Hollywood star shocks fans by eating ultra-poisonous berry from London garden while asking fans 'what is this?'

Clueless actor Alicia Silverstone has shocked fans with her toxic choice of snack — filming herself carelessly biting into a poisonous berry that can cause fever and agonising stomach pain.

The 47-year-old Hollywood star posted a clip to her TikTok channel that showed her eating a small orange berry that she'd picked from a London garden, while asking fans 'what the heck' it was. 

In response to the video which has gained 1.1million views on TikTok, fans warned the actor the plant is a 'toxic' Jerusalem Cherry and urged her to update them on how she was feeling.

Others joked she is 'clearly clueless' and questioned why she would eat 'random, unknown things from the street'. 

But doctors say the all parts of the plant are poisonous, especially the unripe fruits which if eaten can cause fever, sweating, vomiting, stomach pain, headache and increased heart rate.

Clueless actor Alicia Silverstone shocked fans when she ate a poisonous berry from a London garden that can cause fever and stomach pain

The 47-year-old Hollywood star, filmed herself picking and biting into a small orange berry, while asking fans 'what the heck' is was

Unknowingly eating a potentially dangerous plant, Silverstone told her 4.3million followers: 'I've discovered something and I can't figure out what it is and I need your help. 

'I just bit into it because I was on the street and we were discussing whether this was a tomato or not.

'It's definitely not a tomato because of its leaves.

'So what the heck is this?'

After holding up the orange berry to the camera she confessed that she didn't think it was edible.  

'I don't think you are supposed to eat this. But it is almost like a pepper,' she said. 

'Does anyone know what this is, I need someone to tell me, I'm in England.'

Unknowingly eating a potentially dangerous plant, Silverstone filmed herself picking the berry with her bare hands from a London garden and biting into it (left). Part of the Solanaceae family, the plant (pictured squished on the floor, right) is 'harmful if eaten' and should be handled wearing gloves, according to The Royal Horticultural Society

But fans were quick to comment that it was in fact dangerous to eat.

One social media user commented: 'OMG NO!! Jerusalem Cherry very poisonous in the Nightshade family. Hope you are ok.'

Another said: 'Girl! berries are either great or freaking poisonous! Don't eat rando bush-things.' 

One fan said: 'She’s clearly clueless…'

Others warned the berries can cause itching and are definitely not safe to eat.  

Solanum pseudocapsicum, also known as a Christmas Cherry or a Jerusalem Cherry, is a small bushy, evergreen shrub that produces dark, glossy leaves and red, or orange berries. 

Part of the Solanaceae family, the plant is 'harmful if eaten' and should be handled wearing gloves, according to The Royal Horticultural Society.

Dr Hana Patel, NHS GP warns the plant can be fatal if eaten and death has been reported. 

She said: 'If plant or fruit is eaten, early symptoms can include fever, sweating, vomiting, stomach pain, headache and increased heart rate. Symptoms are delayed for several hours and can persist for days.'

She added that it can also cause allergic skin reactions. 

Dr Duane Mellor, a dietitian and spokesperson for British Dietetic Association, said: 'Although the ripe Jerusalem cherry contains less of the poisonous component than the unripe fruits and leaves it is still toxic. 

'As such it should not be eaten as can commonly cause gastrointestinal effects including pain, nausea and diarrhoea as well as potentially delirium, fever and vision changes. '

He added: 'It is important that people only eat fruits that they are familiar with or they are sure are safe to eat.'