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A MGteam Member asked a question 💭
Ontario Canada
December 13, 2025
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What cold medications are safe to take with myasthenia gravis?

When dealing with a cold, it's important to be cautious about which medications you choose. Many over-the-counter cold remedies contain ingredients that could worsen MG symptoms.

Here are some key considerations:

Antibiotics (if needed for bacterial Show Full Answer

What cold medications are safe to take with myasthenia gravis?

When dealing with a cold, it's important to be cautious about which medications you choose. Many over-the-counter cold remedies contain ingredients that could worsen MG symptoms.

Here are some key considerations:

Antibiotics (if needed for bacterial infection):
- Penicillins like amoxicillin are generally safer options
- Cephalosporins can also be used when appropriate
- Trimethoprim-sulfamethoxazole (Bactrim, Septra) is usually well tolerated

Antibiotics to avoid:
- Fluoroquinolones (ciprofloxacin, levofloxacin)
- Aminoglycosides (gentamicin, tobramycin)
- Macrolides (azithromycin, clarithromycin)
- Some tetracyclines (doxycycline, minocycline)

These can cause increased muscle weakness and worsen MG symptoms.

Important supplement warnings:
- Avoid echinacea, which is common in cold remedies and immune-support supplements. It stimulates the immune system and may worsen MG symptoms or interfere with immunosuppressive medications.
- Always check labels on cold medications, as some may contain magnesium or other ingredients that could affect your MG.

Before taking any cold medication, it's best to check with your doctor or pharmacist to ensure it's safe with your specific MG treatment plan.

December 13, 2025

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