acyclovir

Manufacturer
Northwind Pharmaceuticals
Effective date
2014-06-04
Label type
HUMAN PRESCRIPTION DRUG LABEL
Version
1
Source
legacy-cache
Hydrated at
2026-08-02 01:35:57

Label at a glance#

Productacyclovir
Active ingredientACYCLOVIR
Label structure4 sections

Indications and uses

INDICATIONS AND USAGE Herpes Zoster Infections Acyclovir is indicated for the acute treatment of herpes zoster (shingles). Genital Herpes Acyclovir is indicated for the treatment of initial episodes and the management of recurrent episodes of genital herpes. Chickenpox Acyclovir is indicated for the treatment of chickenpox (varicella)

Label contents#

Full prescribing information#

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

NDC: 51655-099-51

MFG: 61442-113-01

Acyclovir 800 MG

40 Tablets

Rx Only

Lot#:

Exp. Date:

Each tablet contains Acyclovir USP....800 MG

Dosage: See package insert

Store between 68-77 degrees F.

Protect form moisture. Store in a tight, light-resistant container (See USP).

Keep out of the reach of children.

Mfg by: Carlsbad Technologies, Inc Carlsbad, CA 92008 Lot #:

Repackaged by Northwind Pharmaceuticals, Indianapolis, IN 46256

Acyclovir 800 mg 51655-099Acyclovir 800 mg 51655-099

Indications and Usage

INDICATIONS & USAGE SECTION

INDICATIONS AND USAGE

Herpes Zoster Infections

Acyclovir is indicated for the acute treatment of herpes zoster (shingles).

Genital Herpes

Acyclovir is indicated for the treatment of initial episodes and the management of recurrent episodes of genital herpes.

Chickenpox

Acyclovir is indicated for the treatment of chickenpox (varicella)

Information for patients

INFORMATION FOR PATIENTS SECTION

Patients are instructed to consult with their physician if they experience severe or troublesome adverse reactions, they become pregnant or intend to become pregnant, they intend to breast feed while taking orally administered acyclovir, or they have any other questions. Patients should be advised to maintain adequate hydration.

Herpes Zoster: There are no data on treatment initiated more than 72 hours after onset of the zoster rash. Patients should be advised to initiate treatment as soon as possible after a diagnosis of herpes zoster.

Genital Herpes Infections: Patients should be informed that acyclovir is not a cure for genital herpes. There are no data evaluating whether acyclovir will prevent transmission of infection to others. Because genital herpes is a sexually transmitted disease, patients should avoid contact with lesions or intercourse when lesions and/or symptoms are present to avoid infecting partners. Genital herpes can also be transmitted in the absence of symptoms through asymptomatic viral shedding. If medical management of a genital herpes recurrence is indicated, patients should be advised to initiate therapy at the first sign or symptom of an episode.

Chickenpox: Chickenpox in otherwise healthy children is usually a self-limited disease of mild to moderate severity. Adolescents and adults tend to have more severe disease. Treatment was initiated within 24 hours of the typical chickenpox rash in the controlled studies, and there is no information regarding the effects of treatment begun later in the disease course

Adverse Reactions

ADVERSE REACTIONS SECTION

Herpes Simplex

Short-Term Administration: The most frequent adverse events reported during clinical trials of treatment of genital herpes with acyclovir 200 mg administered orally 5 times daily every 4 hours for 10 days were nausea and/or vomiting in 8 of 298 patient treatments (2.7%). Nausea and/or vomiting occurred in 2 of 287 (0.7%) patients who received placebo.

Long-Term Administration: The most frequent adverse events reported in a clinical trial for the prevention of recurrences with continuous administration of 400 mg (two 200-mg capsules) 2 times daily for 1 year in 586 patients treated with acyclovir were nausea (4.8%) and diarrhea (2.4%). The 589 control patients receiving intermittent treatment of recurrences with acyclovir for 1 year reported diarrhea (2.7%), nausea (2.4%), and headache (2.2%).

Herpes Zoster

The most frequent adverse event reported during 3 clinical trials of treatment of herpes zoster (shingles) with 800 mg of oral acyclovir 5 times daily for 7 to 10 days in 323 patients was malaise (11.5%). The 323 placebo recipients reported malaise (11.1%).

Chickenpox

The most frequent adverse event reported during 3 clinical trials of treatment of chickenpox with oral acyclovir at doses of 10 to 20 mg/kg 4 times daily for 5 to 7 days or 800 mg 4 times daily for 5 days in 495 patients was diarrhea (3.2%). The 498 patients receiving placebo reported diarrhea (2.2%).

Observed During Clinical Practice

In addition to adverse events reported from clinical trials, the following events have been identified during post-approval use of acyclovir. Because they are reported voluntarily from a population of unknown size, estimates of frequency cannot be made. These events have been chosen for inclusion due to either their seriousness, frequency of reporting, potential causal connection to acyclovir, or a combination of these factors.

General: Anaphylaxis, angioedema, fever, headache, pain, peripheral edema.

Nervous: Aggressive behavior, agitation, ataxia, coma, confusion, decreased consciousness, delirium, dizziness, dysarthria, encephalopathy, hallucinations, paresthesia, psychosis, seizure, somnolence, tremors. These symptoms may be marked, particularly in older adults or in patients with renal impairment.

Digestive: Diarrhea, gastrointestinal distress, nausea.

Hematologic and Lymphatic: Anemia, leukocytoclastic vasculitis, leukopenia, lymphadenopathy, thrombocytopenia.

Hepatobiliary Tract and Pancreas: Elevated liver function tests, hepatitis, hyperbilirubinemia, jaundice.

Musculoskeletal: Myalgia.

Skin: Alopecia, erythema multiforme, photosensitive rash, pruritus, rash, Stevens-Johnson syndrome, toxic epidermal necrolysis, urticaria.

Special Senses: Visual abnormalities.

Urogenital: Renal failure, renal pain (may be associated with renal failure), elevated blood urea nitrogen, elevated creatinine, hematuria

FDA-Initiated Inactive NDC Indexing#

NDC, Effective, Action table
NDCEffectiveActionDocumentIndexing SPLRelated label
51655-099-512026-01-13C16284748780-19d75b9cf-ef84-f424-e053-dadaa90a57ce49bacf64-4707-4ffe-90fa-0cf883aa065f
51655-099-512020-01-31C16284748780-19d75b9cf-ef84-f424-e053-dadaa90a57ce49bacf64-4707-4ffe-90fa-0cf883aa065f

DailyMed Dashboard NDC Coverage#

NDC, Dashboard title, SPL version table
NDCDashboard titleSPL versionValidationDashboard ZIP
51655-099ACYCLOVIR TABLET [NORTHWIND PHARMACEUTICALS]1Legacy NDC20140617_49bacf64-4707-4ffe-90fa-0cf883aa065f.zip

DailyMed Billing Units#

Package NDC, Billing unit, Product NDC table
Package NDCBilling unitProduct NDCDailyMed indexing SPLSPL versionEffective
61442-113-01EA - Each61442-113abc21be5-d6b8-4f73-9330-b70c48e1bf7a12012-07-24
61442-113-05EA - Each61442-113afa8952f-c4ff-43be-8ef0-8c2bf72fa89212012-07-24

DailyMed Socrata Ingredients#

Ingredient, Type, UNII table
IngredientTypeUNIISPL versionUploaded
ACYCLOVIRACTIVE INGREDIENTX4HES1O11F1
ACYCLOVIRACTIVE MOIETYX4HES1O11F1

Products#

Every source-derived product name is available through these pages.

DailyMed product names page 1 of 1 · 1 matching rows.

NDC Codes#

Product NDC, Package NDC table
Product NDCPackage NDC
51655-09951655-099-51
61442-113

Ingredients#

Every source-derived ingredient row is available through these pages.

DailyMed ingredient rows page 1 of 1 · 1 matching rows.

Name, UNII, Kind table
NameUNIIKind
ACYCLOVIRX4HES1O11FACTIB

Source Document#

Source XML

Orange Book application contexts#

All distinct exact application/product contexts derived from this label’s complete NDC list are paginated below.

Orange Book application contexts page 1 of 1 · 1 matching rows.

Source provenance: Browse the complete Orange Book source catalog · source snapshot 43.

Orange Book products#

Current product rows page 1 of 1 · 2 matching rows.

Application-product, Trade name, Ingredient table
Application-productTrade nameIngredientStrengthDosage form / routeTE codesRLD / RSApproval date
A075382-001ACYCLOVIRACYCLOVIR400MGTABLET / ORALAB1999-04-30
A075382-002ACYCLOVIRACYCLOVIR800MGTABLET / ORALAB1999-04-30

Therapeutic equivalence codes#

Current TE-code rows page 1 of 1 · 2 matching rows.

Application-product, TE code table
Application-productTE code
A075382-001AB
A075382-002AB

Observed Orange Book product history#

Observed FDA ZIP history: Each table is queried independently by exact application/product key from successfully parsed Orange Book snapshots. Capture times identify archived source observations; absence or a change between snapshots is not inferred. FDA publication files that were not recoverable as structured ZIP data are not represented as states.

Product history page 1 of 3 · 86 observed states.

Captured, Edition, Application-product table
CapturedEditionApplication-productTrade nameStrengthDosage form / routeProduct TE source textRLD / RSApproval dateSource SHA-256
2026-09-14 22:38:342026-08A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-3084e616aacf4f…
2026-09-14 22:38:342026-08A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-3084e616aacf4f…
2026-08-18 06:07:402026-07A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30caaa826d4ba7…
2026-08-18 06:07:402026-07A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30caaa826d4ba7…
2026-02-19 14:30 UTC2026-02A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30011fe1cb6892…
2026-02-19 14:30 UTC2026-02A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30011fe1cb6892…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-3031067a03dcf5…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-3031067a03dcf5…
2025-08-23 18:47 UTC2025-08A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-306a471c1ec25d…
2025-08-23 18:47 UTC2025-08A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-306a471c1ec25d…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30fd3edfee7708…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30fd3edfee7708…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30b8a1b40f171c…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30b8a1b40f171c…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-3003ed91905a0d…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-3003ed91905a0d…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-302680178bc6a6…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-302680178bc6a6…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-305bbf6a4d5a75…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-305bbf6a4d5a75…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30d8e5a09893c0…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30d8e5a09893c0…
2024-10-29 15:01 UTC2024-10A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30d06236e962d9…
2024-10-29 15:01 UTC2024-10A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30d06236e962d9…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-3079d66fd596c7…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-3079d66fd596c7…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-30301d65b070ca…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-30301d65b070ca…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-301e350fbaab3a…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-301e350fbaab3a…
2024-05-31 18:47 UTC2024-05A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-308072bd15b7f6…
2024-05-31 18:47 UTC2024-05A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-308072bd15b7f6…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-305c6f7cd8ea54…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-305c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-305d02ea3f76ae…
2022-04-08 23:34 UTC2022-04A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-305d02ea3f76ae…
2022-04-04 05:41 UTC2022-04A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-304b0b4de00fa7…
2022-04-04 05:41 UTC2022-04A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-304b0b4de00fa7…
2019-12-13 00:20 UTC2019-12A075382-001ACYCLOVIR400MGTABLET / ORALAB1999-04-3074a2ff9319b5…
2019-12-13 00:20 UTC2019-12A075382-002ACYCLOVIR800MGTABLET / ORALAB1999-04-3074a2ff9319b5…

Observed Orange Book normalized TE history#

Normalized TE history page 1 of 3 · 86 observed states.

Captured, Edition, Application-product table
CapturedEditionApplication-productTE codeOrderSource SHA-256
2026-09-14 22:38:342026-08A075382-001AB184e616aacf4f…
2026-09-14 22:38:342026-08A075382-002AB184e616aacf4f…
2026-08-18 06:07:402026-07A075382-001AB1caaa826d4ba7…
2026-08-18 06:07:402026-07A075382-002AB1caaa826d4ba7…
2026-02-19 14:30 UTC2026-02A075382-001AB1011fe1cb6892…
2026-02-19 14:30 UTC2026-02A075382-002AB1011fe1cb6892…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12A075382-001AB131067a03dcf5…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12A075382-002AB131067a03dcf5…
2025-08-23 18:47 UTC2025-08A075382-001AB16a471c1ec25d…
2025-08-23 18:47 UTC2025-08A075382-002AB16a471c1ec25d…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03A075382-001AB1fd3edfee7708…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03A075382-002AB1fd3edfee7708…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02A075382-001AB1b8a1b40f171c…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02A075382-002AB1b8a1b40f171c…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01A075382-001AB103ed91905a0d…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01A075382-002AB103ed91905a0d…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12A075382-001AB12680178bc6a6…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12A075382-002AB12680178bc6a6…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09A075382-001AB15bbf6a4d5a75…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09A075382-002AB15bbf6a4d5a75…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11A075382-001AB1d8e5a09893c0…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11A075382-002AB1d8e5a09893c0…
2024-10-29 15:01 UTC2024-10A075382-001AB1d06236e962d9…
2024-10-29 15:01 UTC2024-10A075382-002AB1d06236e962d9…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08A075382-001AB179d66fd596c7…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08A075382-002AB179d66fd596c7…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07A075382-001AB1301d65b070ca…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07A075382-002AB1301d65b070ca…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06A075382-001AB11e350fbaab3a…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06A075382-002AB11e350fbaab3a…
2024-05-31 18:47 UTC2024-05A075382-001AB18072bd15b7f6…
2024-05-31 18:47 UTC2024-05A075382-002AB18072bd15b7f6…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06A075382-001AB15c6f7cd8ea54…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06A075382-002AB15c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04A075382-001AB15d02ea3f76ae…
2022-04-08 23:34 UTC2022-04A075382-002AB15d02ea3f76ae…
2022-04-04 05:41 UTC2022-04A075382-001AB14b0b4de00fa7…
2022-04-04 05:41 UTC2022-04A075382-002AB14b0b4de00fa7…
2019-12-13 00:20 UTC2019-12A075382-001AB174a2ff9319b5…
2019-12-13 00:20 UTC2019-12A075382-002AB174a2ff9319b5…

openFDA label cross-check#

OpenFDA label data provides additional search and identifier links. DailyMed’s Structured Product Label is the canonical label on FDA.report. Matching records are deduplicated before they are shown below.

Matched openFDA labels page 1 of 1 · 2 matching rows.

Brand, Generic, Manufacturer table
BrandGenericManufacturerSPL set IDEffective dateAvailable safety fieldsJoin
47e3b3d3-ee08-5a34-e063-6294a90adb5149bacf64-4707-4ffe-90fa-0cf883aa065f2026-01-08Adverse reactionsExact identifier
spl set id: 49bacf64-4707-4ffe-90fa-0cf883aa065f
AcyclovirACYCLOVIRCarlsbad Technology, Inc.a68e610a-841c-4b69-9233-673d060561e82024-08-26Warnings, Adverse reactionsExact identifier
ndc (product): 61442-113

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.