Precautions ▾
PRECAUTIONS General Prescribing neomycin sulfate tablets, USP in the absence of a proven or strongly suspected bacterial infection or a prophylactic indication is unlikely to provide benefit to the patient and increases the risk of the development of drug-resistant bacteria. As with other antibiotics, use of oral neomycin may result in overgrowth of nonsusceptible organisms, particularly fungi. If this occurs, appropriate therapy should be instituted.
Neomycin is quickly and almost totally absorbed from body surfaces (except the urinary bladder) after local irrigation and when applied topically in association with surgical procedures. Delayed-onset irreversible deafness, renal failure and death due to neuromuscular blockade (regardless of the status of renal function) have been reported following irrigation of both small and large surgical fields with minute quantities of neomycin. Cross-allergenicity among amino-glycosides has been demonstrated.
Aminoglycosides should be used with caution in patients with muscular disorders such as myasthenia gravis or parkinsonism since these drugs may aggravate muscle weakness because of their potential curare-like effect on the neuromuscular junction. Small amounts of orally administered neomycin are absorbed through intact intestinal mucosa. There have been many reports in the literature of nephrotoxicity and/or ototoxicity with oral use of neomycin.
If renal insufficiency develops during oral therapy, consideration should be given to reducing the drug dosage or discontinuing therapy. An oral neomycin dose of 12 grams per day produces a malabsorption syndrome for a variety of substances, including fat, nitrogen, cholesterol, carotene, glucose, xylose, lactose, sodium, calcium, cyanocobalamin and iron. Orally administered neomycin increases fecal bile acid excretion and reduces intestinal lactase activity.
Information for Patients Patients should be counseled that antibacterial drugs including neomycin sulfate tablets, USP should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When neomycin sulfate tablets, USP are prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed.
Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by neomycin sulfate tablets, USP or other antibacterial drugs in the future. Before administering the drug, patients or members of their families should be informed of possible toxic effects on the eighth nerve. The possibility of acute toxicity increases in premature infants and neonates.
Laboratory Tests Patients with renal insufficiency may develop toxic neomycin blood levels unless doses are properly regulated. If renal insufficiency develops during treatment, the dosage should be reduced or the antibiotic discontinued. To avoid nephrotoxicity and eighth nerve damage associated with high doses and prolonged treatment, the following should be performed prior to and periodically during therapy: urinalysis for increased excretion of protein, decreased specific gravity, casts and cells; renal function tests such as serum creatinine, BUN or creatinine clearance; tests of the vestibulocochlearis nerve (eighth cranial nerve) function.
Serial, vestibular and audiometric tests should be performed (especially in high-risk patients). Since elderly patients may have reduced renal function which may not be evident in the results of routine screening tests such as BUN or serum creatinine, a creatinine clearance determination may be more useful. Drug Interactions Caution should be taken in concurrent or serial use of other neurotoxic and/or nephrotoxic drugs because of possible enhancement of the nephrotoxicity and/or ototoxicity o… [Excerpted — this section continues on DailyMed.]
🍼 Nursing Mothers ▾
Nursing Mothers It is not known whether neomycin is excreted in human milk, but it has been shown to be excreted in cow milk following a single intramuscular injection. Other aminoglycosides have been shown to be excreted in human milk. Because of the potential for serious adverse reactions from the aminoglycosides in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.
📄 Carcinogenesis, Mutagenesis, Impairment of Fertility ▾
Carcinogenesis, Mutagenesis, Impairment of Fertility No long-term animal studies have been performed with neomycin sulfate to evaluate carcinogenic or mutagenic potential or impairment of fertility.
📄 Package Label / Principal Display Panel ▾
Package/Label Display Panel NDC 0093-1177-01 Neomycin Sulfate Tablets, USP 500 mg Rx only 100 Tablets Label