Valacyclovir 500 mg Tablet, 20-count — NDC 61919-515-20 (Billing 61919-0515-20)
This is a package of 20 tablets of Valacyclovir 500 mg Tablet from DirectRX, no longer marketed, no longer in the FDA NDC Directory. It is this product's only package size.
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): 023989
- GCN: 13740
- HICL (First Databank): 010117
- AHFS class code: 08:18.32.00
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
Clinical
- It treats herpes virus infections. That includes cold sores, genital herpes, and shingles in adults. Children can use it for cold sores (age 12 and older) and chickenpox (ages 2 to...
- No, you can take it with or without food. Do try to drink plenty of fluids while you are on it, since good hydration helps protect your kidneys.
- As early as you can. For cold sores, start at the first tingling, itching or burning. Treatment works best for genital herpes and shingles when started within a day or two of sympt...
- The most common ones are headache, nausea and stomach pain. Some people also get vomiting or dizziness. These are usually mild, but tell me if they bother you.
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Valacyclovir — tap one for details:
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 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 each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 3, 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 |
|---|---|---|---|---|
| 61919-0515-20 You're viewing this Main listing | 20 TABLET in 1 BOTTLE | 2019-04-24 | — | Inactivated by FDA |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Valacyclovir Hydrochloride 500 mg 00378-4275-77 | Mylan | 90 tablets | $0.229 | AB | Availability likely | — |
| Valacyclovir Hydrochloride 500 mg 00904-6565-07 | Major | 1 tablet | $0.229 | AB | Availability likely | — |
| Valacyclovir Hydrochloride 500 mg 50268-0788-15 | AvPAK | 1 tablet | $0.229 | AB | Availability likely | — |
| Valacyclovir Hydrochloride 500 mg 51079-0093-03 | Mylan | 1 tablet | $0.229 | AB | Availability likely | — |
| Valacyclovir 500 mg 62135-0613-30 | Chartwell | 30 tablets | $0.229 | AB | Availability likely | — |
| Valacyclovir Hydrochloride 500 mg 68084-0215-01 | American | 1 tablet | $0.229 | AB | Availability likely | — |
| Valacyclovir 500 mg 69367-0262-09 | Westminster | 90 tablets | $0.229 | AB | Availability likely | — |
| Valacyclovir 500 mg 82009-0040-30 | Quallent | 30 tablets | $0.229 | AB | Discontinued | — |
| Valacyclovir Hydrochloride 500 mg 16714-0698-01 | NorthStar | 30 tablets | $0.277 | AB | Discontinued | — |
| Valtrex 500 mg 00173-0933-08 | GlaxoSmithKline | 30 tablets | $12.805 | AB | Availability likely | — |
| Valacyclovir 500 mg 31722-0704-01 | Camber | 100 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 43063-0730-10 | PD-Rx | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 48433-0144-03 | Safecor | 1 tablet | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 49483-0690-03 | TIME | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 50090-2510-00 | A-S | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 50090-5852-00 | A-S | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 50090-6581-00 | A-S | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 50090-6918-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 50090-7702-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 51407-0107-30 | Golden | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 51655-0633-21 | Northwind | 21 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 55154-7985-00 | Cardinal | 1 tablet | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 57237-0042-05 | Rising | 500 tablets | — | AB | FDA listed | — |
| valacyclovir hydrochloride 500 mg 59746-0324-01 | Jubilant | 100 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 61919-0066-20 | Direct | 20 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 63187-0832-04 | Proficient | 4 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 63304-0904-03 | SUN | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 65862-0448-01 | Aurobindo | 100 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 67046-1071-03 | Coupler | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 67296-2127-02 | Redpharm | 21 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 68071-2738-01 | NuCare | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 68071-3747-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 68071-3749-04 | NuCare | 14 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 68071-4783-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 68071-4885-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 68788-4105-03 | Preferred | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 68788-8482-03 | Preferred | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 68788-8904-03 | Preferred | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 69117-0010-01 | Yiling | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 70518-2266-00 | REMEDYREPACK | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 70518-4417-00 | REMEDYREPACK | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 70518-4661-00 | REMEDYREPACK | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 71335-0708-00 | Bryant | 60 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 71335-1341-00 | Bryant | 60 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 71335-2566-00 | Bryant | 60 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 72162-2366-09 | Bryant | 90 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 72189-0630-20 | Direct_Rx | 20 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 72789-0263-10 | PD-Rx | 10 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 72789-0264-30 | PD-Rx | 30 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 76420-0053-12 | Asclemed | 12 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 82804-0009-06 | Proficient | 6 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mg 82804-0212-06 | Proficient | 6 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 82868-0055-21 | Northwind | 21 tablets | — | AB | FDA listed | — |
| Valacyclovir Hydrochloride 500 mg 85766-0054-01 | Sportpharm | 100 tablets | — | AB | FDA listed | — |
| Valacyclovir 500 mgthis 61919-0515-20 | DirectRX | 20 tablets | — | — | Discontinued | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file
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 Sep 3, 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.
Where does this data come from?
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
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Manufacturer & labeler
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1.1Adult Patients Cold Sores (Herpes Labialis): Valacyclovir tablets, USP are indicated for treatment of cold sores (herpes labialis). The efficacy of valacyclovir tablets, USP initiated after the development of clinical signs of a cold sore (e.g., papule, vesicle, or ulcer) has not been established. Genital Herpes: Initial Episode: Valacyclovir tablets, USP are indicated for treatment of the initial episode of genital herpes in immunocompetent adults.
The efficacy of treatment with valacyclovir tablets, USP when initiated more than 72 hours after the onset of signs and symptoms has not been established. Recurrent Episodes: Valacyclovir tablets, USP are indicated for treatment of recurrent episodes of genital herpes in immunocompetent adults. The efficacy of treatment with valacyclovir tablets, USP when initiated more than 24 hours after the onset of signs and symptoms has not been established.
Suppressive Therapy: Valacyclovir tablets, USP are indicated for chronic suppressive therapy of recurrent episodes of genital herpes in immunocompetent and in HIV-infected adults. The efficacy and safety of valacyclovir tablets, USP for the suppression of genital herpes beyond 1 year in immunocompetent patients and beyond 6 months in HIV-infected patients have not been established. Reduction of Transmission: Valacyclovir tablets, USP are indicated for the reduction of transmission of genital herpes in immunocompetent adults.
The efficacy of valacyclovir tablets, USP for the reduction of transmission of genital herpes beyond 8 months in discordant couples has not been established. The efficacy of valacyclovir tablets, USP for the reduction of transmission of genital herpes in individuals with multiple partners and non-heterosexual couples has not been established. Safer sex practices should be used with suppressive therapy (see current Centers for Disease Control and Prevention [CDC] Sexually Transmitted Diseases Treatment Guidelines).
Herpes Zoster: Valacyclovir tablets, USP are indicated for the treatment of herpes zoster (shingles) in immunocompetent adults. The efficacy of valacyclovir tablets, USP when initiated more than 72 hours after the onset of rash and the efficacy and safety of valacyclovir tablets, USP for treatment of disseminated herpes zoster have not been established.
1.2Pediatric Patients Cold Sores (Herpes Labialis): Valacyclovir tablets, USP are indicated for the treatment of cold sores (herpes labialis) in pediatric patients ≥12 years of age. The efficacy of valacyclovir tablets, USP initiated after the development of clinical signs of a cold sore (e.g., papule, vesicle, or ulcer) has not been established. Chickenpox: Valacyclovir tablets, USP are indicated for the treatment of chickenpox in immunocompetent pediatric patients 2 to <18 years of age.
Based on efficacy data from clinical studies with oral acyclovir, treatment with valacyclovir tablets, USP should be initiated within 24 hours after the onset of rash [see Clinical Studies (14.4)].
1.3Limitations of Use The efficacy and safety of valacyclovir tablets, USP have not been established in: Immunocompromised patients other than for the suppression of genital herpes in HIV-infected patients with a CD4+ cell count ≥100 cells/mm3. Patients <12 years of age with cold sores (herpes labialis). Patients <2 years of age or ≥18 years of age with chickenpox.
Patients <18 years of age with genital herpes. Patients <18 years of age with herpes zoster. Neonates and infants as suppressive therapy following neonatal herpes simplex virus (HSV) infection.
⏱️ Dosage and Administration ▾
Valacyclovir tablets, USP may be given without regard to meals. Valacyclovir oral suspension (25 mg/mL or 50 mg/mL) may be prepared extemporaneously from 500 mg Valacyclovir tablets, USP for use in pediatric patients for whom a solid dosage form is not appropriate[see Dosage and Administration (2.3)] .
2.1Adult Dosing Recommendations Cold Sores (Herpes Labialis): The recommended dosage of valacyclovir hydrochloride for treatment of cold sores is 2 grams twice daily for 1 day taken 12 hours apart. Therapy should be initiated at the earliest symptom of a cold sore (e.g., tingling, itching, or burning). Genital Herpes: Initial Episode: The recommended dosage of valacyclovir hydrochloride for treatment of initial genital herpes is 1 gram twice daily for 10 days.
Therapy was most effective when administered within 48 hours of the onset of signs and symptoms. Recurrent Episodes: The recommended dosage of valacyclovir hydrochloride for treatment of recurrent genital herpes is 500 mg twice daily for 3 days. Initiate treatment at the first sign or symptom of an episode.
Suppressive Therapy: The recommended dosage of valacyclovir hydrochloride for chronic suppressive therapy of recurrent genital herpes is 1 gram once daily in patients with normal immune function. In patients with a history of 9 or fewer recurrences per year, an alternative dose is 500 mg once daily. In HIV-infected patients with a CD4+ cell count ≥100 cells/mm3, the recommended dosage of valacyclovir hydrochloride for chronic suppressive therapy of recurrent genital herpes is 500 mg twice daily.
Reduction of Transmission: The recommended dosage of valacyclovir hydrochloride for reduction of transmission of genital herpes in patients with a history of 9 or fewer recurrences per year is 500 mg once daily for the source partner. Herpes Zoster: The recommended dosage of valacyclovir hydrochloride for treatment of herpes zoster is 1 gram 3 times daily for 7 days. Therapy should be initiated at the earliest sign or symptom of herpes zoster and is most effective when started within 48 hours of the onset of rash.
2.2Pediatric Dosing Recommendations Cold Sores (Herpes Labialis): The recommended dosage of valacyclovir hydrochloride for the treatment of cold sores in pediatric patients ≥12 years of age is 2 grams twice daily for 1 day taken 12 hours apart. Therapy should be initiated at the earliest symptom of a cold sore (e.g., tingling, itching, or burning). Chickenpox: The recommended dosage of valacyclovir hydrochloride for treatment of chickenpox in immunocompetent pediatric patients 2 to <18 years of age is 20 mg/kg administered 3 times daily for 5 days.
The total dose should not exceed 1 gram 3 times daily. Therapy should be initiated at the earliest sign or symptom [see Use in Specific Populations (8.4), Clinical Pharmacology (12.3), Clinical Studies (14.4)].
2.3Extemporaneous Preparation of Oral Suspension Ingredients and Preparation per USP-NF: Valacyclovir tablets 500 mg, cherry flavor, and Suspension Structured Vehicle USP-NF (SSV). Valacyclovir oral suspension (25 mg/mL or 50 mg/mL) should be prepared in lots of 100 mL. Prepare Suspension at Time of Dispensing as Follows: Prepare SSV according to the USP-NF.
Using a pestle and mortar, grind the required number of Valacyclovir tablets 500 mg until a fine powder is produced (5 Valacyclovir tablets for 25 mg/mL suspension; 10 Valacyclovir tablets for 50 mg/mL suspension). Gradually add approximately 5 mL aliquots of SSV to the mortar and triturate the powder until a paste has been produced. Ensure that the powder has been adequately wetted.
Continue to add approximately 5 mL aliquots of SSV to the mortar, mixing thoroughly between additions, until a concentrated suspension is produced, to a minimum total quantity of 20 mL SSV and a maximum total quantity of 40 mL SSV for both the 25 mg/mL and 50 mg/mL suspensions. Transfer the mixture to a suitable 100 mL measuring flask. Transfer the cherry flavor* to the mortar and… [Excerpted — this section continues on DailyMed.]
⛔ Contraindications ▾
Valacyclovir hydrochloride is contraindicated in patients who have had a demonstrated clinically significant hypersensitivity reaction (e.g., anaphylaxis) to valacyclovir, acyclovir, or any component of the formulation [see Adverse Reactions (6.3)].
⚠️ Warnings and Cautions ▾
5.1Thrombotic Thrombocytopenic Purpura/Hemolytic Uremic Syndrome (TTP/HUS) TTP/HUS, in some cases resulting in death, has occurred in patients with advanced HIV disease and also in allogeneic bone marrow transplant and renal transplant recipients participating in clinical trials of Valacyclovir hydrochloride at doses of 8 grams per day. Treatment with Valacyclovir hydrochloride should be stopped immediately if clinical signs, symptoms, and laboratory abnormalities consistent with TTP/HUS occur.
5.2Acute Renal Failure Cases of acute renal failure have been reported in: Elderly patients with or without reduced renal function. Caution should be exercised when administering valacyclovir hydrochloride to geriatric patients, and dosage reduction is recommended for those with impaired renal function [see Dosage and Administration (2.4), Use in Specific Populations (8.5)]. Patients with underlying renal disease who received higher than recommended doses of valacyclovir hydrochloride for their level of renal function.
Dosage reduction is recommended when administering valacyclovir hydrochloride to patients with renal impairment [see Dosage and Administration (2.4), Use in Specific Populations (8.6)]. Patients receiving other nephrotoxic drugs. Caution should be exercised when administering valacyclovir hydrochloride to patients receiving potentially nephrotoxic drugs.
Patients without adequate hydration. Precipitation of acyclovir in renal tubules may occur when the solubility (2.5 mg/mL) is exceeded in the intratubular fluid. Adequate hydration should be maintained for all patients.
In the event of acute renal failure and anuria, the patient may benefit from hemodialysis until renal function is restored [see Dosage and Administration (2.4), Adverse Reactions (6.3)].
5.3Central Nervous System Effects Central nervous system adverse reactions, including agitation, hallucinations, confusion, delirium, seizures, and encephalopathy, have been reported in both adult and pediatric patients with or without reduced renal function and in patients with underlying renal disease who received higher than recommended doses of valacyclovir hydrochloride for their level of renal function. Elderly patients are more likely to have central nervous system adverse reactions. Valacyclovir hydrochloride should be discontinued if central nervous system adverse reactions occur [see Adverse Reactions (6.3), Use in Specific Populations (8.5, 8.6)].
🤒 Adverse Reactions ▾
The following serious adverse reactions are discussed in greater detail in other sections of the labeling: Thrombotic Thrombocytopenic Purpura/Hemolytic Uremic Syndrome [see Warnings and Precautions (5.1)]. Acute Renal Failure [see Warnings and Precautions (5.2)] . Central Nervous System Effects [see Warnings and Precautions (5.3)] .
The most common adverse reactions reported in at least 1 indication by >10% of adult patients treated with valacyclovir hydrochloride and observed more frequently with valacyclovir hydrochloride compared to placebo are headache, nausea, and abdominal pain. The only adverse reaction reported in >10% of pediatric patients <18 years of age was headache.
6.1Clinical Studies Experience in Adult Patients Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice. Cold Sores (Herpes Labialis): In clinical studies for the treatment of cold sores, the adverse reactions reported by patients receiving valacyclovir hydrochloride 2 grams twice daily (n = 609) or placebo (n = 609) for 1 day, respectively, included headache (14%, 10%) and dizziness (2%, 1%).
The frequencies of abnormal ALT (>2 x ULN) were 1.8% for patients receiving valacyclovir hydrochloride compared with 0.8% for placebo. Other laboratory abnormalities (hemoglobin, white blood cells, alkaline phosphatase, and serum creatinine) occurred with similar frequencies in the 2 groups. Genital Herpes: Initial Episode: In a clinical study for the treatment of initial episodes of genital herpes, the adverse reactions reported by ≥5% of patients receiving valacyclovir hydrochloride 1 gram twice daily for 10 days (n = 318) or oral acyclovir 200 mg 5 times daily for 10 days (n = 318), respectively, included headache (13%, 10%) and nausea (6%, 6%).
For the incidence of laboratory abnormalities see Table 2. Recurrent Episodes: In 3 clinical studies for the episodic treatment of recurrent genital herpes, the adverse reactions reported by ≥5% of patients receiving valacyclovir hydrochloride 500 mg twice daily for 3 days (n = 402), valacyclovir hydrochloride 500 mg twice daily for 5 days (n = 1,136) or placebo (n = 259), respectively, included headache (16%, 11%, 14%) and nausea (5%, 4%, 5%). For the incidence of laboratory abnormalities see Table 2.
Suppressive Therapy: Suppression of Recurrent Genital Herpes in Immunocompetent Adults: In a clinical study for the suppression of recurrent genital herpes infections, the adverse reactions reported by patients receiving valacyclovir hydrochloride 1 gram once daily (n = 269), valacyclovir hydrochloride 500 mg once daily (n = 266), or placebo (n = 134), respectively, included headache (35%, 38%, 34%), nausea (11%, 11%, 8%), abdominal pain (11%, 9%, 6%), dysmenorrhea (8%, 5%, 4%), depression (7%, 5%, 5%), arthralgia (6%, 5%, 4%), vomiting (3%, 3%, 2%), and dizziness (4%, 2%, 1%).
For the incidence of laboratory abnormalities see Table 2. Suppression of Recurrent Genital Herpes in HIV-Infected Patients: In HIV-infected patients, frequently reported adverse reactions for valacyclovir hydrochloride (500 mg twice daily; n = 194, median days on therapy = 172) and placebo (n = 99, median days on therapy = 59), respectively, included headache (13%, 8%), fatigue (8%, 5%), and rash (8%, 1%). Post-randomization laboratory abnormalities that were reported more frequently in valacyclovir subjects versus placebo included elevated alkaline phosphatase (4%, 2%), elevated ALT (14%, 10%), elevated AST (16%, 11%), decreased neutrophil counts (18%, 10%), and decreased platelet counts (3%, 0%), respectively.
Reduction of Transmission: In a clinical study for the reduction of transmission of genital herpes, the adverse reactions reported by patients receiving valacyclovir hydrochloride 500 mg once daily (n = 743) or placebo once daily… [Excerpted — this section continues on DailyMed.]
🔄 Drug Interactions ▾
No clinically significant drug-drug or drug-food interactions with valacyclovir hydrochloride are known [see Clinical Pharmacology (12.3)].
👥 Use in Specific Populations ▾
8.1Pregnancy Pregnancy Category B. There are no adequate and well-controlled studies of valacyclovir hydrochloride or acyclovir in pregnant women. Based on prospective pregnancy registry data on 749 pregnancies, the overall rate of birth defects in infants exposed to acyclovir in-utero appears similar to the rate for infants in the general population. valacyclovir hydrochloride should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
A prospective epidemiologic registry of acyclovir use during pregnancy was established in 1984 and completed in April 1999. There were 749 pregnancies followed in women exposed to systemic acyclovir during the first trimester of pregnancy resulting in 756 outcomes. The occurrence rate of birth defects approximates that found in the general population.
However, the small size of the registry is insufficient to evaluate the risk for less common defects or to permit reliable or definitive conclusions regarding the safety of acyclovir in pregnant women and their developing fetuses. Animal reproduction studies performed at oral doses that provided up to 10 and 7 times the human plasma levels during the period of major organogenesis in rats and rabbits, respectively, revealed no evidence of teratogenicity.
8.3Nursing Mothers Following oral administration of a 500 mg dose of valacyclovir hydrochloride to 5 nursing mothers, peak acyclovir concentrations (Cmax) in breast milk ranged from 0.5 to 2.3 times (median 1.4) the corresponding maternal acyclovir serum concentrations. The acyclovir breast milk AUC ranged from 1.4 to 2.6 times (median 2.2) maternal serum AUC. A 500 mg maternal dosage of valacyclovir hydrochloride twice daily would provide a nursing infant with an oral acyclovir dosage of approximately 0.6 mg/kg/day.
This would result in less than 2% of the exposure obtained after administration of a standard neonatal dose of 30 mg/kg/day of intravenous acyclovir to the nursing infant. Unchanged valacyclovir was not detected in maternal serum, breast milk, or infant urine. Caution should be exercised when valacyclovir hydrochloride is administered to a nursing woman.
8.4Pediatric Use Valacyclovir hydrochloride is indicated for treatment of cold sores in pediatric patients ≥12 years of age and for treatment of chickenpox in pediatric patients 2 to <18 years of age [see Indications and Usage (1.2), Dosage and Administration (2.2)]. The use of valacyclovir hydrochloride for treatment of cold sores is based on 2 double-blind, placebo-controlled clinical trials in healthy adults and adolescents (≥12 years of age) with a history of recurrent cold sores [see Clinical Studies (14.1)]. The use of valacyclovir hydrochloride for treatment of chickenpox in pediatric patients 2 to <18 years of age is based on single-dose pharmacokinetic and multiple-dose safety data from an open-label trial with valacyclovir and supported by efficacy and safety data from 3 randomized, double-blind, placebo-controlled trials evaluating oral acyclovir in pediatric patients with chickenpox [see Dosage and Administration (2.2), Adverse Reactions (6.2), Clinical Pharmacology (12.3), Clinical Studies (14.4)].
The efficacy and safety of valacyclovir have not been established in pediatric patients: <12 years of age with cold sores <18 years of age with genital herpes <18 years of age with herpes zoster <2 years of age with chickenpox for suppressive therapy following neonatal HSV infection. The pharmacokinetic profile and safety of valacyclovir oral suspension in children <12 years of age were studied in 3 open-label studies. No efficacy evaluations were conducted in any of the 3 studies.
Study 1 was a single-dose pharmacokinetic, multiple-dose safety study in 27 pediatric patients 1 to <12 years of age with clinically suspected varicella-zoster virus (VZV) infection [see Dosage and Administration (2.2), 64Adverse Reactions (6.2), Clinical Pharmacology (12.3), Clinical Studies (14.4)]. St… [Excerpted — this section continues on DailyMed.]
🆘 Overdosage ▾
Caution should be exercised to prevent inadvertent overdose [see Use in Specific Populations (8.5), (8.6)]. Precipitation of acyclovir in renal tubules may occur when the solubility (2.5 mg/mL) is exceeded in the intratubular fluid. In the event of acute renal failure and anuria, the patient may benefit from hemodialysis until renal function is restored [see Dosage and Administration (2.4)].
🧬 Clinical Pharmacology ▾
12.1Mechanism of Action Valacyclovir is an antiviral drug [see Clinical Pharmacology (12.4)].
12.3Pharmacokinetics The pharmacokinetics of valacyclovir and acyclovir after oral administration of valacyclovir hydrochloride have been investigated in 14 volunteer studies involving 283 adults and in 3 studies involving 112 pediatric subjects from 1 month to <12 years of age. Pharmacokinetics in Adults: Absorption and Bioavailability: After oral administration, valacyclovir hydrochloride is rapidly absorbed from the gastrointestinal tract and nearly completely converted to acyclovir and L-valine by first-pass intestinal and/or hepatic metabolism.
The absolute bioavailability of acyclovir after administration of valacyclovir hydrochloride is 54.5% ± 9.1% as determined following a 1 gram oral dose of valacyclovir hydrochloride and a 350 mg intravenous acyclovir dose to 12 healthy volunteers. Acyclovir bioavailability from the administration of valacyclovir hydrochloride is not altered by administration with food (30 minutes after an 873 Kcal breakfast, which included 51 grams of fat). Acyclovir pharmacokinetic parameter estimates following administration of valacyclovir hydrochloride to healthy adult volunteers are presented in Table 3.
There was a less than dose-proportional increase in acyclovir maximum concentration (Cmax) and area under the acyclovir concentration-time curve (AUC) after single-dose and multiple-dose administration (4 times daily) of valacyclovir hydrochloride from doses between 250 mg to 1 gram. There is no accumulation of acyclovir after the administration of valacyclovir at the recommended dosage regimens in adults with normal renal function. Table 3.
Mean (±SD) Plasma Acyclovir Pharmacokinetic Parameters Following Administration of Valacyclovir Hydrochloride to Healthy Adult Volunteers aAdministered 4 times daily for 11 days. ND = not done Dose Single-Dose Administration (N = 8) Multiple-Dose Administration a(N = 24, 8 per treatment arm) Cmax (±SD) (mcg/mL) AUC (±SD) (hr●mcg/mL) Cmax (±SD) (mcg/mL) AUC (±SD) (hr●mcg/mL) 100 mg 0.83 (±0.14) 2.28 (±0.40) ND ND 250 mg 2.15 (±0.50) 5.76 (±0.60) 2.11 (±0.33) 5.66 (±1.09) 500 mg 3.28 (±0.83) 11.59 (±1.79) 3.69 (±0.87) 9.88 (±2.01) 750 mg 4.17 (±1.14) 14.11 (±3.54) ND ND 1,000 mg 5.65 (±2.37) 19.52 (±6.04) 4.96 (±0.64) 15.70 (±2.27) Distribution: The binding of valacyclovir to human plasma proteins ranges from 13.5% to 17.9%.
The binding of acyclovir to human plasma proteins ranges from 9% to 33%. Metabolism: Valacyclovir is converted to acyclovir and L-valine by first-pass intestinal and/or hepatic metabolism. Acyclovir is converted to a small extent to inactive metabolites by aldehyde oxidase and by alcohol and aldehyde dehydrogenase.
Neither valacyclovir nor acyclovir is metabolized by cytochrome P450 enzymes. Plasma concentrations of unconverted valacyclovir are low and transient, generally becoming non-quantifiable by 3 hours after administration. Peak plasma valacyclovir concentrations are generally less than 0.5 mcg/mL at all doses.
After single-dose administration of 1 gram of valacyclovir hydrochloride, average plasma valacyclovir concentrations observed were 0.5, 0.4, and 0.8 mcg/mL in patients with hepatic dysfunction, renal insufficiency, and in healthy volunteers who received concomitant cimetidine and probenecid, respectively. Elimination: The pharmacokinetic disposition of acyclovir delivered by valacyclovir is consistent with previous experience from intravenous and oral acyclovir. Following the oral administration of a single 1 gram dose of radiolabeled valacyclovir to 4 healthy subjects, 46% and 47% of administered radioactivity was recovered in urine and feces, respectively, over 96 hours.
Acyclovir accounted for 89% of the radioactivity excreted in the urine. Renal clearance of acyclovir following the administration of a single 1 gram dose of valacyclovir hydrochloride to 12 healthy volunteers was approximately 255 ± 86 mL/min which represents 4… [Excerpted — this section continues on DailyMed.]
📦 How Supplied / Storage and Handling ▾
Valacyclovir tablets, USP (blue, film-coated, capsule-shaped, biconvex tablets) containing valacyclovir hydrochloride equivalent to 500 mg valacyclovir and debossed with "CIPLA" on one side and "153" on the other side. Bottle of 30 (NDC 69097-153-02). Bottle of 90 (NDC 69097-153-05).
Bottle of 500 (NDC 69097-153-12). Valacyclovir tablets, USP (blue, film-coated, capsule-shaped, biconvex tablets), with a partial scorebar on both sides) containing valacyclovir hydrochloride equivalent to 1 gram valacyclovir and debossed with "CIPLA"on one side and "154" on the other side. Bottle of 30 (NDC 69097-154-02).
Bottle of 90 (NDC 69097-154-05). Bottle of 500 (NDC 69097-154-12). Storage: Store at 20°C to 25°C (68°F to 77°F). [See USP Controlled Room Temperature].
Dispense in a well-closed container as defined in the USP.
📋 Description ▾
Valacyclovir hydrochloride USP is the hydrochloride salt of the L-valyl ester of the antiviral drug acyclovir. Valacyclovir tablets, USP are for oral administration. Each tablet contains valacyclovir hydrochloride USP equivalent to 500 mg or 1 gram valacyclovir and the inactive ingredients croscarmellose sodium, FD&C Blue #2, hydrogenated castor oil, hypromellose, polyethylene glycol, polysorbate 80, starch (corn), and titanium dioxide.
The chemical name of valacyclovir hydrochloride is L-valine, 2-[(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]ethyl ester, monohydrochloride. It has the following structural formula: [1] Image Valacyclovir hydrochloride USP is a white to off-white powder with the molecular formula C13H20N6O4•HCl and a molecular weight of 360.80. The maximum solubility in water at 25°C is 174 mg/mL.
The pkas for valacyclovir hydrochloride are 1.90, 7.47, and 9.43.
🔬 Clinical Studies ▾
14.1Cold Sores (Herpes Labialis) Two double-blind, placebo-controlled clinical trials were conducted in 1,856 healthy adults and adolescents (≥12 years old) with a history of recurrent cold sores. Patients self-initiated therapy at the earliest symptoms and prior to any signs of a cold sore. The majority of patients initiated treatment within 2 hours of onset of symptoms.
Patients were randomized to valacyclovir hydrochloride 2 grams twice daily on Day 1 followed by placebo on Day 2, valacyclovir hydrochloride 2 grams twice daily on Day 1 followed by 1 gram twice daily on Day 2, or placebo on Days 1 and 2. The mean duration of cold sore episodes was about 1 day shorter in treated subjects as compared with placebo. The 2 day regimen did not offer additional benefit over the 1-day regimen.
No significant difference was observed between subjects receiving valacyclovir hydrochloride or placebo in the prevention of progression of cold sore lesions beyond the papular stage.
14.2Genital Herpes Infections Initial Episode: Six hundred forty-three immunocompetent adults with first-episode genital herpes who presented within 72 hours of symptom onset were randomized in a double-blind trial to receive 10 days of valacyclovir hydrochloride 1 gram twice daily (n = 323) or oral acyclovir 200 mg 5 times a day (n = 320). For both treatment groups: the median time to lesion healing was 9 days, the median time to cessation of pain was 5 days, the median time to cessation of viral shedding was 3 days.
Recurrent Episodes: Three double-blind trials (2 of them placebo-controlled) in immunocompetent adults with recurrent genital herpes were conducted. Patients self-initiated therapy within 24 hours of the first sign or symptom of a recurrent genital herpes episode. In 1 study, patients were randomized to receive 5 days of treatment with either valacyclovir hydrochloride 500 mg twice daily (n = 360) or placebo (n = 259).
The median time to lesion healing was 4 days in the group receiving valacyclovir hydrochloride 500 mg versus 6 days in the placebo group, and the median time to cessation of viral shedding in patients with at least 1 positive culture (42% of the overall study population) was 2 days in the group receiving valacyclovir hydrochloride 500 mg versus 4 days in the placebo group. The median time to cessation of pain was 3 days in the group receiving valacyclovir hydrochloride 500 mg versus 4 days in the placebo group. Results supporting efficacy were replicated in a second trial.
In a third study, patients were randomized to receive valacyclovir hydrochloride 500 mg twice daily for 5 days (n = 398) or valacyclovir hydrochloride 500 mg twice daily for 3 days (and matching placebo twice daily for 2 additional days) (n = 402). The median time to lesion healing was about 4½ days in both treatment groups. The median time to cessation of pain was about 3 days in both treatment groups.
Suppressive Therapy: Two clinical studies were conducted, one in immunocompetent adults and one in HIV-infected adults. A double-blind, 12-month, placebo- and active-controlled study enrolled immunocompetent adults with a history of 6 or more recurrences per year. Outcomes for the overall study population are shown in Table 5.
Table 5. Recurrence Rates in Immunocompetent Adults at 6 and 12 Months aIncludes lost to follow-up, discontinuations due to adverse events, and consent withdrawn. 6 Months 12 Months Outcome Valacyclovir hydrochloride 1 gram once daily (n = 269) Oral acyclovir 400 mg twice daily (n = 267) Placebo (n = 134) Valacyclovir Hydrochloride 1 gram once daily (n = 269) Oral acyclovir 400 mg twice daily (n = 267) Placebo (n = 134) Recurrence free 55% 54% 7% 34% 34% 4% Recurrences 35% 36% 83% 46% 46% 85% Unknown a 10% 10% 10% 19% 19% 10% Subjects with 9 or fewer recurrences per year showed comparable results with valacyclovir hydrochloride 500 mg once daily.
In a second study, 293 HIV-infected adults on stable antiretroviral therapy with a history of 4 o… [Excerpted — this section continues on DailyMed.]
🧪 Nonclinical Toxicology ▾
13.3Carcinogenesis, Mutagenesis, Impairment of Fertility The data presented below include references to the steady-state acyclovir AUC observed in humans treated with 1 gram valacyclovir hydrochloride given orally 3 times a day to treat herpes zoster. Plasma drug concentrations in animal studies are expressed as multiples of human exposure to acyclovir [see Clinical Pharmacology (12.3)]. Valacyclovir was noncarcinogenic in lifetime carcinogenicity bioassays at single daily doses (gavage) of valacyclovir giving plasma acyclovir concentrations equivalent to human levels in the mouse bioassay and 1.4 to 2.3 times human levels in the rat bioassay.
There was no significant difference in the incidence of tumors between treated and control animals, nor did valacyclovir shorten the latency of tumors. Valacyclovir was tested in 5 genetic toxicity assays. An Ames assay was negative in the absence or presence of metabolic activation.
Also negative were an in vitro cytogenetic study with human lymphocytes and a rat cytogenetic study. In the mouse lymphoma assay, valacyclovir was not mutagenic in the absence of metabolic activation. In the presence of metabolic activation (76% to 88% conversion to acyclovir), valacyclovir was mutagenic.
Valacyclovir was mutagenic in a mouse micronucleus assay. Valacyclovir did not impair fertility or reproduction in rats at 6 times human plasma levels.
📄 Patient Package Insert ▾
PATIENT INFORMATION VALACYCLOVIR TABLETS, USP Read the Patient Information that comes with valacyclovir tablets, USP before you start using it and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or treatment.
Ask your healthcare provider or pharmacist if you have questions. What is valacyclovir tablets, USP? Valacyclovir tablets, USP is a prescription antiviral medicine.
Valacyclovir tablets, USP lowers the ability of herpes viruses to multiply in your body. Valacyclovir tablets, USP is used in adults: to treat cold sores (also called fever blisters or herpes labialis) to treat shingles (also called herpes zoster) to treat or control genital herpes outbreaks in adults with normal immune systems to control genital herpes outbreaks in adults infected with the human immunodeficiency virus (HIV) with CD4+ cell count greater than 100 cells/mm3 with safer sex practices to lower the chances of spreading genital herpes to others.
Even with safer sex practices, it is still possible to spread genital herpes. Valacyclovir tablets, USP used daily with the following safer sex practices can lower the chances of passing genital herpes to your partner. Do not have sexual contact with your partner when you have any symptom or outbreak of genital herpes.
Use a condom made of latex or polyurethane whenever you have sexual contact. Valacyclovir tablets, USP is used in children: to treat cold sores (for children ≥12 years of age) to treat chickenpox (for children 2 to <18 years of age). Valacyclovir tablets, USP does not cure herpes infections (cold sores, chickenpox, shingles, or genital herpes).
The efficacy of valacyclovir tablets, USP has not been studied in children who have not reached puberty. What are cold sores, chickenpox, shingles, and genital herpes? Cold sores are caused by a herpes virus that may be spread by kissing or other physical contact with the infected area of the skin.
They are small, painful ulcers that you get in or around your mouth. It is not known if valacyclovir tablets, USP can stop the spread of cold sores to others. Chickenpox is caused by a herpes virus.
It causes an itchy rash of multiple small, red bumps that look like pimples or insect bites usually appearing first on the abdomen or back and face. It can spread to almost everywhere else on the body and may be accompanied by flu-like symptoms. Shingles is caused by the same herpes virus that causes chickenpox.
It causes small, painful blisters that happen on your skin. Shingles occurs in people who have already had chickenpox. Shingles can be spread to people who have not had chickenpox or the chickenpox vaccine by contact with the infected areas of the skin.
It is not known if valacyclovir tablets, USP can stop the spread of shingles to others. Genital herpes is a sexually transmitted disease. It causes small, painful blisters on your genital area.
You can spread genital herpes to others, even when you have no symptoms. If you are sexually active, you can still pass herpes to your partner, even if you are taking valacyclovir tablets, USP. Valacyclovir tablets, USP, taken every day as prescribed and used with the following safer sex practices, can lower the chances of passing genital herpes to your partner.
Do not have sexual contact with your partner when you have any symptom or outbreak of genital herpes. Use a condom made of latex or polyurethane whenever you have sexual contact. Ask your healthcare provider for more information about safer sex practices.
Who should not take valacyclovir tablets, USP? Do not take Valacyclovir tablets, USP if you are allergic to any of its ingredients or to acyclovir. The active ingredient is valacyclovir.
See the end of this leaflet for a complete list of ingredients in valacyclovir tablets, USP. Before taking valacyclovir tablets, USP, tell your healthcare provider: About all your medical conditions, includin… [Excerpted — this section continues on DailyMed.]
📄 Package Label / Principal Display Panel ▾
515-20
Medicare Part D spend CMS · PART D · 2026 (Q1)
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