This is mabye a crazy idea but have you asked your doctor?
I'd also ask each time you're prescribed antibiotics if they're absolutely necessary. (maybe you've done that already)
This.
For the OP: You’ve probably been given unnecessary antibiotics regardless, both by doctors and dentists - the latter group is notorious for overprescribing.
Ear infections in adults are mostly viral and self limited - usually don’t require antibiotics.
Orthopedic procedures only require a single dose 30 minutes prior to incision, unless the surgical site is already infected.
Dentistry depends, but many dentists are behind the times regarding prophylactic antimicrobials in people with heart valve problems and/or artificial joints.
All tend to prescribe courses that are too long, based on the calendar, rather than actual evidence (ie. give 1-2 week prescriptions pretty arbitrarily).
As far as restoring healthy flora, the evidence for probiotics is mixed.
Here is a review.
Background: Probiotics are commonly used for the prevention of antibiotic-associated diarrhea (AAD). However, the optimum regimen remains controversial.
Objective: The objective of this article is to compare and rank the relative efficacy and tolerability among all available probiotic agents for AAD through a network meta-analysis.
Methods: Eligible studies were identified by searching PubMed, Embase, Medline, Cochrane library and Web of Science for randomized controlled trials (RCTs) that examined the efficacy of probiotic therapy for AAD. A random-effects model was applied within a frequentist framework. Quality of evidence was performed by the GRADE approach. The project was prospectively registered with PROSPERO (CRD 42016050776).
Results: Fifty-one articles (60 comparisons, 9569 participants), including 10 probiotic interventions, were identified. Lactobacillus rhamnosus GG (LGG) had the highest probability of being ranked best both in effectiveness (odds ratio (OR), 95% confidence interval (CI) = 0.28 (0.17, 0.47)) and tolerance (0.44 (0.23, 0.84)) on prevention of AAD. With regard to reducing Clostridium difficileinfection rate, Lactobacillus casei (L. casei) was considered better efficacy (0.04 (0.00, 0.77)) and medium tolerance (0.56 (0.19, 1.66)). Strain combination reported no superiority over single strain in either efficacy or tolerability.
Conclusions: LGG is probably the best option to consider when AAD is indicated. L. casei appears to be the most efficacious choice when associated with severe C. difficile-related cases.
Tl;dr For preventing antibiotic associated diarrhea (presumably the result of altered flora) use probiotics containing
Lactobacillus rhamnosus GG.
On a more general note, eating a healthy diet, rich in high fiber fruits and veggies, is probably just as important for a healthy gut. I haven’t seen great data supporting things like yogurt, kefir, or any specific food being superior to eating a balanced diet.
Also realize the nutraceutical industry is poorly regulated, so any probiotic, or supplement for that matter, may or may not contain exactly what it advertises. FWIW, we use Culturelle in the hospital - it contains
Lactobacillus rhamnosus GG.
Lastly, what about your gut health concerns you, specifically? The microbiome has become a buzzword in medical literature and lay press in recent years, but the science of keeping it healthy remains in its infancy.