A538 4 mg (Guanfacine Hydrochloride Extended-Release 4 mg)
Pill with imprint A538 4 mg is Blue, Capsule-shape and has been identified as Guanfacine Hydrochloride Extended-Release 4 mg. It is supplied by Par Pharmaceutical Inc.
Guanfacine is used in the treatment of adhd; high blood pressure and belongs to the drug class antiadrenergic agents, centrally acting. There is no proven risk in humans during pregnancy. Guanfacine 4 mg is not a controlled substance under the Controlled Substances Act (CSA).
Images for A538 4 mg

Guanfacine Hydrochloride Extended-Release
- Imprint
- A538 4 mg
- Strength
- 4 mg
- Color
- Blue
- Shape
- Capsule-shape
- Availability
- Prescription only
- Drug Class
- Antiadrenergic agents, centrally acting
- Pregnancy Category
- B - No proven risk in humans
- CSA Schedule
- Not a controlled drug
- Labeler / Supplier
- Par Pharmaceutical Inc.
- National Drug Code (NDC)
- 10370-0538 (Discontinued)
- Inactive Ingredients
-
FD&C Blue No. 1,
hypromelloses,
polyvinyl acetate phthalate,
povidone k12,
sodium lauryl sulfate,
silicon dioxide,
lactose monohydrate,
magnesium stearate,
microcrystalline cellulose
Note: Inactive ingredients may vary.
More about guanfacine
- Side effects
- Drug interactions
- Dosage information
- During pregnancy or Breastfeeding
- Reviews (280)
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- En español
- Drug class: antiadrenergic agents, centrally acting
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- Drug Information
- Guanfacine (Advanced Reading)
- Guanfacine Extended-Release Tablets
- Guanfacine Tablets
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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.