Olive Leaf for Mild Hypertension

Mediterranean — olive leaf tea for blood pressure in Levantine and North African folk medicine

Evidence: Low–moderate — RCT found it comparable to captopril for stage-1 hypertension

Illustration: Olive (Olea europaea) branch with leaves and fruit

Illustration: Olive grove

What it is and what it is used for

Olive leaves (Olea europaea), brewed as tea or taken as extract for mild hypertension. In a 2011 trial of stage-1 hypertensives, 2 x 500 mg/day of olive leaf extract for 8 weeks lowered systolic pressure by 11.5 mmHg versus 13.7 mmHg for captopril — no significant difference between the groups — and triglycerides also fell.

Safety and disclaimers

• Additive with blood-pressure and glucose-lowering drugs — monitor levels.
• Avoid in pregnancy (limited data).
• Not a replacement for prescribed hypertension treatment.

Foraging and preparing your ingredients

Warning: illustrations and photographs alone are never enough for safe wild identification. Confirm every plant in person with a knowledgeable local expert and at least two reliable field guides before harvesting or eating anything from the wild.

Where and when to find it: Mediterranean groves and gardens. Leaves are best gathered at pruning time in late winter or spring.

Identification: Narrow, lance-shaped leaves, dark green above and silvery beneath, on gnarled evergreen trees. Compare with the captioned photos.

What to harvest: Healthy mature leaves, ideally from pruned branches.

Dangerous look-alikes: None of concern — the olive tree is unmistakable.

Harvest sustainably: Gather from pruned branches or take modest amounts; never strip a tree.

Preparing and storing:

• Rinse and pat dry.
• Dry flat in a dark, airy place until crisp.
• Store sealed up to 1 year.

Recipe

Ingredients:

• Dried olive leaves (Olea europaea), 1–2 teaspoons
• 250 ml (about 1 cup) boiling water

Preparation:

1. Steep covered for 10 minutes, then strain. The tea is pleasantly mild.

Dosage / directions: One to two cups daily. Trials used 2 x 500 mg/day of standardized extract for 8 weeks.

Folk history

The olive tree is the emblem of the Mediterranean — food, lamp oil, and medicine from a single tree for six thousand years. While the oil fed the world, the leaves were the folk remedy: Levantine and North African healers brewed them for 'high blood' long before the sphygmomanometer existed.

Scientific references

• Susalit et al. 2011 (Phytomedicine) — olive leaf extract vs captopril in stage-1 hypertension — https://www.researchgate.net/publication/47635294_Olive_Olea_europaea_leaf_extract_effective_in_patients_with_stage-1_hypertension_Comparison_with_Captopril