SAFE — No Known Interaction
🟢 SAFE — L-Theanine and Omeprazole can be taken together safely.
Evidence level: LIMITED
L-Theanine and Omeprazole are safe to take together. No adverse interactions have been reported in medical literature.
No clinically significant interaction between L-Theanine and Omeprazole has been documented in medical literature or FDA drug labeling.
No interaction between L-Theanine and Omeprazole has been documented. As a best practice, keep a list of everything you take — including L-Theanine — and share it with your healthcare provider at every visit. This helps them spot potential issues early.
Take Omeprazole 30 minutes before a meal — PPIs must be activated by acid pumps that turn on when you eat. L-Theanine can be taken with the meal or at a separate time. Reduced stomach acid can slightly impair protein/amino acid digestion. L-glutamine supports gut lining integrity during long-term PPI use.
Higher risk for: elderly (fracture risk, magnesium depletion), long-term PPI users (>1 year), those with osteoporosis, concurrent clopidogrel use, or those with low magnesium or B12 levels.
Proton pump inhibitors alter stomach acid and can affect absorption of other medications. Monitor when combining L-Theanine with Omeprazole. Watch for: changes in the effectiveness of either medication, persistent digestive discomfort, headache, dizziness, or signs of nutrient depletion (fatigue, muscle cramps, numbness/tingling). When to seek emergency help: Severe diarrhea (possible C. difficile), severe abdominal pain, chest pain, difficulty swallowing, persistent vomiting, or signs of low magnesium (muscle spasms, irregular heartbeat, seizures).
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
L-Theanine and Omeprazole are safe to take together. No adverse interactions have been reported in medical literature.
Take Omeprazole 30 minutes before a meal — PPIs must be activated by acid pumps that turn on when you eat. L-Theanine can be taken with the meal or at a separate time. Reduced stomach acid can slightly impair protein/amino acid digestion. L-glutamine supports gut lining integrity during long-term PPI use.
Proton pump inhibitors alter stomach acid and can affect absorption of other medications. Monitor when combining L-Theanine with Omeprazole. Watch for: changes in the effectiveness of either medication, persistent digestive discomfort, headache, dizziness, or signs of nutrient depletion (fatigue, muscle cramps, numbness/tingling). When to seek emergency help: Severe diarrhea (possible C. difficile), severe abdominal pain, chest pain, difficulty swallowing, persistent vomiting, or signs of low magnesium (muscle spasms, irregular heartbeat, seizures).
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Or browse the full interaction database (121,000+ pairs).