Aveida (ivermectin/metronidazole)
Acne Antibiotics Topical Gel (Gram)
Last reviewed · Source: First Databank (FDB) drug data
Overview
Ivermectin, a semisynthetic, avermectin-derivative, is used topically as a pediculicide.
Metronidazole is a synthetic, nitroimidazole-derivative antibacterial and antiprotozoal agent and also has direct anti-inflammatory effects and effects on neutrophil motility, lymphocyte transformation, and some aspects of cell-mediated immunity.
Ivermectin is a semisynthetic, avermectin-derivative used as an anthelmintic, pediculicide, and scabicide. Avermectins are macrocyclic lactones isolated from the fermentation products of Streptomyces avermitilis and are similar to macrolide antibacterials but possess no antibacterial properties. Ivermectin is a mixture of 2 chemically modified avermectins: at least 90% is 22,23-dihydroavermectin B1a (H2B1a) and less than 10% is 22,23-dihydroavermectin B1b (H2B1b).
Ivermectin binds selectively and with high affinity to glutamate-gated chloride ion channels in invertebrate nerve and muscle cells, leading to an increase in the permeability of the cell membrane to chloride ions with hyperpolarization of the cell leading to paralysis and death of the parasite. Ivermectin also appears to interact with other ligand-gated chloride channels, such as those gated by gamma-aminobutyric acid (GABA).
Topically applied ivermectin is pediculicidal, but is not ovicidal. In vitro studies indicate that ivermectin has activity against human head lice (Pediculus humanus capitis) and has shown activity against a permethrin-resistant strain. Topical administration has resulted in death of nearly all newly hatched nymphs and adult lice within 48 hours.
There is some evidence suggesting that ivermectin may interfere with louse mouthparts, resulting in impaired feeding in treated lice.
For the topical treatment of pediculosis capitis (head lice infestation), ivermectin is commercially available as a 0.5% lotion in a vehicle that includes olive oil, oleyl alcohol, Crodalan AWS, lanolin alcohol, cyclomethicone, shea butter, sodium citrate, sorbitan tristearate, methylparaben, propylparaben, and citric acid. The lotion is off-white to tan in color.
Low concentrations of ivermectin are absorbed following topical application. Following a single topical application of ivermectin 0.5% lotion in 20 children (6 months to 3 years of age) with head lice infestation, the mean peak plasma concentration of the drug was 0.24 ng/mL (lower limit of quantitation 0.05 ng/mL) and the mean area under the concentration-time curve (AUC) was 6.7 hrxng/mL. These values are lower than those observed following an oral dose of 165 mcg/kg of ivermectin.
Systemically absorbed ivermectin is metabolized in the liver, principally by CYP3A4, and eliminated almost exclusively in feces.
Generic name: ivermectin/metronidazole
Drug class: Acne Antibiotics
Therapeutic class: Dermatological
Reference product & biosimilars
No reference, biosimilar or interchangeable associated with this drug.
Today’s intelligence on Aveida
Indications
No indications are available for this drug.
Dosing
Patients with severe hepatic disease metabolize metronidazole slowly, which can result in the accumulation of the drug and its metabolites in plasma. Therefore, the manufacturers recommend that metronidazole vaginal gel be used with caution in patients with severe hepatic disease.
Metronidazole is applied topically to the skin or intravaginally in appropriate formulations.
No dosing information is available for this tab.
No dosing information is available for this tab.
Drug interactions
Drug interaction studies have not been performed to date with ivermectin 0.5% lotion.
Because metronidazole can be absorbed systemically following intravaginal application, the possibility that drug interactions could occur with this route of administration should be considered. Small amounts of metronidazole may be absorbed systemically following topical application to the skin, but the likelihood of systemic interactions following topical administration of the drug is less than with oral or parenteral administration.
There are no contraindication interactions for this drug.
There are no severe interactions for this drug.
There are no moderate interactions for this drug.
Contraindications
The manufacturer states there are no contraindications to use of ivermectin 0.5% lotion.
- Cockayne syndrome
There are no severe contraindications for this drug.
- Blood dyscrasias
Adverse reactions
Conjunctivitis, ocular hyperemia, eye irritation, dandruff, dry skin, and burning skin sensation were reported in less than 1% of patients 6 months of age or older after a single 10-minute topical application of ivermectin 0.5% lotion.
Rare or Very Rare
- Allergic dermatitis
- Dyspnea
- Hypertension
- Ocular irritation
- Peripheral neuropathy
- Skin rash
More Frequent
- Headache disorder
- Pharyngitis
- Upper respiratory infection
Less Frequent
- Dry skin
- Skin irritation
- Stinging of skin
Rare or Very Rare
- Conjunctival hyperemia
- Contact dermatitis
- Contact dermatitis
- Dandruff
- Dry skin
- Eye tearing
- Ocular redness
- Pruritus of skin
- Skin irritation
- Stinging of skin
- Treatment site sequelae
Precautions
No enhanced messaging available.
Safety and efficacy of ivermectin 0.5% lotion have not been established in children younger than 6 months of age. Because these young children have a greater skin surface area to body mass ratio and potentially immature skin barrier, systemic absorption may be increased and children younger than 6 months of age may be at increased risk of ivermectin toxicity. Ivermectin 0.5% lotion should not be used in children younger than 6 months of age.
The lotion should be kept out of the reach of children and should be used only under the direct supervision of an adult.
Category C. (See Users Guide)
No fetotoxicity was observed in rats or mice receiving oral administration of metronidazole at dosages 200 or 20 times the usual dosage, respectively. In addition, reproduction studies in pregnant mice using oral metronidazole doses about 6 times the maximum recommended human dose (on a mg/m2 basis) have not revealed evidence of fetotoxicity or teratogenicity; however, intrauterine deaths have occurred following intraperitoneal administration of the drug. The fetal risk, if any, with the use of topical or vaginal metronidazole gel in pregnant women currently is not known. Metronidazole crosses the placenta and is rapidly distributed into fetal circulation. There have been no adequate and controlled studies to date using oral, IV, topical, or intravaginal metronidazole in pregnant women. Because animal reproduction studies are not always predictive of human response and because oral metronidazole has been shown to be carcinogenic in some rodents, topical metronidazole preparations or the vaginal gel should be used in pregnant women only when clearly needed.
Screening and/or treatment for bacterial vaginosis in pregnant women as clinically indicated should be conducted during the first prenatal visit. Although some experts state that intravaginal therapy may be used solely for symptomatic relief (and not for prevention of adverse pregnancy outcomes) in women at low risk for preterm delivery, other experts prefer use of systemic therapy for all pregnant women, regardless of degree of risk for complications of pregnancy, because systemic treatment may be required to eradicate upper genital tract infection that may be associated with bacterial vaginosis. For the treatment of bacterial vaginosis and reduction in the incidence of adverse pregnancy outcomes associated with bacterial vaginosis (e.g., preterm birth), particularly in pregnant women at high risk for complications of pregnancy, a 7-day regimen of oral metronidazole or a 7-day regimen of oral clindamycin is recommended.
Orally administered ivermectin is distributed into milk in low concentrations. Since it is not known if ivermectin is distributed into milk following topical administration, the 0.5% lotion should be used with caution in nursing women.
Following oral administration, metronidazole is distributed into milk in concentrations similar to those attained in plasma. Although plasma concentrations of metronidazole following topical or intravaginal administration are lower than those achieved after oral administration of the drug, it is not known whether metronidazole distributes into milk following topical or intravaginal application. Therefore, because oral metronidazole has been shown to be carcinogenic in some rodents, a decision should be made whether to discontinue nursing or topical or intravaginal metronidazole, taking into account the importance of the drug to the woman.
Clinical studies of ivermectin 0.5% lotion did not include sufficient numbers of patients 65 years of age or older to determine whether geriatric patients respond differently than younger adults; other clinical experience has not identified differences in response between geriatric and younger patients.
ICD codes
No ICD codes are available for this drug.
Formulary status
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Last reviewed · Source: First Databank (FDB) drug data
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