When to take Aged Garlic Extract
Also known as Allium sativum, AGE, aged garlic
Aged garlic extract has no proven best time of day, so take it at the same time daily; one main trial had people take it in the evening with food. Trials gave it every day for 2 to 3 months, so give it months, not days.
Last reviewed October 13, 2026
Timing
| Best time | Any time of day |
|---|---|
| Food | With or without food |
| Fat-soluble | No |
- Any time; consistency matters more than timing.
- In the AGE at Heart trial, people took their capsules in the evening with food.
- Mild stomach side effects in trials mostly happened in the first week.
Check with your doctor first if…
- Blood thinners (like warfarin) or aspirin: NCCIH says garlic supplements may raise the risk of bleeding. One small trial of aged garlic extract with warfarin found no added bleeding, but ask your doctor before combining them.
- Surgery: tell your doctors you take garlic before any surgery, because of the bleeding risk.
- Pregnancy or breastfeeding: garlic in amounts above normal food may not be safe. Ask your doctor first.
- Allergy: avoid garlic if you are allergic to garlic or related plants such as onion, leek or chives.
- Side effects: garlic supplements can cause breath and body odor, stomach pain, gas and nausea. In aged garlic trials, some people had reflux, burping or bloating.
Amounts studied
Aged garlic extract trials used about 480 mg of concentrated extract powder or 1.2 g of extract powder a day (both giving 1.2 mg of S-allyl cysteine) for about 12 weeks. In one trial, 240 mg a day was not enough and 960 mg a day worked no better than 480 mg.
Follow the serving size on your product’s label.
What the research says
| Area | Evidence | Summary |
|---|---|---|
| Normal blood pressure | Limited | Garlic has been studied for supporting normal blood pressure. In a review of 12 trials (553 adults), readings that were already in the normal range did not change, and NCCIH calls the garlic evidence limited.[2] |
| Healthy cholesterol levels | Limited | Garlic has been studied for supporting healthy cholesterol levels. NCCIH says garlic supplements may have a small effect on total and LDL cholesterol; most of that research used garlic supplements in general, not only aged garlic extract.[1] |
| Immune function | Limited | A 2022 review found only two small studies hinting that garlic might help with colds, and both had weaknesses.[1] |
Questions
Should I take aged garlic at night?
No study shows one time is better. In one main trial, people took it in the evening with food. Pick a time you can stick with every day.
Can I take aged garlic with blood thinners?
Ask your doctor first. NCCIH warns that garlic supplements may raise bleeding risk. One small trial found aged garlic extract did not add to bleeding in people on warfarin, but that is not enough to skip the check.
How long does aged garlic take to work?
Trials gave it daily for 2 to 3 months, so judge it over months, not days. In those trials, readings that were already in the normal range did not change.
Will aged garlic give me garlic breath?
It can. NCCIH lists breath and body odor as garlic supplement side effects. In aged garlic trials, some people noticed a garlic taste, burping or reflux, mostly in the first week.
Can I take aged garlic every day?
Aged garlic trials gave it daily for about 12 weeks, and most people tolerated it well. NCCIH notes that garlic taken by mouth has been used safely in studies lasting up to 7 years.
Plan your whole routine
Add Aged Garlic Extract and everything else you take to the planner to see your morning, midday and evening, and what to keep apart.
Open the plannerFrom AT2A
Sources
- Garlic: Usefulness and Safety, NCCIH (accessed October 13, 2026)
- Garlic lowers blood pressure in hypertensive subjects, improves arterial stiffness and gut microbiota: A review and meta-analysis (Ried, Exp Ther Med 2020), PubMed Central (accessed October 13, 2026)
- Aged garlic extract reduces blood pressure in hypertensives: a dose-response trial (Eur J Clin Nutr 2013), PubMed Central (accessed October 13, 2026)
- The effect of aged garlic extract on blood pressure and other cardiovascular risk factors in uncontrolled hypertensives: the AGE at Heart trial (Integr Blood Press Control 2016), PubMed Central (accessed October 13, 2026)
- Garlic (Drugs and Lactation Database, LactMed), NIH National Library of Medicine (accessed October 13, 2026)
These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. It is general information, not medical advice: talk with your doctor or pharmacist before starting a supplement, especially if you are pregnant, breastfeeding, take medicine or have a health condition.