S2 (Inhalation)

Generic name:racepinephrine (inhalation route) [ rayse-ep-i-NEF-rin-hye-droe-KLOR-ide ]
Drug class:Adrenergic bronchodilators

Medically reviewed by Drugs.com. Last updated on May 30, 2022.

Commonly used brand name(s)

In the U.S.

• Asthmanefrin
• S2
• S-2 Inhalant

In Canada

• Vaponefrin

Available Dosage Forms:

• Solution

Therapeutic Class: Bronchodilator

Pharmacologic Class: Racepinephrine

Uses for S2

Racepinephrine inhalation is used as temporary relief for mild symptoms of a weak type of asthma, called intermittent asthma (eg, chest tightness, trouble breathing).

This medicine is available over the counter.

Before using S2

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies have not been performed on the relationship of age to the effects of racepinephrine inhalation in children younger 4 years of age. Safety and efficacy have not been established.

Geriatric

No information is available on the relationship of age to the effects of racepinephrine inhalation in geriatric patients.

Interactions with medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Interactions with food/tobacco/alcohol

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other medical problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

• Diabetes or
• Enlarged prostate or
• Glaucoma, narrow-angle or
• Heart disease, or history of or
• Hypertension (high blood pressure), or
• Seizures or
• Thyroid problems or
• Trouble urinating—Use with caution. May make these conditions worse.

Proper use of S2

This section provides information on the proper use of a number of products that contain racepinephrine. It may not be specific to S2. Please read with care.

Follow the instructions on the medicine label if you are usi...