1 syllable:
bragh, brzeg, bugg, bugge, cb sig, chug, doug, drug, druig, dug, gss tsig, hug, hugg, jug, klug, krug, lbc ig, lug, mug, plug, plugg, plugh, pug, rug, rugg, schug, shrug, slesvig, slug, smug, snug, sprug, sugg, the agg, throg, thug, tug, ugh, zug

2 syllables:
abzug, almug, apcug, aslug, aufzug, auszug, bear-hug, bearhug, bear hug, bedrug, beer mug, betrug, bettzeug, bigbug, billbug, buttplug, darug, debug, drainplug, earplug, eilzug, fagbug, fahrzeug, fireplug, flugzeug, gelug, glowplug, goldbug, greenbug, hard drug, homeplug, humbug, junebug, kuchlug, lovebug, macsbug, male plug, meshugge, misbug, mudbug, mudug, nondrug, okrug, omfug, phone plug, prayer rug, pro-drug, prodrug, rawlplug, redbug, schlagzeug, schnellzug, sea slug, shag rug, smugmug, soft drug, sowbug, sparkplug, spark plug, spielzeug, street drug, tanjug, tausug, throw rug, umzug, unplug, wall plug, werkzeug, young thug

3 syllables:
anti-drug, antidrug, aslaug, bunny hug, cancer drug, chug-a-lug, chugalug, coffee mug, crotonbug, doodle-bug, doodlebug, europlug, feuerzeug, firebug, galmudug, instabug, jitterbug, kremenchug, ladybug, litterbug, mandelbug, mealybug, multidrug, nobiskrug, polydrug, roseslug, scatter rug, schroedinbug, semi-slug, sheevaplug, shutterbug, sparking plug, spittlebug, sulfa drug, superbug, superdrug, thunder mug, toby jug, tumblebug, ukuug, waterbug, water jug, weatherbug, whiskey jug, wonder drug, zwischenzug

4 syllables:
arenabg, astringent drug, badeanzug, designer drug, erasmusbrug, ethical drug, neubaufahrzeug, prescription drug, riesenflugzeug, sedative drug, telephone plug

5 syllables:
diuretic drug, fertility drug, medicinal drug, psychedelic drug, sweep under the rug, tcl-debug

6 syllables:
antibiotic drug, antidepressant drug

7 syllables:
antibacterial drug, hallucinogenic drug