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
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.
Common questions
Is guaifenesin/Codeine Phosphate covered at $0 with Tab?
Yes. Guaifenesin/Codeine Phosphate is on Tab's covered $0 generic list — every covered strength is $0 with an active membership, at participating pharmacies nationwide or by mail order.
Do I need insurance to get guaifenesin/Codeine Phosphate through Tab?
No. Tab is a membership, not insurance. Covered medications are $0 with an active membership whether or not you have a health plan.
Guaifenesin/Codeine Phosphate is $0 on the covered list
Members pay $0 for covered generics at participating pharmacies nationwide or by mail order — plus unlimited virtual primary care, urgent care and dermatology visits. No insurance needed.
Solo $49/mo · Family $119/mo for up to 4 people · Family+ $149/mo for up to 8
Start your membership → Compare plansTab is a membership and prescription-discount program, not insurance. A licensed clinician must prescribe any medication. Cancel anytime — no renewal.