b 4 138 (Galantamine 4 mg)
Pill imprint b 4 138 has been identified as Galantamine hydrobromide 4 mg.
Galantamine is used in the treatment of alzheimer's disease and belongs to the drug class cholinesterase inhibitors. There is no proven risk in humans during pregnancy. Galantamine 4 mg is not subject to the Controlled Substances Act.
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