Tongkat ali in human studies: how many participants there were, how long the supplementation lasted, and what was actually measured. No dosage recommendations for the reader.

Limits from the German KCanG law, Czech thresholds effective from January 1, 2026, and penalties under Article 55 for transport across the border. Regulations read from the source.

Aronia or elderberry for immunity? A comparison of composition, mechanisms, and strength of evidence, with numbers sourced from the literature and a correction of a popular unit error.

Mucuna pruriens contains levodopa and as of April 4, 2024, it is prohibited for use in dietary supplements in Poland. What studies have shown and what the real interactions are.

As of July 28, 2026, the Polish list of controlled substances names delta-8 and delta-10 THC. We check the regulation, the origin of these products, and FDA data.

Akuamma alkaloids act on opioid receptors, but recent research challenges its pain-relieving effects. What do the measurements say and what is the legal status of the seeds?

White mulberry and DNJ: what was really measured in studies on postprandial glycemia, body mass, and HbA1c, what doses were administered, and when hypoglycemia is a risk.

KOWR register instead of a permit, 1 ha for personal use, control of 10 percent of producers, and a fine under Article 65. The regulations are read in the consolidated text of the Act.

Assessing CBD flower by sight, smell, and touch, and what to really look for in the test certificate. Why the result of THC alone does not determine the legality of the flower.

Glycemic and insulin index of sweeteners in one table: erythritol, xylitol, stevia, maltitol. What studies say about glycemia, heart health, and children's safety.

Field horsetail and silicon for hair and nails. What does the EU monograph allow, how much silica is actually absorbed, and what are the risks of confusing it with marsh horsetail.

Carbon filters for joints: what they adsorb, what they do not stop at all, how much carbon they contain inside, and why they do not make smoking safe. Data from studies.