Revidox-LB
✅ Treats bacterial infections
✅ Restores gut balance
✅ Supports immune function
✅ Reduces inflammation
✅ Maintains digestive health
Revidox-LB contains Doxycycline and Lactic Acid.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
💡 Quick Answer
Revidox-LB contains doxycycline 100 mg + Lactobacillus probiotic, used for urinary tract infections (UTIs), with an added probiotic to reduce antibiotic-associated GI disturbance and yeast overgrowth. Follow local resistance patterns — empirical prescribing without culture is common but requires attention to regional E. coli resistance data. Complete the full course even if symptoms resolve quickly.
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What Is Revidox-LB?
Revidox-LB is a branded generic of doxycycline 100 mg + Lactobacillus probiotic, an oral antibiotic formulation commonly used for UTIs and other bacterial infections. Manufactured by Mankind Pharma.
The added lactobacillus probiotic is intended to reduce antibiotic-associated vaginal or GI disturbance — some evidence of benefit for vaginal flora preservation during tetracycline or broad-spectrum courses.
Clinical Uses
- STI-associated urethritis / cervicitis: chlamydia, non-gonococcal urethritis (doxycycline is first-line per CDC 2021).
- Pelvic inflammatory disease (PID): as part of combination regimen.
- Complicated UTIs: when susceptibility allows.
- Acne vulgaris: long-term low-dose.
- Malaria prophylaxis: specific regions.
- Tick-borne infections: Lyme disease, Rocky Mountain spotted fever.
How to Take
- Swallow with water, generally with food to reduce GI upset.
- For UTI: complete the full course (3 days for uncomplicated cystitis, up to 14 days for complicated infections) even if symptoms resolve.
- Stay well hydrated.
- Doxycycline specific: take upright with plenty of water; wait at least 30 minutes before lying down (oesophageal irritation risk). Avoid sun exposure (photosensitivity).
- Separate from calcium, iron, magnesium, zinc by 2 hours — chelation reduces absorption.
- If no improvement after 48–72 hours, return for urine culture + sensitivity testing — possible resistance.
Side Effects
Common: nausea, diarrhoea, photosensitivity, oesophagitis if taken lying down.
Significant: tooth discolouration in children under 8 (contraindicated), C. difficile colitis, candidiasis (vaginal yeast).
Rare: benign intracranial hypertension, severe hepatotoxicity, Stevens-Johnson, autoimmune hepatitis with prolonged use.
Who Should Not Take Revidox-LB
- Pregnancy — contraindicated (fetal tooth discoloration, bone deposition)
- Children under 8 (tooth staining)
- Breastfeeding (relative — small amounts in milk)
- Severe liver impairment
- Known hypersensitivity to the active
Resistance Patterns and When to Culture
E. coli resistance rates vary regionally. In the US/UK, trimethoprim-sulfamethoxazole resistance is often 25–30% for community UTI isolates — making it a second-line rather than first-line empirical choice in many guidelines. Nitrofurantoin and fosfomycin often have lower resistance rates. Always request a urine culture + sensitivity when: recurrent UTIs, pyelonephritis, pregnancy, treatment failure, men with UTI, complicated UTI, or recent antibiotic use.
Storage
Store at room temperature (15–25 °C). Keep tablets in original blister, away from moisture. Keep out of reach of children.
Frequently Asked Questions
How fast will my UTI symptoms improve?
Symptoms typically improve within 24–48 hours. Complete the full course (3 days for uncomplicated UTI) even if you feel better — stopping early risks recurrence and resistance.
What if the antibiotic doesn't work?
Symptoms persisting after 48–72 hours suggest resistance or wrong diagnosis. Return for urine culture + sensitivity. Do not start a second antibiotic without cultures.
Is it normal to get a yeast infection after antibiotics?
Common, especially with broad-spectrum antibiotics that disrupt vaginal flora. Topical or oral antifungal (fluconazole 150 mg single dose) resolves it. Probiotic combinations aim to reduce this risk.
Can I take Revidox-LB in pregnancy?
No — doxycycline is contraindicated in pregnancy (fetal effects). Use alternatives (amoxicillin, nitrofurantoin, cephalexin).
Can I drink alcohol?
No strong interaction, but heavy alcohol can worsen GI side effects and delay recovery. Moderate intake is generally OK.
Do I need to finish the whole course?
Yes. Stopping early when symptoms resolve leaves residual bacteria that can re-establish infection and select for resistance.
Can I take Revidox-LB with birth control pills?
Most antibiotics (except rifampicin/rifabutin) do NOT reduce OCP efficacy despite old advice. Continue your usual pills.
Why might I keep getting UTIs?
Recurrent UTIs (≥2/6 months or ≥3/year) warrant investigation — sex as trigger, post-menopausal atrophy, anatomical issues, diabetes, residual bacteria from incomplete treatment. Post-coital prophylaxis, nightly low-dose prophylaxis, or vaginal estrogen (post-menopause) are options.
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⚕️ Medical Disclaimer: Information is educational and does not replace medical advice. Consult a clinician before starting, stopping, or changing any medication, particularly for cancer therapy, hormonal treatments, and prescription products.
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| Strength | 100 mg |
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