Ran out of clindamycin 300 for very bad tooth infection. have pentrexl 500 can i take them and how often?

Yes: yes. You can take them every 8 hours for now,but the clindamycin 300 is more specific for the problem you're having

Better Choice: See a local dentist. Antibiotics will not solve your dental problem. Let your dentist manage your infection.

Need prof care: Antibiotics will not cure an infected tooth, just limit the spread of infection until antibiotic wears off. Antibiotics should be taken as directed, which means you shouldn't have any left over just sitting around in your medicine cabinet. You need to see a Dentist NOW. Make it a priority.

See a dentist: antibiotics will not cure your infection. You need to see a dentist and get the tooth treated. Do not self medicate. You can do more harm than good.

See your Dentist: You might need a different antibiotic or an emergency dental treatment. For temporary relief you can take OTC NSAIDs or Tylenol (acetaminophen). The only way to cure a dental infection is with dental treatment.