Doctor's BEST L-Theanine Suntheanine 150 mg Veggie Capsules 90 — Calm Focus, Non-GMO Vegan

Doctor's Best L-Theanine with Suntheanine delivers 150 mg of pure L-theanine per veggie capsule to support a calm, focused state without drowsiness.

This supplement uses Suntheanine, a patented and pure form of the amino acid L-theanine found naturally in green tea. Formulated in easy-to-swallow vegetarian capsules, this product is Non-GMO, gluten free, soy free, and vegan-friendly. It’s designed for people who want gentle support for relaxation, mental clarity, and attention during demanding days, without impairing alertness.

How can this L-theanine supplement help me on busy or stressful days?

L-theanine is commonly used to encourage a relaxed mental state while allowing you to stay alert and functional. Many users take it when facing tight deadlines, meetings, or concentrated study sessions to help reduce the feeling of tension without sedation. It’s a single-ingredient approach that pairs well with daily routines and cognitive tasks.

• 150 mg Suntheanine per capsule for consistent dosing
• Supports relaxation without promoting sleepiness
• Useful before or during focus-intensive work or study
• Vegetarian capsules fit diverse dietary needs

When is the best time to take Doctor's Best L-Theanine for results?

Timing depends on your goal: take a capsule before a stressful event to encourage calm, or use it during long work or study sessions to maintain steady attention. Because it doesn’t typically cause drowsiness, many people find it flexible for daytime use, including before commutes or client meetings.

• Take with or without food—versatile for different routines
• Can be used acutely before a high-pressure situation
• Also suitable for repeated daytime doses if needed
• Not formulated as a sleep aid—avoid late-night use if you notice sleepiness

What are the product’s key features and ingredient details?

This formula centers on Suntheanine, a single, standardized form of L-theanine to ensure predictable potency. Each vegetarian capsule contains 150 mg of Suntheanine and no unnecessary fillers, and the product is made to accommodate common dietary restrictions.

• 150 mg pure Suntheanine (L-theanine) per veggie capsule
• 90 vegetarian capsules per bottle for long-lasting supply
• Non-GMO, gluten free, soy free, and vegan-friendly
• Manufactured by Doctor's Best with science-backed quality controls

Are there any lifestyle considerations or interactions to keep in mind?

L-theanine is generally well tolerated, but you should consider any personal sensitivities and existing medications. If you use prescription drugs, are pregnant, breastfeeding, or have a medical condition, consult your healthcare provider before starting a new supplement. Store the bottle in a cool, dry place and follow the label’s recommended use.

• Consult a healthcare professional if on medications or during pregnancy
• Follow the recommended serving size on the label
• Keep out of reach of children
• Store away from heat and moisture for best shelf life

Who is this for: Doctor's Best L-Theanine with Suntheanine is suited for adults seeking non-sedating support for relaxation and mental clarity. It’s aimed at professionals, students, or anyone with an active lifestyle who wants a pure, standardized L-theanine supplement in a vegan-friendly capsule. If you prefer single-ingredient formulas and brands that emphasize scientific sourcing and quality control, this product fits those priorities.

Ingredients

L-Theanine (as Suntheanine) 150 mg, Microcrystalline cellulose, modified cellulose (vegetarian capsule.)