Intravenous Antibiotics Helpful for PTLDS
Intravenous antibiotics for PTLDS may improve symptoms for some patients with post-treatment Lyme disease syndrome. A meta-analysis of randomized clinical trials found that intravenous ceftriaxone showed better results than placebo for fatigue severity in patients with persistent Lyme disease symptoms.
Meta-Analysis Examines Intravenous Antibiotics for PTLDS
In their study, “Efficacy and safety of antibiotic therapy for post-Lyme disease? A systematic review and network meta-analysis,” Zhang and colleagues reviewed randomized clinical trials evaluating antibiotic therapy for patients with post-treatment Lyme disease syndrome (PTLDS).1
The meta-analysis included four randomized controlled trials involving 485 subjects who met the following criteria:
- Randomized controlled trial design
- Persistent symptoms for at least six months after treatment of Lyme disease
- Positive IgG Western blot confirming previous infection
- Adults aged 18 years or older
- Studies comparing antibiotics with placebo controls
Ceftriaxone Improved Fatigue Scores
The investigators reported that intravenous ceftriaxone performed better than placebo when measured using the Fatigue Severity Scale (FSS-11).
“FSS-11 is the most widely used scale to measure the fatigue severity of the subjects,” wrote Zhang and colleagues.
The authors concluded that:
“Ceftriaxone treatment may be the best choice for antibiotic treatment of PTLD.”
The systematic review therefore suggests that intravenous antibiotics for PTLDS, particularly ceftriaxone, may provide clinical benefit for some patients.
Evidence From an NIH Clinical Trial
An earlier NIH-sponsored randomized clinical trial also found benefit with intravenous ceftriaxone therapy. Fallon and colleagues demonstrated that IV antibiotic treatment improved cognitive function in patients with Lyme encephalopathy in the short term.2
However, clinical trials have not consistently shown improvement in all symptoms. For example, studies did not demonstrate significant gains in:
- Beck Depression Inventory scores
- Mental Health Scale
- Physical Functioning Scale
Similarly, oral doxycycline did not show significant benefit in these trials.
Limitations of the PTLDS Antibiotic Trials
Zhang and colleagues acknowledged several limitations of the available research:
- The number of randomized trials remains small
- Treatment duration and dosing varied between studies
- Follow-up periods differed among trials
These differences make it difficult to draw firm conclusions regarding optimal treatment strategies.
I have been reluctant to accept the term PTLDS until reliable tests can rule out persistent infection. This meta-analysis supports the possibility that ongoing infection may explain persistent symptoms in some patients.
Implications for Persistent Lyme Disease
The findings raise important questions regarding the mechanisms behind persistent Lyme symptoms. Some researchers believe that ongoing symptoms may be related to persistent infection, while others attribute symptoms to immune or inflammatory processes.
Further research is needed to clarify whether prolonged antibiotic therapy may benefit selected patients with persistent Lyme disease symptoms.
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Podcast: Post-Treatment Lyme Disease Syndrome Cases
References:
- Zhang X, Jiang Y, Chen Y, et al. Efficacy and safety of antibiotic therapy for post-Lyme disease? A systematic review and network meta-analysis. BMC Infect Dis. 2023.
- Fallon BA, Keilp JG, Corbera KM, et al. A randomized, placebo-controlled trial of repeated IV antibiotic therapy for Lyme encephalopathy. Neurology. 2008.
Dr. Daniel Cameron, MD, MPH
Lyme disease clinician with over 30 years of experience and past president of ILADS.
Symptoms • Testing • Coinfections • Recovery • Pediatric • Prevention
I was on i.v. picc line for LD treatment after participating in LD vaccine clinical trials 1995-1996. I nearly died if it weren’t for Sam Donta! Study trial docs were condescending and in denial of my symptoms. After 4 mos on i.v. ceftriaxone I was so.. much better As was my 10 year old son.. born with Bartonella & suffered for years. 5th grade was my son best year! To see the before & after i.v. therapy results of Spec scans (brain) was nothing short of amazing!! I def wouldn’t be here if not for this treatment. Im just sorry not enough influential people LISTENED 28 years ago!!
So sorry you had to go through this. And happy that your child is well. May I ask if he has sustained remission from bartonella? I did not know that ceftriaxone could hit bartonella.
Hi there and thanks much for your work. My question would concern the specific bacteria bartonella and the fact(?) that this microbe seems to only respond to the rif’s -rifampin and the other. Bartonella is such a prevalent (and very hard to eradicate) “co-infection” that it has been postulated it could be the “primary” infection.
Good afternoon Doctor.Hope all is fine. My IgG immunoblot test was positive for the next three antigens: Flagellin (p41), OspC (OspC), p83 (p83). IgM immunoblotting was borderline for: Flegellin Borrelia afzelii (p41), OspC Borrelia afzelii (OspC Ba); OspC Borrelia burgdorferi (OspC Bb), OSpC Borrelia garinii (OspC Bg). No any doctor said that it can be conisdered as Lyme 100% ,but also not declined a possibility. But i never seen a tick bite.
I was treated for 30 days by Doxy and joints pain has gone. However two month after i still have muscle twitching in the calves 24/7 non stop. And motor nerve involvement shown in EMG. Nerve conduction study has shown slight difference in signals but not critical.
Now i was suggested to make a second round of AB (after 2 month from previous treatment) ; Ceftriaxone 21d + oral Doxy. Does the Ceftriaxone injection to the muscles have same effect as IV ? Thank you.
I am not sure IM has the same benefit of IV. Moreover it is difficult to administer 2,000 mg of intravenous ceftriaxone as a IM treatment.