Independent · evidence-based · non-judgmentalDraft · pending medical review
Not yet medically reviewed — information on this site is in preparation and has not been verified by a medical reviewer.

Pill finder · 76 catalogued versions

isoniazid

Pill catalog

Rx/OTC variants · openFDA + DailyMed (public domain) · draft, pending review

This drug comes in 76different versions. Make sure you’re looking at the right one — use the search above to find your exact pill by imprint, color, or shape.

Showing 76 of 76 variants

EFF 27
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
Isoniazid 300 MILLIGRAM in 1 TABLET
Imprint
EFF 27
Color
WHITE
Shape
ROUND
Score
1
Form
C42998
NDC
159 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
584 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
0071 ↗ · 2026-06-18
West ward
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
West ward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
6203 ↗ · 2026-06-18
EFF 26
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
Isoniazid 100 MILLIGRAM in 1 TABLET
Imprint
EFF 26
Color
WHITE
Shape
ROUND
Score
1
Form
C42998
NDC
158 ↗ · 2026-06-18
?
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Unknown — pending review
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
866 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
2920 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
1109 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
1261 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0066 ↗ · 2026-06-18
E 4354
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
E 4354
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
4351 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
Westward 260
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
1260 ↗ · 2026-06-18
E 4354
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
E 4354
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
318 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
013 ↗ · 2026-06-18
071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
isoniazid 300 mg;
Imprint
071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
333 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
553 ↗ · 2026-06-18
E 4350
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
E 4350
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
8927 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0579 ↗ · 2026-06-18
?
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg
Imprint
Unknown — pending review
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
742 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
960 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
1491 ↗ · 2026-06-18
E 4350
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
E 4350
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
626 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0066 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
108 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
951 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
2942 ↗ · 2026-06-18
E 4350
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
E 4350
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
585 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
033 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
Westward 260
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
016 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
124 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
928 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
2416 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
9405 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0369 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
7655 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
1655 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
1
Form
C42998
NDC
391 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
0275 ↗ · 2026-06-18
E 4350
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
E 4350
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
4350 ↗ · 2026-06-18
?
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
Unknown — pending review
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
865 ↗ · 2026-06-18
?
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Unknown — pending review
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
627 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
978 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
2509 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
218 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
9116 ↗ · 2026-06-18
E 4350
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
E 4350
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
710 ↗ · 2026-06-18
LAN 1109
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
LAN 1109
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
158 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
906 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
121 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0410 ↗ · 2026-06-18
E 4354
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
E 4354
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
393 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
354 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
2576 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
1041 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
027 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
0071 ↗ · 2026-06-18
?
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Unknown — pending review
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
145 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
463 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
786 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
087 ↗ · 2026-06-18
E 4354
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
E 4354
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
680 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
960 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
3707 ↗ · 2026-06-18
260
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
260
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
777 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
083 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
Westward 260
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
055 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
0595 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
0370 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
395 ↗ · 2026-06-18
Westward 2
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
Westward 261
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
1422 ↗ · 2026-06-18
E 4354
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
E 4354
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
709 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
960 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
2304 ↗ · 2026-06-18
b 071 300
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 300 mg;
Imprint
b 071 300
Color
WHITE
Shape
OVAL
Score
2
Form
C42998
NDC
984 ↗ · 2026-06-18
b 066 100
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
b 066 100
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
0096 ↗ · 2026-06-18
260
Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.
Strength
ISONIAZID 100 mg;
Imprint
260
Color
WHITE
Shape
ROUND
Score
2
Form
C42998
NDC
777 ↗ · 2026-06-18