Tab ← All covered medications
Allergy, cough & cold

Guaifenesin/Codeine Phosphate

Guaifenesin/Codeine Phosphate is a covered generic medication on Tab's $0 list. Here's what it's used for, typical dosing, and side effects, sourced from FDA-approved drug labeling.

$0 with active Tab membership Oral Expectorant [EPC]

What it's used for

This medication temporarily relieves coughs due to minor throat and bronchial irritations and helps loosen phlegm to make coughs more productive.

Source: U.S. FDA-approved prescribing information (openFDA).

Typical dosing

Adults and children 12 years and older take 10 mL every 4 hours (not exceeding 6 doses in 24 hours), while children 6 to under 12 years take 5 mL.

Dosing shown here is the general FDA-labeled range. Your prescribing clinician determines the exact dose, form, and schedule for you — this is not a substitute for medical advice.

Boxed warning / key safety info

Do not use in adults and children who have chronic pulmonary disease or shortness of breath unless directed by a doctor.

Common side effects

See full FDA prescribing information for the complete adverse reaction profile.

Covered strengths on the Tab $0 list

Guaifenesin/Codeine Phosphate 100-10 mg/5 Liquid

Covered at $0 with an active Tab membership when filled at a participating pharmacy nationwide or through mail order. A licensed clinician must prescribe the medication.

Related medications

Other allergy, cough & cold medications covered at $0 with an active Tab membership.

See the full covered list. Find yours in seconds.

Search all medications →
Tab is a membership and prescription-discount program—not insurance, and not a substitute for it. $0 pricing applies to medications on the current covered generic list with active membership, at participating pharmacy locations nationwide or through mail order, and is subject to change. Mail-order home delivery is preferred for recurring prescriptions; activation, availability, and delivery timing apply. This page is for general reference, drawn from FDA-approved drug labeling, and is not medical advice. Only a licensed clinician can determine if a medication is right for you.