Sports Research® L-Theanine Supplement with Caffeine & Coconut MCT Oil - Focused Energy, Alertness & Relaxation Without Drowsiness - 200mg L Theanine, 100mg Organic Caffeine - 60 Liquid Softgels
$0.38/serving
Price verified Apr 22, 2026
Not evaluated by the FDA · Individual results may vary · Consult a healthcare provider before use
Our verdict
200mg L-theanine + 100mg caffeine per softgel of L-Theanine (as Alphawave) 200mg + Organic Caffeine (as PurCaf) 100mg per liquid softgel from Sports Research. Best for people seeking calm, focused…
Why we recommend this
This is the ideal upgrade over plain L-theanine capsules for people who want calm focus rather than raw stimulation. The Alphawave + PurCaf combination uses premium, characterized ingredients that deliver the same intervention studied in peer-reviewed research. The MCT oil base adds synergy for keto and low-carb users. 3,398 reviews at 4.5 stars confirm reliable results.
Check for interactions
Already taking other supplements or prescription medications? Add them below to check for documented interactions, severity, and clinical guidance.
Our database currently documents 137+ supplement and drug-category interaction pairs. Combinations not flagged here may still interact — always consult your healthcare provider before combining supplements, especially with prescription medications.
What to watch out for
The fixed caffeine dose means this product isn't stackable for those who already consume caffeine from coffee or pre-workout — doing so risks excessive caffeine intake. It also can't be used as a standalone sleep or evening anxiety supplement due to the 100mg caffeine content.
Dose & form
- Serving
- 200mg L-theanine + 100mg caffeine per softgel
- Form
- Liquid Softgel
- Clinical range
- 100-200 mg daily
- Dose adequacy
- Therapeutic
- Supply
- 60 servings · $0.38/serving
- UPC
- 023249012269
Who it's best for
People seeking calm, focused energy from the science-backed 2:1 L-theanine to caffeine ratio
Who should skip it
Caffeine-sensitive individuals or those who supplement caffeine separately and need theanine only
Pros
- Exact 2:1 L-theanine:caffeine ratio matching the clinical research protocol
- Alphawave and PurCaf are trademarked, standardized ingredient forms — not commodity extracts
- Coconut MCT oil carrier supports absorption and adds a mild energy substrate
- Liquid softgel delivers ingredients faster than pressed tablets
Cons
- 100mg caffeine is meaningful — not suitable for those sensitive to caffeine or taking later in the day
- Cannot be used as pure theanine supplement — caffeine is always included
- 60-count at $22.95 is a 2-month supply — moderate cost-per-day
What customers say
4.5★ across 3,398 Amazon reviews. The most common questions from shoppers: re any potential interactions with medications, re any side effects from long-term use, and cause any digestive issues or side effects. Full answers in the FAQ below.
Frequently Asked Questions
What is the clinical dose for L-Theanine (as Alphawave) 200mg + Organic Caffeine (as PurCaf) 100mg?
What is the clinical dose for L-Theanine (as Alphawave) 200mg + Organic Caffeine (as PurCaf) 100mg?
Clinical trials typically use 100-200 mg daily. Sports Research L-Theanine with Caffeine & Coconut MCT Oil delivers 200mg L-theanine + 100mg caffeine per softgel, which we classify as Therapeutic relative to that range.
How does Sports Research L-Theanine with Caffeine & Coconut MCT Oil compare to similar Liquid Softgel?
How does Sports Research L-Theanine with Caffeine & Coconut MCT Oil compare to similar Liquid Softgel?
See the "Also consider" section below for two alternatives. Choose based on form preference (Liquid Softgel vs alternatives), dose adequacy, and third-party testing.
Is Sports Research L-Theanine with Caffeine & Coconut MCT Oil third-party tested?
Is Sports Research L-Theanine with Caffeine & Coconut MCT Oil third-party tested?
Yes — Yes — Non-GMO tested, Vegan Certified. Third-party testing verifies ingredient identity and label accuracy.
Does this work with Amazon Subscribe & Save?
Does this work with Amazon Subscribe & Save?
Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.
Are there any potential interactions with medications?
Are there any potential interactions with medications?
The 100mg caffeine in each softgel can interact with stimulant medications (ADHD drugs, decongestants) and may reduce efficacy of sedatives or sleep medications. L-theanine itself has minimal interaction potential. Individuals taking MAOIs, beta-blockers, or adenosine-based medications should consult their physician before use.
Are there any side effects from long-term use?
Are there any side effects from long-term use?
L-theanine has an excellent long-term safety profile with no known adverse effects at 200mg daily. Chronic caffeine use at 100mg daily is within the range considered safe for most adults (under 400mg/day total). Monitor total daily caffeine intake from all sources to avoid exceeding recommended limits with long-term use.
Does it cause any digestive issues or side effects?
Does it cause any digestive issues or side effects?
Most users tolerate this formula well, with the liquid softgel format being gentle on the stomach. Caffeine can cause GI irritation in sensitive individuals, but 100mg is a low-moderate dose. The MCT oil may cause loose stools in those unaccustomed to MCT supplementation — starting with one softgel daily is advisable for MCT-naive users.
Can it be taken with other supplements or vitamins?
Can it be taken with other supplements or vitamins?
This product can be stacked with vitamins, minerals, and non-stimulant supplements freely. It should NOT be combined with other caffeinated products (coffee, pre-workout, energy drinks) without tracking total daily caffeine. Pairing with omega-3s, magnesium glycinate, or adaptogens complements the calm-focus mechanism.
Are there any specific instructions for taking it safely?
Are there any specific instructions for taking it safely?
Take in the morning or early afternoon — the 100mg caffeine makes evening use inadvisable for those sensitive to caffeine and sleep disruption. Take with or without food. Do not exceed one softgel per dose and monitor total daily caffeine from all sources. Not recommended for pregnant or nursing women, children, or those with caffeine sensitivity.
How long until benefits are typically experienced?
How long until benefits are typically experienced?
The acute focus and calm-alertness effects of L-theanine + caffeine are typically felt within 30–60 minutes of ingestion. Unlike standalone caffeine, the theanine counteracts jitteriness and promotes a smoother, more sustained alertness window of 3–5 hours. No extended loading period is required — benefits are experienced from the first dose.
Also consider
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