L-theanine in South Africa: evidence and shop labels

South African shelves treat L-theanine as a complementary medicine or a health supplement, not as a registered cure. The Dis-Chem Gold page says so in the sentence SAHPRA requires: this unregistered medicine has not been evaluated by SAHPRA for its quality, safety or intended use. That sentence is the point of the row, not a footnote. The trials are a separate file, and they do not turn an unregistered capsule into a treatment.

What the label is allowed to imply

SAHPRA's complementary-medicine framework allows low-risk wording while registration is still outstanding: general health enhancement, health maintenance, or relief of minor symptoms that are not tied to a named disease. High-risk claims, including treating a disease or saying a product is clinically proven, are a different category and can be called in. The Advertising Regulatory Board is the advertising layer. A Clicks marketing line about focus, relaxation and sleep is the retailer's language. EFSA's 2011 opinion, which is not South African law, is the primary assessment that those health claims were not established on the evidence then supplied.

The human trials are modest. A systematic review of L-theanine supplements concluded that 200–400 mg a day might reduce stress and anxiety under a stressful condition, and that chronic stress had not been shown. Hidese studied 200 mg at night for four weeks in 30 healthy adults and reported better sleep-questionnaire scores than placebo on some subscales. A 2025 meta-analysis of 18 trials found a small improvement in subjective sleep quality (standardised mean difference 0.43, interval 0.04 to 0.83) and said pure L-theanine still needed more study. Attention meta-analyses find short-term differences, larger when caffeine is added, with uncertain intervals. Established means we can say the questionnaires moved in small trials. It does not mean a sleep disorder or an anxiety disorder has a proven capsule.

Those study amounts are a description of methods. Gold's capsule is 250 mg, one a day, which sits near the lower end of the stress-trial range. Prozen's Suntheanine capsule is 100 mg, and the Clicks page allows one or two a day, up to six. Six capsules would be 600 mg, which is above the range the stress review described. That is a label fact and a reason to read the maximum, not a suggestion to take six. GNC's product name says 200 mg and the pack is 60 capsules. The Clicks page did not include a facts panel or a direction line, so the serving is not stated here.

Side effects and who should avoid it

Gold's page says it is not for under-18s and that people with a medical condition or on other medicines should ask a practitioner. Prozen is a nutritional supplement page with a maximum of six capsules, which is a wide range for a product studied more often at one or two hundred milligrams. Pregnancy and breastfeeding were not the Hidese population. Speak to an HPCSA-registered clinician before you start it alongside medicine. Call 10177 for an ambulance, or 112 from a mobile phone. Clicks copy for the GNC bottle talks about focus, relaxation and sleep in the same breath. SAHPRA's low-risk category can cover general health and minor symptoms. It does not cover a promise that a capsule treats an anxiety disorder or insomnia. The Advertising Regulatory Board is where an advert that overreaches would be judged. Price is the other trap. Gold's special price was about R100 for 60 capsules of 250 mg. GNC's 200 mg bottle was R517 for 60. The dearer bottle is not a better trial. Suntheanine, the ingredient named on Prozen and used in the Hidese trial, is a specific L-theanine. Sharing a trademark with a trial is not the same as repeating the trial. A reader in Johannesburg and a reader in Cape Town see the same national retailers and the same SAHPRA sentence. What changes is stock and the member price. We quoted the figure on the page, not a loyalty estimate. If the special price disappears, the page is wrong until someone checks it again. That is why the date sits on the table. It is also why this is not a best-of list. This is not a best-of list. There is no hands-on test, no score, and no disease claim. Find a Pro is the practitioner directory. A capsule page should not invent a doctor to bless it. Prozen's maximum of six 100 mg capsules is 600 mg, which is above the 200–400 mg a day range the stress review described. The page allows that maximum. We are reporting it so a reader sees the label, not so anyone takes six. Gold's one-a-day 250 mg capsule is the closer match to Hidese's method, and closeness is not a recommendation. Check the bottle you actually buy, because formulations change and a screenshot from last month is not this page.

How the table is ordered

Labels checked November 2026 on Dis-Chem and Clicks. A special price is quoted next to the other figure on the same page. Member-only discounts that were not a single number are not treated as the price. The order follows the criteria. It is not a score. Call 10177 for an ambulance, or 112 from a mobile phone. Speak to an HPCSA-registered clinician before you start a capsule alongside medicine. Nothing on this page is a personal dose. Hidese studied 200 mg a day for four weeks in 30 healthy adults. EFSA's 2011 opinion found no cause and effect for cognition, stress, sleep or menstrual discomfort. A Clicks or Dis-Chem price is not a SAHPRA registration. Prices can change. The unregistered-medicine line on the Dis-Chem page is the status of that product.