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(spy-no-sad) ,


(trade name)


Therapeutic: pediculocides
Pregnancy Category: B


Treatment of head lice in adults and children >4 yr.


Causes neuronal hyperexcitation in insects, resulting paralysis and death of lice.

Therapeutic effects

Eradication of head lice.


Absorption: Undetectable systemic absorption follows topical use.
Distribution: Unknown.
Metabolism and Excretion: Unknown.
Half-life: Unknown.

Time/action profile

Topicalwithin minunknownunknown


Contraindicated in: Pediatric: Children <6 mos (↑ risk of benzyl alcohol absorption).
Use Cautiously in: Obstetric: Use in pregnancy only if clearly needed; Lactation: use with caution; Pediatric: Safe and effective use in children <4 yr not established.

Adverse Reactions/Side Effects

Ear, Eye, Nose, Throat

  • ocular erythema


  • erythema


Drug-Drug interaction

None noted.


Topical (Adults and Children >4 yr) Apply amount necessary to wet scalp, leave in place for 10 minutes, then rinse; may be repeated after 7 days if live lice are still seen.


Topical suspension: 0.9% in 120 mL bottles

Nursing implications

Nursing assessment

  • Assess scalp for presence of lice and their ova (nits) prior to and 1 wk after application of spinosad.

Potential Nursing Diagnoses

Impaired home maintenance (Indications)
Bathing/hygiene self-care deficit (Indications)


  • Topical: For topical application only.

Patient/Family Teaching

  • Instruct patient/parent on correct application technique and not to change treatment without consulting health care professional. Use suspension in 1 or 2 treatments that are 1 wk apart. If live lice are seen 7 days after first application, repeat application. Shake bottle well. Cover face and eyes with a towel and keep eyes tightly closed. Use suspension only on dry scalp and dry hair. Completely cover scalp first, then apply outwards towards ends of hair. Use enough suspension to coat completely every single louse. Leave it on scalp for a full 10 min. Continue to keep eyes covered to prevent dripping into eyes. Because all lice must be covered, help with application is advised. After 10 mins, completely rinse suspension from hair and scalp with warm water. Wash hands after application. Hair may be shampooed any time after treatment.
  • Instruct patient to avoid swallowing suspension or getting suspension in eyes. If suspension gets in eyes, flush eyes thoroughly with water.
  • Advise patient/parent that others residing in the home should be examined for lice.
  • Instruct patient/parent on methods of preventing re-infestation. All clothes, including outdoor apparel and household linens, should be machine-washed using very hot water and dried for at least 20 min in a hot dryer. Soak brushes and combs in hot (130° F), soapy water for 5–10 min. Remind patient that brushes and combs should not be shared. Shampoo wigs and hairpieces. Vacuum rugs and upholstered furniture. Wash toys in hot, soapy water. Items that cannot be washed should be sealed in a plastic bag for 2 wks.
  • If patient is a child, instruct parents to notify school nurse or day care center so that classmates and playmates can be checked.
  • Advise female patient to notify health care professional if pregnancy is planned or suspected, or if breastfeeding. Lactating women may choose to pump and discard breast milk for 8 hrs after use to avoid infant ingestion.

Evaluation/Desired Outcomes

  • Absence of lice and nits.
Drug Guide, © 2015 Farlex and Partners
References in periodicals archive ?
The results were in accordance to Patil (2013) who sprayed acid lime leaves with different insecticides and proved abamectin as best chemical against citrus leafminer compared to spinosad, diafenthiuron and triazophos.
rubrocinctus the concentration ranges of the second assay varied between 0.0001 and 1 [micro]g per mL for spinosad, and between 4.10 to 1,000 [micro]g per mL for malathion and [alpha]-cypermethrin.
Nevertheless, some growers participating in the eradication efforts used a range of biopesticides including materials containing Bacillus thuringiensis and spinosad. Growers using these tools were very aware of their shorter residual effects compared to conventional pesticides and therefore timed their applications to match the predicted life cycle of EGVM, particularly in the first generation.
The prescription oral flea-killing products in this class of medications all utilize a spinosyn called spinosad.
The treatments deltamethrin, dimethoate, spinosad, fenitrothion, phosmet, malathion, methidathion, and zeta-cypermethrin caused 100 % mortality in D.
indica with seven chemical and biopesticides (imidacloprid (0.60 ml/L), spinosad (0.45 g/L), azadirachtin (1.5 ml/L), abamectin (1.25 ml/L), emamectin (0.20 ml/L), lambda-cyhalothrin (0.15 ml/L) and radiant (1.5 g/L) against Galleria mellonella was evaluated in lab.
En tres de los invernaderos evaluados se realizaron aplicaciones frecuentes de insecticidas como metamidofos, spinosad, ometoato, malation, carbofuran, bifentrina, fipronil y abamectina sin ninguna estrategia de manejo de la resistencia.
Acute lethal effect of the commercial formulation of the insecticides Imidacloprid, Spinosad y Thiocyclam hidrogenoxalate in Bombus atratus (Hymenoptera: Apidae) workers.
Tests showed that the marijuana contained levels of spinosad, an insect killer, that exceed regulations set by the Health Authority, which allows for 0.2 part per million of spinosad in marijuana.
The strongest growth stems from products demonstrating a favorable environmental profile, such as those based on Bacillus thuringiensis israelensis, Bacillus sphaericus and spinosad.
However, Mode of action of spinosad acts by disrupting binding of acetylcholine to nicotinic acetylcholine receptors at the postsynaptic cells of the nervous system [20].