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Asthma & respiratory

Theophylline Anhydrous

Theophylline Anhydrous 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 Methylxanthine [EPC]

What it's used for

Theophylline is used to treat symptoms and reversible airflow obstruction associated with chronic asthma and other chronic lung diseases like emphysema and chronic bronchitis.

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

Typical dosing

Extended-release tablets of 400 or 600 mg can be taken once daily in the morning or evening, and are recommended to be taken with meals.

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

Theophylline should be used with extreme caution in patients with active peptic ulcer disease, seizure disorders, or certain cardiac arrhythmias due to the risk of worsening these conditions.

Common side effects

Mild side effects at lower concentrations include nausea, vomiting, headache, and insomnia, while higher concentrations can cause severe effects like persistent vomiting, heart rhythm problems, and seizures.

Covered strengths on the Tab $0 list

Theophylline Anhydrous 100mg Tablet 12-Hour ErTheophylline Anhydrous 200mg Tablet 12-Hour Er

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

Albuterol SulfateBenzonatateFlunisolideFluticasoneIpratropium BromideMontelukast

Other asthma & respiratory medications covered at $0 with an active Tab membership.

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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.