Floating a metered-dose inhaler is not an accurate measure of remaining medicine.
Plaut
Thomas F
TF
D018926:Anti-Allergic Agents / Q000008:administration & dosage*; D004205:Cromolyn Sodium / Q000008:administration & dosage*; D006801:Humans; D009330:Nebulizers and Vaporizers; D017835:Nedocromil / Q000008:administration & dosage*
D018926:Anti-Allergic Agents; D017835:Nedocromil; D004205:Cromolyn Sodium