OS 303 Pill — WHITE ROUND — Venlafaxine
| Imprint | OS / 303 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 0 |
| Strength | — |
| Dosage form | Tablet, Extended Release |
| Manufacturer | Osmotica Pharmaceutical Corp. |
| NDC | 42843-303 |
| Schedule | — |
| Availability | — |
| Ingredients | — |
What does this imprint mean?
The imprint "OS 303" is a code stamped or printed on the tablet or capsule by the manufacturer, used to identify the drug, its strength and the maker.
Active ingredient
Venlafaxine
Uses and warnings
BOXED WARNING: "Antidepressants increased the risk...of suicidal thinking and behavior (suicidality) in children, adolescents and young adults" in short-term studies. Strong warning about monitoring for worsening depression and suicidal thoughts, especially early in treatment or during dose changes. | Serotonin syndrome risk with concurrent use of MAOIs, triptans, tramadol, or other serotonergic drugs; "venlafaxine treatment is associated with sustained increases in blood pressure in some patients"; angle-closure glaucoma risk from pupillary dilation; seizure risk (0.26% incidence reported); hyponatremia, particularly in elderly patients; abnormal bleeding risk when combined with NSAIDs/anticoagulants.
"Venlafaxine tablets are indicated for the treatment of major depressive disorder." Used for patients whose symptoms meet DSM diagnostic criteria for major depression.
How to identify this pill
- • Check the imprint matches exactly: "OS 303".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (0) against a ruler if possible.
- • When in doubt, confirm with a pharmacist before taking any medication.
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Official references
Source: FDA Structured Product Label via NLM Pillbox archive (retired 2021); source file 8FBA17DA-573A-425B-B1D7-7DDEEEF3C957.xml