Outcomes

What goji actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Sharpen visual clarity Likely modest benefit

Pick out finer detail, edges, and text more easily.

1 study n=114 25 g 13 wk #2/4

29977809

small

1 study n=114

25 g

13 wk

#2 /4

Protect vision in retinal disease Likely modest benefit

Keeps sight sharper and retinal signals healthier when disease threatens.

1 study n=114 25 g 13 wk #2/5

29977809

small

1 study n=114

25 g

13 wk

#2 /5

Raise protective carotenoid levels Not enough research

Plant pigments reach your bloodstream and protect cells from oxidation.

1 RCT n=— 15 g 16 wk

33917032

—

1 RCT n=—

15 g

16 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Sharpen visual clarity Likely modest benefit	small	1 study n=114	25 g	13 wk	#2/4
Protect vision in retinal disease Likely modest benefit	small	1 study n=114	25 g	13 wk	#2/5
Raise protective carotenoid levels Not enough research		1 RCT n=—	15 g	16 wk	—

Buy well

Recommended Goji products

Real products that dose Goji where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate Goji dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

Risk profile

Adverse events and known drug interactions

Safety events

hematuria/bleeding (elevated INR) moderate

intestinal gas mild

hepatic steatosis

hepatic enzyme increased

hepatotoxicity

renal impairment

oxidative stress

splenomegaly

Drug interactions

Warfarin major increases effect

Doxorubicin moderate increases effect

Drug:Dexamethasone moderate decreases concentration

Neomycin moderate decreases effect

Furosemide moderate decreases effect

Isoniazid moderate decreases concentration

Rifampicin moderate decreases concentration

Sources

Generated August 14, 2026

Goji

What goji actually does, by outcome

Recommended Goji products

Adverse events and known drug interactions

More evidence for Goji

Carotenoid

Lutein

Zeaxanthin

Astaxanthin

Carotene (unspecified)

Palm Oil

Goji

Recommended Goji products

More evidence for Goji

NewCarotenoid

NewLutein

NewZeaxanthin

NewAstaxanthin

NewCarotene (unspecified)

NewPalm Oil

Carotenoid

Lutein

Zeaxanthin

Astaxanthin

Carotene (unspecified)

Palm Oil