2 syllables:
blocks in, boksen, boxen, box in, broxson, clocks in, coxen, coxon, dockson, fox in, locsin, moxon, noxon, oxen, rocks in, roxanne, shocks in, stocks in, talks in, tocsin, toxin, toxine, wachsen, walks in, woxen

3 syllables:
alloxan, centoxin, crotoxin, cytoxan, desoxyn, digoxin, dioxan, dioxin, dioxine, eltroxin, erwachsen, gitoxin, lanoxin, linoxin, linoxyn, mefoxin, naproxen, rhizoxin, suboxone, thyroxin, wilcoxen, wilcoxon, zhaoxin, zootoxin

4 syllables:
aflatoxin, amatoxin, anatoxin, anatoxine, antitoxin, antitoxine, apitoxin, autotoxin, baptitoxine, biotoxin, brevetoxin, bufotoxin, bungarotoxin, caramboxin, cicutoxin, ciguatoxin, cortodoxone, cytotoxin, difenoxin, digitoxin, endotoxin, ergotoxine, exotoxin, ferredoxin, flavodoxin, genotoxin, gerontoxon, gliotoxin, hemotoxin, latrotoxin, lymphotoxin, maitotoxin, mycotoxin, mydatoxin, myotoxin, necrotoxin, nephrotoxin, neurotoxin, ochratoxin, palytoxin, paraoxon, peptotoxine, phallotoxin, phytotoxin, picrotoxin, pyrotoxin, rubratoxin, rubredoxin, sapotoxin, sitotoxin, spermatoxin, tinyatoxin, typhotoxin, tyrotoxine, vincetoxin, vomitoxin

5 syllables:
batrachotoxin, charybdotoxin, cyanotoxin, embryotoxin, enterotoxin, excitotoxin, grayanotoxin, hepatotoxin, ichthyotoxin, immunotoxin, poneratoxin, staphylotoxin, tetrodotoxin, thioredoxin, urechitoxin

6 syllables:
anaphylatoxin, anaphylotoxin, andromedotoxin, autocytotoxin, bacteriotoxin, botulismotoxin, podophyllotoxin, toxin-antitoxin, toxin antitoxin

7 syllables:
buprenorphine/naloxone, resiniferatoxin

8 syllables:
oxycodone/naloxone

2 syllables:
opsin, auction, dobson, godson, option

3 syllables:
adoption, call option, co-option, concoction, decoction, put option, rhodopsin, stock option

4 syllables:
covered option, default option, local option, naked option

5 syllables:
incentive option

6 syllables:
incentive stock option