No, you cannot take any antibiotics with soy milk. Calcium has been shown to block/interfere with the absorption of antibiotics. Do not ingest any food products containing calcium unless it is 4-6 hours before taking your antibiotic. But, if you can take your antibiotics with milk (e.g. penicillin, bactrim, etc..) you can take it with soy milk. Some antibiotics couldn't be taken with calcium, like quinolones (cipro, levaquin, avelox, ..) and you should avoid soy milk 2-3 hours apart in this situation.