GENOTROPIN (somatropin) 1.8 mg

KITSUBCUTANEOUSPfizer Laboratories Div Pfizer IncNDC: 0013-2657Updated: Mar 2026

Active Ingredient

SOMATROPIN — 1.8 mg

⚠️ 1 ingredient flagged as common allergen

Mannitol

⚠️ Yes — Mannitol

Filler/Sweetener

Glycine

Buffer/Stabilizer

Hamamelis Virginiana Top Water

Skin Conditioner

Sodium Phosphate, Monobasic, Anhydrous

Ingredient	Purpose	Common Allergen?	Description
Mannitol	Filler/Sweetener	⚠️ Yes — Mannitol	A sugar alcohol used as a sweetener and bulking agent. Can cause osmotic diarrhea in sensitive individuals.
Glycine	Buffer/Stabilizer	No	The simplest amino acid. Used as a buffer, stabilizer, and tonicity agent in injectable formulations.
Hamamelis Virginiana Top Water	Skin Conditioner	No	Witch hazel distillate, a plant-derived astringent used in topical formulations to soothe and tone the skin.
Sodium Phosphate, Monobasic, Anhydrous	—	No	—

This medication contains ingredients flagged in the following groups. Patients with these sensitivities should consult their prescriber.

Other versions of somatropin that avoid allergens found in this formulation.

Mannitol-free

Mannitol-free

Mannitol-free

Mannitol-free