Declension table of ?gandhadravya

Neuter	Singular	Dual	Plural
Nominative	gandhadravyam	gandhadravye	gandhadravyāṇi
Vocative	gandhadravya	gandhadravye	gandhadravyāṇi
Accusative	gandhadravyam	gandhadravye	gandhadravyāṇi
Instrumental	gandhadravyeṇa	gandhadravyābhyām	gandhadravyaiḥ
Dative	gandhadravyāya	gandhadravyābhyām	gandhadravyebhyaḥ
Ablative	gandhadravyāt	gandhadravyābhyām	gandhadravyebhyaḥ
Genitive	gandhadravyasya	gandhadravyayoḥ	gandhadravyāṇām
Locative	gandhadravye	gandhadravyayoḥ	gandhadravyeṣu

Compound gandhadravya -

Adverb -gandhadravyam -gandhadravyāt